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3 years ago

Please help me with this problem

Mathematics

2 answers:

Nookie1986 [14]3 years ago

8 0

In order for two lines to be perpendicular, their slopes must multiply together to equal to negative one
So we do negative one divided by 2/5 to get the slope of the red line
Which is -5/2
To check, we do 2/5 multiplied by -5/2 which equals to -1 so our answer is correct

worty [1.4K]3 years ago

5 0

-5/2 as perpendicular lines have inverse slopes

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How to find domain and range of a parabola?

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The domain is the value of x, the range is the value of y.
A parabola opens infinitely to the right and left, so x can be any number, the domain is all real numbers
Vertically, however, a parabola opens only one way, either upward or downward. when it opens upward from a a certain level, say, the lower point (the vertex) has a y coordinate of 2, we say the range is all real numbers larger than or equal to 2, or y≥2. When it opens downward, we say the range is all real numbers smaller or equal to 2, y≤2

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3 years ago

A penny is tossed 650 times and heads came up 200 times. What is the experimental probability of tossing tails?

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3 years ago

Haleigh split 4/9 of a gallon of juice into 8 cups. How much juice was in each cup?

Brut [27]

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▹ Answer

1/18 of a gallon of juice in each cup.

▹ Step-by-Step Explanation

Since we have 4/9 of a gallon of juice for 8 cups, we will divide to find the amount of juice in each cup.

$\frac{4}{9} / 8$

Since this operation is division, we have to change 8 to it's reciprocal which is 1/8:

$\frac{4}{9}/ \frac{1}{8} = \frac{4}{72} = \frac{1}{18}$

Our final answer will be 1/18 of a gallon of juice in each cup.

Hope this helps!

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5 0

3 years ago

How can 52/9 be expressed as a decimal?

slava [35]

The answer would be about 5.8

4 0

3 years ago

Read 2 more answers

At a speed of 22 revolutions per minute, how long will it take a wheel of radius 10,

Bogdan [553]

Well, if the radius is 10, then the circumference is $\frac{2*10*22}7=\frac{440}7$
What's the unit? Either way, 22 rev. per minute means each minute you go by $22*\frac{440}7=\frac{9680}7$ units per second. Now you got the linear speed, just find out the time by dividing the distance by the speed!
So, what's the unit for the radius?

5 0

3 years ago

Please help me with this problem​

Please help me with this problem