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finlep [7]
3 years ago
8

2) A pair of jeans costs $80. The store is having a sale for 30% off. What would

Mathematics
1 answer:
Viefleur [7K]3 years ago
7 0

Answer:

$56

Step-by-step explanation:

$80 x .3 = $24

$80 - $24 = $56

You can also do $80 x .7 = $56.

Hope that helps!

You might be interested in
The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial
GREYUIT [131]

Answer:

P(0) = 7,917

Step-by-step explanation:

The population of the community is given by the following formula:

P(t) = P(0)(1+r)^{t}

In which P(0) is the initial population and r is the growth rate.

The initial population P0 has doubled in 5 years.

This means that

P(5) = 2P(0)

Which lets us find r.

P(t) = P(0)(1+r)^{t}

2P(0) = P(0)(1+r)^{5}

(1+r)^{5} = 2

Applying the 5th root to both sides

1+r = 1.1487

r = 0.1487

So

P(t) = P(0)(1.1487)^{t}

Suppose it is known that the population is 12,000 after 3 years.

With this, we find P(0)

P(t) = P(0)(1.1487)^{t}

12000 = P(0)(1.1487)^{3}

1.5157P(0) = 12000

P(0) = \frac{12000}{1.5157}

P(0) = 7917

4 0
3 years ago
A tutoring company has offices where students physically attend a test prep course. The company recently created an online test
alexandr402 [8]

Answer:

Some of the 50 students should have been assigned to a control group that used the in-person course

Step-by-step explanation:

7 0
3 years ago
Evaluate the function.<br> f(x) = -22 – 3x + 3<br> Find f(7)
Artemon [7]
F(7)= -22 - 3(7) + 3
f(7)= -22 - 21 +3
f(7)= -40

Hope that helps!
3 0
3 years ago
The Waters family budget a maximum amount of $150 per week for groceries. Mr. Waters already spent $40. Write and solve an inequ
ivann1987 [24]

150-40 less than or equal to $110 -

They can spend less than or equal to $110

8 0
3 years ago
How many solutions does the following have?<br> 1x-5y=15<br> -1+5y=-15
zhannawk [14.2K]
So than there are 

1x -5y =15
-1x +5y = -15 
--------------------assuming term by term we get 
0    0      = 0

so from what result that this system has infinitely many solutions 

hope helped 


3 0
3 years ago
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