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podryga [215]
3 years ago
6

Need to solve for w​

Mathematics
1 answer:
aalyn [17]3 years ago
7 0

Answer:

W=24

Step-by-step explanation:

2K(9W-18V)=3X+15Y

-12=21

21/23=X-Y-V

=23

=23+1=24

24

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15 points I need help plz ASAP
Yuri [45]

Answer:

See explanation

Step-by-step explanation:

<u>Linear:</u>

1. During the spring, the grass in Gianna's yard grew \frac{1}{2} inch per week.

Equation: y=\frac{1}{2}x, where x is the number of spring weeks, y inches is the height of the grass after x weeks.

2. Rita babysits. She worked 2 hours and earned $24. She worked 3 hours and earned $36.

Equation: y=12x, where x is the number of hours, y is the amount Rita earned in x hours.

<u>Exponential:</u>

1. The population of the town was 25,000 in 1980. Then the population increased by \frac{1}{2}\% per year.

Equation: y=25,000\cdot (1+0.005)^x, where x is the number of years, y is the population after x years passed since 1980.

2. A car was worth $18,500 when it was new. Then the value decreased 18% per year.

Equation: y=18,500\cdot (1-0.18)^x, where x is the number of years, y is the car price after x years passed.

<u>Neither linear nor exponential:</u>

Albert went on a hike. After 1 hour, he had hiked 4 miles; after 2 hours he had hiked 7 miles; after 3 hours he had hiked 11 miles.

The differences 7 - 4 = 3, 11 - 7 = 4 are different, so the function is not linear. Also it is not exponential, becayse each next number of miles is not multiplied the previous number of miles by some number.

3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%7B2%7D%5E%7Bm%7D%20%20%3D%20n%20" id="TexFormula1" title=" {2}^{m} = n " alt=" {2}^{m} =
sveta [45]

Answer:

\displaystyle n^3-\frac{1}{n^{2}}

Step-by-step explanation:

<u>Exponents Properties</u>

We need to recall the following properties of exponents:

(a^x)^y=(a^y)^x=a^{xy}

\displaystyle a^{-x}=\frac{1}{a^x}

We are given the expression:

2^m=n

We need to express the following expression in terms of n.

8^m-4^{-m}

It's necessary to modify the expression to use the given equivalence.

Recall 8=2^3 \text{ and }4 = 2^2. Thus:

(2^3)^m-(2^2)^{-m}

Applying the property:

(2^m)^3-(2^m)^{-2}

Substituting the given expression:

n^3-n^{-2}

Or, equivalently:

\mathbf{\displaystyle 8^m-4^{-m}= n^3-\frac{1}{n^{2}}}

5 0
3 years ago
What is the greatest common factor for 21 and 40?
sdas [7]
<span>To get the Greates Common Factor (GCF) of 21 and 40 we need to factor each value first and then we choose all the copies of factors and multiply them: 

<span><span>21:      3 7</span><span>40:   222 5 </span><span>GCF:         </span></span>The Greates Common Factor (GCF) is:   1<span>
</span></span>
8 0
3 years ago
Read 2 more answers
Write an expression for the sequence of operations described below.
NeX [460]

Answer:

(w/3)-10

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please halp me in the question?
xz_007 [3.2K]

Answer: a. (x-6) + 5x = 90 b. Angle One = 10° Angle Two = 80°

Step-by-step explanation:

A. Since angle 1 plus angle 2 is a right angle, then their sum is 90 degrees. The equation form angle 1 is x-6 and the equation for angle 2 is 5x, so (x-6) + 5x = 90

B. To find x,

x - 6 + 5x = 90

x + 5x = 96

6x = 96

x = 16

So, angle one = (16) - 6 = 10° and angle two = 16 * 5 = 80°

5 0
3 years ago
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