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Ostrovityanka [42]
3 years ago
11

Need help. this is hard.

Mathematics
1 answer:
kicyunya [14]3 years ago
5 0
\dfrac{x}{y}=\dfrac{13}{5}\\
x+y=90\\\\
5x=13y\\
x=90-y\\\\
5(90-y)=13y\\
450-5y=13y\\
18y=450\\
y=25\\\\
x=90-25\\
x=65

It's 65 and 25.
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Urgent help pleaseeeeeee
Helga [31]

Answer:

2x - 10 = 10 - 3x

Simplifying

2x + -10 = 10 + -3x

Reorder the terms:

-10 + 2x = 10 + -3x

Solving

-10 + 2x = 10 + -3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3x' to each side of the equation.

-10 + 2x + 3x = 10 + -3x + 3x

Combine like terms: 2x + 3x = 5x

-10 + 5x = 10 + -3x + 3x

Combine like terms: -3x + 3x = 0

-10 + 5x = 10 + 0

-10 + 5x = 10

Add '10' to each side of the equation.

-10 + 10 + 5x = 10 + 10

Combine like terms: -10 + 10 = 0

0 + 5x = 10 + 10

5x = 10 + 10

Combine like terms: 10 + 10 = 20

5x = 20

Divide each side by '5'.

x = 4

Simplifying

x = 4

3 0
2 years ago
Read 2 more answers
On a spinner: P(3) = ½ and the p(4) = ⅙ What is the probability of getting 3 or 4?
scoundrel [369]
I agree that and means multiplication, but in this problem it says OR. When you have or, you have to add. 1/2 +1/6 would be 2/3
4 0
3 years ago
Rewrite<br> 4/10 : 1/25 as a unit rate.<br><br> A: 10:1<br> B: 25:4<br> C: 2:125<br> D: 100:1
Vladimir79 [104]

Answer:

4/10 : 1/25

4/10 / 1/25 = 4/10 x 25/1 = 100/10 = 10.

10 can also be written as 10:1, so A is correct.

Hope this helps!

6 0
3 years ago
5) Lee's model airplane flies at 18 miles per hour. Lee took the plane to a field in windy weather. It took six minutes to fly 2
kap26 [50]

The wind is blowing at the rate of 4 miles per hour

<h3>Speed and distances</h3>

The formula for calculating speed is expressed as:

Speed = Distance/Time

Given the following parameters

Speed of airplane = 18 miles per hour

Speed in wind = 2.2 * 10  = 22 miles/hr

Speed of the wind = 22 - 18

Speed of the wind = 4mi/hr

Hence the wind is blowing at the rate of 4 miles per hour

Learn more on speed here: brainly.com/question/4931057

7 0
2 years ago
Find the area please, round to the nearest tenth if necessary. If you’re correct I’ll brainliest you
Tanzania [10]

Answer:

21

Step-by-step explanation:

(5x5) the big square - (2x2) the small square

25-4=21

8 0
3 years ago
Read 2 more answers
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