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3 years ago

How do I solve this?!

Mathematics

1 answer:

viva [34]3 years ago

3 0

Add 11 to 9 for one side of the solution: 20

Subtract 11 from 9 to get the other solution: -2

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If p stays constant and u is doubled what happens to e? given U=EP

Stolb23 [73]

We are given the expression:

U = E * P

The equality symbol “ = “ means that for all cases, the value of U and E * P must always be equal. This means that whatever happens on the left side, must equally happen on the right side.

So what this actually means is that, if we double U so we must also double the expression E * P, that is:

2 U = 2 (E * P)

However since P stays constant in the process, therefore only E is changed, hence:

2 U = P * 2 E

So we can see that E is also doubled.

4 0

4 years ago

The bowling lanes charge an hourly fee for bowling and $2 to rent shoes for the day. Gerry rented shoes and bowled for 2 hours a

Ahat [919]

Answer: I think it’s f(x)=2x+2

Step-by-step explanation:

5 0

3 years ago

Why do you have to be more careful with inequalities in this situation?

fgiga [73]

With an inequality you have to be careful because you never know when you are going to do the wrong steps in the equation

5 0

4 years ago

Read 2 more answers

A travelers ground speed is 2 feet per second against the walkway and 8 feet per second with the walkway, what is the travelers

creativ13 [48]

Answer:

The traveller's speed is 5ft/s and the walkway speed is 3ft/s

Step-by-step explanation:

Given

Represent the traveller's speed with T and the walkway's speed with W.

When the traveller walk against the walkway, we have:

$T - W = 2$ ---- i.e. 2ft/s against the walkway

When the traveller walk with the walkway, we have:

$T + W = 8$ ---- i.e. 8ft/s with the walkway

Required

Solve for W and T

$T - W = 2$ --- (i)

$T + W = 8$ --- (ii)

Add (i) and (ii)

$T + T - W + W = 2 + 8$

$T + T = 2 + 8$

$2T = 10$

Divide both sides by 2

$\frac{2T}{2} = \frac{10}{2}$

$T = \frac{10}{2}$

$T = 5$

Substitute 5 for T in (ii)

$T + W = 8$

$5 + W = 8$

Make W the subject

$W = 8 - 5$

$W = 3$

Hence, the traveller's speed is 5ft/s and the walkway speed is 3ft/s

7 0

3 years ago

What is an equation of the line that passes through the points (-6, -8)and (-3, -3)? Put your answer in fully reduced form.

astra-53 [7]

Answer:

The equation of the line that passes through the points (-6, -8)and (-3, -3) is

5 x - 3 y + 6 =0

Step-by-step explanation:

Step(i):-

Given points are ( -6 ,-8) and ( -3 ,-3)

Slope of the line

$m = \frac{y_{2}-y_{1} }{x_{2} - x_{1} } = \frac{-3+8}{-3+6} = \frac{5}{3}$

Step(ii):-

Slope -point form

$y-y_{1} =m(x-x_{1} )$

$y-(-8) =\frac{5}{3} (x-(-6) )$

cross multiplication, we get

3(y +8 ) = 5(x+6)

3 y +24 = 5 x +30

5 x - 3 y +30 -24 =0

5 x - 3 y + 6 =0

Final answer:-

The equation of the line that passes through the points (-6, -8)and (-3, -3) is

5 x - 3 y + 6 =0

5 0

3 years ago