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3 years ago

What is the sign of −4ab when a > 0 and b < 0 *need NOW

Mathematics

2 answers:

My name is Ann [436]3 years ago

6 0

Answer:

The sign is positive.

Step-by-step explanation:

-4 is being multiplied by a negative and a positive number. The positive has no affect, but the negatives cancel out.

zhuklara [117]3 years ago

4 0

Answer: The sign is positive.

Step-by-step explanation:

a > 0 and b < 0

So, a·b < 0

⇒ -4·a·b > 0

⇒ -4·a·b - 4·a·b > 0

Hence, the sign will be positive

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At noon, the high temperature was 54 degrees. During the course of the day, the temperature increased 8 degrees, decreased 3 deg

pychu [463]

Answer:

Step-by-step explanation:

Let's write out what we know:

Noon temp: 54

Over the day, the temperature:

increased 8, decreased 3, increased 14, decreased 2, and decreased 10.

54+8-3+14-2-10 = 61

7 0

3 years ago

2(5x+3) ? what is the question

Delicious77 [7]

Hey there!

“2 (5x + 3)”

• FIRST and ONLY STEP: DISTRIBUTE 2 to ALL OF YOUR NUMBERS in the parentheses

2(5x) + 2(3)

2(5x) = 10x ⬅️ FRONT number

2(3) = 6 ⬅️ BACK number

BOTH OF YOUR NUMBERS ARE POSITIVE SO WE DON’T HAVE TO CHANGE ANYTHING

Answer: 10x + 6 ☑️

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

3 0

3 years ago

Read 2 more answers

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zysi [14]

Hey there we cannot see the question :D Sorry about that I would answer but I cannot!

3 0

3 years ago

What is the value of the expression below?<br> (9-3)+4(6-7)<br> OOOO

allsm [11]

Answer:2

Step-by-step explanation:

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3 years ago

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which number would be equivalent to the expression: 3 times 4 to the second power plus 6 divided by 2

otez555 [7]

The given expression is equivalent to the number 147.

We have given that,

$(3\times4)^2+\frac{6}{2}$

We have to determine the value of the given expression.

<h3>What is the expression?</h3>

An expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

$=(12)^2+\frac{6}{2} \\=144+3\\=147$

Therefore the given expression is equivalent to the number 147.

To learn more about the expression visit:

brainly.com/question/723406

#SPJ1

7 0

2 years ago