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Sati [7]
3 years ago
8

Solve 3x^2 + x + 10 = 0 round solutions to the nearest hundredth

Mathematics
2 answers:
lara31 [8.8K]3 years ago
4 0

Answer:

C. X= -2.01 and x= 1.67

Step-by-step explanation:

3x {}^{2}  + x + 10 = 0 \\ 3x {}^{2}  + 6x - 5x + 10 = 0 \\ 3x(x + 2) - 5(x + 2) \\ (x + 2)(3x - 5 )\\  x  + 2 = 0 \:  \: or \:  \: 3x - 5 = 0 \\ x =  - 2 \:  \: or \:  \: x =  \frac{5}{3}

USPshnik [31]3 years ago
4 0

<u>ANSWER</u>

B. No real solutions

<u>EXPLANATION</u>

The given equation is

3 {x}^{2}  + x + 10 = 0

By comparing to

a {x}^{2}  + bx + c= 0

We have a=3,b=1 and c=10.

We substitute these values into the formula

D =  {b}^{2}  - 4ac

to determine the nature of the roots.

D =  {1}^{2}  - 4(3)(10)

D = 1  - 120

D = - 119

The discriminant is negative.

This means that the given quadratic equation has no real roots.

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The distance between the starting point in the finishing line of the Boston marathon is 4 inches on an interactive course map if
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Step-by-step explanation:

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During the month of April, Dora kept track of the bugs she saw in her garden. She saw a ladybug on 23 days of the month. What is
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4 0
3 years ago
On Martin's first stroke, his golf ball traveled 4/5 of the distance to the hole. On his second stroke, the ball traveled 79 met
Sav [38]

Answer:

0.395 kilometre

Step-by-step explanation:

Given:

On Martin's first stroke, his golf ball traveled 4/5 of the distance to the hole.

On his second stroke, the ball traveled 79 meters and went into the hole.

<u>Question asked:</u>

How many kilometres from the hole was Martin when he started?

<u>Solution:</u>

Let distance from Martin starting point to the hole in meters = x

On Martin's first stroke, ball traveled = \frac{4}{5} \ of \ total \ distance\ to\ the\ hole

                                                             =\frac{4}{5} \times x=\frac{4x}{5}

On his second stroke, the ball traveled and went to the hole = 79 meters

Total distance from starting point to the hole = Ball traveled from first stroke + Ball traveled from second stroke

x=\frac{4x}{5} +79\\ \\ Subtracting\ both\ sides\ by \ \frac{4x}{5}\\ \\ x- \frac{4x}{5}= \frac{4x}{5}- \frac{4x}{5}+79\\ \\ \frac{5x-4x}{5} =79\\ \\ By \ cross\ multiplication\\ \\ x=79\times5\\ \\ x=395\ meters

Now, convert it into kilometre:

1000 meter = 1 km

1 meter = \frac{1}{1000}

395 meters = \frac{1}{1000}\times395=0.395\ kilometre

Thus, there are 0.395 kilometre distance from Martin starting point to the hole.

8 0
2 years ago
Which of the following expressions is equal to P/17
tiny-mole [99]

Answer:

a and b would work in my opinion because it doesn't say in which specific order.

4 0
2 years ago
Read 2 more answers
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