Convert each unit of length

4x - 20 =-44 I need the answer ASAP

Trava [24]

Answer:

x=8

Step-by-step explanation:

44-20=24

24/4=8

3 0

2 years ago

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From a point on the ground 47 feet from the foot of a tree, the angle of elevation to the top of the tree is 35º. Find the heigh

frez [133]

Answer:

Step-by-step explanation:

49.4 degrees

Step-by-step explanation:

In Triangle AXY,

We want to determine the angle of elevation from the point is standing to the top of the flagpole, which is the angle at V in the diagram.

In Triangle XVY

|VY|=36 feet

Therefore, the angle of elevation from the point is standing to the top of the flagpole is 49.4 degree to the nearest tenth of a degree.

I think i might of clicked on gthe wrong question sorry

5 0

2 years ago

HELP NOwwwwWWWW ILL GIVE BRAINLIEST

Elza [17]

Answer: -7/3

Step-by-step explanation:

Perpendicular lines have slopes that are negative reciprocals of each other.

6 0

2 years ago

Match each function with its correct description. f(x) = (-x + 1)3(x + 2)2(x − 3) f(x) = (-2x + 1)2(x − 3)2(x + 1) f(x) = (x + 6

Leviafan [203]

Answer:

Pairs The degree of the function is 4, and the leading coefficient is positive. arrowBoth

f(x) = (x + 6)(2x − 3)(x − 1)2

The degree of the function is 5, and the leading coefficient is positive. arrowBoth:

f(x) = (x − 2)2(-2x − 1)2(-x + 1)

The degree of the function is 5, and the leading coefficient is negative. arrowBoth:

f(x) = (-2x + 1)2(x − 3)2(x + 1)

The degree of the function is 6, and the leading coefficient is negative. arrowBoth:

f(x) = (-x + 1)3(x + 2)2(x − 3)

5 0

3 years ago

Read 2 more answers

Use the t-distribution and the given sample results to complete the test of the given hypotheses. Assume the results come from r

Sergio [31]

Answer:

(A) The value of t test statistics is 2.767 and P-value is 0.0042.

(B) We conclude that the mean of first group is greater than the mean of second group.

Step-by-step explanation:

We are given the following hypothesis below;

Null Hypothesis, $H_0$ : $\mu_1=\mu_2$ {means that the mean of first group is equal to the mean of second group}

Alternate Hypothesis, $H_A$ : $\mu_1>\mu_2$ {means that the mean of first group is greater than the mean of second group}

The test statistics that would be used here Two-sample t-test statistics as we don't know about population standard deviation;

T.S. = $\frac{(\bar X_1-\bar X_2)-(\mu_1-\mu_2)}{s_p\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } }$ ~ $t__n__1-_n__2-2$

where, $\bar X_1$ = sample mean of first group = 56

$\bar X_2$ = sample mean of second group = 51

$s_1$ = sample standard deviation of first group = 8.2

$s_2$ = sample standard deviation of second group = 6.9

$n_1$ = sample of first group = 30

$n_2$ = sample of second group = 40

Also, $s_p=\sqrt{\frac{(n_1-1)s_1^{2} +(n_2-1)s_2^{2} }{n_1+n_2-2} }$ = $\sqrt{\frac{(30-1)\times 8.2^{2} +(40-1)\times 6.9^{2} }{30+40-2} }$ = 7.482

So, the test statistics = $\frac{(56-51)-(0)}{7.482 \times \sqrt{\frac{1}{30} +\frac{1}{40} } }$ ~ $t_6_8$

= 2.767

(A) The value of t test statistics is 2.767.

Also, P-value of the test statistics is given by;

P-value = P( $t_6_8$ > 2.767) = 0.0042

(B) Now, at 10% significance level the t table gives critical value of 1.295 at 68 degree of freedom for right-tailed test.

Since our test statistic is more than the critical values of t as 2.767 > 1.295, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that the mean of first group is greater than the mean of second group.

8 0

3 years ago

Convert each unit of length​

Convert each unit of length