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professor190 [17]
3 years ago
15

Please help asap!!!!!

Mathematics
1 answer:
Leya [2.2K]3 years ago
4 0

Answer:

c

Step-by-step explanation:

th two lines on each side of the x means absolute value. meaning the negative signs don't matter... l-4l=4

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Suppose that y varies directly with x. Given x=4 when y=20.<br> Find y when x = 3
scoray [572]

Answer:

y = 15

Step-by-step explanation:

Given: y varies directly with x, x=4 when y=20

To find:  y when x = 3

Solution:

As y varies directly as x, it means that as x increases, y also increases by the same factor.

As y varies directly with x,

y=kx

Here, k is a constant

As x = 4 when y = 20,

20=4k\\k=\frac{20}{4}=5\\\Rightarrow y=5x

Put x = 3

y= 5(3) = 15

4 0
3 years ago
PLEASE HELP!!!
vovangra [49]

Answer:

<em>Michael drove faster than Jordan.</em>

Step-by-step explanation:

<u>Speed</u>

The speed is the ratio between the distance d traveled by an object and the time t it took to move. In terms of a mathematical equation, it's expressed as:

\displaystyle v=\frac{d}{t}

Michael drove 210 miles in 3 and one-half hours. The parameters to calculate the speed are: d= 210 miles, t = 3.5 hours. The speed of Michael is:

\displaystyle v_M=\frac{210}{3.5}=60\ mi/h

Jordan drove 330 miles in 6 hours, thus his speed is:

\displaystyle v_J=\frac{330}{6}=55\ mi/h

It's clear that Michael drove faster than Jordan.

8 0
3 years ago
Write a polynomial equation in standard form with roots of -3 and 4
liubo4ka [24]

Answer:

I don't know the answer

Step-by-step explanation:

the most seats in guyan

6 0
2 years ago
some psychologists believe that a genius should be defined as anyone having an IQ over 140. If IQ scores are normally distribute
denis23 [38]

Answer:

61,239,550

Step-by-step explanation:

We let the random variable X denote the IQ scores. This would imply that X is normal with a mean of 100 and standard deviation of 17. We proceed to determine the probability that an individual chosen at random from the population would be a genius, that is;

Pr( X>140)

The next step is to evaluate the z-score associated with the IQ score of 140 by standardizing the random variable X;

Pr(X>140)=Pr(Z>\frac{140-100}{17})=Pr(Z>2.3529)

The area to the right of 2.3529 will be the required probability. This area from the standard normal tables is 0.009314

From a population of 6,575,000,000 the number of geniuses would be;

6,575,000,000*0.009314 = 61,239,550

6 0
3 years ago
Read 2 more answers
A - 2 + 3 = -2 I need it worked out​
Genrish500 [490]

Answer: a= -3

Step-by-step explanation:

a+3=-2

a=-3

4 0
3 years ago
Read 2 more answers
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