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Paul [167]
2 years ago
7

HELP ME PLEASE IM ONLY A FRESHYMANS IM CRYING IN MY BED FEEL PITY AND HELP ME PLSSSSS

Mathematics
1 answer:
IRISSAK [1]2 years ago
7 0

Step-by-step explanation:

4. : Multiplication Equality

Addition Equality

Check:

5 - 2y = 19

- 2y =  - 14

y = 7

5.

Division Equality

Multiplication Equality

Subtraction Equality

Check:

\frac{5m}{4}  - 3 =  - 13

\frac{5m}{4}  =  - 10

5m =  - 40

m =  - 8

6.

Multiplication Equality

Addition Equality

Division Equality

Check:

\frac{ - 25r + 13}{4}  =  - 3

- 25r + 13 =  - 12

- 25r =  - 25

r = 1

8.

t=3,. Given

3t = 9

Justification: Multiply both sides by 3

Step 2:

3t + 50 = 59

Add 50 to both sides.

Step 3:

\frac{3t + 50}{4}  =  \frac{59}{4}

Divide both sides by 4.

Check

\frac{3t + 50}{4}  =  \frac{59}{4}

3t + 50 = 59

3t = 9

t = 3

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Which graph represents the solution of x² + y² < 25 and y² <6x?
maxonik [38]

The graph is shown below

<h3>What is graph?</h3>

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

As, the equation x² + y² < 25 represents equation of circle.

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So, the graph will represent a parabola.

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The perimeter of rectangle is 16 and 6 in. Find the value a
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Step-by-step explanation:

4 0
3 years ago
2. Inflation is at a rate of 7% per year. Evan's favorite bread now costs $1.79. What did it cost 10 years ago? How long
Makovka662 [10]

Answer:

It cost $0.91 10 years ago.

It takes 10.24 years for the cost of bread to double.

Step-by-step explanation:

The equation for the price of bread after t years has the following format:

P(t) = P(0)(1+r)^{t}

In which P(0) is the current price, and r is the inflation rate, as a decimal.

If we want to find the price for example, 10 years ago, we find P(-10).

Inflation is at a rate of 7% per year. Evan's favorite bread now costs $1.79.

This means that r = 0.07, P(0) = 1.79. So

P(t) = P(0)(1+r)^{t}

P(t) = 1.79(1+0.07)^{t}

P(t) = 1.79(1.07)^{t}

What did it cost 10 years ago?

P(-10) = 1.79(1.07)^{-10} = 0.91

It cost $0.91 10 years ago.

How long before the cost of the bread doubles?

This is t for which P(t) = 2P(0) = 2*1.79. So

P(t) = 1.79(1.07)^{t}

2*1.79 = 1.79(1.07)^{t}

(1.07)^{t} = 2

\log{(1.07)^{t}} = \log{2}

t\log{1.07} = \log{2}

t = \frac{\log{2}}{\log{1.07}}

t = 10.24

It takes 10.24 years for the cost of bread to double.

5 0
3 years ago
Jill works on the weekends.Last saturday she worked 5.75 hours and on saturday she worked 6.75 hours.She earns $7.50 per hour.Ho
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