MATHEMATICS HIGH SCHOOL

The addition property of equality lets you say that if 2x-5=10 then 2x =____15
5
7.5
20

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

2x-5=10?

So if you put in 7.5 instead of X, the sum will be 15

So 15-5=10.

In this case 15 will be the answer.

Answer 2

Answer: 15 because 10+5=15
when one number moves from left side to right side or right side to left side, signs changes;
that mean plus becomes minus and minus becomes plus

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What is the slope of the line that passes through the points (-1,-10) and (-1,-2)? Write your answer in simplest form.

Answers

Answer: undefined

Step-by-step explanation:

How do you solve 5[2p−4(p+5)]=25 properly?

Answers

Answer:

Step-by-step explanation:

5[2p-4(p+5)]=25

or, 2p-4(p+5)=5

or, 2p-4p-20=5

or, -2p=5+20

or, -2p=25

or, 2p=-25

or, p=25/2

so, p=12.5

Please, solve this exercice:1+2+2²+2³+2⁴+....+ 2²⁰¹¹

It can be solved by using geometric progression?

Answers

$1+2+2^2+2^3+2^4+...+2^(2011)\n\na_1=1;\ a_2=1\cdot2=2;\ a_3=2\cdot2=2^2;\ a_4=2^2\cdot2=2^3\n\vdots\na_(2012)=2^(2010)\cdot2=2^(2011)$

$The\ sum\ of\ a\ terms\ of\ geometric\ progression:S_n=(a_1(1-r^n))/(1-r)\n\na_1=1;\ r=2\n\nsubtitute:\n\nS_(2012)=(1(1-2^(2012)))/(1-2)=(1-2^(2012))/(-1)=2^(2012)-1\n\nOnly\ that...(606\ digits,\ if\ you\ want\ how\ length\ this\ number)$

the perimeter of a basketball court is 102 meters, and length is 6 meters longer than twice the width, what r length and width. what is width _m.

Answers

Perimeter = 2(l + w)

Thus,

102 = 2(l + w)

l = 6 + 2w

102 = 2( 6 + 2w + w)
102 = 12 + 4w +2 w
102 = 12 + 6w
90 = 6w

Thus, w = 15.

Length = 6 + 2w
= 6 + 30
= 36.

Thus, the length is 36 meters and width is 15 meters.

What Is 17/4 [fraction] as a mixed or a whole number please answer

Answers

so lets see the biggest counting number that has a factor of four, yet is less than 17 so
16 is divisible by 4 and less than 17 so
16/4 +1/4=17/4
16/4=4 so
4 and 1/4
1/4=.25 so
4.25

So, (as apologiabiology's brother)

We find out how many whole 4's would fit in 17. We get 4 4's with a remainder of 1.

So, 17/4 = 4 1/4 (four and one-fourth)

P.S. 17/4 cannot be written as a whole number without fractions.

Solve the following system:y = x + 3
2x + y = 9

(2, 5)
(5, 2)
(−2, 5)
(2, −5)