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aleksley [76]
3 years ago
8

Please help Find the value of x

Mathematics
1 answer:
jeka57 [31]3 years ago
3 0

Answer:

54

Step-by-step explanation:

The sum of given angles must be equal to 360°

3x° + 2x° + 90° = 360°

5x + 90 = 360

5x = 270 divide both sides by 5

x = 54

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3 years ago
Albert biked 3 times the number of miles Bob did yesterday. They biked 72 miles altogether. How many miles did Albert bike ?
erastova [34]

Hey there!

To start, first let's assign a variable to each person:

A to represent the miles biked by Albert

B to represent the miles biked by Bob

Now, let's set up a system of equations:

A=3B

A + B = 72

Next, use substitution (plug 3B in for A in the second equation since A is equal to 3B):

3B + B = 72

Then, simplify and solve:

3B + B = 72

(combine like terms)

4B = 72

(divide both sides by 4)

B=18

Now that you know the amount that Bob biked, you can plug his miles into the equation for Albert: A=3B

B=18

A=3(18)

A= 54

Your final answer would be that Albert biked 54 miles.

Hope this helps!

4 0
3 years ago
Annabelle is going to a carnival that has games and rides. Each game costs $1.75 and each ride costs $3.50. Annabelle spent $28
weqwewe [10]

Answer:

$15.75

Step-by-step explanation:

1.75 x 7 = 12.25

28 - 12.25 = 15.75

Add dollar sign. Final answer is $15.75

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