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alexdok [17]
3 years ago
10

A certain number added to its square is 30. Find the number

Mathematics
1 answer:
Alex Ar [27]3 years ago
5 0
X+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5
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A store sells 5 models of cameras for $260,$120,$220,$300, and $120. If the sales tax rate is 2%, what are the mean, median, mod
Natalka [10]

Answer:

159.12

Step-by-step explanation:

find the amount with taxe (Ax1.02)

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6 0
3 years ago
Read 2 more answers
Solve for x: 7x-3/5x-2 = -2​
VMariaS [17]

Step-by-step explanation:

<h3>★ Solution:-</h3>

\sf \leadsto \dfrac{7x - 3}{5x - 2} = -2

\sf \leadsto 7x - 3 = -2(5x - 2)

\sf \leadsto 7x - 3 = -10x + 4

\sf \leadsto 7x + 10x = 4 + 3

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4 0
2 years ago
Can somebody help and explain this plzz
8_murik_8 [283]
A) Every T is worth 7 points, and every F is worth 3 points.  So if we let T = 7 and F = 3, we can count how many T's and F's each team scored and write it as an expression.


So for the East Side Bulldogs, they have 7 touchdowns and 6 field goals, thus the expression for them is:

7T + 6F

For the West Side Bulldogs, they have 5 touchdowns and 5 field goals, thus the expression for them is:

5T + 5F

B) The difference would be written as:
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C) To determine how many more points the winning team has than the losing team, calculate the scores of the two teams.  Then subtract the smaller number from the larger number to determine the score differential.
8 0
3 years ago
Please help me fast this question​
romanna [79]

Answer:

64÷16+[12x{16÷(16-10)}]

64÷16+[12x{16÷6}]

64÷16+[12x2.66666666667]

64÷16+32

4+32

36

3 0
3 years ago
Christy drove 135 miles in 2.5 hours what was her average speed in miles per hour
vlada-n [284]
Her avarage speed in miles per hour is 54 
How i solved this was by 135/2.5 and i got 54
I hope this helps!
5 0
3 years ago
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