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kakasveta [241]
3 years ago
10

7/20+(-11/12) I I had 77/220 and that was wrong. I cant figure this out.

Mathematics
2 answers:
Lostsunrise [7]3 years ago
5 0
7/20 + (-11/12) = 
7/20 - 11/12 =
84/240 - 220/240 =
-136/240 reduces to -17/30
motikmotik3 years ago
3 0
The answer you put is wrong. It should be:

-17/30
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I need to simplify this
Korvikt [17]
Hi there!

3 \sqrt{54} + 2 \sqrt{24} =
First we split up the square root into two parts.

3 \times \sqrt{9} \times \sqrt{6} + 2 \times \sqrt{4} \times \sqrt{6} =
Now we calculate the value of the square roots which have an integer as a solution

3 \times 3 \times \sqrt{6} + 2 \times 2 \times \sqrt{6} =
Multiplying the integers gives us our next step.

9 \sqrt{6} + 4 \sqrt{6} =
And finally we add up the roots.

13 \sqrt{6}
3 0
4 years ago
Suppose sin(A) = 1/4. use the trig identity sin^2(A)+cos^2(A)=1 to find cos(A) in quadrant II. around to ten-thousandth.
larisa86 [58]

In quadrant II, \cos(A) will be negative. So

\sin^2(A) + \cos^2(A) = 1 \implies \cos(A) = -\sqrt{1 - \sin^2(A)} = -\dfrac{\sqrt{15}}4 \approx \boxed{-0.9682}

8 0
2 years ago
A bottle of perfume is spherical with a diameter of 36 mm.
Dafna11 [192]

24.4 mL

By converting mm to cm, we get

1 mm = 1/10 cm

18 mm = 18/10 cm

radius (r) = 1.8 cm

To find the volume,

Volume of sphere = 4/3πr3

= 4/3π(1.8)3

Volume = 24.4 cm3

To find the capacity,

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7 0
2 years ago
Will give crown will post more
marta [7]

Answer:

2, 7, 27, 42

Step-by-step explanation:

y = 5*1 -3 =2

y = 5*2 -3 =7

y = 5*6 -3 = 27

y = 5*9 -3 = 42

4 0
3 years ago
Read 2 more answers
(I'm helping someone else) Is a triangle with sides of length 6 ft., 21 ft., 23 ft. a right triangle? Show how you know.
MaRussiya [10]
This is not a right triangle.

4 0
3 years ago
Read 2 more answers
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