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3 years ago

Simplify 3+7x-(2+9x)

Mathematics

1 answer:

viva [34]3 years ago

8 0

Answer:

-2x + 1

Step-by-step explanation:

3 + 7x - (2 + 9x)

Distribute the negative:

3 + 7x - 2 - 9x

Combine like terms:

-2x + 1

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What is -0.4 as a fraction or mixed number in simplest form ?

netineya [11]

Answer:

-0.4=-(2/5)

-----------------------

0.4=0.1+0.1+0.1+0.1

=(1/10)+(1/10)+(1/10)+(1/10)

=(4/10)

=2/5

Therefore, -0.4=-(2/5)

5 0

4 years ago

Read 2 more answers

On Call 3.5 hours: $10 Talk Time 1/2 hours: $1.25 What is the unit rate in dollars per hour for each company?

mafiozo [28]

On Call's unit rate is about $2.86 per hour, since $10/3.5 hours= $2.86/1 hour
Talk Time's unit rate is about $2.50 per hour, since $1.25/0.5 hours= $2.50/1 hour

3 0

3 years ago

You design a new app for cell phones. Your revenue for x downloads is given by f(x) = 3x Your profit

Snowcat [4.5K]

Answer:

p = 2.7x - 20

p(90) = $223

Step-by-step explanation:

revenue → f(x) = 3x ,where x is the number of downloads.

the statement “Your profit p is $20 less than 90% of the revenue for x downloads”

means

$p=90\% f\left( x\right) -20$

means

$p=\frac{90}{100} \times f\left( x\right) -20$

means

$p=\frac{9}{10} \times (3x) -20$

means

$p=\frac{9}{10} \times (3x) -20$

means

$p=2.7x -20$

………………………………

the profit for 90 downloads :

= p(90)

= 2.7×(90) - 20

= $223

5 0

2 years ago

18 more than the product of k and 5 Evaluate the expression for the value of the variable, k : 7 Please type your answer in the

Nastasia [14]

Answer:

The Answer Is 125.

Step-by-step explanation:

As, 18 More Than K Means

18 More Than 7

So, It's 25

Then Evaluate 25 With 5

It's 25(5)

Or 25 × 5

It's 125.

4 0

3 years ago

What is the Absolute value of -6

DiKsa [7]

Answer:6

Step-by-step explanation:

5 0

3 years ago