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3 years ago

If mark got 6 questions out of 40 incorrect what percent of the questions did he get correct?

1 answer:

7 0

So if 6 out of 40 are incorrect, 40-6= 36 must be correct.
In order to gain percentage you do proportions.
36/40 = x/100.
Multiply 36 times 100 then divide by 40, which is 90.
The answer is 90%.
90% of the questions he got were correct.

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Which expressions are equivalent to the one below? Check all that apply. log2 16 + log2 16 A. log2(28) B. 8 C. log 256 D. log2 2

eduard

Answer:

B. 8.

D. log2 256.

Step-by-step explanation:

Generally:

loga b + loga b

= loga b^2.

Therefore log2 16 + log2 16

= log2 16^2

= log2 256.

From the above:

256 = 2^x where x is the log.

Now 2^8 = 256 so the original log2 16 + log2 16 = 8.

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3 years ago

Read 2 more answers

Given csc(A) = 60/16 and that angle A is in Quadrant I, find the exact value of sec A in simplest radical form using a rational

Katarina [22]

Answer:

$\displaystyle \sec A=\frac{65}{63}$

Step-by-step explanation:

We are given that:

$\displaystyle \csc A=\frac{65}{16}$

Where A is in QI.

And we want to find sec(A).

Recall that cosecant is the ratio of the hypotenuse to the opposite side. So, find the adjacent side using the Pythagorean Theorem:

$a=\sqrt{65^2-16^2}=\sqrt{3969}=63$

So, with respect to A, our adjacent side is 63, our opposite side is 16, and our hypotenuse is 65.

Since A is in QI, all of our trigonometric ratios will be positive.

Secant is the ratio of the hypotenuse to the adjacent. Hence:

$\displaystyle \sec A=\frac{65}{63}$

6 0

3 years ago

Read 2 more answers

Jean has 11 trees in her yard and Anita has 8. Write the ratio of trees in Anita's yard to trees in Jean's yard

Brilliant_brown [7]

Answer:

The ratio is 11:8

Step-by-step explanation:

There's 11 trees in Jeans yard hence the first number of the ratio (11)

While Anita has 8, hence the second number in the ratio (8)

Therefore the ration of Jean's trees to Anita's is 11:8

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2 years ago

800000 rounded to the nearest hundred thousand

stira [4]

Answer:

Step-by-step explanation:

I think you wouldnt round it because itss round but the nearest would be 700000 and 900000

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3 years ago

Which of the following represents a constant from the expression given? 15x^2+2x+9

mash [69]

Answer:

Step-by-step explanation:

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3 years ago