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Vesna [10]
2 years ago
7

David's showerhead uses three gallons of water per minute. He wants to replace the showerhead with a new one that uses 40% less

water. How many fewer gallons of water would David use during a 10-minute shower with his new shower head?
Plz help
Mathematics
1 answer:
Brrunno [24]2 years ago
3 0

Answer:

12 gallons fewer

Step-by-step explanation:

3 gallons a minute means 30 gallons in 10 mins

40% less = 18l

new nozzle=18 liters in 10mins

meaning there is a 12 gallon difference

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How many computers must the AB Computer Company sell to break even? Let x be the number of computers.
Eduardwww [97]

Answer:

The Company AB must sell 116 computers to break even

Step-by-step explanation:

we have

R(x)=1.5x -----> equation A

C(x)=145+\frac{1}{4}x ----> equation B

where

C is the cost function

R is the revenue function

x is the number of computers sold

we know that

Break even is when the cost is equal to the revenue

so

equate equation A and equation B

1.5x=145+\frac{1}{4}x

Solve for x

subtract 1/4x both sides

1.5x-\frac{1}{4}x=145

1.5x-0.25x=145

1.25x=145

Divide by 1.25 both sides

x=116

therefore

The Company AB must sell 116 computers to break even

7 0
3 years ago
I need help on this easy algebra problem I just suck at math
liq [111]
I got 28.93095228, I hope this is the answer
8 0
3 years ago
Solve the equation using the quadratic formula
amm1812

Answer:

Step-by-step explanation:

Rewrite this quadratic equation in standard form:  2n^2 + 3n + 54 = 0.  Identify the coefficients of the n terms:  they are 2, 3, 54.

Find the discriminant b^2 - 4ac:  It is 3^2 - 4(2)(54), or -423.  The negative sign tells us that this quadratic has two unequal, complex roots, which are:

     -(3) ± i√423        -3 ± i√423

n = ------------------- = ------------------

             2(2)                      4

3 0
3 years ago
What is the median of this set values?
Ierofanga [76]
The answer is D. 18.5
How? Because you have the numbers in order and cross the out it leaves you with 17, and 20 and the number between can be 19 or 18.5.

Hope I helped

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5 0
3 years ago
Read 2 more answers
∠3 is a complement of ∠4, and m∠3=46°. Find m∠4.
Eduardwww [97]

Answer:

m < 4 = 44 degrees

Step-by-step explanation:

Here, we want to find the value of the given angle.

Mathematically, when two angles are complement of each other, they add up

to be 90 degrees. These angles are termed complementary angles.

Thus, by mathematical convention is this present case;

m <3 + m< 4 = 90

46 + m<4 = 90

m<4 = 90-46

m< 4 = 44 degrees

4 0
3 years ago
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