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barxatty [35]
3 years ago
12

Need an answer asap!!!! a = 12, b = 5, and c = 4. 3c + bc - 2a

Mathematics
1 answer:
Serhud [2]3 years ago
6 0

Answer:

8

Step-by-step explanation:

3(4)+(5)(4)-2(12)

then solve

12+20-24=8

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In right triangle ABC, A=15°, C=37, and angle C is the right angle. Solve the triangle. Round to the nearest tenth, if necessaar
Mice21 [21]

Answer:

180 degrees

Step-by-step explanation:

The sum of the interior angles of a triangle is 180 degrees. Since angle C is 90 degrees and angle A is 15 degrees Then,

A+B+C=180

15+90+B=180

B=180-90-15

B=75 degrees

Using the sine law,

a/sinA = b/sinB = c/sinC

where a, b, and c are the sides of the triangle,

So,

a/sin15 = 37/sin90

and

b/sin75 = 37/sin90

Simplifying, and solving for a and b, the measure of each side is

a= 9.58 units

b=35.74 units

I hope this helped. I am sorry if you get this wrong.

5 0
3 years ago
To increase an amount by 85% what single multiplier would i need to use?
Brrunno [24]
The answer is 1.85

To figure this out, think about what we want. We want our original number plus 85% of the original number. The 1 part will give you back your original number, and the 0.85 part will add 85%.
3 0
4 years ago
When calculating simple interest, what must you do if you want to invest for months or weeks instead of years?
iVinArrow [24]

The formula for calculating the simple interest is given by

I=Prt

Here, P = Principle amount

r = annual interest rate in decimal

t = time in years.

Now, if we invest for months or week then in order to find the simple interest, we must convert the units in years.

Therefore, d is the correct option.

d) Interest rates are annual, so you must convert the units into years.

4 0
3 years ago
Read 2 more answers
(-17+2) - (2 × 4 - 2)²
ra1l [238]

Answer:

-51

Step-by-step explanation:

-17+2 is -15

2*4 is 8

8-2 is 6

6^2 is 36

-15--36 is 21

4 0
3 years ago
Read 2 more answers
A tree casts a shadow 60 feet long. At the same time, a nearby 8-foot post casts a 12- foot shadow. How tall is the tree?
Alborosie

9514 1404 393

Answer:

  40 ft

Step-by-step explanation:

The post is 8/12 = 2/3 as tall as the shadow is long. We expect the same relationship holds for the tree.

  tree height = (2/3)(shadow length) = (2/3)(60 ft) = 40 ft

The tree is 40 feet tall.

3 0
3 years ago
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