3 years ago

Help me with these math problems

1 answer:

3 0

Just rearrange the inequalities to make x the subject.

2 + y <= 3
Subtract 2 from both sides.
y <= 1

7x > 56
Divide both sides by 7.
x > 8

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The population of a town is 12,000, and it grows at a rate of 5% per year. Write an exponential function in the form <img src="h

Ksivusya [100]

Answer: Exponential function: $y=12000(1.05)^x$

Step-by-step explanation:

Exponential function: $y=ab^x$ , a = initial value , x= time, b= growth factor , b= 1+r , where r=rate of growth.

Given: Initial population = a= 12,000,

rate of growth = r= 5% = 0.05

Then, b= 1+r= 1+ 0.05 = 1.05

Substitute value of a and b in (i), we get

$y=12000(1.05)^x$

Hence, The required exponential function: $y=12000(1.05)^x$ , where x= time.

4 0

3 years ago

A rectangular sandbox has an area of 55 square feet. find the length and width of the box if the length is one more than twice t

Dmitrij [34]

Answer:

The length is 5

The width is 11

Step-by-step explanation:

11 is more than two times bigger than 5

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4 0

2 years ago

Loan A (bank) requires a total payback of $54,289.44 while Loan B (dealership) requires a total payback of $55,098.60.

dedylja [7]

Answer: Loan B requires more interest by $809.16.

Step-by-step explanation:

Subtract the total pay back of loan B from loan A

= $55,098.60 - $54,289.44

= $809.16

I hope this helps, please mark as brainliest answer.

8 0

2 years ago

To make dough, Reba needs 2 1/2 cups of flour. How much flour does she need to make 5 batches of dough?

aleksandr82 [10.1K]

Answer:

12 1/2 cups of flour

Step-by-step explanation:

2 1/2 cups for each batch

5 batches

2 1 /2 x 5 =

12 1 /2

5 0

3 years ago

Read 2 more answers

X+y(x^2+y^2)-xy= Answer

disa [49]

Answer:x^3+y^3+x^2 y+y^2 x-xy

Step-by-step explanation:

X+y(x^2 +y^2)- X y

Expand the bracket

X^3 +xy^2 +yx^2 -xy

4 0

3 years ago