2 years ago

I need to know the answer for my test pls help

Mathematics

2 answers:

EleoNora [17]2 years ago

7 0

Answer:

That is an existing variable such that it means the weight room has an existing are of 480 ft^2

DochEvi [55]2 years ago

5 0

3= -1 + 7y x 10 to the second power

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Ab - bc+ ac, bc - ca+ ab, ca - ab-2bc

BabaBlast [244]

Answer:

$ab-2bc+ca$

Step-by-step explanation:

Complete question is given below

Add:-

ab-bc+ac,bc-ca+ab,ca-ab-2bc

We have to find the result after addition

Now, adding all expression

We get

$ab-bc+ac+bc-ca+ab+ca-ab-2bc$

Combine like terms then, we get

$(ab+ab-ab)+(bc-bc-2bc)+(ac-ca+ca)$

$ab-2bc+ca$

Hence, $ab-bc+ac+bc-ca+ab+ca-ab-2bc=ab-2bc+ca$

3 0

2 years ago

HELPPPPPPP PLEASEEEEE

egoroff_w [7]

Answer:

5^15

Step-by-step explanation:

if they have the same base then you add the two top vaules therfore giving you c.

Brainliest plzzzzzzz

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2 years ago

Find the square of the sum of 7 and 6.

Masteriza [31]

Answer:

169

Step-by-step explanation:

7 + 6 = 13

13² = 169

hope this helps

6 0

2 years ago

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How to use the results of part (b) and appropriate computation formulas to compute the sample variances s2 and sample standard d

anygoal [31]

$s^2=\displaystyle\sum\frac{(x-\bar x)^2}{n-1}=\frac1{n-1}\sum(x^2-2x\bar x+{\bar x}^2)=\frac{\displaystyle\sum x^2-2\bar x\sum x+{\bar x}^2}{n-1}$

where $\bar x=22$ is the mean. Since

$\sum x^2=2568$
$\sum x=110$

you have variance

$s^2=\dfrac{2568-2(22)(110)+22^2}{5-1}=37$

and so the standard deiviation is

$s=\sqrt{37}\approx6.083$

7 0

3 years ago

The sum of thrice a number and 5 is 17.

Gnoma [55]

Answer:

The number is 4

Step-by-step explanation:

17 - 5 = 12

12 ÷ 3 = 4

5 0

2 years ago

Read 2 more answers