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3 years ago

Simplify the expression by combining like terms :

1 answer:

8 0

Here is your answer:

2b + 7b^2 - 2 + 3b - 1 + b
Combine 2b and 3b
2b+3b=5b
Then do the exponent rule:
7×7=49b
Which equals:

(5b) b^2 + ( 2 ) b + (4b)

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The sum of three numbers is 7. One of the numbers is one more than the sum of the other two numbers. It is also four times the d

Sedaia [141]

The only numbers I could think of would be 1, 2, and 4 because 4 is greater than 3 (2+1) and four times greater than 1 (2-1)

5 0

3 years ago

Read 2 more answers

Suppose you waited 10 years to invest in the same retirement fund and have the same $400,000 for retirement at the same 8% inter

Ierofanga [76]

Answer:

Step-by-step explanation:

Using the compound interest formula to fins the amount after 10years;

A = P(1+r)^n

Principal P = $400,000

Rate r = 8% = 0.08

Time t = 10 years

Substitute

A = 400,000(1+0.08)^10

A = 400,000(1.08)^10

A = 400,000(2.1589)

A = 863,569.99

A ≈ 863,570

Hence the amount after 10 years is $863,570

Monthly deposit = $863,570/120 (10 years is equivalent to 120months)

Monthly deposit = 7,196.42

<em>Therefore he will have to deposit $7,196.42 into his account monthly</em>

7 0

2 years ago

Circle A has a diameter of approximately 20 inches and an area of approximately 300 in2.

Katena32 [7]

Answer:

4. About 2,700 in2

Step-by-step explanation:

The area of a circle ( $A$ ), measured in square inches, is directly proportional to the square of its diameter ( $d$ ), measured in inches. That is:

$A \propto d^{2}$

$A = k\cdot d^{2}$

Where $k$ is the constant of proportionality, dimensionless.

In consequence, the following relationship between circles A and B is obtained:

$\frac{A_{B}}{A_{A}} = \frac{d_{B}^{2}}{d_{A}^{2}}$

The area of the circle B is now cleared:

$A_{B} =\left(\frac{d_{B}}{d_{A}} \right)^{2}\cdot A_{A}$

Given that $d_{A} = 20\,in$ , $d_{B} = 60\,in$ and $A_{A} = 300\,in^{2}$ , then:

$A_{B} = \left(\frac{60\,in}{20\,in} \right)^{2}\cdot (300\,in^{2})$

$A_{B} = 2700\,in^{2}$

Therefore, the correct answer is 4.

7 0

3 years ago

- What are the actual dimensions of the check-out area? Floor Plan of Library 2 cm + 3 cm - 4 cm Study Area Books 7 cm Check-out

user100 [1]

Answer:

sorry I need some points

Step-by-step explanation:

it's an urgent plzz sorry

6 0

3 years ago

A number is 9 more than another number. Twice the sum of the two numbers is 10. Find the two numbers.

Brrunno [24]

Step-by-step explanation:

the formula can be;

X+9x=10

10x=10X=10/10=1

X=1+9(1)=1+9=10 Answer

4 0

3 years ago