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3 years ago

Please help!!!!!!!!!

Mathematics

1 answer:

vichka [17]3 years ago

3 0

Answer:

Step-by-step explanation:

I used a graph to figure this out, so I just know it's correct.

a=1 b=-6 c=8 when added together because the b=NEGATIVE 6, this all =3

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Which can be the first step in finding the equation of the line that passes through the points (5,-4) and (-1,8) in slope-interc

Mars2501 [29]

Hello : let A(5,-4) B(-1,8)
the slope is : (YB - YA)/(XB -XA)
(8+4)/(-1-5) =-2
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y = -2x +b

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4 years ago

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WILL MARK BRAINLIEST! Shelly served the volleyball over the net 17 out of 25 times. What is her percentage of serving the ball o

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Answer

68℅

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3 years ago

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if the corresponding sides of 2 quadrilaterals are propotional, then the 2 quadrilaterals must be similar

den301095 [7]

Answer:

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Step-by-step explanation:

A square and a parallelogram could have proportional sides but the angles would not be the same

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3 years ago

Estimate a 25% tip on a bill of $61.77 by first rounding the bill amount to the nearest ten dollars

Nonamiya [84]

Answer:

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Step-by-step explanation:

8 0

2 years ago

A shoe manufacturer was investigating the weights of men's soccer cleats. He felt that the weight of these cleats was less than

aleksklad [387]

Answer:

The conclusion is that the researcher was correct

Step-by-step explanation:

From the question we are told that

The sample size is $n = 13$

The sample mean is $\= x = 9.63$

The standard deviation is $s = 0.585$

The significance level is $\alpha = 0.05$

The Null Hypothesis is $H_o : \mu = 0$

The Alternative Hypothesis is $H_a = \mu < 10$

The test statistic is mathematically represented as

$t = \frac{\= x - \mu }{\frac{s}{\sqrt{n} } }$

Substituting values

$t = \frac{9.63 - 10 }{\frac{0.585}{\sqrt{13} } }$

$t = - 2.280$

Now the critical value for $\alpha$ is

$t_{\alpha } = 1.645$

This obtained from the critical value table

So comparing the critical value of alpha and the test value we see that the test value is less than the critical value so the Null Hypothesis is rejected

The conclusion is that the researcher was correct

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4 years ago