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Orlov [11]
2 years ago
7

A store owner paid $15 for a book. She marked up the price of the book by 40% to determine its selling price. What is the sellin

g price, in dollars, of the book?
\
Mathematics
1 answer:
densk [106]2 years ago
7 0

Answer:

the selling price is 21 dollars

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What is the solution set for the inequality x < -2 or x > 6
bija089 [108]

he solution set is

{ x ∣ x > 1 } .


Explanation

For each of these inequalities, there will be a set of

x

-values that make them true. For example, it's pretty clear that large values of

x

(like 1,000) work for both, and negative values (like -1,000) will not work for either.

Since we're asked to solve a "this OR that" pair of inequalities, what we'd like to know are all the

x

-values that will work for at least one of them. To do this, we solve both inequalities for

x

, and then overlap the two solution set

8 0
4 years ago
A bag contains yellow marbles in red marbles 65 in total. The number of yellow marbles is five more than four times the number o
antoniya [11.8K]

Answer: there would be 52 yellow marbles

Step-by-step explanation:

Ok we know that there is 65 marbles in total? Right? So then we’d take 65 and think, what could we divide this by and start guessing and estimating numbers. (I guessed 5, one because it’s divisible by 65, two there is 5 times more yellow marbles than red marbles.) So 5 divided by 65 is 13. But, in order to find the amount of yellow marbles, we need to subtract the whole number by the amount of red marbles. (So 65-13 =?) if you subtract that you get 52 yellow marbles.  :)

7 0
3 years ago
Marty is taking piano lessons. She is going to practice every afternoon. The 1st week she practiced for 11 minutes each day. The
defon

Answer:

m=7w+4

Step-by-step explanation:

<u>Linear Modeling</u>

It consist is setting up a linear relationship between two variables, given some experimental data. Only 2 points are needed to set up the equation of a line, but if more than 2 points are used, then the result should use statistical approaches like linear regression to find the best-fit line.

For the question at hand, Marty practices his piano lessons 11 minutes the week #1. It provides the first point (1,11). He practices 25 minutes per day on the third week. It gives us another point (3,25). This is enough to find the equation of a line. The general formula for a line, having two points (m1,w1) (m2,w2) is

\displaystyle m-m_1=\frac{m_2-m_1}{w_2-w_1}(w-w_1)

Let's plug in our values

\displaystyle m-11=\frac{25-11}{3-1}(w-1)

Simplifying:

m-11=7w-7

\boxed{m=7w+4}

3 0
4 years ago
The Khan family is constructing a backyard and needs your help with a design that will fit their budget. The backyard is in the
Nonamiya [84]

Answer:

2x1000=2000m

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Write all the numbers that will round to 330
grandymaker [24]

Answer:

229.6 229.7 229.8 229.9 330.1 330.2 330.3 330.4

Step-by-step explanation:

idk

8 0
4 years ago
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