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gayaneshka [121]

2 years ago

10

Sam bought some apples at 60c each and sold all but 5 of them at R1,00 each. If he made a profit of R5,00, how many apples did h

e buy?

1 answer:

ivann1987 [24]2 years ago

4 0

Answer:

5

Step-by-step explanation:

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I am less than 100. I am an even number. I am a multiple of 5. I am divisible by three. The sum of my digits is an even number.

aliina [53]

It is 60
Hope this helped!!

7 0

3 years ago

Suppose sin(A)=-0.78. use the trig identity sin^2(A)+cos^2(A)=1 and the trig identity tan(A) = sin(A)/cos(A) to find tan(A) in q

Paladinen [302]

In quadrant IV, $\cos(A)$ is positive. So

$\sin^2(A) + \cos^2(A) = 1 \implies \cos(A) = \sqrt{1-\sin^2(A)} \approx 0.6258$

Then by the definition of tangent,

$\tan(A) = \dfrac{\sin(A)}{\cos(A)} \approx \dfrac{-0.78}{0.6258} \approx \boxed{-1.2465}$

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2 years ago

An employee worked for 8 hours on 2 days, 6 hours on 1 day, and 4 hours on 2 day

choli [55]

Answer:

A) 6.0

Step-by-step explanation:

First, total amount of hours, since average is sum of the numbers by how many numbers there is.

Day 1=8x2 hr

Day 2=6x1 hr

Day 3=4x2 hr

which is, 16+6+8=30

then divide 30 by how many days there is, which is 5 days.

30/5=6

5 0

2 years ago

Prove the identity with steps.

Sav [38]

Remember that a double angle formula for cosine is
$\cos(2x)=\cos^{2}x-\sin^{2}x$

So
$\cos^{2}(2x)-\sin^{2}(2x)=\cos(4x)$
$\rightarrow \cos^{2}(2x)-\sin^{2}(2x)=\cos(2*2x)$
$\rightarrow \cos^{2}(2x)-\sin^{2}(2x)=\cos^{2}(2x)-\sin^{2}(2x)$

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3 years ago

Which expression is equivalent to 46 - 2x)?

andrew-mc [135]

Answer:

24-8x

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers