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allochka39001 [22]
3 years ago
13

2.3 times 4.7 how to do it show anwser

Mathematics
1 answer:
Keith_Richards [23]3 years ago
3 0

Answer:

10.81

Step-by-step explanation:

See the picture to help u

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John took all his money from his savings account. He spent ​$110 on a radio and 4/11 of what was left on presents for his friend
svp [43]

Answer:

$1210

Step-by-step explanation:

Let x be total amount

First John spent $110 on a radio and 4/11 of what was left on presents for his friends so he was left with

\frac{7}{11}(x-110)=\frac{7}{11}x-70

Then he put 2/5 of his remaining money into a checking account

\frac{3}{5}\left(\frac{7}{11}x-70\right)

Rest he donated to charity

420=\frac{3}{5}\left(\frac{7}{11}x-70\right)\\\Rightarrow \left(\frac{7}{11}x-70\right)=\frac{2100}{3}\\\Rightarrow \frac{7}{11}x-70=700\\\Rightarrow \frac{7}{11}x=770\\\Rightarrow x=1210

Hence total amount of money John originally had was $1210

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3 years ago
Whats a prime number
bezimeni [28]

A Prime Number can be divided evenly only by 1, or itself. 
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6 0
3 years ago
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The mirror image of the point (2, 5) in the x – axis is?
Alekssandra [29.7K]

Answer:

(2,-5)

Step-by-step explanation:

Reflecting (2,5) across x-axis will invert it's y-coordinate and will make it negative.

4 0
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There are 450 student at a school if each classroom codes 30 students How many classrooms are Needed at the school
Darina [25.2K]

Answer:

15 rooms are needed at the school

Step-by-step explanation:

Solve:

Divide 450 (the number of students) by 30 (the number of students per classroom)

450/30= 15

Check your work:

30*15= 450

Hope this helps!

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