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3 years ago

15

Daikwon and Chris are about to record a new CD. They have a choice between two back up bands. One band charges $50 plus $20 for

each take. The second band charges S20 plus $25 for each take.

1 answer:

MrRa [10]3 years ago

5 0

Answer:

The second band

Step-by-step explanation:

50+20=70

20+25=45

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HELP REAL QUICK PLS TY

Veronika [31]

Answer:

Step-by-step explanation:

the area is L x W so its 42cm

7 0

3 years ago

The function g(x) = 12,500(0.91)x represents the value of a piece of farm equipment after x years. Approximately when will its v

topjm [15]

Answer:

B. 7.3 years

Step-by-step explanation:

The question is wrong. The correct function is :

$g(x)=12500(0.91)^{x}$

We have the function $g(x)$ that represents the value of a piece of farm equipment after $x$ years.

This means that when $x=0$ its original value is :

$g(0)=12500(0.91)^{0}=12500$

Now we want to calculate approximately when will its value be half its original value. Then, we write :

$\frac{12500}{2}=6250$

$6250$ is half of its original value. We need to find $x$ that satisfies the following equation :

$g(x)=6250=12500(0.91)^{x}$

Solving for $x$ :

$6250=12500(0.91)^{x}$ ⇒

$0.5=(0.91)^{x}$

Now we apply natural logarithm to each side of the equation :

$ln(0.5)=ln[(0.91)^{x}]$

Using logarithm properties :

$ln(0.5)=ln[(0.91)^{x}]$ ⇒

$ln(0.5)=x[ln(0.91)]$

$x=\frac{ln(0.5)}{ln(0.91)}$ ⇒

$x$ ≅ $7.3496$

The correct option is B. 7.3 years

4 0

3 years ago

PLEASE HELLLP!!!!! If x+7=2y and y=2x−1, what is the value of y? (NOT 13)

oee [108]

Answer:

(C) 5

Step-by-step explanation:

x+7=2y

<em>Subtract 7 from both sides</em>

x=2y-7

2y-7=x

<em>Multiply both sides by 2</em>

4y-14=2x

y=2x−1

<em>Add 1 to both sides</em>

y+1=2x

<u>Combine equations:</u>

y+1=4y-14

<em>Add 14 to both sides</em>

y+15=4y

<em>Subtract y from both sides</em>

15=3y

3y=15

<em>Divide both sides by 3</em>

y=5

<u>The answer is </u><u>(C) 5.</u>

5 0

3 years ago

How can i determine the sale price if you were given the regular price and percent of markdown

algol [13]

You would multiply the sales regular price by the percent and then subtract your answer from the regular sale price. For example, if something cost $499 and the sales price was 15% off, you would multiply 499 by 0.15 and then you would get 74.85.

7 0

3 years ago

Read 2 more answers

Solve the following equation-7x-4y=-4 -9x-5y=-6

maks197457 [2]

Answer:

$\boxed{x = 4~~and~~ y = -6}$

.

Step-by-step explanation:

-7x - 4y = -4 (times 5) -35x - 20y = -20

-9x - 5y = -6 (times 4) -36x - 20y = -24

.

Eliminate both equations

$-35x - 20y = -20$

<u>-36x - 20y = -24 </u> <u> </u>

$x = 4$

.

Substitute the value of x to one of equations

$-7x - 4y = -4$

$-7(4) - 4y = -4$

$-28 - 4y = -4$

$-4y = - 4 + 28$

$-4y = 24$

$y = \frac{24}{-4}$

$y = -6$

3 0

3 years ago

Read 2 more answers