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Aloiza [94]
3 years ago
13

Evaluate: 3 (2m + 5) +2 (3 – m) when m= =4

Mathematics
2 answers:
bija089 [108]3 years ago
5 0
I believe the answer is 37
jekas [21]3 years ago
4 0
Answer:

5

Steps and Explanation:

m = -4 - You just need to plug this into the m values to find your answer
3(2 x -4 + 5) + 2(3 - - 4) =
3(-8 + 5) + 2(7)
-9 + 14 = 5
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The graph of f(x) = 2x + 1 is shown below. Explain how to find the average rate of change between x = 0 and x = 2.
maksim [4K]
The last description actually clarifies the given equation. The equation should be written as: f(x) = 2ˣ +1. The x should be in the exponent's place. 

The average rate of change, in other words, is the slope of the curve at certain points. In equation, the slope is equal to Δy/Δx. It means that the slope is the change in the y coordinates over the change in the x coordinate. So, we know the denominator to be: 2-0 = 2. To determine the numerator, we substitute x=0 and x=2 to the original equation to obtain their respective y-coordinate pairs.

f(0)= 2⁰+1 = 2
f(2) = 2² + 1 = 5

So, the slope is equal to:

Average rate of change = (5 - 2)/(2 - 0)
Average rate of change = 3/2 or 1.5
4 0
4 years ago
Read 2 more answers
Which pair of angle measures satisfy the condition sin J = cos K?
kipiarov [429]
Sin J = cos K
sin J = cos (90 - J)

So, K = 90 - J

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5 0
4 years ago
What is the answer to 20(x + 1) = 200
patriot [66]

Answer:

x = 9

Step-by-step explanation:

20x + 20 = 200

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6 0
3 years ago
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nancy spent 7/8 hour working out at the gym she spent 5/7 of that time lifting weights what fraction of an hour did sje spentld
Juli2301 [7.4K]

\frac{9}{56}\\ Fraction of hour was spent by NAncy in lifting weights

Step-by-step explanation:

Time spent at the gym by Nancy = \frac{7}{8}\,hour

Time spent at lifting weights =  \frac{5}{7}\,hour

What fraction of hour she spent in lifting weights?

Solving:

Fraction of hour she spent in lifting weights= Time spend at the gym-Time spent at lifting weights

Fraction of hour she spent in lifting weights=\frac{7}{8}\,hour-\frac{5}{7}\,hour

=\frac{49}{56}-\frac{40}{56}\\=\frac{49-40}{56}\\=\frac{9}{56}\\

So, \frac{9}{56}\\ Fraction of hour was spent by Nancy in lifting weights

Keywords: Word Problems involving Fractions

Learn more about Word Problems involving Fractions at:

  • brainly.com/question/1648978
  • brainly.com/question/1677114
  • brainly.com/question/605571

#learnwithBrainly

7 0
3 years ago
Sandra took 4 tests in math and her mean score was 18. I she scored 18, 22, and
Salsk061 [2.6K]

Answer:

15

Step-by-step explanation:

(18+22+17+x)/4=18

18+22+17+x=18×4

57+x=72

x=72-57

x=15

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