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Nookie1986 [14]
3 years ago
7

- 2a + 5b - 3c + 2a + b

Mathematics
2 answers:
kifflom [539]3 years ago
6 0
The answer would be 6b-3c because a would cancel out and be 0
Svet_ta [14]3 years ago
6 0
(-2a+2a)=0
(5b+b)=6b
6b-3c
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(7y + 78) = (y + 10)
Artist 52 [7]

\text{Hello there!}\\\\\text{Solve for y:} \\\\7y + 78 = y + 10\\\\\text{Subtract y from both sides}\\\\6y+78=10\\\\\text{Subtract 78 from both sides}\\6y=-68\\\\\text{Divide both sides by 6}\\\\\\boxed{y= -34/3}

5 0
3 years ago
A train traveled a distance of 1 mile, or 5,280 feet, while climbing a hill at an angle of 5°.
Finger [1]
You can draw a right triangle where>

1) the distance traveled, i.e. 5280, is the hypotenuse

2) the opposite-leg is the vertical height that you need to calculate

3) the angle is 5°.

Therefore you can use the trigonometric ratio sine, which is:

sin(angle) = opposite-leg / hypotenuse = vertical height / distance traveled

= vertical height = distance traveled * sin (angle)

=> vertical height = 5,280 ft * sin(5°) = 460,18 ft

Answer: 460,18 ft
7 0
4 years ago
What is the sum of the polynomials? 11x^2-5 + x+4
liraira [26]

Answer:

11x^{2}+x-1

Step-by-step explanation:

we have

(11x^{2} -5) +(x+4)

we know that

The sum of a quadratic equation and a linear equation will be a quadratic equation

so

Combine like terms

(11x^{2})+(x)+(-5+4)

11x^{2}+x-1

5 0
4 years ago
Read 2 more answers
Number 23 please I need help
Y_Kistochka [10]

Answer:

A kite with a 100 foot-long string is caught in a tree. When the full length of the string is stretched in a straight line to the ground, it touches the ground a distance of 30 feet from the bottom of the tree. Find the measure of the angle between the kite string and the ground.

17°

27°

63°

73°

Step-by-step explanation:

8 0
4 years ago
Kevin was multiplying 1.5 by 0.1. Which statement is true about the product? A. It will be greater than 1.5. B. It will be less
Anastaziya [24]
The answer should be B because it turns to .15
5 0
3 years ago
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