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3 years ago

Whats the vertex of the graph y=-x^2

1 answer:

6 0

(0,0) you could use x=-b/2a but since your b term is nonexistant the whole term goes to 0 for the x value. Plug x=0 into the original equation which gives you another 0. ezpz

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The first side of a triangle is 7cm less than twice the second side. The third side is 4cm longer than the first side. The perim

Vinil7 [7]

Given:

First side(A): 2B - 7

Second side(B): B

Third side(C): B + 4

Plug in values:

A + B + C = 80

2B - 7 + B + B + 4 = 80

If you look at the coefficients only, you can rewrite the equation like this:

2B + B + B - 7 + 4 = 80

This means that 4B - 7 + 4 = 80

=4B - 3 = 80

= 4B = 80 + 3

B = 83/4, so you can either write B as 83/4 or as 20.75.

Checking your work:

A: 2(20.75) - 7 = 34.5

B: 20.75

C: 4 + 20.75 = 24.75

34.5 + 20.75 + 24.75 = 80cm.

Hope this helped.

3 0

3 years ago

Find the slope of the line passing through the points (1, -5) and (4, 1).

wlad13 [49]

The slope of line passing through the points (1, -5) and (4, 1) is 24

Step-by-step explanation:

Slope is the steepness of a line passing through given points

Given points are:

(x1,y1) = (1, -5)

(x2,y2) = (4,1)

The slope is denoted by m. The formula for slope is:

$m=\frac{y_2-y_1}{x_2-x_1}\\=\frac{1-(-5)}{4-1}\\=\frac{6}{3}\\=2$

The slope of line passing through the points (1, -5) and (4, 1) is 2

Keywords: Slope, Calculation of slope

Learn more about slope at:

#LearnwithBrainly

7 0

3 years ago

A snowmaking machine makes 3/4 inch of snow each minute. How many inches of snow can the machine make in 8 minutes?

Mnenie [13.5K]

Answer:

Step-by-step explanation:

8 minutes × (¾ inch)/minute = 8×¾ inches = 6 inches

3 0

3 years ago

Find the length of the leg. If your answer is not an integer, leave it in simplest radical<br> form

Setler [38]

Step-by-step explanation:

${14}^{2} = 2 {a}^{2} \\ 2 {a}^{2} = 196 \\ {a}^{2} = 98 \\ a = \sqrt{98 } = \sqrt{49 \times 2} \\ = 7 \sqrt{2}$

7 0

3 years ago

Find the value of a in the parallelogram.

S_A_V [24]

6a-4 = 3a+54
3a = 58
a = 58/3
a= 19.333

3 0

2 years ago