MATHEMATICS MIDDLE SCHOOL

What's -8(2)-[3(-5)-(-1)+4(2-6)]+4(-7)

Answers

Answer 1
Answer:

Answer:

-14

Step-by-step explanation:

-8(2)-[3(-5)-(-1)+4(2-6)]+4(-7)

opening the brackets

-8(2)-[-15+1+4(-4)]+4(-7)

-8(2)-[-15+1+4(-4)]+(-28)

-8(2)-[-15+1+(-16)]-28

-16-[-15+1+-16]-28

-16-[-15-16+1]-28

-16-[-31+1]-28

-16-[-30]-28

-16+30-28

-16-28+30

-44+30

-14

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What is the percent increase on 438,000 from 561,000

Answers

So, first you have to put the amount of decrease/increase over the original amount. (like a fraction!) then you are trying to find the percent so you would do x over 100. so it would look like; 438,000       x
                                                   -----------  =  -----
                                                    561,000     100
Then you would cross multiply (438,000 times 100 and 561,000 times x [which would be x])  and it would look like;  43,800,000 = 561,000x

(a shortcut for 0's is that if theres the same amount of them on each side just cross them out! It gives you the same amount every time!)

43,800=561x      and finally you would divide 43,800 by 561 and your answer is 78.07%
Hope I helped! :)
(561000-438000)/438000 x 100%
=123000/438000 x 100%
=28,08 %

What is the slope of the line that contains the points (4,8) and (9,8)? What type of line is it? A. The line has no slope; it's a vertical line.
B. Slope = 0; horizontal line
C. The line has no slope; it's a horizontal line.
D. Slope = 0; vertical line

Answers

I believe the answer is B

The ratio of bananas to peaches in a fruit basket is 4 to 1. If there are 4 peaches in the fruit basket then how many bananas and peaches are there altogether?

Answers

if for every 4 bananas there is 1 peach, and there are 4 peaches in the fruit basket, then that means there are 16 bananas in the fruit basket and 16+4=20 so your answer is 20!
20 is your answer. 4 peaches 16 bananas

What is the product (2x - 9)(3x + 5)?​

Answers

Answer:

6x² - 17x - 45

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor

(2x - 9)(3x + 5)

= 2x(3x + 5) - 9(3x + 5) ← distribute both parenthesis

= 6x² + 10x - 27x - 45 ← collect like terms

= 6x² - 17x - 45

How are the expression 7-g and g-7 different?

Answers

in the first equation the 7 is first and in the second the g is first
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Someone who is smart in math help me!!

Answers

C is the circumcenter of the triangle

So PC =RC = QC

Plug in

3x + 7 = 5x - 15

-2x = - 22

  x = 11
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