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k0ka [10]
3 years ago
15

Insert grouping symbols so that the given expression has a value of 25. 12 – 7 + 2 • 4 + 6

Mathematics
1 answer:
katovenus [111]3 years ago
4 0
(12-7)+2(4+6) is the one thats value is 25
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Let f(x) = cos(x) + 2x.<br> Where does f have critical points?
adell [148]

Answer:

<em>f</em> has no critical points.

Step-by-step explanation:

We are given:

f(x)=\cos(x)+2x

A function has critical points whenever its derivative equals 0 or is undefined.

Differentiate the function:

f'(x)=-\sin(x)+2

Since this will never be undefined, solve for its zeros:

0=-\sin(x)+2

Hence:

\displaystyle \sin(x)=2

Recall that the value of sine is always between -1 and 1.

Thus, no real solutions exist.

Therefore, <em>f</em> has no critical points.

6 0
3 years ago
When it is 4:00 a.m. in Honolulu, it is 2:00 p.m. in London. Just before Paul’s flight from Honolulu to London, he called his fr
timurjin [86]

Answer:

Paul should be wearing a light jacket appropriate for about 59 F or 15 °C

Step-by-step explanation:

If it is 4:00 a.m. in Honolulu when it is 2:00 p.m. in London, then the difference between times is:

d=14-4\\d=10\ hours

London is 10 hours ahead of Honolulu.

If Paul left Honolulu at 12:00 p.m, the corresponding time in London was:

t=12+10\\t=22 = 10:00\ p.m.

Since he arrived in London at 1:00 p.m. at Friday, the flight time was:

F= (24-22)+13\\F=15\ hours

The flight took 15 hours in total. If the temperature was 30°C when he boarded the flight and it decreases at a rate of 1°C per hour, the temperature when Paul arrives in London is:

T=30-(15*1)\\T=15^oC

Converting it to Fahrenheit

T=(15*\frac{9}{5})+32 \\T=59\ F

Paul should be wearing a light jacket appropriate for about 59 F or 15 °C

6 0
4 years ago
Decrease 1200 by 2% plzzzz
goldfiish [28.3K]
2% of 1200 is 48. Subtracting 48 from 1200 is 1152

3 0
3 years ago
PROJECT: PARTICIPATING IN THE ECONOMY
Pachacha [2.7K]

Answer:

mom- is a producer because she teaches, which provides a service

shes also a consumer because she buys groceries

dad- producer/hes a laywer which provides a service, consumer/he pays the bills

sister- consumer/ she shops at the mall

7 0
3 years ago
Read 2 more answers
What is the difference of the polynomials? (m^2n^2-7)-(mn+4)
Vilka [71]

Answer: The difference is,

m^2n^2-mn-11

Step-by-step explanation:

Given expression is,

(m^2n^2-7)-(mn+4)

By distributive property,

m^2n^2-7-mn-4

Combine like terms( that have the same variables and powers ),

m^2n^2-mn-11

Which is the required result.

Hence, option third is correct.

4 0
3 years ago
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