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Fiesta28 [93]
3 years ago
11

I need help Who is here Wat percentage of (a)30 is 15 B)£1 is 23

Mathematics
1 answer:
e-lub [12.9K]3 years ago
7 0

Answer:

(a) is 50%

(b) is 23%

Step-by-step explanation:

15/30 (simplify)

15 divided by 15 is 1

30 divided by 15 is 2

Write that as a fraction

1/2

A half is 0.50 as a decimal number, multiply 0.50 by 100 and you will get 50.

Your answer is 50%

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k=1/2

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5 0
3 years ago
Please help me with this math problem. I have to Use the quadratic formula to solve each equation.
Ierofanga [76]

You have to solve the given expression for q:

2q^2-8=3q

This expression has a quadratic term, which means that it is a quadratic equation. To find the value or values of q, you have to use the quadratic equation, using "q" as the variable instead of "x"

q=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

Where

a is the coefficient of the quadratic term

b is the coefficient of the q term

c is the constant

- First, zero the equation by passing 3q to the left side of the equal sign:

\begin{gathered} 2q^2-8=3q \\ 2q^2-8-3q=3q-3q \\ 2q^2-3q-8=0 \end{gathered}

For this equation the coefficients are:

a= 2

b= -3

c= -8

Replace them in the formula and solve:

\begin{gathered} q=\frac{-b\pm\sqrt{b^2-4ac}}{2a} \\ q=\frac{-(-3)\pm\sqrt{(-3)^2-4*2*(-8)}}{2*2} \\ q=\frac{3\pm\sqrt{9+64}}{4} \\ q=\frac{3\pm\sqrt{73}}{4} \end{gathered}

Next, to determine each possible value of q, you have to solve the sum and difference separately:

Sum

\begin{gathered} q=\frac{3+\sqrt{73}}{4} \\ q=2.886\cong2.9 \end{gathered}

Difference

\begin{gathered} q=\frac{3-\sqrt{73}}{4} \\ q=-1.386\cong-1.4 \end{gathered}

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4 0
2 years ago
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Snezhnost [94]
Answer:<span>x=<span><span><span>23</span>y</span>+<span><span>−11</span><span>3

Or if you need it for a graph question then:
</span></span></span></span><span>
Slope = 3.000/2.000 = 1.500 
x-intercept = 11/-3 = -3.66667<span> 
y-intercept = 11/2 = 5.50000

I hope this helps.</span></span>
4 0
3 years ago
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Helga [31]

Answer:

A

Step-by-step explanation:

7 0
4 years ago
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sammy [17]

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