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2 years ago

9

What is math? (Please do not tell me what it is used for, here. You should respond by telling me what it is.)

1 answer:

ICE Princess25 [194]2 years ago

8 0

Math is useless only math from 1-7 grade is useful in the real world

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(88888888) (567854326)?

insens350 [35]

The answer is 93692843993747338

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3 years ago

If the probability that Caleb makes a free-throw is 60% what is the probability that Kayla makes two free throws in a row?

ipn [44]

You cannot tell with the data 60%

7 0

3 years ago

zhuklara [117]

Answer: -30

Step-by-step explanation: -13 subtract 17 = -30

5 0

3 years ago

If y = kx, what is the value of k if y = 20 and x = 0.4? A) 5 B) 8 C) 9.6 D) 50

Margaret [11]

Answer: D, 50
y = kx <span>y = 20 and x = 0.4
</span>
What you will do: You will plug in your y and your x.
Your equation should look like: 20=k(0.4)
Next: What you will do is divide each side of your equal sign by 0.4 so you will get your k alone.
You would get: k=50

HOPE THIS HELPS! ^_^

7 0

3 years ago

What are the solutions of the quadratic equation? 4x^2+34x+60=0

insens350 [35]

Answer:

Option 3) -6,-5/2

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$4x^{2} +34x+60=0$

so

$a=4\\b=34\\c=60$

substitute in the formula

$x=\frac{-34(+/-)\sqrt{34^{2}-4(4)(60)}} {2(4)}$

$x=\frac{-34(+/-)\sqrt{196}} {8}$

$x=\frac{-34(+/-)14} {8}$

$x_1=\frac{-34(+)14} {8}=-\frac{20}{8}=-\frac{5}{2}$

$x_2=\frac{-34(-)14} {8}=-6$

6 0

3 years ago