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3 years ago

I neeeddd help please!!!!?

Mathematics

2 answers:

Charra [1.4K]3 years ago

8 0

Answer: FALSE

Step-by-step explanation: -9 Multiplied By -9 Is Positive 81. 4+3=7 7 Is Not Greater Than 81. Therefore, This Inequality Is False.

White raven [17]3 years ago

8 0

Answer: False

Step-by-step explanation:

Simplfiy:

3+4=7

(-9)(-9)=81 because two negative numbers multiplied equals a positive number

7>81

False

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3 years ago

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(3x + 3x²) + (2x² + 2x)?

Galina-37 [17]

Answer:

=5x2+5x

Step-by-step explanation:

Let's simplify step-by-step.

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3 years ago

Part of the proceeds from a garage sale was $470 worth of $10 and $20 bills. If there were 14 more $10 bills than $20 bills, fin

Brums [2.3K]

There are 25 $10 bills and 11 $20 bills.

Step-by-step explanation:

Given,

Worth of proceeds from garage = $470

Let,

x be the number of $10 bills

y be the number of $20 bills.

According to given situation;

10x+20y=470 Eqn 1

x = y+14 Eqn 2

Putting value of x from Eqn 2 in Eqn 1

$10(y+14)+20y=470\\10y+140+20y=470\\30y=470-140\\30y=330$

Dividing both sides by 30

$\frac{30y}{30}=\frac{330}{30}\\y=11$

Putting y=11 in Eqn 2

$x=11+14\\x=25$

There are 25 $10 bills and 11 $20 bills.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

5 0

3 years ago

Kayleigh has a spinner with sections labeled A‒E. All sections are the same size. She spins it 20 times with outcomes as follows

antiseptic1488 [7]

I think the answer is B

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3 years ago

The temperature went from -12°F to 18°F. Which of the following expressions could be used to find how much the temperature chang

jeyben [28]

Answer:

4. 18-(-12)

Step-by-step explanation:

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3 years ago