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charle [14.2K]
3 years ago
7

Find the angle whose cosine is .4203

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0
The cosine of 1.137020412 degrees is 0.4204.
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If f is a continuous function such that the integral from 1 to 4 of f of x, dx equals 10, evaluate the integral from 2 to 8 of 2
IgorLugansk [536]

Answer: 10

Step-by-step explanation:

Since integral from 1 to 4 of f(x) =10

To evaluate integral from 2 to 8 of 2 times f(2x), using substitution method

Let U = 2x, dU = 2dx, dx = dU/2

Evaluate the limit, upper limit gives dU = 2*4 = 8, lower limit gives dU = 2*1 = 2.

Since this limit are the same as the limit for the question,

Therefore, F(4) - F(1) = F(8) - F(2) = 10

Substituting dx=dU/2

Gives,

Integral from 2 to 8 of 2 times f(2x)= (1/2)(2)(F(8)-F(2)) = 10

6 0
3 years ago
Divide 36 books into two groups so the ratio is 5 to 7. (Use the double number line strategy)
lutik1710 [3]

A ratio of 5:7 means out of 12 books, 5 are in one category and 7 are in another. (The “category” isn’t specified in this problem.)


So here we’re STARTING with 36 books; we want to find a ratio that is equal to 5:7 and adds up to 36. Well 36 = 3(12), and so if we multiply each number in the ratio by 3 as well, we might get what we want. Doing that gives us 15:21, which adds up to 36 and is equal to 5:7. Boom, that’s the answer.


P.S. Here’s a question you can think about: why do ratios stay the same when you multiply each number by the same amount? (For example, why is 3:1 the same as 6:2?)

7 0
2 years ago
Question
Serggg [28]

Answer:

i think two months im not sure tho

Step-by-step explanation:

5 0
2 years ago
There are 16 boys and 19 girls in a class. The teacher calls the
san4es73 [151]

Answer:

1/12/2121 precent

Step-by-step explanation:

6 0
3 years ago
What is the value of the 5 in the number 7.522
joja [24]
Its 0.5. Which would be in fraction form 5/10 meaning its 5 tenths.
8 0
3 years ago
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