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monitta
3 years ago
8

A line and a plane intersect at a

Mathematics
1 answer:
AURORKA [14]3 years ago
6 0
I think it’s the vertex I might be wrong tho
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A pair of Basketball shoes was originally priced at $80, but was marked up 37.5%.What was the retail price of the shoes
andrezito [222]
Hello! When it comes to mark up, you would add 1 to the percentage in decimal form, because the price is going up. After you do that, you multiply that number by the original price. In this case, 37.5% is 0.375 in decimal form. 1 + 0.375 is 1.375. 80 * 1.375 is 110. There. The retail price of the shoes is $110.
5 0
3 years ago
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Total area=<br> Help me please thanks so much
Dafna1 [17]

The <em>surface</em> area of the parallelpiped is equal to 800 square units.

<h3>What is the surface area of a parallelpiped?</h3>

The <em>surface</em> area of the parallelpiped seen in the picture is equal to the sum of the areas of its six faces, which are combination of areas of quadrilaterals and triangles. There are four parallelograms and two squares. Thus, the surface area of the solid is:

A = 2 · 8 · 20 + 2 · 7 · 20 + 2 · 10²

A = 800

The <em>surface</em> area of the parallelpiped is equal to 800 square units.

To learn more on parallelpipeds: brainly.com/question/14950719

#SPJ1

5 0
2 years ago
Gabriel is at the grocery store, and wants to figure out his total cost before he gets to the register. He bought 2.5 pounds of
Readme [11.4K]

Answer:

32 - 2.5x - 2y

Step-by-step explanation:

He bought 2.5 pounds weight of apples for x dollars a pound. Thus, cost is 2.5x.

He bought 2 bags of lettuce for y dollars each. Thus, cost is 2y

Total bill cost = 2.5x + 2y

We are told he has a coupon for $2 off his bill.

This means the amount he will pay will now be;

2.5x + 2y - 2

Gabriel has $30 to pay for the groceries.

Thus, his change will be;

30 - (2.5x + 2y - 2)

This gives;

32 - 2.5x - 2y

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3 years ago
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This really doesn't have to do with school or anything but I just wanted to ask, How are you today or how do you feel?
antiseptic1488 [7]

Answer:

Step-by-step explanation:

I'm doing great. Helping as much people as i can on here today. wbu?

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3 years ago
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Find a cubic polynomial that goes through points (4, – 22) and (3, - 26) and has tangents with slopes
Salsk061 [2.6K]

Let <em>f(x)</em> = <em>ax</em> ³ + <em>bx</em> ² + <em>cx</em> + <em>d</em>.

The graph of <em>f(x)</em> passes through (4, -22) and (3, -26), which means <em>f</em> (4) = -22 and <em>f</em> (3) = -26, so that

64<em>a</em> + 16<em>b</em> + 4<em>c</em> + <em>d</em> = -22

27<em>a</em> + 9<em>b</em> + 3<em>c</em> + <em>d</em> = -26

When the question says it has tangents at some point, I take that to mean the slope of the tangent line at that point is the given number. So <em>f '</em> (4) = 11 and <em>f '</em> (3) = -2. We have

<em>f '(x)</em> = 3<em>ax</em> ²+ 2<em>bx</em> + <em>c</em>

so that

48<em>a </em>+ 8<em>b </em>+ <em>c</em> = 11

27<em>a </em>+ 6<em>b</em> + <em>c</em> = -2

Solve the system:

• Eliminate <em>d</em> :

(64<em>a</em> + 16<em>b</em> + 4<em>c</em> + <em>d</em>) - (27<em>a</em> + 9<em>b</em> + 3<em>c</em> + <em>d</em>) = -22 - (-26)

→   37<em>a</em> + 7<em>b</em> + <em>c</em> = 4

• Eliminate <em>c</em> :

(48<em>a </em>+ 8<em>b </em>+ <em>c</em>) - (27<em>a </em>+ 6<em>b</em> + <em>c</em>) = 11 - (-2)

→   21<em>a</em> + 2<em>b</em> = 13

(48<em>a </em>+ 8<em>b </em>+ <em>c</em>) - (37<em>a</em> + 7<em>b</em> + <em>c</em>) = 11 - 4

→   11<em>a</em> + <em>b</em> = 7

• Eliminate <em>b</em>, then solve for <em>a</em> and the other variables:

(21<em>a</em> + 2<em>b</em>) - 2 (11<em>a</em> + <em>b</em>) = 13 - 2 (7)

-<em>a</em> = -1

<em>a</em> = 1   →   <em>b</em> = -4   →   <em>c</em> = -5   →   <em>d</em> = -2

Then

<em>f(x)</em> = <em>x</em> ³ - 4<em>x</em> ² - 5<em>x</em> - 2

7 0
4 years ago
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