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3 years ago

Can some one please help me to teach this to my daughter

Mathematics

1 answer:

EastWind [94]3 years ago

3 0

28mi/1 hr = 28 mi/60 min = 1 mi/(60/28) min =

28 mi/hr = 28 mi/60 min since there are 60 min in 1 hr
1 mi/(60/28) min since you divide top and bottom of 28/60 by 28 to get
1 mi/(60/28) min = 1mi/(15/7) min = 1 mi/ 2 1/7 min

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If a line with a slope of -2 crosses the y-axis at (0,3) what is the equation of the line

Ghella [55]

Hello!

The equation can be written as seen below. You only need a y-intercept and slope to write the equation.

y=-2x+3 (it intercepts at a y-value of 3).

I hope this helps!

5 0

3 years ago

Select the three equations that pass through the points (-4, -16) and (5,2).

dezoksy [38]

Answer:

The equation of the line is $y-2 = 2(x - 5)$ , that passes through points $(-4, -16)\ and\ (5,2)$

Step-by-step explanation:

Given points are $(-4, -16)\ and\ (5,2)$

We need to write the equation of the line that passes through these points

First, we will find slope of this line

$m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{2-(-16)}{5-(-4)}\\\\m=\frac{2+16}{5+4}\\\\m=\frac{18}{9}=2$

So, our slope is $2$ . Now, we will plug the point $(5,2)$ in the equation below.

$(y-y_1)=m(x-x_1)\\y-2=2(x-5)\\$

So, the equation of the line is $y-2 = 2(x - 5)$ .

5 0

4 years ago

Read 2 more answers

CHECK MY ANSWERS SOMEONE

Galina-37 [17]

Option A is correct.

Step-by-step explanation:

We need ti identify the radius of circle.

The radius of circle is a length of the line from center of the circle to anywhere on the edge of circle. It is also shown in the figure attached.

From the given options, only FE is the line that goes from center of circle to the edge of circle. So, FE is the radius of the circle.

So, Option A is correct.

Keyword: Radius of circle

Learn more about Radius of circle at:

#learnwithBrainly

7 0

3 years ago

New type of pump can drain a certain pool in 5 hours. an older pump can drain the pool in 15 hours. how long will it take both p

Leno4ka [110]

New pump:
5 hours = 1 pool
1 hour = 1/5 pool

Old pump:
15h = 1 pool
1h = 1/15 pool

If both work together
1h = 1/5 + 1/15 = 4/15 pool

4/15 pool = 1 hour
1/15 pool = 1/4 hour
15/15 pool = 1/4 x 15
1 pool = 3.75 hours or 3 hours 45 mins

6 0

4 years ago

Dollars per pint

lisabon 2012 [21]

Answer:

0.42 dollar per pint

2.36 pints per dollar

6 0

2 years ago