All categories

2 years ago

Please help I dont understand

Mathematics

1 answer:

irga5000 [103]2 years ago

6 0

Answer:

50 degrees

Step-by-step explanation:

By the Law of Cosines,

6² = 7.5² + 6.5² - 2(6.5)(7.5)cos C

6² - 7.5² - 6.5² = -2(6.5)(7.5)cos C

-62.5 = -97.5 cos C

cos C = (-62.5)/(-97.5) = 25/39

C = arccos(25/39), which is about 50°

You might be interested in

Calculate the slope of a line that goes through the points: (5, 7) & (2, 7). Leave your solution as a simplified (improper)

Fiesta28 [93]

Answer:

Step-by-step explanation:

m=(y2-y1)/x2-x1), if m is slope and the 2 points are (x1, y1), (x2, y2).

m=(7-7)/(2-5)

m=0/-3

m=0

also, you don't need to know this but if a line has a slope of zero it's a horizontal line

5 0

3 years ago

What are 2 possible values for x where x ≥ 6?

seropon [69]

Answer:

6-7-8-9-10-11-12-13-14-15 etc...

Step-by-step explanation:

any number that is equal to 6 or greater than 6 is a possible value for x.

5 0

3 years ago

What is 4 1/2 pint to quart?

Ivanshal [37]

There are two pints every quarter.

So let's convert pints to quarter

$\frac{4\frac{1}{2} }{2} =\frac{\frac{9}{2} }{2} = \frac{9}{4}$

There 4 1/2 pint is to 9/4 quarter.

Hope that helps!

p.s. look at my diagram to help you remember

5 0

2 years ago

Determine if the following scale factor would be an enlargement or reduction.<br> scale factor: 2.5

Sati [7]

Answer: Enlargement

Step-by-step explanation: If the number is larger than 1 it is an enlargement if it is smaller it is a reduction.

5 0

3 years ago

Read 2 more answers

Which of the following are solutions to | x-1|= 5x + 2 ? Check all that apply.

agasfer [191]

By definition of absolute value, if $x-1\ge0$ , then $|x-1|=x-1$ , so

$|x-1|=5x+2\implies x-1=5x+2\implies4x=-3\implies x=-\dfrac34$

On the other hand, if $x-1$ , then $|x-1|=-(x-1)=1-x$ , and

$|x-1|=5x+2\implies1-x=5x+2\implies6x=-1\implies x=-\dfrac16$

4 0

3 years ago