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Dovator [93]
3 years ago
11

Evaluate 3/7r + 5/8s when r = 14 and s = 8.

Mathematics
1 answer:
Ahat [919]3 years ago
6 0
In this question, plug in 14 for r and 8 for s, which will look like 3/98 + 5/64. Solve, and you will get 0.109 = 0.11.
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PLEASE HELP!!!<br> If f(x) = -2x^2 + x - 5, what is f(3)?
kow [346]

Answer:

  • <u>f(3) = -10</u>

Step-by-step explanation:

<u>Given</u>

  • f(x) = -2x² + x - 5

<u>Solving</u>

  • To find f(3), substitute x = 3 in the function
  • ⇒ f(3) = -2(3)² + (3) + 5
  • ⇒ f(3) = -2(9) + 8
  • ⇒ f(3) = -18 + 8
  • ⇒ <u>f(3) = -10</u>
4 0
2 years ago
Read 2 more answers
Ellen says that 1 2/5 equal 5/7. Is she correct? Explain.
Akimi4 [234]

Answer:

no

Step-by-step explanation:

1 2/5 has a whole and a fraction where as 5/7 only has a fraction

3 0
3 years ago
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What kind of association is this, negative or positive?​
erik [133]

Answer:

negative association

Step-by-step explanation:

This diagram is a scatter plot which represents a set of data.  Data on a scatter plot can fit one of three descriptions:  positive (increasing), negative (decreasing) or no association (points do not form any kind of line).  Given this data and the line of best fit, or the line that pass through the majority of the points, it is a decreasing line.  Since the line goes downhill, it is a negative association.  

7 0
3 years ago
Me QR goes through points Q(0, 1) and R(2, 7). Which equation represents line QR?
maks197457 [2]

We write the equation in the form of directional.

y -1 = 6x               ⇔    y = 6x + 1

y - 1 = 3x              ⇔    y = 3x + 1

y - 7 = 2x - 6         ⇔    y = 2x - 6 + 7

                                    y = 2x + 1

y - 7 = x - 2           ⇔    y = x - 2 + 7

                                    y = x + 5

Equations cleverly arranged .

Point Q = (0,1)  

b factor , not only fits the last equation

In the drawing have engraved points Q and R are tangent linear function appropriate to that point . This graphics solution . y = 3x + 1

Answer b

We check choice by the system of equations , where substitute wartoćsi points Q and R to the model equations linear function

The result of equations confirmed our choice Answer b

3 0
2 years ago
Javian has a gift card with a $150 balance. He buys several video games that cost $35 each. After the purchases, his gift card b
SIZIF [17.4K]

Answer:

D

Step-by-step explanation:

150-35x=45

X in this equation would be 3

Take 35x3 and you get 105. Plug this in

150-105=45

hope this helps

5 0
3 years ago
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