All categories

2 years ago

Choose the correct answer combination below.

Mathematics

1 answer:

Tresset [83]2 years ago

4 0

4; enlargement !! hope this helps

You might be interested in

The temperature is 5 degrees about 0 degrees. If it drops 8 degrees, what is the temperature after it drops?

ycow [4]

Answer:

-3

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

What is the solution to the equation -x^3-4=0.5x^2+x+4

Vedmedyk [2.9K]

Answer:

x = −2

Step-by-step explanation:

the steps are super long but this is the answer

4 0

2 years ago

Use a half-angle identity to find the exact value of tan 22.5°.

dusya [7]

Answer:

$\sqrt{2} -1$

Step-by-step explanation:

22.5 degrees is half of 45 degrees (special angle for which we know exactly the value of all three basic trigonometric functions (sine, cosine, and tangent).

So we start recalling the formula for tangent of a half angle: $tan(\frac{\alpha }{2} )= \frac{1-cos(\alpha) }{sin(\alpha) }$

We need just the values of:

$sin(\alpha )=sin(45^o)=\frac{\sqrt{2} }{2}$

and of

$cos(\alpha )=cos(45^o)=\frac{\sqrt{2} }{2}$

to answer the question. Then, we use those values in the original formula for tangent of a half angle:

$tan(\frac{\alpha }{2} )= \frac{1-cos(\alpha) }{sin(\alpha) }\\tan(22.5^o)=\frac{1-\frac{\sqrt{2} }{2} }{\frac{\sqrt{2} }{2}} =\frac{2-\sqrt{2} }{\sqrt{2} } =\frac{2\sqrt{2}-2 }{2} =\sqrt{2} -1$

3 0

3 years ago

Read 2 more answers

What percent of 125 is 55

DerKrebs [107]

100%/x%=125/55
(100/x)*x=(125/55)*x - we multiply both sides of the equation by x
100=2.27272727273*x - we divide both sides of the equation by (2.27272727273) to get x
100/2.27272727273=x
44=x
x=44 So your answer is 44 ^-^

6 0

3 years ago

Read 2 more answers

An isosceles triangle has a perimeter that measures 20 centimeters and a base that measures 7 centimeters. What is the length of

lana [24]

Answer:

6.5

Step-by-step explanation:

as both sides need to be equal 20-7/2

4 0

3 years ago

Read 2 more answers