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AlekseyPX
4 years ago
8

For y=4×+2x^2-x^3, show how to find the value of y when x=2

Mathematics
1 answer:
Talja [164]4 years ago
7 0
Just put two instead of x like y = 4.2+2.4(2 squared)-8(cubic 2) that gives y= 8+8-8= 8 then y equals 8
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Triangle EFG is an isosceles triangle with EG=EF. What is the approximate length of EF, and what is the approximate perimeter of
sineoko [7]

Answer:

B. The approximate length of EF is 4.47 units, and the approximate perimeter of triangle EFG is 12.94 units.

Step-by-step explanation:

First step is to determine the length of EF, since that will give us 2 sides of the triangle (since EG = EF).

From the diagram, we can easily make a rectangle triangle by dropping a vertical line from vertex E, let's name Z the meeting point of that line with the segment GF.  Then we have a rectangle triangle EZF with a height of 4 and a base of 2, of which EF is the hypotenuse. So...

EF² = 4² + 2² = 16 + 4 = 20

EF = √20 = 4.47

Now that we have EF, we also have EG:

EF = 4.47

EG = 4.47

GF = 4 (visible on the graph)

Perimeter = 4.47 + 4.47 + 4 = 12.94 units.

7 0
3 years ago
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Three friends each bought two slices of pizza and a drink at the mall. If drinks cost $0.75 and the total of their order was $11
monitta

Answer:

I believe it's $1.50

Step-by-step explanation:

5 0
3 years ago
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Calculate (a) the total installment price, (b) the carrying charges, and (c) the number of months needed to save the money at th
Paraphin [41]
8.50 + 11 (24) = 272.50 
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<span>divide $11 into 200</span>
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3 years ago
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Chris answered 61 out of 66 questions correctly on a test. What is his test average to the nearest thousandth
mars1129 [50]
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3 years ago
In the 30-60-90 triangle below, side s has a length of
mario62 [17]

Answer:

4, 4√3

Step-by-step explanation:

In a 30-60-90 triangle:

The leg opposite of the 30-degree angle is 1/2 of the hypotenuse: 8/2 = 4

The longer leg is √3 times the shorter leg: 4*√3 = 4√3

Check work: 4^2+(4√3)^2 = 8^2 --> 16+48 = 64 --> 64 = 64

7 0
2 years ago
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