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3 years ago

5

If the difference when −15 is subtracted from a number is twice the difference when 24 is subtracted from the same number, what

is the value of the number?

1 answer:

kirill [66]3 years ago

4 0

Answer:

The number is 39

Step-by-step explanation:

Let the unknown number be <em>x</em>:

$(x-(-15))=2(x-24)\\x+15=2x-24\\39=x\\\therefore x=39$

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EastWind [94]

Y=-4 + 5 is your equation

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8 0

3 years ago

For the function f(x) = -x^3 + 2x^2 + x - 2

kaheart [24]

Answer:

Step-by-step explanation:

a)

$f(1)=-1^3+2*1^2+1-2=-1+2+1-2=0\\\\$

b)

Rationnel roots are divisor of -2: -1,1,-2,2

$f(-1)=-(-1)^3+2*(-1)^2+(-1)-2=1+2-1-2=0\\\\\begin{array}{c|cccc}&x^3&x^2&x&1\\---&---&---&---&---\\&-1&2&1&-2\\x=1&&-1&1&2\\&-1&1&2&0\\\\x=-1&&1&-2\\&-1&2&0\\---&---&---&---&---\\\end {array}\\\\\\f(x)=-x^3+2x^2+x-2=(x-1)(x+1)(-x+2)\\\\$

c) see picture

4 0

3 years ago

Is the rate of change of the function 5? On a coordinate plane, a line with positive slope goes through points (negative 2, 0) a

Rashid [163]

Answer:

C

Step-by-step explanation:

the slope is 2/3

4 0

4 years ago

Read 2 more answers

What is the value of the expression <br> –180<br> –5<br> 5<br> 24

CaHeK987 [17]

The answer is -5 because a negative times a negative is a positive.

8 0

3 years ago

Read 2 more answers

A pack of cinnamon-scented pencils sells for $5.00. What is the sales tax rate if the total cost of the pencils is $5.25?

IgorLugansk [536]

The sales tax rate is 5%

Given:
Sales price = 5.00
Total amount paid = 5.25

Sales tax value = Total amount paid - sales price
= $5.25 - $5.00
Sales tax value = $0.25
Sales tax rate = Sales tax / Sales price
<span> = 0.25/5 </span>
<span>Sales tax rate = 0.05 or 5%</span>

3 0

3 years ago