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3 years ago

Helppp me pleaseeeeeee

Mathematics

1 answer:

MAXImum [283]3 years ago

3 0

Circumference = πD

π*49 = 153.94 (We can leave it as it is because there are two halves to the circle on either side of the training track)

81*2 = 162 (There are two 81 meter lines)

153.94+162 = 315.94m

The length of the training track is 315.94m

Hope this helps! :)

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47 in = ? ft ? in 3 ft 11 in 4 ft 0 in 3 ft 9 in 564 ft 0 in

Veseljchak [2.6K]

Answer:

3ft 11 in

Step-by-step explanation:

1 foot equals 12 inches, 12 × 3 = 36 = 3 feet + 11 inches = 47 inches = 3ft 11in

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3 years ago

Suppose that LMN is isosceles with base LN suppose that M

ira [324]

Given:

In an isosceles triangle LMN, LM=MN.

$m\angle M=(3x+17)^\circ,m\angle L=(2x+36)^\circ$

To find:

The measure of the angles L, M and N.

Solution:

In triangle LMN,

$LM=MN$ (Given)

$m\angle N=m\angle L=(2x+36)^\circ$ (Base angles of an isosceles triangle are equal)

Now,

$m\angle L+m\angle M+m\angle N=180^\circ$

$(2x+36)^\circ+(3x+17)^\circ+(2x+36)^\circ=180^\circ$

$(7x+89)^\circ=180^\circ$

$(7x+89)=180$

On further simplification, we get

$7x=180-89$

$7x=91$

$x=\dfrac{91}{7}$

$x=13$

The value of x is 13. Using this value, we get

$m\angle L=(2(13)+36)^\circ$

$m\angle L=(26+36)^\circ$

$m\angle L=62^\circ$

Similarly,

$m\angle M=(3(13)+17)^\circ$

$m\angle M=(39+17)^\circ$

$m\angle M=56^\circ$

And,

$m\angle N=m\angle L$

$m\angle N=62^\circ$

Therefore, the measure of angles are $m\angle L=62^\circ,m\angle M=56^\circ,m\angle N=62^\circ$ .

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3 years ago

A study conducted an experiment with 22,000 women over 10 years to investigate whether a high-stress job leads to heart problems

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The sample of the group would be the 22,000 participants.

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3 years ago

The U.S. Bureau of Labor Statistics reports that 11.3% of U.S. workers belong to unions. Suppose a sample of 400 U.S. workers is

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Answer:

1 is the answer

Step-by-step explanation:

Given that the U.S. Bureau of Labor Statistics reports that 11.3% of U.S. workers belong to unions.

$H_0: p=0.113\\H_a: p >0.113$

(Right tailed test for testing of a sample proportion with population proportion)

Suppose a sample of 400 U.S. workers is collected in 2014 to determine whether union efforts to organize have increased union membership at 0.025 level of significance.

Test statistic Z = 1.31

p value for this right tailed test would be 0.095

This p value is greater than 0.025

Hence at 2.5% significance level the conclusion is correct

1 is the answer.

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4 years ago

Expanded form of the number is ten million more than 280,509,031

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280, 509,031 + 10,000,000 = 290, 509,031

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3 years ago