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3 years ago

So I know that |-5| =5 but what does this -|-5| equal? and explain why

1 answer:

7 0

Absolute value
means whatever is inside is positive, once we resolve the inside, work out

|-5|=5

now -5=?=-5

answer is -5 since - of + is negaitve
if you don't get it still think like this

|-5|=5
mulitp;ly by -1 everybody
-|-5|=-5

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A radio is being discounted 40%. If the sale price of the radio is $31.02, what was the original price of the radio?

kobusy [5.1K]

Answer:

$51.70 is the original price

Step-by-step explanation:

Step 1:

Turn 40% into a decimal which makes it 0.40

ex. 50% would be 0.50, 5% would be 0.05 etc.

Step 2:

Put the numbers into this formula: Original Price (x) - Percent Off times Original Price = Sales Price

x - 0.40x = 31.02 this is basically 1x - 0.40x = 31.02 so,

Solving the left side of our equation gives us 1x - 0.40x = 0.60x

so now you have: 0.60x = 31.02

Step 3:

Divide both sides by 0.60 which gets x by itself and gives us the original price which is $51.70

8 0

3 years ago

Of the 21 children at a park, 5 of them are playing on the swings. What is the approximate

Bond [772]

The Answer Is B

Use proportions to find x% of the children playing on the swings.

$\frac{21}{100} = \frac{5}{x\%}$

$x = 23.80952380\%$

Meaning B is correct.

3 0

3 years ago

What is the answer for this question?

grandymaker [24]

Answer:

Step-by-step explanation:

$\frac{11\pi }{6}$ is in the fourth quadrant where tan < 0

The related acute angle = 2π - $\frac{11\pi }{6}$ = $\frac{\pi }{6}$

Hence

tan( $\frac{11\pi }{6}$ )

= - tan( $\frac{\pi }{6}$ )

= - $\frac{1}{\sqrt{3} }$

= - $\frac{1}{\sqrt{3} }$ × $\frac{\sqrt{3} }{\sqrt{3} }$

= - $\frac{\sqrt{3} }{3}$ → A

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3 years ago

Find another name for the given number but with the denominator indicated use multiplying by 1. 1/2 = ?/10

liq [111]

5/10 because it is equivalent to 1/2

So the answer is 5/10

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3 years ago

Describe the key features of the graph of the quadratic function f(x) = x2 - 8x - 20

Zolol [24]

If f(x)=x^2-8x-20 then

dy/dx=2x-8 and d2y/dx2=2

A) Since acceleration is a constant positive the parabola opens upward.

B) Since acceleration is a constant positive the parabola will have a vertex at an absolute minimum

C) The vertex will occur when dy/dx=0, 2x-8=0, 2x=8, x=4

So the axis of symmetry is the vertical line x=4.

The vertex is y(4)=-36, corresponding to the vertex point (4,-36)

The y-intercept occurs when x=0, y(0)=-20, so the y-intercept is the point (0,-20)

7 0

3 years ago