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balu736 [363]
3 years ago
7

I am confused on how to do this

Mathematics
1 answer:
babymother [125]3 years ago
4 0
So, u would start by expanding the bracket and ignoring the 2 at the moment.
(x+9)(x+9)= x^2-18x+81(using the foil method!

Then u would put 2 at the front to get:
2(x^2+18x+81)
= 2x^2+36x+162
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Solve 3/5=8/y. Round to the nearest tenth. 15.2 9.8 13.3 18.8
Sidana [21]
3/5 = 3/y
40 = 3y
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4 years ago
Calculating Rate of change
ivolga24 [154]

Answer/Step-by-step explanation:

We are given the following coordinates of two points on the line of the graph shown in the question as: A(2, 1) and B(4, 2)

Vertical change from point A = y_2 - y_1 = 2 - 1 = 1

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3 0
3 years ago
Help....!! I need to solve this simultaneous equation y=x-2 and y=3x+5 With working out if possible please....
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Step-by-step explanation:

Y= x - 2. Y = 3x + 5

Putting value of y

x - 2 = 3x + 5

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Y = 3(-7/2) + 5

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6 0
3 years ago
Let ​f(x)=x^2 and ​g(x)=x-3. Find ​(f​ º g)(​-1).
ValentinkaMS [17]

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Step-by-step explanation:

8 0
4 years ago
I NEED HELP ASAP
loris [4]

Answer:

V = PI*r2h

In plain english the volume of a cylinder can be calculated by squaring the radius, multiplying that value by PI, then multiplying by the height. You can also think of it as finding the area of a flat circle (PI * radius squared) and multiplying by the height to find volume.

Here is a step-by-step case that illustrates how to find the volume of a cylinder with a radius of 3 inches and a height of 5 inches. In this example PI will be 3.14.

V = pi * r2 * h

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= 3.14 * 45

= 141.37 cubic inches

Step-by-step explanation:

The formula for the volume of a cylinder is V=Bh or V=πr2h . The radius of the cylinder is 8 cm and the height is 15 cm.

6 0
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