MATHEMATICS MIDDLE SCHOOL

What is the answer to this equation:

23 x a = 10189
What is a?

Answers

Answer 1
Answer: to find A u divide 10189 by 23 which is 443 but to check ur work multiply 443 by 23 which is 10189
Answer 2
Answer: You can divied 10189➗23 and it is 443.The you multiply 443✖️23 it will give you ........ 10189!!!

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How much does cell phone weigh

Answers

In 2005 he average weight is 4 ounces, they have gotten bigger since, clearly, but that is the average weight. 
Does this answer your question?

well it depends what kind of phone you have

Katrina saved $200 to purchase your tablet her father spent ten times as much money to buy his new computer how much did her father's computer cost

Answers

I believe it would be $2,000. $200 x 10 

When measuring distance 12 beads are approximately equal to 6 erasers. how many erasers are equal to 18 beads? How many beads are equal to 42 erasers?

Answers

Well, since 12 divided by 6 would equal 2. So 9 erasers would equal to 18 beads (18 ÷ 2). 21 beads equal 42 erasers. 

If a+b>a−b, which of the following must be true?(A) a>b (B) a=b (C) a> 0 (E) b > 0

Answers

Answer:

(E) b > 0

Step-by-step explanation:

a+b > a-b

Subtracting a on both sides,

a+b-a > a-b-a

b > -b

Adding b on both sides,

b+b > b-b

2b > 0

b > 0

Answer:

e. b>0

Step-by-step explanation:

I need answers a b c and d

Answers

Part b)

3 and 2/5 + 1 and 1/8

Turn into improper fractions:
= 17/5 + 9/8

Find common denominator:
= 136/ 40 + 45/40

Answer it:
= 181/40

Simplify:
= 4 and 21/40

For part c and d, i'll just give the answers:

Part c)
= 9/20

Part d)
= 17/12
or = 1 and 5/12

The answers are in bold :)
(btw if you spot a mistake, sorry in advance)

Percents1.

Martha estimated there were 95 marbles in a jar for a contest. The actual number of marbles in the jar was 117. What was the percent error of Martha's estimation?

22%
81.20%
23.16%
18.80%

Answers

It is 18.80%. You use the percent error formula: %error= (true value-estimated value)/true value. So (117-95)/117 = .188034188. You multiply by 100 since you are finding the percent not the decimal and you get about 18.80%
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