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3 years ago

9

The equation 3(x + 2) + 4x = 6x + 8 + xhas no solution. Ricco correctly says that he can change one number in the equation to ma

ke an equation that has infinitely many solutions. What number should he change? What number should he use instead? Explain.

1 answer:

ad-work [718]3 years ago

7 0

Answer:

He should change the number x is equal to. (i think)

Step-by-step explanation:

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Solve the inequality. Show your work<br><br> 6y -8 ≤ 10

prohojiy [21]

6y - 8 ≤ 10 Add 8 to both sides
6y ≤ 18 Divide both sides by 6
y ≤ 3

Y is less than or equal to 3.

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4 years ago

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On the day of his 18th birthday harry decided to start saving money regularly

Veseljchak [2.6K]

We have been given that on the day of his 18th birthday Harry decided to start saving money regularly . Starting on that day, he could save 30.00 on the same date every month. We are asked to find the amount saved by the day before Harry's 60th birthday.

First of all, we will find years from 18 years to 60 years.

$\text{Years}=60-18=42$

We know that 1 year equals 12 months.

$\text{42 years}=12\times 42\text{ Months}=504\text{ Months}$

To find total amount saved, we will multiply 504 months by amount saved per month.

$\text{Total amount saved}=\$30\times 504$

$\text{Total amount saved}=\$15,120$

Therefore, Harry would have saved $\$15,120$ by the day before his 60th birthday.

3 0

3 years ago

If a car traveling at 75 mph west, changes its direction to east, does it accelerate?

antiseptic1488 [7]

Answer:

Yes, that's right, a change in the direction of motion results in an acceleration even if the moving object neither sped up nor slowed down. That's because acceleration depends on the change in velocity and velocity is a vector quantity — one with both magnitude and direction.

Step-by-step explanation:

8 0

3 years ago

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Need help!! I can't figure this out

Sidana [21]

9514 1404 393

Answer:

12. $1,035,057.23

13. $988,881.23

14. $7,762.93

15. $8,686.16

16. $967,647.66

Step-by-step explanation:

The annuity and amortization formulas are used for problems like this.

sum of monthly payments = P((1 +r/12)^(12t) -1)/(r/12)

monthly amount available = P(r/12)/(1 -(1 +r/12)^(-12t))

__

12. The sum of monthly payments of 74, accumulated at 9% compounded monthly for 52 years is ...

A = ($74)((1 +.09/12)^(12·52) -1)/(.09/12) = $1,035,057.23

__

13. The total of payments is ...

$74×12×52 = $46,176

So, the interest earned is ...

$1,035,057.23 -46,176 = $988,881.23

__

14. The amount available in perpetuity is the monthly interest on this account balance.

$1,035,057.23 × .09/12 = $7,762.93

__

15. The monthly amount available for 25 years is found from the amortization formula:

A = $1,035,057.23(.09/12)/(1 -(1 +.09/12)^(-12·25)) = $8686.16

__

16. The amortization formula is used for this, too.

8066 = P(.094/12)/(1 -(1 +.094/12)^(-12·30)) = 0.00833568P

P = $8066/0.00833568 = $967,647.66

7 0

3 years ago

What is the equation of this graph? <br><br>a) y=-1 <br>b) x=-2<br>

Ivan

Answer:

a) y=-1

Step-by-step explanation:

Graph is intersecting y-axis at (0,-1)

So equation of the graph is y = - 1

4 0

3 years ago