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marshall27 [118]
3 years ago
15

How do I solve this problem?​

Mathematics
1 answer:
sammy [17]3 years ago
6 0

Answer:

Step-by-step explanation:

The first 2 pieces of this function agree at pi/4, so we will set them equal to each other and sub in pi/4 for x to solve for k:

ksin(\frac{\pi}{4})+(\frac{\pi}{4})^2=\frac{\pi}{4}+2 and

k(\frac{\sqrt{2} }{2})+\frac{\pi^2}{16}=\frac{\pi}{4}+2 and we'll multiply everything by 16 to get rid of the fractions. Doing that gives us:

8k\sqrt{2}=4\pi+32-\pi^2 and

k=\frac{4\pi+32-\pi^2}{8\sqrt{2} } so

k = 3.067

The next one is a bit tricky if you're not up on your natural log equations.

Again, we set these equal to each other because they meet at the value of e. We sub in e for x and solve for m:

x +2=mlne^x

We'll sub in e for x. ln of e to the x power is equal to x, so

e + 2 = me and

m=\frac{e+2}{e} so

m = 1.736

Hope that helps!

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Mark bought 12 boxes of paper clips and 10 packages of index cards for a
Nata [24]

Answer:

paper clips = $1.85

index cards = $3.95

Step-by-step explanation:

Mark

12 paper clips = x

10 index cards = y

$61.70 total

Janice

15 paper clips = x

7 index cards = y

$55.40 total

12x + 10y = 61.70

15x + 7y   = 55.40

*** you want to cancel out one of the letters

(12x + 10y = 61.70) * -7

(15x + 7y   = 55.40) * 10

-84x -70y = -431.9

150x + 70y = 554.0

150x + 70y = 554.0

-84x -70y = -431.9

66x + 0 = 122.1

66x = 122.1

x = 122.1 ÷ 66

x = 1.85

plug it back in

15(1.85) + 7y   = 55.40

27.75 + 7y   = 55.40

7y   = 55.40 - 27.75

7y = 27.65

y = 27.65 ÷ 7

y = 3.95

8 0
3 years ago
What is the answer?<br> 82.7(blank)<br> - 5.59<br> ----------
Goshia [24]
The answer will be 77.11
3 0
4 years ago
Read 2 more answers
If four out of ten people vote than a town with two hundred thousand people how many will vote
oksano4ka [1.4K]

Answer:

80,000 people will vote. I'm pretty sure

Step-by-step explanation:

You first divided 200,000 by 10 then multiply it by 4 and you get 80,000. You're welcome, if its right.

3 0
3 years ago
Read 2 more answers
Can you help me with this? thanks made it 20 points!
liraira [26]
I agree with Roaltyjess<span />
8 0
3 years ago
Consider this expression.
schepotkina [342]

Answer:

9m^2 + 17m- 9

Step-by-step explanation:

Given

7m^2 + (2m - 1)(m + 9)

Required:

Simplify

We start by opening the bracket

7m^2 + (2m(m + 9) - 1(m + 9))

7m^2 + 2m^2 + 18m - m - 9

Collect Like Terms

9m^2 + 17m- 9

Hence, the equivalent expression is 9m^2 + 17m- 9

5 0
3 years ago
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