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3 years ago

I’m confused on this one

Mathematics

1 answer:

Vinil7 [7]3 years ago

8 0

Here is a general rule for sin and cos

sin x = cos (90 - x)

cos x = sin (90 - x)

These rules are complementary, so for your problem

cos 75 = sin (90 - 75) = sin 15 as your answer.

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What scale factor was applied to the first rectangle to get the resulting image?

madam [21]

Answer:

The scale factor for the resultant rectangle is $\frac{2}{5}$ units.

Step-by-step explanation:

Given two rectangles with sides 3 units and 7.5 units.

We have to find the scaling factors so that we can obtain bigger rectangle of 7.5 units from smaller rectangle of 3 units.

Scale factor is defined as the ratio of corresponding side of given figure to the corresponding side of resulting figure.

That is $\text{Scale factor}=\frac{\text{length of side of given figure}}{\text{length of side of resulting figure}}$

Here, $\text{Scale factor}=\frac{\text{length of side of given rectangle }}{\text{length of side of resulting rectangle}}$

$\text{Scale factor}=\frac{3}{7.5}=\frac{2}{5}$

Hence, the scale factor for the resultant rectangle is $\frac{2}{5}$ units.

4 0

3 years ago

A company earns a profit of $100 the first month it is in business. Every month after that, the company earns a profit that is 1

Jobisdone [24]

Answer is $506.25.
first month is $100,
second month is 100 times 1.5 which is 150.
thirst month is 150 times 1.5 which is 225.
fourth month is 225 times 1.5 which is 337.5
fifth month is 337.5 times 1.5 which is 506.25

3 0

3 years ago

Which of the following describes a simple event

Ber [7]

Answer: c. getting heads on a coin toss and rolling a 5 on a die

Step-by-step explanation:

8 0

3 years ago

Please help me <br> Find f(-4)

Katyanochek1 [597]

As x < 3, you would use the equation $x^{2} -5$
Plus in -4 for X and you would get $(-4)^{2} -5$
$(-4)^{2}$ is equal to 16.
$16-5=11
$
$f(-4)=11$

5 0

3 years ago

Three years ago, Andy invested $7,000 in an account that earns 10% interest compounded annually.

Serggg [28]

Andy has $9317.00, to find your answer, do y=7000(1.10)^3 and you get 9317.

7 0

3 years ago