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Alinara [238K]
3 years ago
12

2. A parent pledged $0.50 per lap in a walk-thon at school.

Mathematics
1 answer:
Readme [11.4K]3 years ago
3 0
But how many laps did she walk
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Algebra help please? thank you SO much in advance!
Harman [31]
X(x + 3)  + x(x - 3) = 2
x^2 + 3x +x^2 - 3x = 2
2x^2 = 2
x^2 = 1
x = +1 and x = -1

answer 
x = +1 and x = -1
6 0
3 years ago
PLEASE HELP ME<br> Factor each expression,<br>  2n^(2)+ 3n -2
kotegsom [21]
I would suggest factoring using the grouping method. The answer I got was (2n-1)(n+2)
5 0
3 years ago
Please help me with this pleaseee
torisob [31]

Answer:

x = 88.2

Step-by-step explanation:

The angle at the top of the triangle = 90° - 10° = 80°

and the left side of the triangle is x ( opposite sides of a rectangle )

Using the tangent ratio in the right triangle

tan80° = \frac{opposite}{adjacent} = \frac{500}{x}

Multiply both sides by x

x × tan80° = 500 ( divide both sides by tan80° )

x = \frac{500}{tan80} ≈ 88.2

5 0
3 years ago
Which expression can be used to determine 50% of 42?
snow_lady [41]

Answer: 42 divided by 2

Step-by-step explanation: 50% is one half, and 42/2 is one half of 42.

4 0
3 years ago
Read 2 more answers
2х - бу = 2<br>x + бу = 28​
scZoUnD [109]

Answer:

x = 10

y = 3

Step-by-step explanation:

Given

2x - 6y = 2

x + 6y = 28

Add both equations

2x + x -6y + 6y = 2 + 28

3x = 30

Divide both sides by 3

x = 30/3

x = 10

Substitute 10 for x in either equations to get y

Using equation 2 , we have

x + 6y = 28

10 + 6y = 28

Subtract 10 from both sides

10 - 10 + 6y = 28 - 10

6y = 18

Divide both sides by by 6

y = 18/6

y = 3

Therefore

x = 10

y = 3

7 0
3 years ago
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