2 years ago

I need help with 5th grade fractions

Mathematics

2 answers:

asambeis [7]2 years ago

6 0

What are the fractions

nirvana33 [79]2 years ago

4 0

Answer:

i can help

Step-by-step explanation:

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Shinto is serving pizza. He serves 1/5 of the pizza to one friend and 5/12 to another friend. If he had 9/10 of a pizza to start

never [62]

Answer: 17/60

Step-by-step explanation:

Change all of the fractions to have a common denominator:

LCM of 10, 12, 15 is 60

You get 12/60, 25/60, and 54/60.

54/60 is what he had at the start, and so you can just subtract what he gave away

54/60-12/60=42/60

42/60-25/60=17/60

17 is a prime number so you cannot simplify the fraction

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3 years ago

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Lines a and b are parallel.

GrogVix [38]

180 - 124 = 56
4x = 180 - (56 + 60)
4x = 180 - 116
4x = 64
x = 16

answer
B. 16

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3 years ago

Simplify<br><br>Square root of 50 over 2 times -4 + square root of 121

kobusy [5.1K]

Answer:

-9

Step-by-step explanation:

$\sqrt{\dfrac{50}{2}}\cdot(-4)+\sqrt{121}=-4\sqrt{25}+11=-4\cdot5+11\\\\=-20+11=\boxed{-9}$

Your calculator can help with this.

4 0

2 years ago

(1+sin y)(1+sin (-y))=cos^2 y)

Sloan [31]

$(1+siny)(1+sin(-y))=cos^2y\\\\L=(1+siny)(1-siny)=1^2-sin^2y=1-sin^2y=cos^2y\\\\R=cos^2y\\\\L=R$

$sin(-x)=-sinx\\\\sin^2x+cos^2x=1\to1-sin^2x=cos^2x\\\\(a+b)(a-b)=a^2-b^2$

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2 years ago

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Adding fractions with unlike denominators

hodyreva [135]

Multiply the 3 times 4. Then do the same on the top.

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3 years ago