MATHEMATICS MIDDLE SCHOOL

Evaluate.2.3+3.7-2
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27.5-4*5.625

My guess, via using a calculator:
4
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132

Answers

Answer 1

Answer:

2.3+3.7-2 = 4

27.5 - 4*5.625

= 27.5 - ( 4*5.625)

= 27.5 - 22.5

= 5

I hope that's help !

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the bbookstore has 60 womrns magazines and 20 other magazin. what percentage of the magazines at the bookstore are womans magazines

Answers

Hi,

Equation for this problem;

$((60 + 20) / 100) * 60 \n (80 / 100) * 60 \n 0.8 * 60 = 48$

Answer: 48%

Hope this helps.
r3t40

Please help thank you guys

Answers

Basically: Whenever you have a number times a variable, you don't have to write the multiplication sign.

5 × n is the same thing as 5n.

Let's write each of these out.
a) 5 + 2 + x
b) 5 + 2x
c) 5 + x + x
d) 5 + x² (the ² means multiply by itself)
e) 5 + 2x (sum = adding together)
f) 5 × 2x (product = multiplying together)

As you can see, only B and E fit the expression given.

5 times 7/8 then converted to simplest form?

Answers

5*7/8 = 4 3/8
5/1 * 7/8 = 35/8
convert into mixed number because numerator is bigger than the denominator so it it
4 3/8

Math Answers .if you take a test with 1 0questions and got 7 of them right,what decimal part would that be? what decimal part did you get wrong?? explain

Answers

right decimal percentage: If i take a test with 10 question and i got 7 of then right the decimal would be 0.7 in percent it would be 70%. That i your answer. (this is how much you got right.)

wrong decimal percentage: the wrong decimal percentage would be 0.3 because divide 7 by 10 and you get 0.7 and out of 10 would be 0.3, there is your answer.

I got .7 or .70 correct. Because 7/10=.70. I got .3 or .30 wrong because .70 is 70 out of 100. 100-70=30

Help please because I need help and its confusing

Answers

First sort the number form least to greatest

24,26,27,28,30,30,33,36

To find the mean, we divide to sum of all numbers in the data set by the number of numbers given,'8'.

(24+26+27+28+30+30+33+36)/8=234/8=29.25

Mean=29.25

To find the inter quartile range, we must solve for the lower and upper quartile mean.

Lower Quartile=(24+26+27+28)/4=26.25
Upper Quartile=(30+30+33+36)/4=32.25

32.25=26.25=6

Interquartile range=6

The median is the middle number in the data set, or the sum of the two middle numbers if there isn't a sole middle number

24,26,27,28,30,30,33,36

Median=(28+30)/2=29

Median=29

1st quartile we already solved for...
Lower/1st Quartile=(24+26+27+28)/4=26.25

3rd quartile we already solved for....
Upper/3rd Quartile=(30+30+33+36)/4=32.25

The mean would be most effected by an outlier of 52, the median would only go from 29 to 30.

Select all the expressions that are equal to the product of 8 and 10

Answers

Is there a pic provided

Final answer:

Expressions that result in 80, such as 70+10, 100-20, or 16x5, are equal to the product of 8 and 10. The operation within the expression can vary as long as the result is 80.

Explanation:

The product of 8 and 10 is 80. Therefore, any expression that results in 80 is equal to the product of 8 and 10. For example, expressions like 70+10, 100-20, 16x5 are equal to the product of 8 and 10 as they all equal 80.

Notice that the operations within the expressions can vary. You could have addition, subtraction, multiplication, or even a combination of these operations as long as the result is 80, it is an equivalent expression to the product of 8 and 10.