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kenny6666 [7]
3 years ago
10

Please help me do this

Mathematics
1 answer:
ra1l [238]3 years ago
4 0
Sum of angles in a triangle is equal to 180
So you add the angle such that
13x+2+5x-7+3x-4=180
21x-9=180
21x=189
X=189/21
X=9
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How to convert angle measure from degrees to radians?
Anestetic [448]
Multiply by 0.0174533

use whatever precision is appropriate.

for example 1 degree is equal to 1 × 0.017 radian
8 0
3 years ago
Solve the simultaneous equations<br> 2x+y=5<br> 5x+3y=12
Bezzdna [24]

Answer:

x=3 and y= -1

Step-by-step explanation:

Step 1: Solve2x+y=5 for y:

2x+y=5

2x+y+−2x=5+−2x(Add -2x to both sides)

y=−2x+5

Step 2: Substitute−2x+5foryin5x+3y=12:

5x+3y=12

5x+3(−2x+5)=12

−x+15=12(Simplify both sides of the equation)

−x+15+−15=12+−15(Add -15 to both sides)

(Divide both sides by -1)

x=3

Step 3: Substitute3forxiny=−2x+5:

y=−2x+5

y=(−2)(3)+5

y=−1(Simplify both sides of the equation)

Answer:

x=3 and y=−1

5 0
3 years ago
A group of veterinary researchers plan a study to estimate the average number of enteroliths in horses suffering from them. The
docker41 [41]
The answer to this is d
6 0
4 years ago
Rashawn puts $550 in an account earning 8% simple interest annually. How much will he have in his account after 6 years? i need
Aloiza [94]
It’s funny cause I have a friend named Rashawn
But y intercept would be 550 then multiply 8 by 6to get 48
So your answer should be $598 in 6 years
3 0
3 years ago
dillon pays x dollars to get a haircut. he gives the stylist a 15% tip. the expression representing his total cost is x + 0.15x
bagirrra123 [75]

Answer:

B) 1.15x, adding 15% to the cost of haircut is same as to multiply cost by 1.15

Step-by-step explanation:

Given expression = x + 15% of x

x + (15/100) x = x + 0.15x

= (1+ 0.15) x = 1.15x

15% = 0.15 , added to x = 1.15x

4 0
3 years ago
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