Explain how using
basic facts can help you find 10 x 20 x 30 x 40 mentally.

Answers

Answer 1

Answer:

you just do 1x2x3x4

and then that equals 24

so now you have 24 and then you add 4 zeros because their are 4 zeros in the equation so then the final answer is

240000

Step-by-step explanation:


Related Questions

What are the values of x and y?
image attached. Thank you!

Answers

Answer:

C

Step-by-step explanation:

We'll have to use trigonometry for this.

First, note that in right triangle ABC, if we look from the perspective of angle A, the opposite side is x, the adjacent side is y, and the hypotenuse is 18.

In order to find x, then, we must use sine, which is opposite/hypotenuse. So:

sin(A) = sin(60) = opposite/hypotenuse = x/18

sin(60) is equal to (√3)/2, so multiplying both sides by 18 gives:

[(√3)/2] * 18 = 9√3

Already, we can tell that the answer is likely C, but let's find y to make sure.

We will use cosine to find y because cos = adjacent/hypotenuse.

cos(A) = cos(60) = adjacent/hypotenuse = y/18

cos(60) = 0.5, so multiplying both sides by 18 gives:

0.5 * 18 = 9

So, y = 9.

Thus, C is our answer.

~ an aesthetics lover

Answer:

C

Step-by-step explanation:

Using the cosine/ sine ratio in the right triangle and the exact values

cos30° = [tex]\frac{\sqrt{3} }{2}[/tex] and sin30° = [tex]\frac{1}{2}[/tex] , then

cos30° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{x}{18}[/tex] = [tex]\frac{\sqrt{3} }{2}[/tex] ( cross- multiply )

2x = 18[tex]\sqrt{3}[/tex] ( divide both sides by 2 )

x = 9[tex]\sqrt{3}[/tex]

----------------------------------------------------------

sin30° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{AB}{AC}[/tex] = [tex]\frac{y}{18}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )

2y = 18 ( divide both sides by 2 )

y = 9

Thus

x = 9[tex]\sqrt{3}[/tex] and y = 9 → C

Write an expression that is equivalent to three over five (3y + 15). (4 points)

A three over five y + 9

B three over five y + 15

C nine over five y + 9

D nine over five y + 15
HELP ASAP

Answers

Answer:

The equivalent to three over five (3y + 15) is nine over five y + 9 ⇒ C

Step-by-step explanation:

Let us solve the question

∵ Three over five means [tex]\frac{3}{5}[/tex]

∴ Three over five (3y + 15) = [tex]\frac{3}{5}[/tex] (3y + 15)

→ By using the distributive property, multiply each term inside the

   bracket by three over 5

∴  [tex]\frac{3}{5}[/tex] (3y + 15) =  [tex]\frac{3}{5}[/tex] (3y) + [tex]\frac{3}{5}[/tex] (15)

→ Multiply three over five by 3y

∵  [tex]\frac{3}{5}[/tex] (3y) =  [tex]\frac{3(3)}{5}[/tex] (y) =  [tex]\frac{9}{5}[/tex] y

→ Multiply three over five by 15

∵  [tex]\frac{3}{5}[/tex] (15) =  [tex]\frac{3(15)}{5}[/tex] =  [tex]\frac{45}{5}[/tex] = 9

∴  [tex]\frac{3}{5}[/tex] (3y) + [tex]\frac{3}{5}[/tex] (15) = [tex]\frac{9}{5}[/tex] y + 9

∴ [tex]\frac{3}{5}[/tex] (3y + 15) =   [tex]\frac{9}{5}[/tex] y + 9

The equivalent to three over five (3y + 15) is  [tex]\frac{9}{5}[/tex] y + 9

c please give 4 stars :)

A number line is drawn left to right with integers spaced 1 centimeter apart. An ant crawls onto the number line at +2. It then crawls 3.5 centimeters left, 4.8 centimeters right, and 7.9 centimeters left.

Question 1
Part A

Where is the ant on the number line now?

Enter the correct answer in the box.

Answers

Answer:

Position = -5

Step-by-step explanation:

The number line is not shown, however the question can still be answered.

Given

Start Point: +2

Left Movement: 3.5cm and 7.9cm

Right Movement: 4.8cm

Required

Determine the Ant's position

To do this, we treat all left movements as negative and all right movements as positive.

So, we have:

Position = 2 - 3.5 - 7.9 + 4.8

Position = -4.6

Since the number line is spaced by 1cm, we have to approximate to the nearest integer.

Position = -5

find the least common denominator of 5/2 and 9/10

Answers

Answer:

2

Step-by-step explanation:

Denominator is the bottom number, and this is a multiple of both of the denominators

In the diagram, which angles from a linear pair ? Select 3 options

Answers

RST and RSV
RST and VSU
TSU and USV

help meeeeeeeeeeeeeeee​

Answers

Answer:

A

Step-by-step explanation:

Answer: A










Explanation:

Evaluate the following expression. Express your answer in simplest form. 3/16 + 5/8 × 1/2​

Answers

Answer:

1/2

Step-by-step explanation:

We have to follow the order of operations. Since there are no parenthesis or exponents, we do multiplication first. to multiple fractions, we multiply the two numerators (top parts), which in this situation would get us 5*1=5. Then, we multiply the two denominators (bottom parts), which would get us 8*2=16. then we put the first result over the second, and we get 5/16. since the two denominators are the same, we don't need to change anything. we can just add the numerator, and get 8/16, which simplifies to 1/2.

Solve for y.
C=8(y + k)

Answers

Answer:

C/8    -k= y

Step-by-step explanation:

C=8(y + k)

Divide each side by 8

C/8 = y+k

Subtract k from each side

C/8  -k = y+k-k

C/8    -k= y

Answer: y  =  C /8 −  k

Step-by-step explanation:

the mass of the moon

Answers

Answer:

The answer is 10^24kg. 0.07346.

Shana, who lives in Canada, and Pearl, who lives in Pennsylvania, were discussing the weather. Shana complained about the cold temperature of Negative 20 degrees Celsius. Pearl, who lives in Pennsylvania, mentioned that her temperature was the opposite of Shana's. Which is the correct way to represent "the opposite of Shana's temperature is equal to Pearl's"? Negative 20 = 20 Negative (negative 20) = negative 20 Negative (20) = negative 20 Negative (negative 20) = 20

Answers

Answer:

Negative (negative 20) = 20

Step-by-step explanation:

Given Shana temperature = -20°C

°If Pearls temperature is opposite that of Shana's then Pearls temparature = -(-20) = 20°C

Hence the correct way to represent "the opposite of Shana's temperature is equal to Pearl's

Opposite of shana = -(-20°C)

Pearls temperature = +20°C

Since Opposite of shana = Pearls temperature, hence  -(-20°C) = 20°C

Answer:

-(-20 = 20

Step-by-step explanation:

The "opposite" here means we take the negative of -20 C.

So we can write -(-20 which is equal to 20.

So the first option is correct, -(-20 = 20.

hope this helps:)

Question 3 of 10
What is the slope of the line given by the equation below?
y + 2 = -3(x-5)
A. -5
B. 3
C. -3
D. 2

Answers

The answer is -3 !

Explanation:

Please give brainliest

any luck of help? pls say yess I'll brainlist u!!! give u 5 star just help me answer ​

Answers

Answer:

11. A) x = 0

y = 2x + 5

=> y = 2 * 0 + 5

=> y = 0 + 5 = 5

=> y = 5 (First blank)

x = 1

y = 2x + 5

=> y = 2 * 1 + 5

=> y = 2 + 5 = 7

=> y = 7 (Second blank)

x = 2

y = 2x + 5

=> y = 2 * 2 + 5

=> y = 4 + 5

=> y = 9 (Third blank)

x = 3

y = 2x + 5

=> y = 2 * 3 + 5

=> y = 6 + 5

=> y = 11 (Fourth blank)

x = 4

=> y = 2x + 5

=> y = 2 * 4 + 5

=> y = 8 + 5

=> y = 13 (Fifth blank)

11. B)  x = 0

=> y = [tex]3x^{2} + 1[/tex]

=> y = 3 * 0 * 0 + 1

=> y = 0 + 1

=> y = 1 (First blank)

x = 1

=> y = [tex]3x^{2} + 1[/tex]

=> y = 3 * 1 * 1 + 1

=> y = 3 + 1

=> y = 4 (Second blank)

x = 2

=> y = [tex]3x^{2} + 1[/tex]

=> y = 3 * 2 * 2 + 1

=> y = 12 + 1

=> y = 13 (Third blank)

x = 3

=> y = [tex]3x^{2} + 1[/tex]

=> y = 3 * 3 * 3 + 1

=> y = 27 + 1

=> y = 28 (Fourth blank)

x = 4

=> y = [tex]3x^{2} + 1[/tex]

=> y = 3 * 4 * 4 + 1

=> y = 48 + 1

=> y = 49 (Fifth blank)

For more info, here's a picture,

If my answer helped, kindly mark me as the Brainliest!!

Thank You!!

What do the two lines in the graph below have in common?

Answers

Answer: Parallel and same slope

Step-by-step explanation: Parallel means that the lines will never cross, which is shown in the picture. Basically they won't intersect.

branliest plssss :)

I need help with this

Answers

Answer:

ok I did this construction about a year ago but I think I can remember something so if it's not correct I hope you won't be mad with me ok so the first step draw a straight line measure the length then make an AC on both sides then stand on one side make an arc upstand on the other side make an arc upthen stand on one AC and make another ARK on top of the other one then stand on the other AC and make another ark on top of the other one then join the lines yeah I think that's the procedure

The population of deer in a state park can be predicted by the expression 106(1.087)t, where t is the number of years since 2010.

Answers

Answer:

b) When will the number of deer be 600?

Step-by-step explanation:

Answer:

600

Step-by-step explanation:

7: Which of the following numbers is smallest?
(b)
7.0
(c)
)
(d)
.7
12
(e)
S

Answers

Answer:

d) 0.712

Step-by-step explanation:

Your question isn't clear, so my answer may be wromg

It’s d it’s the smallest

Convert 10 feet into yards. Round your answer to the nearest hundredth.

Answers

the answer will be 3 yards

Which function is a horizontal translation of the parent quadratic function, f(x) = x2
O A. ;(z) = x2 - 4
B. g(x) = (x - 4)
C. k(x) = -42
D. h(x) = 4,2

Answers

The function that represents the horizontal translation of the parent function is (b)g(x) = (x - 4)^2

How to determine the horizontal translation?

The function is given as:

f(x) = x^2

An horizontal translation is represented using:

f'(x) = (x ± h)^2

Where h does not equal to 0

From the list of options. we have:

g(x) = (x - 4)^2

Hence, a function that represents the horizontal translation of the parent function is (b)g(x) = (x - 4)^2

Read more about translation at:

https://brainly.com/question/4289712

#SPJ9

I need help on this question

Answers

Answer:

alright so after it said 4 count by 4 so 4 8 12 16 18 and until u get to 18 go by 2 i think

What is the slope of a line that is perpendicular to the line shown on the graph?

Answers

The slope of the line that is perpendicular to the line shown should have an opposite slope. For example if the slope is 2/5. The perpendicular slope is -5/2. Hope this helps!!

Help plz and thanks

Answers

Answer:

8

Step-by-step explanation:

4x4=16x8=128

which function has zeros of -8,1 and 3?

Answers

Answer:

A. y = (x - 3)(x + 8)(x - 1)

Step-by-step explanation:

To find zeros of a polynomial, we set the polynomial equal to zero.

We can eliminate C and D; as we set them equal to 0, we see that a root would be 0 due to x. Since we are not looking for a root of 0, those 2 answer choices are incorrect.

Between A and B, A is correct:

A

0 = (x - 3)(x + 8)(x - 1)

x = -8, 1, 3

B

0 = (x + 1)(x - 8)(x + 3)

x = -3, -1, 8

Answer:

Answer A is the correct one.

Step-by-step explanation:

Which function has zeros of -8,1 and 3?  We convert each of these zeros into factors, as follows:  (x + 8), (x - 1), (x - 3).  Answer A is the correct one.

Represent each expression as a multiple of a sum of whole numbers with no common factor. 9 × (2 + 4 + 3) 4 × (4 + 7 + 12) 12 × (3 + 8 + 1) 14 × (9 + 2 + 1) 27 × (2 + 3 + 1) 22 × (4 + 3 + 1) (36 + 96 + 12) arrowRight (126 + 28 + 14) arrowRight (16 + 28 + 48) arrowRight (18 + 36 + 27) arrowRight (54 + 81 + 27) arrowRight (88 + 66 + 22) arrowRight

Answers

Answer:

(18 + 36 + 27) = 9 x (2+4+3)

(88 + 66 + 22) = 22 x (4+3+1)

(36 + 96 + 12) = 12 x (3+8+1)

(126 + 28 + 14) = 14 x (9+2+1)

(54 + 81 + 27) = 27 x (2+3+1)

(16 + 28 + 48) = 4 x (4+7+12)

Step-by-step explanation:

The equations in the solution represent each expression as a multiple of a sum of whole numbers with no common factor.

What is the algebraic expression?

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.

As per the given question, the required solution would be as:

(18 + 36 + 27) = 9 × (2+4+3)

This equation represents each expression as a multiple of a sum of whole numbers with no common factor.

Similarly further equations like as :

(88 + 66 + 22) = 22 × (4+3+1)

(36 + 96 + 12) = 12 × (3+8+1)

(126 + 28 + 14) = 14 × (9+2+1)

(54 + 81 + 27) = 27 × (2+3+1)

(16 + 28 + 48) = 4 × (4+7+12)

Thus, the above equations represent each expression as a multiple of a sum of whole numbers with no common factor.

Learn more about the algebraic expression here :

brainly.com/question/21751419

#SPJ5

Which statement is best represented by the inequality d greater-than 11?
Mo worked more than 11 hours this week.
Mo worked 11 more hours than Quinn worked this week.
Mo worked less than 11 hours this week.
Mo worked 11 less hours than Quinn worked this week.

Answers

answer:

mo worked more than 11 hours this week.

Answer:

A

Step-by-step explanation:

5-2(x+2)=12
Decimal Form and work under the problem too HURRY!!!1

Answers

5-2(x+2)=12. 3(x+2)=12. 3x+6=12.
-6. -6

3x=6. Divide 6 by 3x. x=2

+54- -75 what the answer

Answers

Answer:

-21

Step-by-step explanation:

positive 54 decreased negative 75. The answer is -21. why? Because the negative variables is higher than the positive variable in the given.

Answer:

129

Step-by-step explanation:

+54- -75

54+75=129

When you are subtracting 54- -75, the symbols will automatically change to postives.

You could also use the method:

Keep, change, change

54          +            +75

HELPPPPpPPPZZZ PLZZZZ I NEED HELLPP

Answers

Answer:

The triangles are lined up with their correct pairs already.

Step-by-step explanation:

The leg that is the base is always seen as the bottom, and the leg to the side of it that makes the right angle will always be the height. Though if the base is at the hypotenuse as it is seen in the last photo, the height will be from the point of which the two legs of the triangle meet down to the hypotenuse.

find the coordinates of the midpoint of a segment with the given endpoints 3.)P(-12 -9) Q(2,10) help plz ​

Answers

Answer:

(-5, 0.5)

Step-by-step explanation:

-12+2/2= -5

-9+10/2= 0.5

(-5, 0.5)

Diana is buying plates and cups for a party. She wants the same number of each. Plates are sold in packs of eight and cups are sold in packs of 12. What is the least number of plates and cups she can buy? How many packs of plates? How many packs of cups? Explain how you know.

Answers

Answer:

The least number of plates and cups she can buy is 24

She will buy 3 packs of plates

She will buy 2 packs of cup

Step-by-step explanation:

Plates = 8 per pack

Cups = 12 per pack

Find the Lowest common multiple of 8 and 12

8 = 16, 24, 32, 40, 48, 56, 64, 72, 80

12 = 24, 36, 48, 60, 72

What is the least number of plates and cups she can buy?

The Lowest common multiple of 8 and 12 is 24

The least number of plates and cups she can buy is 24

How many packs of plates?

Packs of plates = 24 plates / 8 per pack

= 3 packs

She will buy 3 packs of plates

How many packs of cups?

Packs of cups = 24 / 12 per pack

= 2 packs

She will buy 2 packs of cup

helppppppppp pls
yhghfhcgfvg

Answers

Answer:

Length of the side is 10 for a

Each side for b is 3

Step-by-step explanation:

Answer:

50 and the second one is 3

Step-by-step explanation:

to get the length from each side the area divide the area by 2 and to get the length for each side from the total perimeter then divide by 4

Other Questions
Select the correct answer.Find the inverse of function f.f(x) = 1/2x + 7 what is the correct article to "j'aimerais ____ ufs" what is three blus six equal to Select the correctly punctuated sentence.John and Marie's car is parked behind Jane and Lisa's motorcycles.John's and Marie's car is parked behind Jane's and Lisa's motorcycles.John and Marie's car is parked behind Jane's and Lisa's motorcycles.John's and Marie's car is parked behind Jane and Lisa's motorcycles. Select three ratios that are equivalent to 16:1216:1216, colon, 12.Choose 3 answers:Choose 3 answers:(Choice A)A8:68:68, colon, 6(Choice B)B32:2432:2432, colon, 24(Choice C)C4:34:34, colon, 3(Choice D)D12:812:812, colon, 8(Choice E)E24:1624:16 A hot air balloon went from an elevation of 5,340 ft to an elevation of 3,436 ft in 32 minutes what was its rate of descent?The rate of descent was ____ feet per minute.Please help ASAP my assignment is due in less then an hour. It is important to ensure that your goals are so that you know exactly what you are trying to achieve. A. exclusive B. specific C. compatible On her first science test, Whitney scored a 92%. On the second test, she scored an 80%. What is the approximate percent of decrease in her score? True or False: Spain controlled the territories of Florida, Cuba, Hispaniola, Central America, and South America. O True O False. 50 POINTS Write an essay on how characterization is used to express and develop the main themes in Animal Farm, choosing two from the following pairs: Napoleon/corruption of power The Pigs/social-class hierarchy The Animals/working-class loyalty Squealer/manipulation of language Use specific details from the story and information about historical events to describe how characters and their actions express and develop each of the two themes. Paragraph 1 Define Characterization. (research and make sure you cite your sources) (1-2 sentences) Why do you think characterization is used in the story? (2-3 sentences) Give a brief summary of Animal Farm and its theme. (2-4 sentences) Paragraph 2 Choose your first character. What does this character represent? (2-3 sentences) Describe this character and his/her contribution to the farm. (2-4 sentences) What makes this character important? (1-2 sentences) Whats the theme for this character and why is it important? (2-3 sentences) Paragraph 3 Choose your second character. What does this character represent? (2-3 sentences) Describe this character and his/her contribution to the farm. (2-3 sentences) What makes this character important? (1-2 sentences) Whats the theme for this character and why is it important? (2-3 sentences) Consider the rule y = 5x + 7.a. How many tiles are in Figure 0?b. Which figure has 37 tiles?c. In the equation y = mx + b, what do the letters m and b represent? -1/3(x-15)=-4 what is the correct sequence of operations Plz help me Find the rational approximation of square root 7 to the nearest tenth. Write the overall equation for photosynthesis using words? Theforce acting on an object is the combination ofall of the individual forces acting on it.Check it2 SCRATCHPAD~ Improve this questio Change the sentence from passive to active voice.Street signs in unfamiliar places need to be properly read by drivers. Can someone please help me I dont know how to start this QUESTION 411. Health care records belong to the patient since they are paying for care.OOTrueFalse please help !!! the question is in the picture i need help solving for x