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nlexa [21]
3 years ago
15

Can someone explain this?

Mathematics
2 answers:
natulia [17]3 years ago
8 0

Answer:

58 degrees

Step-by-step explanation:

(x+45)+(x+66)=95

2x+45+66=95

2x+111=95

2x=95-111

2x=-16

x=-16/2

x=-8

x+66=-8+66=58

yan [13]3 years ago
5 0
<h3>Answer: angle JML is 58 degrees (choice C)</h3>

=======================================

Explanation:

Check out the attached image below. I have marked the angles with A, B, and C such that

A = angle NMJ = x+45 (in red)

B = angle JML = x+66 (in blue)

C = angle NML = 95 (in green)

The two angles A and B combine to form angle C. Angles A and B are adjacent angles.

So,

A+B = C

(x+45) + (x+66) = 95

2x+111 = 95

2x+111-111 = 95-111  .... subtract 111 from both sides

2x = -16

2x/2 = -16/2 .... divide both sides by 2

x = -8

From here we can find the angle measures

A = angle NMJ = x+45 = -8+45 = 37 degrees

B = angle JML = x+66 = -8+66 = 58 degrees

As a check,

A+B = 37+58 = 95 = C

so the answer is confirmed.

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max2010maxim [7]

Answer:

Step-by-step explanation:

To answer this question we should analyze both functions :

  • the intercepts with the x-axis are the numbers when a function f(x)=0

here we must solve both equations :

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Answer:

A.26

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Step-by-step explanation:

A. Using the Pythagorean theorem, we get x^2= 24^2+10^2. Solving for x, we get x=26.

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6 0
3 years ago
Taking a test i don’t know anything about please help
PilotLPTM [1.2K]

Answer:

See below for answers and explanations

Step-by-step explanation:

<u>Problem 4:</u>

The line of regression is \hat y = a+bx where:

a=\overline y-b \overline x

b=\frac{r*s_y}{s_x}

We are given that \overline y=75, s_y=8, \overline x=280, s_x=30, and r=0.60, therefore our slope, b, is:

b=\frac{r*s_y}{s_x}

b=\frac{(0.60)(8)}{30}

b=0.16

Therefore, the slope of the regression line is 0.16, which can be used along with the values of \overline y and \overline x to find the constant a:

a=\overline y-b \overline x

a=75-(0.16)(280)

a=30.2

This means our final regression line is \hat y = 30.2 + 0.16x

<u>Problem 5:</u>

The slope, b=0.16, means that for every 1 point earned for a student's pre-exam total, their final exam score will increase by 0.16 points for each point they earned on the pre-exam.

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The y-intercept (or constant), a=30.2, means that if a student's pre-exam total were 0, then they would expect to get a 30.2 on the final exam.

<u>Problem 7:</u>

R^{2}=(0.60)^{2}=0.36=36\%

<u>Problem 8:</u>

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A set of six single-digit integers has a unique mode of 2. What is the largest possible
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Answer:

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Step-by-step explanation:

We can assume that 2 is the smallest integer in the set. That means we would have a minimum of 2 2s. Then the largest integer in the set is 9. Since we can't have more than one 9 (due to the mode of 2), the next largest number we can have is 8. After that would be 7. Then the last digit would be 6. So now the set contains { 2, 2, 6, 7, 8, 9}. To find the median in an even set, we need to take the middle numbers and find the average. In this case, the two numbers are 6 and 7. The average of 6 and 7 is 6.5.

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