1 year ago

Joe is 1.6 m tall. His shadow is 2 m long when he stands 3 m

Mathematics

1 answer:

Alla [95]1 year ago

6 0

Answer:

Step-by-step explanation:

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Which ordered pair is a solution to the equation y=4-6x?

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Answer:

the answer to this is b( 2,-8)

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3 years ago

Slope-intercept form of the equation for the line?

vaieri [72.5K]

Answer:

$\large\boxed{y=-\dfrac{3}{10}x+\dfrac{1}{2}}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points from the graph (-5, 2) and (5, -1).

Substitute:

$m=\dfrac{-1-2}{5-(-5)}=\dfrac{-3}{10}=-\dfrac{3}{10}$

We have the equation in form:

$y=-\dfrac{3}{10}x+b$

Put the coordinates of the point (5, -1) to the equation:

$-1=-\dfrac{3}{10}(5)+b$

$-1=-\dfrac{3}{2}+b$

$-\dfrac{2}{2}=-\dfrac{3}{2}+b$ <em>add 3/2 to both sides</em>

$\dfrac{1}{2}=b\to b=\dfrac{1}{2}$

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2 years ago

The bar diagram represents 24 hours in one day and shows a mark at 30%If you sleep 30% of the day, how many hours do you sleep?

horrorfan [7]

Let:

100%---------------->24h

30%------------------>xh

Using cross multiplication:

$\begin{gathered} \frac{100}{30}=\frac{24}{x} \\ solve_{\text{ }}for_{\text{ }}x\colon \\ x=\frac{30\cdot24}{100} \\ x=\frac{720}{100}=7.2h \end{gathered}$

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1 year ago

According to exponent rules, when we divide the expressions we _______ the exponents.

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Subtract :) Hope this helps

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X is greater than or equal to -1 and less than or equal to 8

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Answer:

Is their an equation that can be used a reference to find the sum/difference/product/quotient to this equation?

Step-by-step explanation:

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