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Alona [7]
3 years ago
12

PLS HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Sauron [17]3 years ago
4 0
1) integer
negative numbers are integers
2)6/11
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Let u = <-7, -2>. Find 4u.
Katena32 [7]

Answer:

a. <-28, -8>

Step-by-step explanation:

The given vector is

u = <-7, -2>.

To find 4u, we multiply the given vector by the scalar 4.

4u =4 <-7, -2>.

4u =<-7\times4, -2\times4>.

We multiply out to get;

4u =<-28, -8>.

The correct choice is a. <-28, -8>

8 0
3 years ago
Read 2 more answers
Express the following in their simplest ratios<br>a) 20:12<br>b) 25:12<br>c) 10:20​
tatiyna

Answer:

a) 5:3

b) 25:12

c) 1:2

Step-by-step explanation:

a) 20:12 = 20/12 = 10/6 = 5/3 = 5:3

b) 25:12 -> cannot be simplified so -> 25:12 itself

c) 10:20 = 1/2 = 1:2

3 0
3 years ago
Read 2 more answers
Marc has a total of $750 in his account. Every week he withdraws $50 to pay for his weekly expenses. After how many week will he
Sophie [7]

Answer:

after 10 weeks.

Step-by-step explanation:

750 - 50x = 250

-50x = 250 - 750

-50x = -500

x = -500/-50

x = 10

7 0
3 years ago
Read 2 more answers
A farmer finds that if she plants 50 trees per acre, each tree will yield 80 bushels of fruit. She estimates that for each addit
pashok25 [27]

Answer:

28

Step-by-step explanation:

From the given information:

Let x be the number of trees.

F(x) = (50 +x) (20 - 3x)

F(x) = 1000 - 150x + 20x - 3x²)

F(x) = -3x² - 130x + 1000

Differentiating F(x) with respect to x;

F'(x) = \dfrac{d}{dx}( -3x^2- 130x + 1000)

F'(x) = ( -3(2x)- 130(1) +0)

F'(x) = -6x -130

Now; we set F'(x) to be equal to zero to determine the critical value;

-6x - 130 = 0

x = - 130/6

Differentiating F''(x) with respect to x

F''(x) = \dfrac{d}{dx}( -6x- 130)

F''(x) = ( -6(1))

F''(x) = -6 (<0)

Thus; by the second derivative, the revenue function F(x) is maximum when x = -130/6

Therefore, the number of trees she should plant per acre to maximize her harvest is:

50 + x = 50 - 130/6

= 85/3

\simeq 28

Therefore, the number of trees per acre to maximize the harvest is 28

6 0
3 years ago
If your getting paid 5$ every week how long will it takes you to get 10,000$?
nikdorinn [45]
2,000
10,000 divided by 5 = 2,000
3 0
3 years ago
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