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Gelneren [198K]
2 years ago
7

Plz help me get the right answer to these

Mathematics
2 answers:
-Dominant- [34]2 years ago
8 0

Step-by-step explanation:

(-7b^5+42b^4)\dib7b=\dfrac{-7b^5}{7b}+\dfrac{42b^4}{7b}=-b^4+6b^3

Citrus2011 [14]2 years ago
4 0

- b^{4} + 6b^{3}

divide each term on the numerator by 7b

= - 7b^{5} / 7b + 42b^{4} / 7b

= - b^{4} + 6b^{3}


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LOTS OF POINTS!!! HELP WITH 7 ANd EXPLAIN!!
saveliy_v [14]

Answer:

w=4

Step-by-step explanation:

The surface area of a prism is SA= 2lw+2lh+2hw

We are trying to find out the width if the SA is 240 square inches, length is 12 inches, and the height is 5 inches. Let's plug these numbers into the equation.

240=(2*12*w)+(2*12*5)+(2*5*w)

          24w+120+10w

240= 34w+120

-120           -120

120= 34w

120/34 = 34w/34

w is approximately equal to 3.5 which can be rounded to 4

w=4

Hope this is right! It was confusing at first but I understood it!

3 0
3 years ago
What is the slope intercept from of the equation of the line that that passes through the points (-3, 2) and (1, 5)
viva [34]

The slope-intercept form of a line:

y=mx+b\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\to slope\\\\b\to y-intercept

We have:

(-3,\ 2)\to x_1=-3,\ y_1=2\\(1,\ 5)\to x_2=1,\ y_2=5

Substitute:

m=\dfrac{5-2}{1-(-3)}=\dfrac{3}{4}

y=\dfrac{3}{4}x+b

Put the values of coordinates of the point (1, 5) to the equation of a line:

5=\dfrac{3}{4}(1)+b\\\\5=\dfrac{3}{4}+b\qquad|-\dfrac{3}{4}\\\\b=4\dfrac{1}{4}

Answer: y=\dfrac{3}{4}x+4\dfrac{1}{4}


5 0
2 years ago
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Answer:

20,275.2

Step-by-step explanation:

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8 0
2 years ago
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natka813 [3]

Answer:

D. $70

Step-by-step explanation:

you can first think that the first tree is $25 plus the nine trees for 5 dollars so  

5x9=45

45+25=70

Hope this helps :D

3 0
2 years ago
7. carmen estimates that deductions from his gross pay will be 25%. assuming the weekly gross pay is $229.22, carmen can expect
daser333 [38]

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