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djyliett [7]
2 years ago
8

John can mow the golf course in 7 hours Larry can mow it in five hours form a rational equation that can be used to determine ho

w long it would take to mow the golf course in if they work together

Mathematics
1 answer:
Anton [14]2 years ago
4 0
See attached formula:
Time = (7 * 5) / (7+5)
Time = 35 / 12
Time = <span><span><span>2.9166666667 </span> Hours
</span> </span>

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A penny has a mass of 3 grams. what is the mass in grams of 8 pennies ?
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Multiply
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3 years ago
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The median number of magazine appearances made by 7 models is 5. The range of number of magazine appearances by those models is
sattari [20]

Answer:not enough information

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7 0
3 years ago
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Explain answer ! <br><br> Will give brainlst
Ne4ueva [31]

Answer:

x = 4, y = 2

Step-by-step explanation:

Start by multiplying the first equation by 2:

2x + 2y = 12 --> 4x + 4y = 24

Subtract the second from the first:

   4x + 4y = 24

-   5x + 4y = 28

4x - 5x = -x

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24 - 28 = -4

so you end with -x + 0 = -4

Solve for x to get x = 4

Plug x = 4 back into 2x + 2y = 12 to find y.

2(4) + 2y = 12

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2y = 4

y = 2

5 0
3 years ago
How would I solve this?
trasher [3.6K]

You had the right idea using the Pythagorean theorem to solve for b.

Problem is for that triangle to work, the 5 and the 2√2 would have to switch places. The length of a leg cannot be larger than the length of the hypotenuse for it to truly be a right triangle.

Pythagorean theorem only works for the right triangles. Only way to "solve this problem would be to bring in complex numbers.

5² + b² = (2√2)²

25 + b² = 2²(√2)²

25 + b² = 4(2)

25 + b² = 8

b² = 8 - 25

b² = - 17

b = √-17

b= (√17i)

Then the problem with THIS is a measurement/distance cannot be negative... which goes against exactly what that complex number i is.

8 0
3 years ago
Please help I am confused will give brainly. Not sure how to find the measurements of 2, 3 and 4
antiseptic1488 [7]

Answer:

2: 99° 3: 81° 4: 81°

Step-by-step explanation:

2 is supplementary to 1 so subtract 81 from 180 = 99.

3 is vertical angle with 1 so they are equal

4 is alternate interior angle with 3 so they are equal

hope this helps stay safe :)

4 0
3 years ago
Read 2 more answers
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