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nalin [4]
3 years ago
12

Can somebody please help me figure this out?

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
5 0

Answer: You would put the 35° and the 4x+7° equal to each other.

Step-by-step explanation:

    1. 4x+7=35  

    2. 4x+7=35   -> Subtract 7 from the positive 7 and the 35

           -7     -7

    3. 4x=28       -> Divide 4x and 28

    4. x=7

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Need help asap<br> will give brainly
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Answer:

(5,3)

Step-by-step explanation:

When you go around origin, all it is does is it turns (x,y) into (-x,-y). (--5,--3) = (5,3)

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3 years ago
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42,300 multiply by 10 can someone show the work
Assoli18 [71]
       10
x42,300
-------------
          00
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The following function is probability mass function. f left-parenthesis x right-parenthesis equals StartFraction 2x plus 1Over 2
lora16 [44]

Answer:

a) Mean  = 2.6

B) Variance = 9.2

Step-by-step explanation:

We are given the following probability mass function in the question:

F(x) = \dfrac{2x+1}{25}, x = 0,1,2,3,4

a) Mean of random variable

\mu = \displaystyle\sum x_iF(x_i)\\\\=0(\dfrac{1}{25}) + 1(\dfrac{2+1}{25}) + 2(\dfrac{4+1}{25}) + 3(\dfrac{6+1}{25}) + 4(\dfrac{8+1}{25})\\\\=\dfrac{3+10+21+36}{25} = \dfrac{70}{25} = 2.8

b) Variance of the random variable

\sigma^2 = \displaystyle\sum x_i^2F(x_i)\\\\=0^2(\dfrac{1}{25}) + 1^2(\dfrac{2+1}{25}) + 2^2(\dfrac{4+1}{25}) + 3^2(\dfrac{6+1}{25}) + 4^2(\dfrac{8+1}{25})\\\\=\dfrac{3+20+63+144}{25} = \dfrac{230}{25} = 9.2

6 0
3 years ago
64% of students will apply for graduate school. from a sample of 100 students, 52 stating that they will apply for grad school.
lana66690 [7]

Answer:

you<u> accept </u>the alternative hypothesis

Step-by-step explanation:

The null and alternative hypothesis can be computed as follows:

H_o: p = 0.64 \\ \\ H_1: p \le 0.64

The sample proportion \hat p = \dfrac{x}{n}

\hat p = \dfrac{52}{100}

\hat p = 0.52

The test statistics can be computed as:

Z = \dfrac{\hat p -p_o}{ \sqrt{ \dfrac{p_o \times (1-p_o)}{ n} }}}

Z = \dfrac{0.52 -0.64}{ \sqrt{ \dfrac{0.64 \times (1-0.64)}{ 100} }}}

Z = -2.5

The P-value = 2( Z< -2.5)

From the tables;

The P-value = 2 (0.0062)

The P-value = 0.0124

The significance level = 0.01

Since the P-value is > significance level; we fail to reject the null hypothesis.

Conclusion: we accept the alternative hypothesis

7 0
3 years ago
The restaurant’s location has the same x-coordinate as City Hall but the opposite Y-coordinate. In which quadrant is the restaur
True [87]

Answer:

Quadrant lll

Step-by-step explanation:

The coordinates of the restaurant are (-1, -0.5)

Both coordinates negative means quadrant lll

3 0
3 years ago
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