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erastova [34]
3 years ago
5

3x-y=-55x+7y=29Solve this for me using substitution pls

Mathematics
1 answer:
pentagon [3]3 years ago
3 0

Answer:

(- 3/13, 56/13)

Step-by-step explanation:

See steps below:)

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Cade gets his phone bill and finds out that he is charged a 20 dollar flat rate and then must also pay .05 cents per minute. Wri
Klio2033 [76]

Answer:

1100 minutes

Step-by-step explanation:

Equation: 35=.05x-20

Why? x is the amount of minutes on his phone. Each minute is 0.05 hence 0.05x. Subtract 20 because that is the flat rate

55=.05x

x=1100

Therefore he was on his phone for 1100 minutes

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3 years ago
Recall that rational numbers are numbers that can be represented as the ratio, or fraction, of two integers. When expressed as d
fredd [130]

Answer:

Repeating

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Step-by-step explanation:

5 2/7 as improper fraction is 37/7 and it equals 5.28571428571 which makes it repeating because the numbers don't stop.

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3/22 is equal to 0.13636363636 it is repeating because the numbers never stop.

3 0
10 months ago
You bought concert tickets that cost
OlgaM077 [116]

Single ready to mingle

Step-by-step explanation:

7 0
2 years ago
Help i need to get my grades up or ill get kicked out
Salsk061 [2.6K]

Answer:

dang thats tough

Step-by-step explanation:

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3 years ago
Ralph invested in a mutual fund and at the end of 20 years he has $14,300 in his account. If the mutual fund returned an average
Semenov [28]

Answer:

\$5,500

Step-by-step explanation:

we know that

The simple interest formula is equal to

A=P(1+rt)

where

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r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=20\ years\\ P=?\\ A=\$14,300\\r=8\%=8/100=0.08

substitute in the formula above

14,300=P(1+0.08*20)

14,300=P(2.6)

P=14,300/(2.6)

P=\$5,500

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2 years ago
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