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natulia [17]
3 years ago
6

Find the value of the variable.

Mathematics
1 answer:
NemiM [27]3 years ago
7 0

Answer:

x=y[base side of isosceles triangle]

x²+y²=19²

x=√{19²/2)}

x=13.44

y=13.44

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Correct answer will get brainliest
Sophie [7]

Answer:

4.) Choice B

    &

5.) Choice A

Step-by-step explanation:

<em><u>Question 4:</u></em>

First you have to solve for y to get slope intercept form.

2x-5y=6\\5y=-2x+6\\y=-\frac{2}{5}x+\frac{6}{5}

The slope is a fraction but you need it to convert it to a decimal so that'll be Choice B.

<em><u>Question 5:</u></em>

For this one I we will use this formula m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

I will choose the easy pairs to plug it in (-12,-2) (20,6)

\frac{6--2}{20--12}\\\\\\\frac{8}{32}=\frac{1}{4}

The slope is a fraction again but you can convert it and that'll be Choice A.

5 0
3 years ago
An item was bought for £200. It was sold for £80. What was the percentage loss?
Agata [3.3K]

Answer:

0.6 or 60%.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
How would the expression x^3 - 64 be rewritten using difference of cubes? A. (x + 4)(x^2 - 4x + 16) B. (x-4)(x^2 + 4x + 16) C. (
slavikrds [6]

Answer:

D)

Step-by-step explanation:

4 is an evident zero of the equation x^3 - 64.

x^3 - 64 can only be factorized with (x-4) and not with (x+4)

because x - 4 = 0 <==> x = 4 and 4^3 -64 = 0

Developing B) would be:

x^3 + 4x^3 + 16x - 4x^2 - 16x - 64 = 5x^3 - 4x^2 -64

So it doesn't match so it's D)

3 0
2 years ago
Find slope x-intercept=5,y-intercept=3
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Intercepts<span> occur when a line crosses the </span>x<span>-axis or the </span>y<span>-axis. When the line crosses the </span>x<span>-axis, then </span>y<span> = 0 and </span>x<span> = </span>3<span>. ... The </span>intercept<span> points are (0, 4) and (</span>3<span>, 0 ). So the </span>y-intercept<span> is 4 and the </span>x intercept<span> is </span>3<span> and the sum is 7.</span>
7 0
4 years ago
Which range of time values describes the entire interval over which she would be interpolating
horsena [70]
Answer: first option 0 to 30 minutes.

Jusitification:

Interpolation is the prediction of an intermediate value using a linear model.

In this case, she has the data for 0, 5, 10, 15, and 30 minutes.

So, she can interpolate between any pair of consecutive data to find an intermediate value.

For example: i) if she wants the value for 20 minutes, she can interpolate between 15 and 30 minutes, ii) if she wants the value for 7 minutes, she can interpolate between 5 and 10 minutes, iii) if she wants the value for 12 mintues, she will interpolate between 10 and 15 minutes.

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4 years ago
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