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vekshin1
3 years ago
11

Please help meeeeeeee pt 4

Mathematics
1 answer:
liraira [26]3 years ago
5 0

Answer:

The answer is

2 {x}^{2}  + 3x - 1 = 0

Why? Below I explain

Step-by-step explanation:

That formula has three variables a, b and c.

So, a = 2, b = 3 and c = -1

Because the formula is written like

\frac{ - b +  -  \sqrt{ {b}^{2}  - 4 \times a \times c} }{2 \times a}

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Round to the place of the underline digits 126,234 under line is 6
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126,234 rounds to 126,000
3 0
3 years ago
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47. Calculate the value of c in the triangle below.
TiliK225 [7]

Using the Pythagorean theorem

C = sqrt( 9^2 + 40^2)

C = sqrr(81 + 1600)

C = sqrt(1681)

C = 41 cm

5 0
3 years ago
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1/4+4x/5=31/15 please show your work.
Novosadov [1.4K]

Answer: x = 109/48


Step-by-step explanation:

1. Simplify 4 x x/5 to 4x/5

1/4 + 4x/5 = 31 15

2. Subtract 1/4 from both sides

4x/5 = 31/15 - 1/4

3. Simplify 31/15 - 1/4 to 109/60

4x/5 = 109/60

4. Multiply 1both sides by 5

4x = 109/60 x 5

5. Simplify 109/60 x 5 to 545/60

4x = 545/60

6. Simplify 545/60 to 109/12

4x = 109/12

7. Divide both sides by 4

x = 109/12/4

8. Simplify 109/12/4 to 109/12 x 4

9. Simplify 12 x 4 to 48

x = 109/48


Hope this helps & happy halloween! :)





3 0
3 years ago
The sides of a rectangle are 15cm and 7cm long. How far is the point of the diagonal cross section from the sides of this rectan
irinina [24]

Answer:

See below in bold.

Step-by-step explanation:

If we draw a line from the point of intersection to the longest side of the rectangle it will meet it at the midpoint.

The same thing will happen when the line is draw to the shortest side.

So the point of intersection is  1/2 * 7 = 3.5 cm from the longest side and 15/2 = 7.5 cm from the shortest side.

6 0
4 years ago
A 6-car monorail train can carry 78 people.If the train makes 99 trips during the day,what is the greatest number of people the
SVETLANKA909090 [29]

Given:

The number of people the monorail train can carry per trip = 78

The number of trips during the day = 99

Solution:

The greatest number of people the train can carry in one day equals to the product of the number of people the monorail train can carry per trip with the number of trips during the day.

The \; greatest \; number \; of \; people \; the \; train \; can \; carry \; in \; one \; day \\ = 78 \times 99 =7722

Conclusion:

The option D) is the correct answer

8 0
3 years ago
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