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nadezda [96]
4 years ago
15

Will make the brainly-est due today and all the questions thank you:)​

Mathematics
1 answer:
Lyrx [107]4 years ago
8 0

Answer:

Comic  Books

a: y=-10x+90

b: He will have 10 books at the end of the seventh day.

Step-by-step explanation:

A: Take two points. The y-intercept is (0,90). The graph decreases by 10 each day.

B: Look at day 8.

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A solid metallic sphere of radius 7 cm is cut into two halves. Find the total surface area of the two hemisphere
svetoff [14.1K]
Here,
A sphere has 7cm radius
And it’s cut into tow half (2 hemispheres)
So, the radius of a hemisphere is also 7cm
Now,
TSA of hemisphere = 3 pie r^2
=3*22/7*7^2
=3*22/7*49
=3234/7
=462cm^2
Lastly,
The TSA of 2 hemispheres = 2* 462
=924cm^2

Hence,
The total surface area of the 2 hemisphere is 924cm^2
7 0
3 years ago
Look for a percentage and if it's growth or decay<br><img src="https://tex.z-dn.net/?f=y%20%3D%20600%280.71%29%20%5Cfrac%7Bx%7D%
swat32
29% and it shows decay because the number in the parenthesis is less than 1.

29% because 1- 0.71 = 0.29 then 0.29 is 29%
4 0
3 years ago
Help pls ! <br> (Don’t type just to type)
Alex17521 [72]
Given equation

Combine like terms

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Addition or subtraction property of like terms

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7 0
3 years ago
Please help me with this I’ll mark brainliest for whoever
drek231 [11]

Answer:

12(7)=84

Step-by-step explanation:

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3 0
3 years ago
7) P=17.59x-2655 is the profit formula for x boxes of frozen pizza dough. (By the way, what is profit?)
Sedaia [141]

Answer:

Part A)

For 10 boxes P=-\$2,479.10

For 40 boxes  P=-\$1,951.40

For 25 boxes  P=-\$2,215.25

Part B) The number of boxes must be greater than or equal to 191 for a profit of at least $700

Part C) 151 boxes are needed to break even

Step-by-step explanation:

we know that

Profit, is equals to revenue minus costs of goods sold

we have

P=17.59x-2,655

Part A) Find the profit for

1) 10 boxes

For x=10 boxes

substitute in the formula

P=17.59(10)-2,655

P=-\$2,479.10

The negative means that the revenue is less than the costs

2) 40 boxes

For x=40 boxes

substitute in the formula

P=17.59(40)-2,655

P=-\$1,951.40

The negative means that the revenue is less than the costs

3) 40 boxes

For x=25 boxes

substitute in the formula

P=17.59(25)-2,655

P=-\$2,215.25

The negative means that the revenue is less than the costs

Part B) How many boxes needed for  a profit of at least $700?

For P=$700

substitute in the formula and solve for x

700=17.59x-2,655

17.59x=2,655+700

17.59x=3,355

x=190.7\ boxes

Round up

x=191\ boxes

therefore

The number of boxes must be greater than or equal to 191 for a profit of at least $700

Part C) How many boxes needed to “break even”?

we know that

Break even is when the profit is equal to zero

For P=0

0=17.59x-2,655

17.59x=2,655

x=150.9

Round up

151 boxes are needed to break even

5 0
4 years ago
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