Mathematics High School

Q1. 2x^2+3x+8 when x=4
Q2. 6x2−4x−7 when x=2

Answers

Answer 1

Answer:

Q1.ans=52

Q2.ans=9

Step-by-step explanation:

substitute the value of x in the equations and open the bracket before adding and subtracting

Related Questions

I don’t get it can you guy help me

Answers

3 to the power of 4, is 3 times 3 times 3 times 3

Answer:

81

Step-by-step explanation:

3 to the power of 4, is 3 times 3 times 3 times 3

Pls help me
What is the diagram?

Answers

Answer:

c/e = e/d

Step-by-step explanation:

These are similar triangles. When you flip the larger one clockwise to enable you to see which sides are corresponding, then you find that:

c corresponds to e'

a corresponds to b

e corresponds to d

Therefore, c/e in the original position = e'/d in the flipped position.

So c/e = e/d

0.8 = 0.5x

Solve for x

Please show steps thanks so much

Answers

If I’m not mistaken, to solve for x you have to get it by itself so you need to divide 0.5 from both sides:

0.8/ 0.5 = 0.5x/ 0.5

Cross out the 0.5’s on the right because they cancel out and you will end up with:

0.8/ 0.5 = x

All you have to do then is divide 0.8 by 0.5 and you get:

1.6 = x

I need help, I need to find the value of j, thank you

Answers

Step-by-step explanation:

[tex] \sin(x) = \frac{8}{10} \\ x = 53.13[/tex]

[tex] \sin(53.13) = \frac{4}{j} \\ j = \frac{4}{ \sin(53.13) } = \frac{4}{0.8} = 5[/tex]

Angel misses 20% of the free throws he attempts in a season. How many total free throws did he attempt if he missed 31

Answers

Answer: 155

Step-by-step explanation:

31 - it is 20%

20% = 0.2

Find, how many total free throws did he attempt if he missed:

31 : 0.2 = 155


pls help:) 33 points:))

Answers

The last one is the correct answer

will mark brainliest if correct please show steps ​

Answers

Answer:

Do you need the answer to this queston if so it is 2

Step-by-step explanation:

*EXTRA PTS* find the value

Answers

Answer:
13) 4
14) 7
15) 8
How?
21x+6 = 90 by the alternate exterior angles rule so solve and get 4

11x-2=75 by the Corresponding exteriors angles rule so solve and you get 7

8x-4=60 by the vertical angle rule solve and you get 8

Hope this helps :D

help with math problem​

Answers

Answer:

1.No- that just means that the numbers on that side are smaller

Step-by-step explanation:

Can someone help me please?

Answers

B and c if it’s an optional question

Answer: Hi

Step-by-step explanation:

The answer is b

Need help ASAP !!
( I accidentally clicked an answer )

Answers

Answer:

b

Step-by-step explanation:

not 100% sure but i think it is b

Need more information

what is 0.375 we a fraction in simplest form?
1/8
3/8
5/16
2/5

Answers

the answer is 3/8.......

You are making curtains for your little sister's dollhouse. There are 24 windows on the dollhouse and each
needs 3.75 inches of fabric for curtains. How much fabric will you need?
(please help I only have a couple of minutes)

Answers

is it 90? sorry if it’s wrong

Answer:

90 inches

Step-by-step explanation:

24 x 3.75 which is the same as 24 x 3 3/4 which is the same as

24 x 15/4 = 6 x 15 = 90

can someone please help?​

Answers

Answer:

g

Step-by-step explanation:

G 12 mi I think ? Isushdgbxuuwj

four tanks each had 54 litres and 750ml. what is their total capacity in litres ​

Answers

Answer: 219 I beleive

Step-by-step explanation: 54(4)+(.750)4=219

Answer:

each tank = 54 + (750÷ 1000) liter = 54.75L

so the capacity of the four tanks = 4x 54.75 = 219litre

Step-by-step explanation:

1) change 750 ml int litre which is equal 750÷1000 = 0.75L

2) add 54 +0.75

3) multiply 4 by 54.75 = 219L

what is the exact decimal equivalent of 7/16 SHOW YOUR WORK
1.473
0,4375
4.375
4.374

Answers

oh this is pretty simple if u look at it. it’s 0.4375, because the fraction isn’t complete meaning that it is less than 1

Which graph represents the inequality x > 23 ?

Answers

Answer:

jazz

Step-by-step explanation:

yes

Which equation and solution can be used to solve this problem? Twenty-two less than a number is twenty-four. O Q+ 22 = 24. Subtract 22 from both sides. The answer is 2. 0 24+9= 22 Subtract 22 from both sides. The answer is 2 O9-24 = 22. Add 24 to both sides. The answer is 46. 09-22 = 24. Add 22 to both sides. The answer is 46.​

Answers

Answer:

Step-by-step explanation:

q minus 22 = 24: Add 22 to both sides. The answer is 46.

can someone tell me how to do this plz

Answers

A34*35

3456

=2340

Step-by-step explanation:

e=mc^2

Find the Inverse Function f(x)=x-5

Answers

Inverse function is f-1(x)= x + 5

show work if can

Simplify the expression:
(3g - 8) - (2g - 1)

Answers

Answer:

g+-7

Step-by-step explanation:

Let's simplify step-by-step.

3g−8−(2g−1)

Distribute the Negative Sign:

=3g−8+−1(2g−1)

=3g+−8+−1(2g)+(−1)(−1)

=3g+−8+−2g+1

Combine Like Terms:

=3g+−8+−2g+1

=(3g+−2g)+(−8+1)

=g+−7

Answer:

[tex]g - 7[/tex]

Step-by-step explanation:

1. Remove parentheses.

[tex]3g - 8 - 2g + 1[/tex]

2. collect like terms.

[tex](3g - 2g) + ( - 8 + 1)[/tex]

3. Simplify.

[tex]g - 7[/tex]

therefor, the answer is g - 7

5x+y=2
Solve for y my teacher said to write the answer in this form y=-5x+2 because it goes with y=mx+b can it be written like that?

Answers

Y=2-5x hope this is correct

Answer:yes it can be written like that.

Step-by-step explanation:

PLEASE HELP ME I BEG OF YOU IF YOU HELP ME I WILL GIVE YOU BRAINTLIEST JUST PLEASE HELP ME "Julie goes to the sports store and spends $40.50 before tax. She buys a pair of shorts for $21.75 and 3 pairs of socks that each cost same amount. How Much does each pair of socks cost?" Please help me

Answers

40.50-21.75=23.75
23.75/3=7.916 which you would round up to 7.92 so the answer is “about $7.92”

jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. When the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax. After tax, the total is 45.99. What percentage of the subtotal is the total?

Answers

Answer:

To find out the percentage, you do (3.99/42) * 100.

Step-by-step explanation:

Luke and Nora can peel 20 carrots in 6 min, working together. Luke can peel 5 carrots in 2 min,
working alone. How many minutes would it take Nora to peel 10 carrots, working alone?

THE ANSWER IS 12

Answers

The answer is 12 carrots

Mariah ordered 50 beads. 8 of the beads were blue. What percent of the beads were blue?

Answers

Answer:

16%

Step-by-step explanation:

Hope this helps :D

Graph the line with a slope of 2/3 that contains the point (−3,−5)

Answers

Answer:

Step-by-step explanation:

So for the given information, it would be easiest to use slope-intercept form, which is y=mx + b, where m is the slope and b is the y-intercept.

We can plug in 2/3 for the slope, because we are given that.

y=2/3x + b.

To find the y-intercept, plug in the given point for x and y and solve for b.

-5 = 2/3 · (-3) + b

-5 = -2 + b

b = -3

So now we have the complete equation of the line.

y = 2/3x -3

Now to graphing.

We can put the y-intercept, (0, -3), and the given point, (-3, -5) on a graph.

Question: The table shows pairs of random digits. The pairs in each group simulate the 5 shots taken by the opponent.
The paired digits 00 to 99 represent 100 shots.
Let 00 to 72 = a shot that is saved. Which digits represent a goal scored? Explain.

Answers

Answer:

90%

Step-by-step explanation:

2. How many solutions to the equation 2x +2 = 2(x+3)
O 1 solution
O Infinitely many solutions
O No solution

Answers

Answer:

O No solution

Step-by-step explanation:

2x +2 = 2(x+3)

Distributer the 2 on the right side.

2x + 2 = 2x + 6

Subtract 2x from both sides.

2 = 6

2 = 6 is a false statement.

Since we did two legal steps to solve the equation, and we ended up with a false statement, that means this equation has no solution.

Answer: O No solution

Gary started his Saturday with $5 in his pocket. He then set up a lemonade stand and sold cups of lemonade for $1 per cup.

Is this a proportional or additive relationship?

Question 1 options:

Proportional


Additive

Answers

Answer:

it's 5 how did I know bc I'm big brain;p that's the right answers it's ,5...

Answer:

Additive

Step-by-step explanation:

I took the test

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