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denpristay [2]
3 years ago
11

Jack and Jill are planting a garden together. If it takes Jack 8 hours on his own to plant the garden, and Jill 10 hours on her

own, how many hours would it take them if they work together
Mathematics
1 answer:
Sidana [21]3 years ago
8 0
It would take them 4-5 hours if they worked togethwr
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3. If the scale factor in a dilation is a number between 0 and
REY [17]

Answer: Reduction

Step-by-step explanation: If the scale factor of a dilation is between 0 and 1, the image will be smaller than the object, a reduction. It would only be an enlargement if the scale factor is greater than 1.

4 0
2 years ago
One number exceeds another by 1. the sum of the numbers is 21. what are the numbers
Cerrena [4.2K]
Try this solution:
1. if 1st number is 'x', the 2d number is 'y', then it is possible to make up the system of two equation according to the condition:
\left \{ {{x-y=1} \atop {x+y=21}} \right. \ =\ \textgreater \  \  \left \{ {{x=11} \atop {y=10}} \right.
2. one number is 11, another number is 10.
3 0
3 years ago
Use quadratic regression to find
Rashid [163]

The quadratic equation is given by:

y = 3x² + 10x - 8

The standard equation of a parabola is given by:

y = ax² + bx + c

Where a, b, c are constants

At point (4, 80):

80 = a(4)² + b(4) + c

16a + 4b + c = 80     (1)

At point (-3, -11):

-11 = a(-3)² + b(-3) + c

9a - 3b + c = -11     (2)

At point (-1, -15):

-15 = a(-1)² + b(-1) + c

a - b + c = -15     (3)

Solving equations 1, 2 and 3 simultaneously gives:

a = 3, b = 10, c = -8

Therefore the quadratic equation becomes:

y = 3x² + 10x - 8

Find out more on quadratic equation at: brainly.com/question/1214333

8 0
2 years ago
Challenge An airplane is preparing to land at an airport. It is 36,000 feet above the ground and is descending at the rate of 3,
Alona [7]

Step-by-step explanation:

I don't know the answer to this one so could someone please tell me

Thanks

7 0
3 years ago
Which ratio is equivalent to 1 to 8?<br> 7 to 14<br> 7 to 9<br> 6 to 41<br> 6 to 48
Ivan

6 to 48 simplified

it becomes 1 to 8

so the answer is 6 to 48

plz mark as brainliest

5 0
2 years ago
Read 2 more answers
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