3 years ago

I need help!!!!!!!!!

Mathematics

1 answer:

max2010maxim [7]3 years ago

6 0

Answer:

1st option...............

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Find the volume of the 3D figure. Round to 3 decimal places.

ioda

Answer:

V≈33.51

Step-by-step explanation:

V=πr^2 ( h/3)

v=π·2^2 (8/3)

v≈33.51032

3 0

3 years ago

2) If the perimeter of the following triangle is 27 cm:<br> 3x + 3<br> 2x + 5<br> x + 7

klemol [59]

Answer:

x= 8 (3x + 3)

Step-by-step explanation:

3 x 8 = 24

24+3= 27

Hope this helped!! :)

4 0

4 years ago

Help asap please!! <3

photoshop1234 [79]

1. 10 %

2. 15%

3. 10 % to 15%

4. 10 %

5. 10%

7 0

3 years ago

Read 2 more answers

What are supplementary lines I’m sooooo confused

pogonyaev

Answer:

Supplementary lines are 180 and are two angles that can add up to 180 degrees make a staraight angle

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

a study of the effects of exercis used rats bred to have high or low capacity for exercise. The 8 high capacity rats had mean bl

zavuch27 [327]

Answer:

$t=-2.86$

Step-by-step explanation:

From the question we are told that:

Sample 1 $n_1=8$

Sample 1 mean blood pressure $\=x_1=89mmHg$

Sample 1 variance $\sigma_1=81$

Sample 2 $n_2=8$

Sample 2 mean blood pressure $\=x_2=105mmHg$

Sample 2 variance $\sigma_2=169$

Generally the equation for the test of statistic is mathematically given by

$t=\frac{\=x_1-\=x_2}{\sqrt{\frac{\sigma_2}{n_1}+\frac{\sigma_2}{n_2} } }$

$t=\frac{89-105}{\sqrt{\frac{81}{8}+\frac{169}{8} } }$

$t=-2.86$

therefore the samples test for comparing the two population means

$t=-2.86$

3 0

3 years ago