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3 years ago

Pls this is timed thank you

Mathematics

2 answers:

mihalych1998 [28]3 years ago

6 0

Answer:

Step-by-step explanation:

$\frac{4}{Sin25*} = \frac{x}{Sin90*}$

$\frac{4Sin90*}{Sin25*} = x$

$x=\frac{4}{sin25*}$

$x=9.46480\dots$

$x=9$

statuscvo [17]3 years ago

4 0

I believe that is Khan academy from what I can see so no no I don’t believe it is timed, they do know all the timings but that won’t affect the score

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Need help on 6. 7. 8. 9. 10.

Alex17521 [72]

Answer:
6. Quadrant 3
7. Quadrant 1
8. Quadrant 4
9. Quadrant 2
10. They will be the same thing. It is a parallelogram so opposite angle are equal.

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3 years ago

A bookcase has two shelves. The top shelf has 10 more than 1/3 the number of books on the bottom shelf. There are 12 books on th

kobusy [5.1K]

Answer: b.14

Step-by-step explanation:

We have two shelves, the top shelf $s_{t}$ and the bottom shelf $s_{b}$ .

Now, firstly we are told the top shelf has 10 more than 1/3 the number of books on the bottom shelf. This can be expressed as:

$s_{t}=10+\frac{1}{3}s_{b}$ (1)

Then, we are told there are 12 books on the bottom shelf:

$s_{b}=12$ (2)

Substituting (2) in (1):

$s_{t}=10+\frac{1}{3}(12)$ (3)

$s_{t}=10+\frac{12}{3}$ (4)

$s_{t}=14$ (5) This is the number of books on the top shelf

Hence, the correct option is b.

6 0

3 years ago

Which describes the association between variables x and y ?

e-lub [12.9K]

A strong positive

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8 0

3 years ago

The base of a triangle is 5/8 ft. The height is 1/3 ft.

Ierofanga [76]

5/8÷1/3=5/8×3/1
(multiply by reciprocal instead of dividing)
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3 0

3 years ago

F(x) = 1/x g(x) = x - 4 Can you evaluate (gof)(0)? Explain why or why not.

s344n2d4d5 [400]

(gof)(0) cannot be evaluated

Solution:

Given that,

$f(x) = \frac{1}{x}\\\\g(x) = x - 4$

A composite function is denoted by (g o f) (x) = g (f(x)).

The notation g o f is read as “g of f”

Therefore, let us find whether (gof)(0) can be evaluated or not

To find (gof)(0):

(g o f) (x) = g (f(x))

Now substitute the given value of f(x)

$(g o f) (x) = g(\frac{1}{x})$

$\text{ Substitute } x = \frac{1}{x} \text{ in } g(x) = x - 4$

$(g o f) (x) = \frac{1}{x} - 4$

Now to find (gof)(0), substitute x = 0

$(g o f) (x) = \frac{1}{0} - 4$

Since 1 divided by 0 is undefined, because any number divided by 0 is undefined

(gof)(0) cannot be evaluated

6 0

3 years ago

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