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4 years ago

If h represents a number then write an expression for the quotient of twice h and 10 more than h

Mathematics

1 answer:

ratelena [41]4 years ago

7 0

2h + 10

Hope this helps!! :)

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PLEASEEEE HELPPP MEEE 6 and 7 PLEASE

Nitella [24]

Answer:

Question 6

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7

The width is 2x.

Step-by-step explanation:

Question 6)

Expand

$(5a+2)(a+4)$

solving to the expand

$(5a+2)(a+4)$

$\mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

$a=5a,\:b=2,\:c=a,\:d=4$

so the expression becomes

$=5aa+5a\cdot \:4+2a+2\cdot \:4$

$=5aa+5\cdot \:4a+2a+2\cdot \:4$

$=5a^2+20a+2a+8$

adding similar elements: 20a+2a=22a

$=5a^2+22a+8$

Hence,

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7)

Given

$A\:=\:8x^2$

$l=4x$

Using the formula

width = Area/Length

$=\:\frac{8x^2}{4x}$

$=2x$ ∵ $\mathrm{Divide\:the\:numbers:}\:\frac{8}{4}=2$

Therefore, the width is 2x.

5 0

3 years ago

Jivesh also has a more powerful Model B rocket. For this rocket, he uses the equation h=-490t^2+1260t. When is the height of the

kkurt [141]

Answer:

1.29 s

Step-by-step explanation:

h = -490t² + 1260t

810 = -490t² + 1260t

490t² - 1260t + 810 = 0

49t² - 126t + 81 = 0

(7t - 9)² = 0

7t - 9 = 0

t = 9/7

t ≈ 1.29

4 0

3 years ago

Please help me ASAP!

Slav-nsk [51]

Answer:

Exponential growth

Step-by-step explanation:

This is not a negative so it is growing.

Hope this helps!

3 0

3 years ago

Is this right? I just need to make sure. :)

Sav [38]

Answer:

Yes, you are 100% correct! Good job!!!

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Which fraction is not equivalent to 9/12 a.24/32 b.6/8 c.15/20 d.16/24

stiv31 [10]

The answer is D.

9/12 = 3/4
16/24 = 2/3

2/3 is not equivalent to 3/4

5 0

3 years ago