3 years ago

Which expression is equivalent to

Mathematics

1 answer:

lapo4ka [179]3 years ago

6 0

The last one
2j^2/3k^4

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A lamp on a clearance table is marked at 70% off. If the regular price is $71.70, find the discount and the sale price.

lora16 [44]

Answer:

$21.51

Step-by-step explanation:

$71.70-70%=$21.51

7 0

3 years ago

Jane had 275 stickers, which she gave to her friends. Each friend got five more stickers than the friend before. If the first fr

Paha777 [63]

Answer:

10 friends

Step-by-step explanation:

we know that

The formula of the sum is equal to

$sum=\frac{n}{2}[2a1+(n-1)d]$

where

a1 is the first term

n is the number of terms (number of friends)

d is the common difference in the arithmetic sequence

In this problem we have

$sum=275\ stickers$

$a1=5\ stickers$

$d=5$ ----> the common difference

substitute in the formula and solve for n

$275=\frac{n}{2}[2(5)+(n-1)(5)]$

$550=n[10+5n-5]\\ \\550=10n+5n^{2} -5n\\ \\5n^{2}+5n-550=0$

Solve the quadratic equation by graphing

The solution is n=10

see the attached figure

therefore

She had 10 friends who got stickers

5 0

3 years ago

A chairman is to be randomly selected from six people: A, B, C, D, E, and F. Find the probability that B is not selected.

DIA [1.3K]

I’m not for sure but I think A

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3 years ago

Read 2 more answers

What is 2. 3/6 +1/6 +1 2/3

Kaylis [27]

3/6+1/6+1 2/3
Make 1 2/3 into an improper fraction:
5/3
Give them all common denominators by multiplying both sides of 5/3 by 2:
10/6
Then the question becomes:
3/6+1/6+10/6
Now you add the numerators and the denominator stays the same:
14/6
Now you can simplify by dividing both sides by 2:
7/3
Now you can make it a mixed number:
2 1/3

Hope this helps :)

8 0

3 years ago

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The sum of w and fourteen is five. What is the value of w?

dmitriy555 [2]

Answer:

-9

Step-by-step explanation:

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3 years ago