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3 years ago

Three less than seven times a number.

Mathematics

1 answer:

WITCHER [35]3 years ago

6 0

If x equals the number, then seven times the number is 7x; three less than that is 7x-3.

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75 people to 25 people

Nat2105 [25]

Percent decrease { (original number - new number) / original number....x 100

percent decrease : (75 - 25) / 75....x 100
50 / 75...x 100
0.666 x 100
66.6% decrease <==not sure if u need it rounded ?

4 0

3 years ago

Brad bought a used bike for $8 more than half of its original price. Brad paid $40 for the bike. What was the original price?

Viefleur [7K]

$\huge\boxed{\$64}$

Start by writing a formula, where $x$ is Brad's purchase price and $y$ is the original price.

$40=8+\frac{y}{2}$

Subtract $8$ from both sides.

$32=\frac{y}{2}$

Multiply both sides by $2$ .

$\boxed{64}=y$

7 0

3 years ago

Simplify: 3(a-2)+4(3-a)-10

Neporo4naja [7]

Answer:

-a - 4

Step-by-step explanation:

3(a-2)+4(3-a)-10

3a - 6 + 12 - 4a - 10

-a - 4

3 0

3 years ago

I WILL GIVE YOU 80 POINTS BUT I NEED IT TODAY ONLY NEED TO ANSWER SIX AND SEVEN

Viefleur [7K]

Hope this helps! Mark me Brainliest plsssss

3 0

1 year ago

7 line tshirt company manufactures t-shirts and sells them online.The company has a model where the cost C, in dollars to make x

bonufazy [111]

Answer:

The company must sell at least 2 shirts to break even.

Step-by-step explanation:

Cost:

The cost is given by the following equation:

$C = \frac{40}{30x+20} + 20 = \frac{4x}{3} + 20$

Revenue:

The revenue is given by the following equation:

$R = 15x$

How many t shirts must the company sell to break even?

Breakeven point is when the revenue is the same as the costs. So

$\frac{4x}{3} + 20 = 15x$

$15x - \frac{4x}{3} = 20$

$\frac{45x}{3} - \frac{4x}{3} = 20$

Multiplying everything by 3

$45x - 4x = 60$

$41x = 60$

$x = \frac{60}{41} = 1,...$

Since you cant make a decimal value of shirts

The company must sell at least 2 shirts to break even.

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7 0

3 years ago