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Anuta_ua [19.1K]
2 years ago
13

F(x) = 4x^2 - 10.3 + 2 2 Find f(-7

Mathematics
1 answer:
Whitepunk [10]2 years ago
7 0

Step-by-step explanation:

please mark me as brainlest

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Whts 2 + 2 ;-;..............
Katarina [22]

Answer:

i think it's 4

Step-by-step explanation:

 2

+2

-------

4

3 0
3 years ago
The cost of a pair of ice skates went from $200 to $140. What is the percent change in the cost of skates?
dmitriy555 [2]

so the pair went down from 200 to 140, so the difference is 200 - 140 = 60.

so if we take 200 as the 100%, what is 60 off of it in percentage?

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 200&100\\ 60&x \end{array}\implies \cfrac{200}{60}=\cfrac{100}{x}\implies \cfrac{10}{3}=\cfrac{100}{x}\implies 10x=300 \\\\\\ x = \cfrac{300}{10}\implies x = 30

3 0
3 years ago
Find the retail price of a $24 hat with a markup of 40%
Amanda [17]
Retail price for a 24 dollar hat with a markup of 40% =

24 * .40 = 9.6

24 + 9.6 = $33.60 dollars
5 0
3 years ago
Solve the inequality x-4 < - 3.Then graph the solution set.show your work.
bearhunter [10]

Answer:

x < 1

Step-by-step explanation:

x - 4 < - 3

<u>  + 4    +4</u>                        Do inverse operations by adding 4 on both sides

    x < 1

Therefore, the answer is x < 1.

(It isn't allowing me to attach a photo but I am just going to try make a visual of the graph below)

<------------------------------o------------------>

-4    -3    -2    -1     0    1     2    3      4

The circle is open because based on the concept that in inequalities, <em>less/greater than and/or equal to (such as these ≥ ≤ )</em> signs are graphed with closed circles, while less/greater than (like these > <) signs are graphed with open circles. The direction of the arrow is moving to the left on the number line because all possible values for x would be less than 1. When graphing the inequality you would use a solid line rather than a dashed line (I had to improvise since I could not attach an image).

8 0
3 years ago
The answer and to understand
antoniya [11.8K]
Market 1: 3,90/10 = 0.390 $
market 2: 4,44/12= 0,37 $
best price in market 2
4 0
3 years ago
Read 2 more answers
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