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bixtya [17]
3 years ago
9

What are the zeros of the quadratic expression 3x2 - 6x - 24?

Mathematics
1 answer:
sammy [17]3 years ago
7 0

Answer:

3(x−4)(x+2)

Step-by-step explanation:

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2x + 3x + 20 + 10x - 5 = 10x + 16
mel-nik [20]

Answer:x=1 /5

Step-by-step explanation:

6 0
2 years ago
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Describe the sequence of transformations that demonstrates the congruence between triangle ABC and triangle A´B´C´.
Shtirlitz [24]

Reflecting over the x axis means to perform the following tranformation:

(x,y) \to (x,-y)

So, you maintain the x coordinate, and change the sign of the y coordinate. The vertices become

A=(-4, 4)\to \hat{A} = (-4,-4),\quad B=(-2, 3)\to \hat{B} = (-2,-3),\quad C=(0, 7) \to \hat{C}=(0,-7)

Translating 3 units to the left means to perform the following transformation:

(x,y) \to (x-3,y)

So, you maintain the y coordinate, and decrease the x coordinate by 3. The vertices become

\hat{A} = (-4,-4) \to (-7,-4),\quad \hat{B} = (-2,-3)\to (-5,-3),\quad \hat{C}=(0,-7)\to (-3,-7)

So, as you can see, after these two transformation, the vertices A, B and C become A', B' and C'.

4 0
3 years ago
Two mechanics, Martin and Gordon, are working on your car. Martin can complete the work in 4 hours, while Gordon can complete th
ki77a [65]

Answer: 4/3 hours or 1 1/3 hours

Step-by-step explanation:

From the question, we are told that two mechanics, Martin and Gordon, are working on your car. Martin can complete the work in 4 hours, while Gordon can complete the work in 2 hours.

Since Martin can complete the work in 4 hours, that means in 1 hour, he will do 1/4 of the work.

Since Gordon can complete the work in 2 hours, that means in 1 hour, he'll do 1/2 of the job.

When they both work together, we will add their fraction of work done in one hour together. This will be:

= 1/4 + 1/2

= 3/4

This means that both of them will do 3/4 of the job in one hour. Then to get the time taken to get the whole job done, we divide 1 by 3/4. This will be:

= 1 ÷ 3/4

= 1 × 4/3

= 4/3 hours

= 1 hour 20 minutes.

In one

5 0
3 years ago
Round to the nearest 10th "15 is what percent of 48"
Sever21 [200]

Answer:

x=31.25%

Step-by-step explanation:

set up a proportion as 15/48=x/100 and solve.

5 0
3 years ago
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Find the area of the shaded region. Show all of your work.
mihalych1998 [28]

Answer:

8in

Step-by-step explanation:

8 0
2 years ago
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