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likoan [24]
2 years ago
6

Please help . I’ll mark you as brainliest if correct!

Mathematics
1 answer:
Alenkinab [10]2 years ago
7 0

Answer:  9/4 hours or 2.25 hours

Step-by-step explanation:

Sally paints 1/9 an hour and Steve paints 1/3 an hour both of them adding is 4/9 and 4/9 times 9/4=1 so it is 2.25 hours

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Penny is 100 centimeters tall. Jeremy is 38 inches tall. Who is taller
NNADVOKAT [17]
1 inch = 2.54 cm
100 cm * (1 inch)/(2.54 cm) = 39.37 inches
Penny is taller
4 0
2 years ago
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On top of a hill, a rocket is launched from a distance 80 feet above a lake. The rocket will fall into the lake after its engine
Free_Kalibri [48]
The maximum height is 144 feet.

The maximum height is the y-coordinate of the vertex.  To find the vertex, we first use x = -b/2a.  For our information, that is x=-64/2(-16) = -64/-32 = 2.

Now we substitute this into the equation:
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3 0
2 years ago
4/5 minus 1/3 plz i need help
IRISSAK [1]

Answer:

7/15

Step-by-step explanation:

Step 1

We can't subtract two fractions with different denominators. So you need to get a common denominator. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.

So we multiply 4 by 3, and get 12.

Then we multiply 1 by 5, and get 5.

Next we give both terms new denominators -- 5 × 3 = 15.

So now our fractions look like this:

12

15

−  

5

15

Step 2

Since our denominators match, we can subtract the numerators.

12 − 5 = 7

So the answer is:

7

15

Step 3

Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?

To find out, we try dividing it by 2...

Nope! So now we try the next greatest prime number, 3...

Nope! So now we try the next greatest prime number, 5...

Nope! So now we try the next greatest prime number, 7...

Nope! So now we try the next greatest prime number, 11...

No good. 11 is larger than 7. So we're done reducing.

6 0
2 years ago
I need help with finding the correct way of order of operations.
Alika [10]
I hope this helps you



6+4×2^3



6+4×8


6+32


38
5 0
3 years ago
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An online store store uses the following model to sell sneakers to its customers:
r-ruslan [8.4K]

Answer:

mark me brainlist for answer

Step-by-step explanation:

4 0
2 years ago
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