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Gnoma [55]
3 years ago
11

chuck earned $76 mowing lawns.the gas for the mower cost $12 and he bought a new string for the trimmer for $7.write and find th

e value of an integer expression to find the amount of his profit.
Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
3 0
76 - 12 = 64 - 7 = 57
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If a || b, m<2=63°, and m<9=105°, find the measure of missing angle m<1=?
worty [1.4K]

Given:

a.) ∠9 = 105°

b.) ∠2 = 63°

Step 1: Determine the measure of ∠10.

∠9 and ∠10 are Supplementary Angles. This means that the sum of the two angles is equal to 180°.

From this, we generate the following equation:

\text{ }\angle9\text{ + }\angle10=180^{\circ}

Let's then now proceed to find out the measure of ∠10.

\text{ }\angle9\text{ + }\angle10=180^{\circ}\text{ }105^{\circ}\text{ + }\angle10=180^{\circ}\angle10=180^{\circ}\text{ - }105^{\circ}\angle10=75^{\circ}

Step 2: Determine the measure of ∠3.

∠10 and ∠3 are Alternate Exterior Angles. Under this, the two angles must be congruent.

\text{ }\angle3\text{ = }\angle10

Therefore,

\text{ }\angle3\text{ = }\angle10\text{ }\angle3=75^{\circ}

Step 3: Determine the measure of ∠1.

∠1, ∠2 and ∠3 are also Supplementary Angles. This means that the sum of the three angles is equal to 180°.

Thus, we generate the equation below:

\text{ }\angle1\text{ + }\angle2\text{ + }\angle3=180^{\circ}

Let's now find the measure of ∠1,

\text{ }\angle1\text{ + }\angle2\text{ + }\angle3=180^{\circ}\text{ }\angle1\text{ + }63^{\circ}\text{ + }75^{\circ}=180^{\circ}\text{ }\angle1\text{ + }138^{\circ}=180^{\circ}\text{ }\angle1\text{ }=180^{\circ}\text{ - }138^{\circ}\text{ }\angle1\text{ }=42^{\circ}

Therefore, the measure of ∠1 is 42°.

8 0
1 year ago
Please help will give brainliest
Crazy boy [7]
What do you need help with
4 0
3 years ago
Which situation shows the appropriate use of the law of large numbers? . a. Wilma predicts rolling a 2 about 50 times if she rol
Nata [24]
"<span>Wilma predicts rolling a 2 about 50 times if she rolls a die 300 times" is the one situation among the following choices given in the question that shows the </span><span>appropriate use of the law of large numbers. The correct option among all the options that are given in the question is the first option or option "a". I hope it helped you.</span>
7 0
3 years ago
The breaking strengths of cables produced by a certain manufacturer have a mean, , of pounds, and a standard deviation of pounds
olchik [2.2K]

The question is incomplete. The complete question is :

The breaking strengths of cables produced by a certain manufacturer have a mean of 1900 pounds, and a standard deviation of 65 pounds. It is claimed that an improvement in the manufacturing process has increased the mean breaking strength. To evaluate this claim, 150 newly manufactured cables are randomly chosen and tested, and their mean breaking strength is found to be 1902 pounds. Assume that the population is normally distributed. Can we support, at the 0.01 level of significance, the claim that the mean breaking strength has increased?

Solution :

Given data :

Mean, μ = 1900

Standard deviation, σ = 65

Sample size, n = 150

Sample mean, $\overline x$ = 1902

Level of significance = 0.01

The hypothesis are :

$H_0 : \mu = 1900$

$H_1 : \mu > 1900$

Test statics :

We use the z test as the sample size is large and we know the population standard deviation.

$z=\frac{\overline x - \mu}{\sigma / \sqrt{n}}$

$z=\frac{1902-1900}{65 / \sqrt{150}}$

$z=\frac{2}{5.30723}$

$z=0.38$

Finding the p-value:

P-value = P(Z > z)

             = P(Z > 0.38)

             = 1 - P(Z < 0.38)

From the z table. we get

P(Z < 0.38) = 0.6480

Therefore,

P-value = 1 - P(Z < 0.38)

            = 1 - 0.6480

             = 0.3520

Decision :

If the p value is less than 0.01, then we reject the H_0, otherwise we fail to reject  H_0.

Since the value of p = 0.3520 > 0.01, the level of significance, then we fail to reject  H_0.

Conclusion :

At a significance level of 0.01, we have no sufficient evidence to support that the mean breaking strength has increased.

4 0
3 years ago
If i have 38 assignments and i do 15 of them what percentage do i have done?
netineya [11]

Answer:

39.473%

Step-by-step explanation:

It is actually fairly simple to get the answer to this. What you can do to find any percentage, is to take the amount done, or whatever it is in the scenario, and divide it by the total. It is like turning it into a fraction, which you can do as well. Turn this into a fraction, and then convert it. 15/38, 15 divided by 38 = 39.473.

Hope this helped ^-^

4 0
3 years ago
Read 2 more answers
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