MATHEMATICS MIDDLE SCHOOL

Please do 13 ive been trying for 3 hour pls solve x

Answers

Answer 1

Answer:

Answer:

x = 3

Step-by-step explanation:

We should know that:

A straight segment joining the middle of two sides in a triangle is parallel to the third side and equal to half of it.

So,

3x + 1 = (1/2) * 20 = 10

3x = 10 - 1 = 9

x = 9/3 = 3

So, the value of x = 3

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What multiplies to be -144 and adds to be 7

Answers

1. multiply to -18 add to -17 = Multiplying -18 and 1 will give -18 as the result and then on adding -18 and + 1 the result comes to -17
2. multiply to 36 add to -13 = Multiplying -9 and -4 will give -36 as the result and then on adding -9 and -4 the result comes to -13
3. multiply to -24 add to -5= Multiplying -8 and +3 will give -24 as the result and then on adding -8 and +3 the result comes to -5
4. multiply to -18 add to 7= Multiplying +9 and -2 will give -18 as the result and then on adding +9 and -2 the result comes to 7
5. multiply to -36 add to 9= Multiplying +12 and -3 will give -36 as the result and then on adding +12 and -3 the result comes to 9
6. multiply to 24 add to 10= Multiplying +6 and +4 will give 24 as the result and then on adding +6 and +4 the result comes to 10
7. multiply to 18 add to -9= Multiplying -6 and -3 will give -18 as the result and then on adding -6 and -3 the result comes to -9
8. multiply to -36 add to -16= Multiplying -18 and +2 will give -36 as the result and then on adding -18 and +2 the result comes to -16

PLZ HELP ME and tell me how to get to my answer. What is the mean absolute deviation for the data? 30, 35, 35, 40, 55

A.
5

B.
6.4

C.
6.8

D.
25

Answers

A. 5 because first you find the mean and then add the differences from the mean of the other numbers and divide by the number of numbers and get 5.

A health insurance payment of $34.55 was deducted from ms. Donaldson's earnings for the week. After the insurance deduction, payroll taxes equal to 28% of the balance were deducted. What was the amount that Ms. Donaldson received?

Answers

I think that this quesion is missing some background, that is that Ms. Donaldson earned 907.10

So the 34.55 were deduced from this number, and the remaining amount was:

907.10-34.55=872.65

After this, further 28% were deduced, which means that 100-28=72% were left.

And this is:72%*872.55= 628.236 (which we round to 628.24!)

Answer: the answer would be 628.24!

Step-by-step explanation:

took the test

It takes 21 minutes for 5 people to paint 7 walls. how many minutes does it take 3 people to paint 5 walls. Please help.

Answers

It would take 15 minutes.
21/7=3
5/3=1.666666666667
1.6666666667*3=approx. 5
5*3=15
Hope it hepls :)

It would take 15 minutes.
21/7=3
5/3=1.666666666667
1.6666666667*3= 5
5*3=15

So if you do 21 divied by 7 that equals 3. then you do 5 divied by 3=1.666666666667 you divide the 3 bc that's the answer you got for 21/7. then you do 1.666666666667 x3. bc you had that answer for the last problem. then you just have 2 multiply 5x3 and that equals 15.

To find the percent for 16 does it increase or decrease?

Answers

16=16%so, it increases because decreasing mean you are going down.
Hope it helps!

In how many ways can 5 cards be arranged side-by-side on a table

Answers

when you have this kind of math problem you can use multiplication.

you multiply the number of things you have and every number lower than it together.

for this one you would do

5*4*3*2*1=120

there are 120 different ways 5 cards can be arranged on a table

1 times 2 times 3 times 4 times 5 = 120

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Can someone please help me with #10. i need the one with solution. thanks!