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faltersainse [42]
3 years ago
13

Please help me I don’t understand this

Mathematics
1 answer:
Lyrx [107]3 years ago
6 0
When you're given a point and the slope of a line, it is often easiest to write its equation in point-slope form.

This is y-y_1=m(x-x_1), where (x_1,y_1) is the ordered pair for the point you are given and m is the slope.

Here, you would write y-8=-3(x-7). Then, you simplify to get to slope-intercept form, which is y = mx+b, where b is the y-intercept.

y-8=-3(x-7) \\ y=-3x+29

The correct answer is A.
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-12 = 4x + 1<br> solve<br> algebra
Eddi Din [679]

Answer:

x=-\frac{13}{4}

Step-by-step explanation:

-12=4x+1\\4x=-12-1\\x=-\frac{13}{4}

4 0
3 years ago
How to find area of triangle
torisob [31]

Answer:

\displaystyle A =\frac{B*H}{2}

Step-by-step explanation:

    To find the area of a triangle, we can use the formula of:

\displaystyle A =\frac{B*H}{2}

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3 0
2 years ago
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What happens to the width of a confidence interval for a population mean if the level of confidence is increased without changin
natulia [17]

Answer: If the level of confidence is increased without changing the sample size then<em> </em><u><em>The margin of error will decrease because the critical value will decrease. The decreased margin of error will cause the confidence interval to be narrower.</em></u>

where;

<em>Margin of error = Critical value × Standard deviation</em>

<em>Here, it can be duly noted that Margin of error has a positive relation with critical value, i.e </em><u><em>The margin of error will decrease because the critical value will decrease.</em></u>

<u><em>whereas;</em></u>

The confidence interval is  <em>the value  ±  the margin of error.</em>

<em>Therefore, </em><u><em>the decreased margin of error will cause the confidence interval to be narrower.</em></u>

7 0
3 years ago
4. The sum of iwo numbers is 36. Twice the first
Ludmilka [50]

Answer:

  14 and 22

Step-by-step explanation:

If x is the first number, then 36-x is the second. We are told that ...

  2x -(36-x) = 6 . . . . twice the first less the second is 6

  3x = 42 . . . . . . . . . add 36

  x = 14

  (36 -x) = 22

The numbers are 14 and 22.

4 0
3 years ago
Inverse of y=x^2-10x
Fittoniya [83]

The answer is f(x)‐¹=(+/-)x+25+5

7 0
3 years ago
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