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Elodia [21]
2 years ago
11

Increasing intervals of function

Mathematics
1 answer:
VMariaS [17]2 years ago
3 0
Icreasing intervals of function
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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

8 0
3 years ago
Please help me with this
dem82 [27]

Answer:

I believe it is 49.425

Step-by-step explanation:

You just add all the numbers then divide it by how many numbers there are.

5 0
3 years ago
Read 2 more answers
Please help me with this problem i need this now
Bad White [126]

Answer:

$2,975

Step-by-step explanation:

Discount = Original Price x Discount %/100

Discount = 3500 × 15/100

Discount = 3500 x 0.15

You save = $525.00

Final Price = Original Price - Discount

Final Price = 3500 - 525

Final Price = $2,975.00

4 0
2 years ago
Select the correct answer.
Varvara68 [4.7K]

Answer:

OB.

Step-by-step explanation:

you first find the common denominator of the two fractions. then u start dividing each denominator into the common denominator u chose and multiplying the answer with the numerator

8 0
3 years ago
How do you divide fractions?
balandron [24]
Keep change flip. You keep the first fraction the same, change the sign to multiplication and flip the second fraction. Example: 3/4 divided by 1/2 would be worked as 3/4 times 2/1
3 0
3 years ago
Read 2 more answers
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