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Vinil7 [7]
3 years ago
8

An ASB Robusta 300 TS sump pump can remove water from Martha's flooded basement in 70 min .The 1 Little Giant 1-A sump pump can

complete the same job in in 30 min. How long would it take the two pumps together to pump out the basement?
Mathematics
1 answer:
aleksandrvk [35]3 years ago
5 0
21 minutes. hope this helps.
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Choose the solutions to the two equation system.<br>6.0 + 3y = 30<br>15+ y = 7​
zloy xaker [14]

Answer:

y= -8 or 8

Step-by-step explanation

30-6= 24

24/3=8

y=8

15+y=7

y=-8

3 0
3 years ago
A jeweler orders necklaces from a website that offers $6 shipping for any-size order. Each necklace costs $7. The jeweler wants
Furkat [3]

Answer:

c = $7n + $6

Step-by-step explanation:

$6 shipping for any size

$7 per necklace

let n equal the quantity of necklaces and c equal the total cost.

you buy n amount of necklaces and add the shipping cost to find your cost.

7 0
3 years ago
Read 2 more answers
Which functions have an axis of symmetry of x = -2? Check all that apply. A. f(x) = x^2 + 4x + 3 B. f(x) = x^2 - 4x - 5 C. f(x)
Snowcat [4.5K]

Answer:

A. f(x) = x^2 + 4x + 3

D. f(x) = -2x^2 - 8x + 1

Step-by-step explanation:

The axis of symmetry is found by h = -b/2a  where ax^2 +bx +c

A. f(x) = x^2 + 4x + 3

  h = -4/2*1 = -2    x=-2

B. f(x) = x^2 - 4x - 5

h = - -4/2*1 = 4/2 =2  x=2  not -2

C. f(x) = x^2 + 6x + 2

h =  -6/2*1 = -3/2 =  x=-3/2  not -2

D. f(x) = -2x^2 - 8x + 1

h = - -8/2*-2 = 8/-4 =-2  x=-2  

E. f(x) = -2x^2 + 8x - 2

h = - 8/2*-2 = -8/-4 =2  x=2  not -2

7 0
3 years ago
Which statement comparing x² + 10 and x + x + x is true when x=−5 ?
Lina20 [59]
X^2 + 10 = 35 when x = -5
x + x + x = 3x = -15 when x = -5.

The answer is B because part A just restates the first equation, and Part C determines which is greater. If you want to determine the difference between the two when x = -5, part B is the best answer because it subtracts the product of one of them from the other.
3 0
3 years ago
Where is the hundred thousand place
ozzi
The 6th to the left

4 0
2 years ago
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