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Serhud [2]
3 years ago
6

Recall that two angles are complementary if the sum of their measures is​ 90°. Find the measures of two complementary angles if

one angle is twenty dash nine times the other angle.
Mathematics
1 answer:
boyakko [2]3 years ago
6 0

Answer:

Therefore,

The measures of two complementary angles are 3° and 87°.

Step-by-step explanation:

Given:

Let one angle measure of a Complementary angles be "x".

Then according to the given condition:

Measure of other angle will be 29 times "x" , let y = 29x.

To Find:

The measures of two complementary angles = ?

Solution:

Complementary Angles:

Two angles are Complementary when they add up to 90 degrees.

Example 40° and 50° are Complementary Angles.

If 'x' and 'y' are Complementary Angles the we have

x+y=90\°

Substituting the values we get

x+29x=90\\30x=90\\\\x=\dfrac{90}{30}=3

Substituting x in y we get

y = 29x = 29\times 3=87\°

Therefore,

The measures of two complementary angles are 3° and 87°.

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Gibbs Baby Food Company wishes to compare the weight gain of infants using its brand versus its competitor’s. A sample of 40 bab
Leviafan [203]

Answer:

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The p value can be founded with this formula:

p_v =P(z  

Since the p value is higher than the significance level provided of 0.05 we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean for the Gibbs brand is significantly lower than the true mean for the competitor

Step-by-step explanation:

Information given

\bar X_{1}=7.6 represent the mean for Gibbs products

\bar X_{2}=8.1 represent the mean for the competitor

\sigma_{1}=2.3 represent the population standard deviation for Gibbs

\sigma_{2}=2.9 represent the sample standard deviation for the competitor

n_{1}=40 sample size for the group Gibbs

n_{2}=55 sample size for the group competitor

\alpha=0.05 Significance level provided

z would represent the statistic

Hypothesis to verify

We want to check if babies using the Gibbs brand gained less weight, the system of hypothesis would be:  

Null hypothesis:\mu_{1}-\mu_{2}=0  

Alternative hypothesis:\mu_{1} - \mu_{2}< 0  

The statistic would be given by:

z=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}} (1)  

Replacing the info given we got:

z=\frac{(7.6-8.1)-0}{\sqrt{\frac{2.3^2}{40}+\frac{2.9^2}{55}}}}=-0.936  

The p value can be founded with this formula:

p_v =P(z  

Since the p value is higher than the significance level provided of 0.05 we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean for the Gibbs brand is significantly lower than the true mean for the competitor

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Lonna gave away 13/8 pie to her neighbor. Each pie was cut into 8 pieces. How many pieces of pie did lonna give to her neighbor
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Answer:

13 pieces

Step-by-step explanation:

We are given that each pie was cut into 8 pieces .

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