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elena-14-01-66 [18.8K]
4 years ago
13

I just need the answer. ( look at the picture )

Mathematics
1 answer:
monitta4 years ago
7 0

Answer:

P * 300000 = 30

.01%

Step-by-step explanation:

Let P equal the percent.  Of means multiply and is means equals

We need to make sure the units are the same.  I will convert km to cm

3 km *1000m/1km  * 100cm/1m =300000 cm

Now we can write the equation

P * 300000 = 30

Divide each side by 300000

P 300000/300000 = 30/300000

P =.0001

Changing this from decimal to percent

P = .0001*100 = .01 %

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Create an equivalent ratio to 5:2 by multiplying both sides by 2.<br> What is the equivalent ratio?
skelet666 [1.2K]

Answer:

10/4

Step-by-step explanation:

Randomthing2143 is right

8 0
3 years ago
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If x+y=5,x-y=4,find the value of x²-y²​
inysia [295]

Answer:

20

Step-by-step explanation:

→ First find the value of x and y

x + y = 5

x - y = 4

→ Add the equations to cancel out the y's

2x = 9

→ Divide both sides by 2 to find the value of x

x = 4.5

→ Substitute x = 4.5 back into x - y = 4 to find the value of y

4.5 - y = 4

→ Minus 4.5 from both sides to isolate -y

-y = -0.5

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→ Substitute x = 4.5 and y = 0.5 into x² - y²

4.5² - 0.5² = 20.25 - 0.25 = 20

4 0
3 years ago
Solve each equation.<br> 1/3a = -5 a = ?<br> 12 - b = 12.5 b = ? <br> -0.1 = -10c c = ?
Rina8888 [55]

Answer:

a = -15, b = -.5, c = -1

Step-by-step explanation:

1/3a = -5 --> multiply each side with 3 --> a = -15

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.1 = -10c --> multiply each side with -10 --> c = -1

8 0
3 years ago
What is the slope of the line through the given points:
telo118 [61]

Answer: slope is 1

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I hope this is good enough:

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we are ratio as

=\frac{3}{7}

It will be equivalent to only those terms which would be multiple of this term

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and we get

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so, it is very similar to 12/35

so, it will be equivalent to 12/35

so, option-C.......Answer

7 0
3 years ago
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