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Semenov [28]
3 years ago
13

Please help me on this TIA!!

Mathematics
1 answer:
tamaranim1 [39]3 years ago
8 0
50.24 hope it helps:)
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5x-2y=30 complete the missing solution to the equation​
astra-53 [7]

Answer:

I would have to go with x = 8 and y = 5, meaning the solution is (8, 5).

Step-by-step explanation:

5x - 2y = 30

5(8) - 2(5) = 30

40 - 10 = 30

30 = 30

4 0
2 years ago
Read 2 more answers
1. A ball's position, in meters, as it travels every second is represented by the position function s(t) = 4.9t2+ 450.
bezimeni [28]
1) The ball's position is described by:
s(t) = 4.9t² + 450
We want to find the velocity, which is the 1st-order derivative of the displacement function (I assume this is an introductory calculus class)
s'(t) = v(t) = 9.8t           
We get this by multiplying 4.9 x 2 and reducing the exponent by 1. Now we simply plug 5 in for t.
v(5) = 9.8* 5
v(5) = 49m/s

2) Our cost function is C(x) = x² - 10,000
To find the average rate of change between these units, we use this formula:
( C(101) - C(100) ) ÷1 .
We find the change in C, and divide by the change in x, which is just one. 
C(101) = 101² - 10,000
C(101) = 201

C(100) = 100² - 10,000
C(100= 0

C(101) - C(100) = 201 
Average rate of change in cost is 201 dollars/ unit between the two points. 
7 0
3 years ago
The manager of an electronics store projects that the store should achieve more than $21,000 in revenue from TVs and DVD players
Alina [70]

Answer:

380d + 530t > 21,000

Step-by-step explanation:

Each DVD costs $380, we can represent that as:

380d

Each TV costs $530, we can represent that as:

530t

We add these together to find the total profit:

380d + 530t

The manager predicts that whatever the total profit is, will be more than $21,000. So, we represent that as this:

380d + 530t > 21,000

And that is the final answer.

<em>I hope this helps!!</em>

<em>- Kay :)</em>

7 0
3 years ago
Please help me graph question
iogann1982 [59]

Answer:

Step-by-step explanation:

Put in the form of y = Ax + B

x + 2y = 10

2y = -x + 10

y = -½x + 5

has a slope of -½ and a y intercept of 5

-x + 4y = 8

4y = x + 8

y = ¼x + 2

has a slope of ¼ and a y intercept of 2

4 0
2 years ago
which option shows 18÷15 as a fraction or a mixed number? A. 2315 B. 1518 C. 11815 D. 1315
Marysya12 [62]

Answer:

It's B.) 1518

using fraction calculator**

As a positive improper fraction (numerator > denominator):

18/15 = 6/5

As a mixed number

(a whole number and a proper fraction, of the same sign):

18/15 = 1 1/5

As a decimal number:

18/15 = 1.2

As a percentage:

18/15 = 120%

Step-by-step explanation:

4 0
3 years ago
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