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3 years ago

Anica says that she can rewrite ANY subtraction problem as an addition problem. Is she correct? Explain how you know!

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

3 0

Yeah i think so because
5-2=3
3+2=3
?

70-20=50
50+20=70
idek

Digiron [165]3 years ago

3 0

I think it’s true because of family pyramids or whatever they’re called. Like 6-2=4 can be rewritten as 4+2=6 or 2+4=6 if that makes sense :))

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A 5-month membership to the gym costs $125 jim would like to be a member for 8 months. What is the total amount he Will pay for

SCORPION-xisa [38]

Answer:

$200

Step-by-step explanation:

125/5=25

25 x 8=200

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3 years ago

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3 years ago

Read 2 more answers

Solve the triangle A=21 C=105 c=5

gregori [183]

Answer:

Granted that uppercase letters are the angles measurements and lowercase letters are the side lengths. I also was unable to round as I don't know to what decimal you need to round to.

First to find the measure of angle B, we must subtract A and C from 180

$180-21-105=54$

B=54

Next, we can use the law of sines in order to find the measures of a and b

As a reminder, The law of sines is

$\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

First, lets solve for b

$\frac{b}{sin54}=\frac{5}{sin105} \\\\b=\frac{(5)sin54}{sin105}\\\\b=4.187780119$

Next lets solve for a

$\frac{a}{sin21}=\frac{5}{sin105} \\\\a=\frac{(5)sin21}{sin105}\\\\a=1.85504901$

3 0

3 years ago

A triangle with equal sides and a square have the same perimeters. The length of a side of the triangle is 2x + 2. The length of

andreev551 [17]

Answer:

x=13

Step-by-step explanation:

$3(2x+2)=4(x+8)\\6x+6=4x+32\\2x+6=32\\2x=26\\x=13$

3 0

3 years ago

Find the angles of 22 and 24 thanks

netineya [11]

Answer:

22) 119

24) 15

Step-by-step explanation:

22) 61 + b = 180 <-- supplementary because on the same line

b = 119 <-- subtracted 61 from both sides

24) 87 + (6x + 3) = 180 <-- supplementary because on the same line

87 + 6x + 3 = 180 <-- take out parantheses

90 + 6x = 180 <-- add like terms

6x = 90 <-- subtracted 90 from both sides

x = 15 <-- solve for x by dividing 6 from both sides

6 0

3 years ago