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iren2701 [21]
3 years ago
14

What type of triangle is formed by joining the points D(7, 3), E(8, 1), and

Mathematics
2 answers:
Naily [24]3 years ago
5 0

Answer:

A

Step-by-step explanation:

the answer is A

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cmiiw

soldi70 [24.7K]3 years ago
4 0

Answer:

C

Step-by-step explanation:

You might be interested in
At the local candy store, Harper bought 4 ounces of jelly beans for $15.96. At that rate, how much would she pay for 7 ounces of
s2008m [1.1K]

Answer:

$27.93

Step-by-step explanation:

First we divided 4 from 15.96 and got 3.99, so now we know that $3.99 is how much each ounce of jellybeans costs so now we multiply 3.99 times 7 to get our answer of 27.93.

3 0
3 years ago
An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 37 type K batteries and a sample of 58
Olegator [25]

Answer:

Hypothesis Test states that we will accept null hypothesis.

Step-by-step explanation:

We are given that an engineer is comparing voltages for two types of batteries (K and Q).

where, \mu_1 = true mean voltage for type K batteries.

           \mu_2 = true mean voltage for type Q batteries.

So, Null Hypothesis, H_0 :  \mu_1 = \mu_2 {mean voltage for these two types of

                                                        batteries is same}

Alternate Hypothesis, H_1 : \mu_1 \neq \mu_2 {mean voltage for these two types of

                                                          batteries is different]

<em>The test statistics we use here will be :</em>

                     \frac{(X_1bar-X_2bar) - (\mu_1 - \mu_2) }{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}  } }  follows t_n__1 + n_2  -2

where, X_1bar = 8.54         and     X_2bar = 8.69

                s_1  = 0.225       and         s_2     =  0.725

               n_1   =  37           and         n_2     =  58

               s_p = \sqrt{\frac{(n_1-1)s_1^{2}+(n_2-1)s_2^{2}  }{n_1+n_2-2} } =   \sqrt{\frac{(37-1)0.225^{2}+(58-1)0.725^{2}  }{37+58-2} }  =  0.585               Here, we use t test statistics because we know nothing about population standard deviations.

     Test statistics =  \frac{(8.54-8.69) - 0 }{0.585\sqrt{\frac{1}{37}+\frac{1}{58}  } } follows t_9_3

                             = -1.219

<em>At 0.1 or 10% level of significance t table gives a critical value between (-1.671,-1.658) to (1.671,1.658) at 93 degree of freedom. Since our test statistics is more than the critical table value of t as -1.219 > (-1.671,-1.658) so we have insufficient evidence to reject null hypothesis.</em>

Therefore, we conclude that mean voltage for these two types of batteries is same.

6 0
3 years ago
Of the 180 students at Martin Middle School, of the students take French. Of that group, also chose to join the French club.
Cerrena [4.2K]

Answer: is going to be 36 because all you have to do is multiply something that it multiplyed by 5 to get 180 and you'll get your answer

Step-by-step explanation:


5 0
3 years ago
Ethan says that the value of 40.7 is 10 times the value of 4.07 is be correct?
VLD [36.1K]

Answer:

He is correct

Step-by-step explanation:

multiplication and division are inverse operations so lets divide to see if he is correct

40.7/10=4.07

he is correct

8 0
3 years ago
7. Solve for b.<br> b<br> 26°
Genrish500 [490]

Answer:

64°

Step-by-step explanation:

We know that a right angle is 90°

so we do 90° - 26° = 64°

6 0
2 years ago
Read 2 more answers
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