Can someone help me with #3 on c d and e

Answer:

80

Step-by-step explanation:

20 × 4 = 80

Answer:it is five

Step-by-step explanation:just divide 20 by 4

The short answer is that algebra doesn't work that way. You wouldn't divide *everything* by 2, but every term that contains a factor of 2.

In the expression

2 (6x - 1) + 2 (2x + 5)

both terms have a factor of 2 (the 2 out in front of them). They're the ones that get canceled when dividing by 2:

(2 (6x - 1) + 2 (2x + 5)) / 2 = 2/2 (6x - 1) + 2/2 (2x - 5)

… = 1 (6x - 1) + 1 (2x - 5)

… = (6x - 1) + (2x - 5)

and so on.

Looking ahead, it turns out that the equation is solved by x = 7. This makes 6x - 1 = 41 and 2x + 5 = 19. So the equation is saying that, if you make these replacements,

2×41 + 2×19 = 120

If you divide *everything* on the left by 2, you end up with fractions:

(2/2)×(41/2) + (2/2)×(19/2) = 41/2 + 19/2

but 41 + 19 = 60, so the end result would be 30, but that's not the same as 120/2 = 60.

Answer:

21°

Step-by-step explanation:

Since these are both equivalent right triangles, ∡RQY and ∡PQY are the same. So set them equal to each other.

16x-27=5x+6

x=3

Next plug x into ∡RQY

16(3)-27=21°

Answer:

Step-by-step explanation:

3

Answer:

slope = 0  

Step-by-step explanation:

1) Use the slope formula, [tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex], to solve for the slope. Use the x and y values of the given points, substitute them into the formula, and solve like so:

[tex]m = \frac{(4)-(4)}{(8)-(-9)} \\m = \frac{4-4}{8+9} \\m = \frac{0}{17} \\m = 0[/tex]

Thus, the slope is 0.

Step-by-step explanation:

1 is a right triangle I know this because a right triangle is a triangle which one of the angles is a 90 degree angle

Answer:

Triangles 1,2,3, and 4 are all right triangles

Answer:

Step-by-step explanation:

1) 2-4 = x/8

2) x times 8 = 2+4

I'm not sure about the second one but I hope this works :)

Given : the difference between 8 forty-sevens and 7 forty-seven.

To find : Solve it.

Solution : We have given a statement

Difference between 8 forty-sevens and 7 forty-seven.

8 forty-sevens mean 847

7 forty-seven mean 747

Difference between them is

847 - 747 = 100.

Therefore,100.

Answer

C because 2 quarts make's one gallon

Step-by-step explanation:

Answer:

m∠Y=50°

Step-by-step explanation:

So, we know that ∠S+∠Y=90 and that m∠S=2(m∠Y)-60.

If you plug those things into the equation, you get (2[m∠Y]-60)+m∠Y=90.

Then you multiply 2 and m∠Y: 2m∠Y-60+m∠Y=90.

Combine like terms: 3m∠Y-60=90.

Then you add 60 to both sides: 3m∠Y=150

Divide 3 on both sides: 3∠Y=50

Answer: The answer is 37.

Step-by-step explanation: i took test

The length of the hypotenuse, x is 37.

The correct option is B.

In a right-angled triangle, the square of the hypotenuse side is equal to the sum of the squares of the other two sides, according to Pythagoras's Theorem.

Given:

A Pythagorean triple (12, 35, x).

Applying the Pythagoras theorem,

The length of the hypotenuse, x,

x = √(35)² + (12)²

x = √1369

x = 37

Therefore, the value of x is 37.

To learn more about the Pythagoras theorem;

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Answer:

y = -3/7x + 1

Step-by-step explanation:

from the first point to the second point it goes down 3 and right 7 so this is your slope

the y intercept is 1

Answer:y=3x-4

Step-by-step explanation:

you add 5 on both sides

simplify

and get y on one side

slope is 3

the y intercept is -4

Answer: 273 degrees kelvin =  -0.15 degrees celsius

hope this helps brainliest plz

Answer:

Justin is 5 yrs old

Step-by-step explanation:

make an equation out of it. Let x be Justin's age

1/4(12)+2=x

simplify

3+2=x

x=5

Justin's age is 5 years.

The linear equations in one variable is an equation which is expressed in the form of ax + b = 0, where a and b are two integers, and x is a variable and has only one solution.

According to the given question

Justin is 2 years older than 1/4 of his brother's age.

Let the age of Justin be x years.

Also, Justin's brother age is 12 years.

Therefore,

The age pf Justin is given by

[tex]x = 2 + \frac{1}{4}(12)[/tex]

solve the above linear equation

⇒ x = 2 + 3

⇒ x = 5 years

Hence, Justin's age is 5 years.

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Answer:

           6, 7, 8 are correct

Step-by-step explanation:

[tex]XV=\dfrac{RS+TU}2\\\\\\44=\dfrac{30+TU}2\\\\44\cdot2=30+TU\\\\88-30=TU\\\\TU=58[/tex]

Answer:

Child = $ 10.00

Adult = $ 14.00

Step-by-step explanation:

Step-by-step explanation: 2 x 4 ² - 2x + 10

                                                2 x 4 = 8

                                                8 x 8 = 64

                                               64 - 2x + 10

                                               64 - 2 x 4 + 10

                                                64 - 8 + 10

                                                56 + 10 = 66

Answer:

27,4,5

Step-by-step explanation:

27³=3

4×5=20

27+4+5=36

Answer:

The answer for #1 is 1 unit

The answer for #2 is (3, 2)

Little Tip:

I can tell you're using Goggle Forms. If you hit ctrl + U, you can find the answers to the questions in the code

Answer: B

Step-by-step explanation:

Answer:

The mystery number is 823

Hope this helps.

Answer:

total cost=3(x)+25

Step-by-step explanation:

I would say the answer is w = 3 in; l = 4 in

Answer:

2.25

Step-by-step explanation:

yes

The unit rate of the silver chain is $0.44 per inch.

Unit rate is the ratio of two different units, with denominator as 1. For example, kilometer/hour, meter/sec, miles/hour, salary/month, etc. Arithmetic is probably the most basic and ancient branch of mathematics and is quite commonly used in our day-to-day life.

Given here: 16 inches of silver chain costs $36 and 18 inches cost $40.50

Thus we have the unit rate( dollar/inch) =36/16=40.50/18=4/9

Therefore the unit rate is given by 4/9 or 0.444 dollar per inch.

Hence, The unit rate of the silver chain is $0.44 per inch.

Learn more about the unit rate here:

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