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3 years ago

Which point is a solution to the equation Y = 4x - 5 A. (-3,-17) B. (4,7) C. -2,-18) D. (3,17)

Mathematics

1 answer:

Fittoniya [83]3 years ago

6 0

Answer:

Step-by-step explanation:

To determine which point is a solution, substitute the x- coordinate into the equation and if the value obtained agrees with the y- coordinate of the point then it is a solution.

A (- 3, - 17)

y = 4(- 3) - 5 = - 12 - 5 = - 17 ← (- 3, - 17) is a solution

B (4, 7)

y = 4(4) - 5 = 16 - 5 = 11 ≠ 7 ← not a solution

C (- 2, - 18)

y = 4(- 2) - 5 = - 8 - 5 = - 13 ≠ - 18 ← not a solution

D (3, 17)

y = 4(3) - 5 = 12 - 5 = 7 ≠ 17 ← not a solution

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Are the statements true or false?

MrMuchimi

Answer:

It Is true and then false

Step-by-step explanation:

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3 years ago

Which equation represents the data shown in the table provided in the image?

VladimirAG [237]

The correct answer is A. y = 2x +1

Explanation:

An equation is a statement that shows equality. In this context, the equation should lead to two equal numbers even if the values of y and x change. In this context, the correct equation is y= 2X + 1 because this is the only one, in which, the value of Y is always equivalent to 2x + 1. To prove this, let's replace y and x for the values of the table.

First column

5 = 2 · 2 + 1

5 = 4 + 1

5 = 5

Second Column

9 = 2 · 4 + 1

9 = 8 + 1

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Third column

13 = 6 · 2 + 1

13 = 12 + 1

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4 0

2 years ago

suppose the mean 40 yard dash time of a perfessional football player is 4.41 seconds with a standard deviation of 0.15 seconds.

I am Lyosha [343]

The percent of runners between these two times is 47.72.

We find the z-scores associated with each end of this interval using the formula
z=(X-μ)/σ

For the lower end,
z=(4.11-4.41)/0.15 = -0.3/0.15 = -2

Using a z-table (http://www.z-table.com) we see that the area to the left of, less than, this score is 0.0228.

For the upper end:
z=(4.41-4.41)/0.15 = 0/0.15 = 0

Using a z-table we see that the area to the left of, less than, this score is 0.5000.

We want the area between these times, so we subtract:
0.5000-0.0228 = 0.4772

This corresponds with 47.72%.

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2 years ago

Please help me GENIUS Rank

riadik2000 [5.3K]

<h2>Hey there!</h2>

<h3>Here's your required mode </h3>

<h3>Refer to the image above </h3>

<h3>And btw,in the earlier question I've done for mean also you can check that again which I've answered earlier. </h3>

<h2>Hope it helps</h2>

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2 years ago

If the area of Bianca’s rectangular backyard patio is represented by the expression x2 – 18x + 81, and the length of the patio i

Verizon [17]

<u>1) </u> $width=x-9$

2) Rectangular shape is square shape patio !

<u>Step-by-step explanation:</u>

Here we have , the area of Bianca’s rectangular backyard patio is represented by the expression x2 – 18x + 81, and the length of the patio is represented by the expression x − 9: We need to find

1. what is the expression for the width of the patio? Explain and show all work.

We know that area of rectangle = $Length(width)$