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horsena [70]
3 years ago
5

A soccer player scored 15 goals during the

Mathematics
1 answer:
Marizza181 [45]3 years ago
4 0
1.5 goals were attempted
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Ahmed wants to buy one of two skateboards. One skateboard costs $1 more than the
Papessa [141]

Answer:

1 skateboard will cost $73 and the other will cost $72

Step-by-step explanation:

Skateboard A (Original) = X

Skateboard B (+$1) = X + 1

Solving for X

(x + 1) + x = 145

2x + 1 - 1 = 145 - 1

2x = 144

2/2 = x  

144/2 = 72

x = 72

4 0
2 years ago
Absolute value of 3 ​
den301095 [7]

Answer:

3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help me with this problem<br><br> please show steps so i know for next time
vladimir2022 [97]
<h3>Answer:  2/3, -4/3</h3>

=========================================================

Explanation:

You could use the AC method to factor this, but the quadratic formula is the most efficient route in my opinion. This will avoid any guess-and-check.

Compare the original equation to the form a\text{x}^2 + b\text{x} + c  = 0

We have a = 9, b = 6, and c = -8

Those values lead to...

\text{x} = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\\text{x} = \frac{-6\pm\sqrt{(6)^2-4(9)(-8)}}{2(9)}\\\\\text{x} = \frac{-6\pm\sqrt{324}}{18}\\\\\text{x} = \frac{-6\pm18}{18}\\\\\text{x} = \frac{-6+18}{18} \ \text{ or } \ \text{x} = \frac{-6-18}{18}\\\\\text{x} = \frac{12}{18} \ \text{ or } \ \text{x} = \frac{-24}{18}\\\\\boldsymbol{\text{x} = \frac{2}{3} \ \text{ or } \ \text{x} = -\frac{4}{3}}\\\\

Side notes:

  • 2/3 = 0.667 approximately
  • -4/3 = 1.333 approximately
  • Since your teacher did not give rounding instructions, I'll assume s/he wants the fraction form of each x value (rather than the decimal form). Be sure to follow all instructions given, and ask for clarification if need.
  • To confirm the solutions, replace every copy of x with either 2/3 or -4/3 (pick one value only). Simplifying the left hand side should lead to 0. I'll let you check each answer.
5 0
2 years ago
The rectangle has an area of 4(x+3) square units.
Tems11 [23]
A)
If it has an area of 4(x+3) we can think that one side has a length of 4, and the other has a length of (x+3).

So, if the dimensions were doubled, 4 x 2 = 8. And 2(x+3) = 2x+6.

The new area would be:

8(2x+6) = 16x+48.

B) 
The ratio will be the same. For example lets plug in some points:

x=0
4(0+3) = 4(3) = 12

And 
16(0)+48 = 0+48 = 48

So the ratio is 48/12 = 4

Lets plug in another point.

x=2
4(2+3)= 4(5) = 20

And
x=2
16(2)+48 = 32 + 48 = 80

80/20 = 4

So the ratio is the same :)
5 0
3 years ago
Read 2 more answers
Write the equation of the line that passes through the points (7,9) and
nevsk [136]

Step-by-step explanation:

9 = a7 + b

-2 = a9 + b

b = 9-7a and b = - 2-9a

9 - 7a = - 2-9a

2a = - 11

a = - 5.5

b = 9 - 5.5*7 = - 29.5

y = -5.5x - 29.5

5 0
3 years ago
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