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balandron [24]
3 years ago
7

Marissa painted 1/2 of her bedroom and 3/4 ton an hour at this rate how long would it take her to paint the entire room A. 3/ 8

B. 8/3 C. 4/6 6/4​
Mathematics
1 answer:
Nikitich [7]3 years ago
7 0

Answer:

A. 3/8 of an hour

Step-by-step explanation:

if she is not a slacker

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An elevator descends into a mine shaft at the rate of 5 m/min. If the descend starts from 15m above the ground, by how long will
frez [133]

Answer:

Step-by-step explanation:

First we need to do 350 - 15 since 350 is our total and we already started at 15m.

Next divide the remainder (335) by 5 because that’s how fast we are moving, the final answer is 67 minutes.

8 0
3 years ago
Read 2 more answers
Add and Subtract the fractions below: 1/3 and 1/4
Alex

Addition Answer: 1/3 + 1/4 = 4/12 + 3/12 = 7/12

Subtraction Answer: 1/3 - 1/4 = 4/12 - 3/12 = 1/12

Step-by-step explanation:

Basically, find the greatest common multiple of 3 and 4.  Once you do this, then you can multiply across and solve any fraction problem!

6 0
2 years ago
the scale given on a road map is 1 cm equal 120 km what is the actual distance represented by 6 cm on the map​
elena55 [62]

Answer:

720

Step-by-step explanation:

6 x 120=720

Every 1 cm=120 km

So multiply both sides by 6 and you get

6 cm= 720 km

8 0
2 years ago
The function f(x) = 2x + 510 represents the number of calories burned when exercising, where x is the number of hours spent exer
riadik2000 [5.3K]

Answer: 789 calories burned while combining diet with 2 hours of exercise

Step-by-step explanation:

we have that

f(x)=2x+510

g(x)=200x-125

we know that

(f+g)(x)=f(x)+g(x)

substitute

(f+g)(x)=2x+510+200x-125

(f+g)(x)=202x+385

Find (f+g)(2)

For x=2 hours

substitute

(f+g)(2)=202(2)+385

(f+g)(2)=789\ calories

therefore

The answer is

789 calories burned while combining diet with 2 hours of exercise

8 0
3 years ago
Find the area of a triangle with a =33, b =51, and c =42.
PolarNik [594]

Answer:

d. 690.1 units²

Step-by-step explanation:

1. You can use the Heron's formula to calculate the area of the triangle, which is:

K=\sqrt{s(s-a)(s-b)(s-c)}

Where:

s=\frac{a+b+c}{2}

2. Calculate s:

s=\frac{33+51+42}{2}\\s=63

3. Substitute values into the formula shown above and calculate the area, as following:

K=\sqrt{63(63-33)(63-51)(63-42)}\\K=690.1units^{2}

4. Therefore, the area is 690.1 units².

4 0
3 years ago
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