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3 years ago

What is the solution of the system? Use the graph. y=x+5 y=-5x-1

1 answer:

3 0

Y = x + 5
y = -5x -1

so than you make y = y so x + 5 = -5x -1 result 6x = -6 so x = -6/6 so x = -1
and than you check it

y = - 1 +5 = 4
and
y = - 5 *(-1) -1 = 5 -1 = 4

so this mean that - 1 is the solution of the system sure

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Which of the following expressions is equal to tan205°?

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2 years ago

I need help with 17, 19, 21, and 23.

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3 years ago

Read 2 more answers

Drag each volume of a prism to match a rectangular prism

Hunter-Best [27]

The volume of the rectangular prism with the dimensions given are as follows:

v = 72 inches³

v = 36 inches³

v = 80 inches³

v = 54 inches³

<h3>Volume of a rectangular prism</h3>

v = lwh

where

l = length

w = width

h = height

Therefore,

v = 4 × 3 × 6 = 72 inches³

v = 6 × 3 × 2 = 36 inches³

v = 4 × 5 × 4 = 80 inches³

v = 2 × 9 × 3 = 54 inches³

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1 year ago

Please I really need this answer doing cumulative exam!!!

ivanzaharov [21]

An equation is formed of two equal expressions. The correct option is x+y=557 and Three-fifths(x)+five-sixths(y)=407.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Let the total number of pages in the shorter book be represented by x, and the total number of pages in the longer book be represented by y.

Given the total number of pages of the shorter book and the longer book is 557. Therefore, the equation can be written as,

x+y =557

Also, Scott reads Three-fifths of the shorter book and StartFraction 5 Over 6 EndFraction of the longer book, which is equal to 407 pages. Therefore,

(3/5)x + (5/6)y = 407

Hence, the correct option is x+y=557 and Three-fifths(x)+five-sixths(y)=407.

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2 years ago

Use a graphing calculator to find the value of the correlation coefficient r and determine if there is a strong correlation amon

Natali [406]

The value of the correlation is -0.0721 and it is a weak negative correlation

<h3>How to determine the correlation coefficient?</h3>

The points are given as:

(12, 28), (15, 50), (18, 14), (21, 28), (24, 36)

Enter the above points in a graphing calculator.

From the graphing calculator, we have the following summary:

<u>X Values</u>

Sum X = 90
Mean = 18
∑(X - Mx)^2 = SSx = 90

<u>Y Values</u>

Sum Y = 156
Mean = 31.2
∑(Y - My)^2 = SSy = 692.8

<u>X and Y Combined</u>

N = 5
∑(X - Mx)(Y - My) = -18

<u>R Calculation</u>

r = ∑((X - My)(Y - Mx)) / √((SSx)(SSy))

This gives

r = -18 / √((90)(692.8)) = -0.0721

So, the correlation coefficient is -0.0721

The above is a negative correlation because it is less than 0 and it is a weak correlation because it is closer to 0 than -1

Hence, the correlation is a weak negative correlation

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2 years ago