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Elena L [17]
3 years ago
13

Combine these to like terms to create an equivalent expression: 4z - (-3z)

Mathematics
1 answer:
inysia [295]3 years ago
5 0

Answer:

7z

Step-by-step explanation:

4z-(-3z)

4z+3z->double neg=addition

7z

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Help me on this please.
frosja888 [35]


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8 0
2 years ago
Let f(x)=x^2 and g(x)=x-2. Find (fog)(-3).​
Mnenie [13.5K]

Answer:

7

Step-by-step explanation:

(x-2)^2

x^2-4x+4

-3^2-4(-3)+4=7

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3 years ago
What are the roots of the equation? x^2−x−42=0 Enter your answers in the boxes. x = and x =
Natasha_Volkova [10]
Your roots are x=7 and x=-6
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Read 2 more answers
A bag contains 6 red marbles, 10 white marbles, and 7 blue marbles. You draw 4 marbles out at random, without replacement. What
Lapatulllka [165]

Answer:

3/1771

Step-by-step explanation:

Probability is the chance or likelihood that an event will occur.

Probability = expected outcome/total outcome

Total outcome = total number of marbles

Total outcome = 6+7+10 = 23marbles

If four marbles are drawn, the probability that they are all red is expressed as;

Pr(picking the first red marble) = 6/23

Since it is without replacement, the total marble becomes 22

Pr(picking the second) = 5/22

Pr(picking the third marbles = 4/21

Pr(picking the 4th marble) = 3/20

Note that the number of red marbles keep reducing and the total marble keep reducing as well.

Pr(picking the 4marbles) = 6/23×5/22×4/21×3/20 (we multiplied because or is an independent events)

Pr(picking the 4marbles) = 360/212520

Pr(picking 4 red marbles) = 72/42504 =36/21,252

= 9/5313

= 3/1771

Hence the probability of picking 4 marbles at random without replacement is 3/1771

4 0
3 years ago
Sally's cat is stuck in a tree 18 ft off the ground. The base of a ladder is placed 6 feet away from the base of the tree. What
tigry1 [53]

 C) 19ft is the correct answer


3 0
3 years ago
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