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OverLord2011 [107]
2 years ago
12

The reciprocal of 2 1/7 is what ?

Mathematics
2 answers:
aivan3 [116]2 years ago
6 0

Answer:

7/15.

Step-by-step explanation:

2 1/7 = 15/7

Reciprocal of 15/7 = 1  / 15/7

= 7/15.

Phantasy [73]2 years ago
5 0

Answer:

7/15

Step-by-step explanation:

2 1/7 is mixed fraction, if you turn it into a improper fraction, you will get 15/7. Just flip those two numbers, and you get the answer

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I really need help with this one please help me thank you​
sveta [45]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
What is the weight, in Newtons, of a person on Earth whose mass is 90 kilograms? Gravity near the Earth's surface is 9.8 m/s2.
valentinak56 [21]

Answer:

W = 882 N

Step-by-step explanation:

Given that,

The weight of a person, W = 90 kg

The value of acceleration due to gravity, g = 9.8 m/s²

We need to find the weight of the person on Earth. The formula for the weight of an object is given by :

W = mg

Substitute all the values,

W = 90 kg × 9.8 m/s²

W = 882 N

So, the weight of the person is equal to 882 N.

8 0
3 years ago
The perimeter of a triangle is 510 feet and the sides are in the ratio of 11:16:24. Find the area of the triangle
Nutka1998 [239]

If the sides are in the ratio of 11:16:24, it means that they are all multiples of a same number x, according to these factors.

So, the shorter side is 11x feet long, the middle one is 16x feet long, and the longest side is 24x feet long.

This means that the perimeter is

11x+16x+24x = 51x feet long. But we know that this is 510 feet, so we have

51x = 510 \implies x = \cfrac{510}{51} = 10.

So, the three sides are 110, 160 and 240 feet long.

To find the area of a triangle knowing its three sides, you can use Heron's formula, which states that, if s is half the perimeter of the triangle whose sides are a,b,c, the area A is given by

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

In our case, s = 255, a = 110, b = 160, c = 240 so the formula becomes

A = \sqrt{255(255-110)(255-160)(255-240)} = \sqrt{255(145)(95)(15)} = \sqrt{52689375} \approx 7258.74

5 0
3 years ago
Solve for x: 7x + 15 = 38
oksano4ka [1.4K]
All you do is move all the terms that don't contain  " x " to the right side and solve. 

x = \frac{23}{7}


Hope that helps, Good luck! (:
8 0
2 years ago
Read 2 more answers
Can someone help me please !
elena55 [62]
The reference angle is
pi/3.

At 180 it would be 9pi/3 so going past that is 10pi/3.

7 0
3 years ago
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