3 years ago

Calculate the value of the expression (Explain in words) -30-(-20)

Mathematics

1 answer:

oee [108]3 years ago

8 0

Answer:

-10

Step-by-step explanation:

when you subract a negative the minus signs negate each other

You might be interested in

After Hillary realized her clock was running 30 minutes fast, she used a knob on the clock to turn the minute hand back 30 minut

Svetlanka [38]

30 minutes is half the clock face, 180 degrees.

Forward is clockwise on a clock so backwards is counterclockwise.

180 degrees counterclockwise rotation

3 0

4 years ago

Read 2 more answers

What is the first step in solving the equation ģx+3x+2 = 57

Svet_ta [14]

Answer:

its Combine like terms sorry the answer is kind of late

Step-by-step explanation:

4 0

3 years ago

What is the answer to 3 1/2 - 2 1/8

DerKrebs [107]

Answer:

$Exact form:\\\frac{11}{8} \\Decimal form:\\1.375\\Mixed number form:\\1\frac{3}{8}$

Step-by-step explanation:

hope this helps

4 0

4 years ago

Read 2 more answers

Can you please solve the following equation?

AlladinOne [14]

Answer:

x=3.903

Step-by-step explanation:

$2^{x-3}.5^{x-1}=200\\2^x.2^{-3}.5^x.5^{-1}=200\\\frac{2^x}{2^3}.\frac{5^x}{5^1}=200\\\frac{2^x.5^x}{2^3.5}=200\\\frac{(2.5)^x}{8.5}=200\\10^x=200 \times 40\\10^x=8000\\log 10^x=log8000\\x=\frac {log8000}{log10}=log8000=log 8\times log1000=log 8+log 1000=log2^3+log10^3=3log2+3log10=3log2+3 \approx0.903+3 \approx3.903$

7 0

3 years ago

Which is a solution to the equation 15a = 225?

Aleks04 [339]

The purpose is to isolate A

to do this, divide both sides by 15

4 0

3 years ago

Read 2 more answers