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blsea [12.9K]
3 years ago
15

Solve each system of equations by adding, subtracting, or multiplying.

Mathematics
1 answer:
professor190 [17]3 years ago
3 0
Solve each system of equations by adding, subtracting, or multiplying.

1) 3x - 3y = -9
2x + y = -3

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Determine the value of s, the arc length (measured in inches) cut off in a circle with a radius of 3.4 inches by an angle with a
AleksandrR [38]

Answer:

Arc length s = 15.3 inches

Step-by-step explanation:

We know that length of an arc that subtends an angle θ radians at the center is given by

s=r\times \Theta

where

r is the radius of the circle

θ  is the angle subtended in radians

Thus applying values we get s=3.4\times \ 4.5radians

thus s = 15.3 inches

4 0
3 years ago
Greg is going to start a lawn mowing business and
Sladkaya [172]

Answer:

9.4 gallons of gas

Step-by-step explanation:

4×2.35=9.4

6 0
3 years ago
G(b) = 5b- 9 h(b) = (b - 1)^2 Evaluate. (hog)(-6) =
laiz [17]

Given:

The two functions are:

g(b)=5b-9

h(b)=(b-1)^2

To find:

The value of (h\circ g)(-6).

Solution:

We have,

g(b)=5b-9

h(b)=(b-1)^2

We know that,

(h\circ g)(b)=h(g(b))

(h\circ g)(b)=h(5b-9)

(h\circ g)(b)=[(5b-9)-1]^2

(h\circ g)(b)=[5b-10]^2

Putting b=-6, we get

(h\circ g)(-6)=[5(-6)-10]^2

(h\circ g)(-6)=[-39-10]^2

(h\circ g)(-6)=[-49]^2

(h\circ g)(-6)=2401

Therefore, the value of (h\circ g)(-6) is 2401.

7 0
3 years ago
Find the coefficient of the x7y2term in the binomial expansion of (x+y)^9
statuscvo [17]

Answer:

36

Step-by-step explanation:

first, see the formula in the attached picture.

now, by applying that formula we get :

the coefficient of the x7y2 is :

9C7 = 36  (you can either use a calculator or just the algebraic formula)

8 0
3 years ago
Joseph drives 125 miles in 2 1/2 hours. At the same rate , how far will he be able to travel in 6 hours ?
Mariana [72]

Answer:

Step-by-step explanation:

300 miles

125/2.5= 50 miles per hour

50*6=300

8 0
3 years ago
Read 2 more answers
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