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3 years ago

Wuts the solution too this problem... 6a+7=13+7a

Mathematics

2 answers:

Lera25 [3.4K]3 years ago

5 0

Answer:

a=-6

Step-by-step explanation:

6a+7=13+7a

subtract 7 from both sides

6a=13+7a-7

subtract 7a from both sides

6a-7a=13-7

add like terms

-a=6

divide by -1

a=-6

Mila [183]3 years ago

3 0

Answer:

a= -6

Step-by-step explanation:

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42 is 8% of what number

Setler [38]

8%=0.08
42÷0.08=525
So your answer is 525

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3 years ago

Read 2 more answers

What is the standard deviation of the following data set rounded to the nearest tenth? 56 ,78 ,123 , 34, 67, 91, 20

quester [9]

Answer:

The standard deviation of the following data set is 32.2

Step-by-step explanation:

step 1

Find the mean

we have

$[56,78,123,34,67,9,20]$

Sum the data and divided by the number of elements

$[56+78+123+34+67+91+20]/7=469/7=67$

step 2

For each number: subtract the Mean and square the result

$[(56-67)^{2},(78-67)^{2},(123-67)^{2},(34-67)^{2},(67-67)^{2},(91-67)^{2},(20-67)^{2}]$

$[121,121,3,136,1,089,0,576,2,209]$

step 3

Work out the mean of those squared differences

$[121+121+3,136+1,089+0+576+2,209]/7=1,036$

This value is called the "Variance"

step 4

Take the square root of the variance

$standard\ deviation=\sqrt{1,036}=32.2$

6 0

3 years ago

John states that the product of two real numbers is a real number. Extending this to imaginary numbers John states that the prod

Wewaii [24]

___________________________________________________________

Answer:

no. i*i = -1

2i*3i=-6

now if they meant complex numbers the answer is still no

(2+4i)(2-4i) = 4-8i+8i-16 = -12

___________________________________________________________

7 0

3 years ago

Any one have ideas of how to do this... haha I am so lost

Anastasy [175]

How the heck r we supposed to solve that if it says “evaluate 5!”

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Solve for h<br> -6 < -2h + 14

Sholpan [36]

Answer:

h<10

Step-by-step explanation:

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