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melamori03 [73]
3 years ago
12

Combine like terms. What is a simpler form of the expression? -3(-4y + 3) + 7y

Mathematics
2 answers:
myrzilka [38]3 years ago
8 0
The answer to this problem is 19y-9.
Yakvenalex [24]3 years ago
3 0
19y-9 is a simpler form of this expression. You can use distributive property to get rigid the brackets (multiply -3 by -4y and 3) , then your expression looks like 12y-9+7y. You then combine like terms to get 19y-9.
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For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 15 N acts on
netineya [11]

Answer:

27 N

Step-by-step explanation:

Since force varies directly with acceleration, we can introduce a constant, k, and write  F=ka

When force is 15, acceleration is 5, so plug it into the equation and solve for k:

F=ka\\15=k(5)\\k=\frac{15}{5}\\k=3

Now, to find force, we use a = 9 and k = 3, so

F=ka\\F=(3)(9)\\F=27

The force is 27 N

5 0
3 years ago
The distance between the two points (4,2) and (8,k) is 5 units. Find value(s)of k
Sliva [168]
D^2 = (x2 - x1)^2 + (y2 - y1)^2
d^2 = (8 - 4)^2 + (k - 2)^2
d = 5 so
5^2 = 4^2 + k^2 - 4k + 4
25 = 16 + k^2 - 4k + 4
25 = 20 + k^2 - 4k
0 = k^2 - 4k - 5
0 = (k - 5)(k + 1)
k has 2 answers
k - 5 = 0
k = 5
k + 1 = 0
k = - 1

The two answers are
(8, 5) and (8, -1) <<<< answer
5 0
3 years ago
3(x^2+2x-3)-4(4x^2-7x+5) is equivalent to
Harman [31]
Use photo math.........
7 0
3 years ago
Katie completes 2/3 of her craft project in 3/4 of an hour at this rate what fraction of the craft project does Katie complete i
trasher [3.6K]

Answer:

2/3 in 3/4 of an hour. that would mean u an extra 1/4 of an hour would give Katie the time to finish up the project

Step-by-step explanation:

Katie, take no breaks when u can get this done in an hour. don't be lazy

7 0
2 years ago
Find the measure of an angle whose measure is 20° less than the measure of its supplement.
Tasya [4]
Supplementary = angles add up to 180
Measure = 20 less

Labelled as x + (x - 20) = 180

Solve.

x + (x - 20) = 180
             2x = 200
             /2      /2
               x = 100

Angle 1:             Angle 2:
x - 20                  x
100 - 20             100
80

Therefore the angle is 80 degrees.

Proof: 80 + 100 = 180 (supplementary)
100 - 80 = 20 (80 is less than supplement (100)

Hope I helped :))))
3 0
3 years ago
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