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3 years ago

How to find the ratio of two triangles

2 answers:

6 0

Reduced ratio of any two corresponding sides is called the scale factor of the similar triangles.

storchak [24]3 years ago

3 0

So its called a scale factor so you would have to reduce the ratio of the corresponding triangles
i hoped this helped

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M is the midpoint of segment AB. Given A(-9, 4) and B(3,-2), find the coordinates of M.

raketka [301]

Answer:

-6,2

Step-by-step explanation:

5 0

4 years ago

Joeli has 10 quarters. She wants to buy postcards to mail to her friends. Each postcard costs 2 quarters. How many postcards can

Arada [10]

5 post cards because its 10 divided by 2

3 0

3 years ago

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Write a rule for the linear function shown in the graph.

fredd [130]

Y=-x+4
The graph is firstly going down from left to right ( negative gradient) and it intercepts the y axis at 4 so it’s +4.
y=mx + c is the equation for a straight line

5 0

3 years ago

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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha

BartSMP [9]

Answer:

The decision rule is

Reject the null hypothesis

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 5.6 \ pounds/inch^2$

The sample size is n = 160

The sample mean is $\= x = 5.7 \ pounds/ inch^2$

The variance is $\sigma ^2 = 0.25$

The level of significance is $\alpha = 0.01$

The null hypothesis is $H_o : \mu = 5.6$

The alternative hypothesis is $H_a : \mu > 5.6$

Generally the standard deviation is mathematically represented as

$\sigma = \sqrt{\sigma ^2 }$

=> $\sigma = \sqrt{0.25 }$

=> $\sigma = 0.5$

Generally the test statistics is mathematically represented as

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

=> $z = \frac{5.7 - 5.6 }{ \frac{0.5 }{\sqrt{ 160 } } }$

=> $z = 2.53$

From the z table the area under the normal curve to the left corresponding to 2.53 is

$p-value = P(Z > 2.53 ) =0.0057$

From the value obtained we see that the $p-value < \alpha$ hence

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to conclude that the believe that the valve performs above the specifications is true

5 0

3 years ago

SOMEONE PLEASE HELP ME

TEA [102]

The correct answer is y=-4, y=1

3 0

4 years ago

Read 2 more answers