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serious [3.7K]
3 years ago
8

If a =3 and b=-2,what does this expression equal? -2b-a

Mathematics
1 answer:
Elanso [62]3 years ago
8 0

Answer:

Step-by-step explanation:

we will replace the expression -2b-a  with the values

-2(-2)-3=4-3=1

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Step 1 :

Equation at the end of step 1 :

((6x + 3) - 2 • (x + 1)) + 5
Step 2 :

Step 3 :

Pulling out like terms :

3.1 Pull out like factors :

4x + 6 = 2 • (2x + 3)

Final result :

2 • (2x + 3)
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4 years ago
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<em>Step by Step, Following the rules of Pemdas</em>

<em>22 - (3.1 + 4.4) + 2.5</em>

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3 years ago
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If there are 1.5 times as many pairs of walking shoes as there are running shoes on display, then it is best to take each amount of running shoes and multiply it by 1.5, if doing that equals the amount of walking shoes, then it would be correct. Which in this case, would be D.
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A 17-year-old high school senior suddenly developed a high fever and chills, headache, stiff neck, and vomiting. His parents cal
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Answer:

Meningitis

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Meningitis is a inflammation of the membrane surrounding your brain and spinal cord.

In most cases it is caused by viral infection.

Some cases it improve without treatment in few days

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8 0
4 years ago
A student has 10 coins in her pocket that have a value of 0.85,The coins are either nickels of dimes. Which system of linear equ
oee [108]

Answer:

p+q = 10...... 1

0.05p+0.10q = 0.85 ..... 2

Step-by-step explanation:

The question is incomplete. Here is the complete question.

A student has 10 coins in her pocket that have a value of $0.85. The coins are either nickels or dimes. If each nickel costs $0.05 and each dime costs $0.10. Which system of linear equations represents this scenario?

Let the number of nickel in the pocket of the student be p

Let the number of dime in the pocket of the student be q

If there are 10 coins in her pocket, then the total coins in her pocket will be represented by the equation;

p+q = 10...... 1

If each nickel costs $0.05, p nickels will cost $0.05×p = $0.05p

If each dime costs $0.10, q nickel will costs $0.10×q = $0.10q

Total amount will be $0.05p+$0.10q

Now if the total coins in her pocket has a value of $0.85, then the we will equate $0.05p+$0.10q to $0.85 to give our second linear equation as:

$0.05p+$0.10q = $0.85 ....... 2

Therefore, the system of linear equations represents this scenario are:

p+q = 10...... 1

0.05p+0.10q = 0.85 ..... 2

7 0
3 years ago
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