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devlian [24]
3 years ago
8

SOMEONE PLEASE HELP ME!!!!!!!

Mathematics
1 answer:
OleMash [197]3 years ago
4 0

Answer:

Step-by-step explanation:

\frac{57}{40.3}=\frac{23}{QR}  \\

cross multiply

57(QR)=926.9

QR=16.26...

round to nearest tenth

QR=16.3

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A student finished 8 of her homework problems in class. If the ratio of problems she finished to problems she still had left was
kompoz [17]

Answer:

10 problems

Explanation:

The ratio can be used to find the number of problems left. Then, you can add all the problems together to find your final answer.

7 0
3 years ago
Read 2 more answers
Simplify the expression using long division. (10x2 – 85x – 10) ÷ (x – 8) Question 7 options: quotient 10x – 5 and remainder –50
Anna [14]

Answer:

The quotient is (10x - 5) and the reminder is -50 ⇒ 1st answer

Step-by-step explanation:

* Lets solve the long division by easiest way

∵ (10x² - 85x - 10)/(x - 8)

∵ (10x² - 85x - 10) is the dividend

∵ (x - 8) is the divisor

- Divide the first term of the dividend by the first term of the divisor

∴ 10x² ÷ x = 10x ⇒ first term of the quotient

- Multiply 10x by the the divisor

∴ 10x(x - 8) = 10x² - 80x

- Subtract the answer from the dividend

∴ (10x² - 85x - 10) - (10x² - 80x) =

# 10x² - 10x² = 0

# -85x - -80x = -85x + 80x = -5x

# -10

∴ (10x² - 85x - 10)/(x - 8) = 10x + (-5x - 10)/(x - 8)

* Repeat the same steps again with the new dividend -5x - 10

- Divide the first term of the dividend by the first term of the divisor

∴ -5x ÷ x = -5 ⇒ second term of the quotient

- Multiply -5 by the divisor

∴ -5(x - 8) = -5x + 40

- Subtract the answer from the dividend

∴ (-5x - 10) - (-5x + 40) =

# -5x - -5x = -5x + 5x = 0

# -10 - 40 = -50

∴ (-5x - 10)/(x - 8) = -5 + -50/(x - 8)

∴ (10x² - 85x - 10)/(x - 8) = 10x - 5 + -50/(x - 8)

- The quotient is the answer of the division

∴ The quotient is (10x - 5) and the reminder is -50

7 0
3 years ago
Read 2 more answers
Laura has a backyard that she wants to renovate. Her
miskamm [114]

Answer:

Area of the walkway = 8<em>x </em>+ 24

Step-by-step explanation:

Area of the total backyard = l\times b

Area of total backyard = (x+6)\times (x+4) = x^{2} +10x + 24

Now, Area of the rectangular garden = l\times b

Area of the rectangular garden = x (x+2) = x^{2} + 2x

Now area of the walkway poured with concrete = Area of the backyard - Area of the rectangular garden

= (x^{2} +10x +24) - (x^{2} +2x)

= x^{2} + 10x +24 - x^{2} -2x

= 8<em>x</em> + 24  

 

4 0
3 years ago
5x4 - 7x3 + x + 2 <br> terms
Tomtit [17]

Answer:

It is already the farthest that can be

Step-by-step explanation:

5x4 - 7x3 + x + 2

5x^2 - 7x^2 + 1x + 2

7 0
3 years ago
Write an equation in point-slope form for a line passes through the point (8,-7) and has a slope of 5/4.
fomenos

Answer:

y+7=5/4(x-8)

Step-by-step explanation:

y-y1=m(x-x1)

y-(-7)=5/4(x-8)

y+7=5/4(x-8)

8 0
3 years ago
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