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miskamm [114]
2 years ago
10

What is the shape of f(x)

Mathematics
1 answer:
KonstantinChe [14]2 years ago
8 0

f(x) is concave down on an interval I if all of the tangents to the curve on I are above the graph of f(x)

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A test is worth 100 points. The test is made up of 40 items. Each item is worth either 2 points or 3 points. Which matrix equati
lidiya [134]

Answer:

Total number of points in the test = 100

Total number of items in the test = 40

Let number of items of 2 points be x and number of items of 3 points be y.

Now, using the given information the situation can be represented by using the following equations :

⇒ x + y = 40 .........(1)

⇒ 2x + 3y = 100 .........(2)

The matrix equation is :

\begin{bmatrix}1 & 1\\ 2& 3\end{bmatrix}\cdot \begin{bmatrix}x\\ y\end{bmatrix}=\begin{bmatrix}40\\ 100\end{bmatrix}

By solving the equation (1) and equation (2), we get :

Solution : x = 20 and y = 20

4 0
3 years ago
Read 2 more answers
SOMEBODY HELP ME IM DESPERATE
garik1379 [7]

I believe it is the commutative property of multiplication. Commutative property is you can put the numbers in any order and it will have the same end result. I got multiplication because it is multiplication.

Hope this helps!



4 0
3 years ago
Read 2 more answers
you got a new credit card with an interest rate of 18% compounded monthly and no minimum payment. you go on a shopping spree and
just olya [345]
The total amount owed after 6 months will be found using the formula:
FV=P(1+r/100*n)^n
P=principle=$10000
r=rate=18%
n=terms=0.5


FV=10000(1+18/2*100)^0.5
FV=$10,440.30651
Thus the amount owed will be $10440.30651
7 0
3 years ago
Suppose that 5% of the time Todd attends a concert twice a month, 40% of the time he attends a concert once a month, and 55% of
alexira [117]
it’s the right answer anyways hope u pass all your classes thanks bye now purrr 1245/4849
3 0
3 years ago
Need help will give brainliest!!!!<br> answer Part A and B plzzz!!!
jek_recluse [69]

Answer:

Part A. C     Part B.  D

Step-by-step explanation:

Part A: First, if you know you want to have equal than or more than 78 then you know it goes on the right side of the inequality. Next, you have to pay attention to the inequality and remember it's meaning. !!!Remember!!!!

This: 10<11 means 10 is less than 11, or you can read it as 11 is greater than 10. Use that to choose between C and D.

Part B: This question requires you to solve the inequality and then construct a graph. You can easily take off A and C because you know you already have positive 13 sold and therefore your total will be positive.

So, solve the inequality to find C and reread the question so you remember the goal of this coat drive (remember the sign you used in Part A); once you do that you can choose between B and D.

4 0
2 years ago
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