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3 years ago

Plz only answer if u know the correct answer and get points

Mathematics

2 answers:

dangina [55]3 years ago

5 0

Answer:

Step-by-step explanation:

Lynna [10]3 years ago

5 0

To calculate the volume of a cuboid (the shape shown) you need 3 values:

Width, length and height.

As we already have the width and length, we need the height and we can determine the height from the picture of the shape that is shown. In this case the height would be either RU or ST. We look at the possible answers to see if any of the possible answers match our possible solutions - in this case ST.

Therefore the answer would be a) ST

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Help please!! first answer gets marked brainliest!

algol [13]

Answer:

Answer 30

Step-by-step explanation:

if you need to solve or see step- by step explanation here's a link https://mathsolver.microsoft.com/en/solve-problem/%60sqrt%7B%2050%20%20%7D%20%20%20%60times%20%203%20%60sqrt%7B%202%20%20%7D

3 0

2 years ago

Kristie has taken five tests in science class. The average of all five of Kristie's test scores is 94. The average of her last t

Bingel [31]

Answer: The average of the first two test scores is 97.

Step-by-step explanation: Given that Kristie has taken five tests in science class. The average of all five of Kristie's test scores is 94 and the average of her last three test scores is 92.

We are to find the average score of her first two tests.

Let a1, a2, a3, a4 and a5 be teh scores of Kristle in first , second, third, fourth and fifth tests respectively.

Then, according to the given information, we have

$\dfrac{a1+a2+a3+a4+a5}{5}=94\\\\\Rightarrow a1+a2+a3+a4+a5=94\times5\\\\\Rightarrow a1+a2+a3+a4+a5=470~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

and

$\dfrac{a3+a4+a5}{3}=92\\\\\Rightarrow a3+a4+a5=92\times3\\\\\Rightarrow a3+a4+a5=276~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)$

Subtracting equation (ii) from equation (i), we get

$(a1+a2+a3+a4+a5)-(a3+a4+a5)=470-276\\\\\Rightarrow a1+a2=194\\\\\Rightarrow \dfrac{a1+a2}{2}=\dfrac{194}{2}\\\\\Rightarrow \dfrac{a1+a2}{2}=97.$

Thus, the average of the first two test scores is 97.

6 0

3 years ago

What is sn for the arithmetic series with a1=3 an=-38 and n=8?

otez555 [7]

Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140

4 0

3 years ago

Please answer correctly !!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!

Ugo [173]

Answer:

Step 3 they took the square root incorrectly

Step-by-step explanation:

5 ( x-2)^2 +6 = 86

Subtract 6 from each side

5 ( x-2)^2 +6 -6= 86-6

5 ( x-2)^2 = 80

Divide each side by 5

5 ( x-2)^2 /5 = 80/5

(x-2)^2 = 16

Take the square root of each side

sqrt((x-2)^2) = ±sqrt(16)

x-2 = ±4

4 0

2 years ago

Solve for t. You must write your answer in fully simplified form.<br> -19 = 7t

a_sh-v [17]

Answer:

-2.71

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Plz only answer if u know the correct answer and get points ​

Plz only answer if u know the correct answer and get points