How many roots does y=3x^2+8 have?

Answers

Answer 1

Answer:

This quadratic has two unequal, imaginary roots.

Step-by-step explanation:

y = 3x^2 + 8 is a quadratic function, and (like all quadratics) it has two roots.  In this case they happen to be different (unequal), as well as imaginary.

Setting y = 3x^2 + 8 = 0, we get:

3x^2 = -8, or

x^2 = -8/3

Taking the square root of both sides, we get

x = ±i√(8/3) (2 imaginary roots)


Related Questions

Simplify the radical expression.

2√10 . 3√12


A.12√60
B.5√120
C.12√30
D.6√120


Simplify the radical expression.

√14q . 2√4q

A.3√56q
B.4q√14
C.2√56q^2
D.4√14q^2



Simplify the radical expression by rationalizing the denominator.


4/√11

A.11√4
B.4√11
C.4√11/11
D.√121/11

Answers

Your answers are:
1) C.
2) B.
3) C.

Luke wants to send 21 parcels by the Express service.
He does the calculation 20 x £15 = £300 to estimate the cost.
(b)
Explain why Luke's calculation shows the actual cost will be more than £300

Answers

Answer:

Because he has to send one more parcel than the estimation.

Step-by-step explanation:

HELPP with part (b) will make brainlest !!!!!

Answers

Answer:

I dont no the answer

Step-by-step explanation:

but maybe try the app socratic

Samantha earns $8 p;er hour as a cashier. Write an equation that shows her earnings (E) after 'h' hours

Answers

Answer:

E=8h

Step-by-step explanation:

Becuase the earings equal the $8 times the amount of hours she worked.

PLEASE HELP ME WITH THIS I WILL GIVE BRAINLIEST

Answers

Answer:

12, 24, and 60

Help me with this pls

Answers

Answer:

C

Step-by-step explanation:

PLEASE HELP I NEED HELP​

Answers

it is C because x dont reapeat

Checks can be used to:
make purchases
pay rent
pay bills
all of the above​

Answers

Answer:

all of the above

Step-by-step explanation:

according to your question

The correct choice is all of the above

HELP ill mark you brainlist

Answers

Answer:

-8 + 11n OR 11n - 8

Step-by-step explanation:

an = 3 + (n-1)11

an = 3 + 11n - 11

an = -8 + 11n OR 11n - 8

Hope that helps!

Answer:

find the last SIMPLIFIED number

11 x 5 = 55

55 simplfiied = 27.5

Step-by-step explanation:

sorry if this is wrong. i tried my best trying to look for the answer

HELP PLEASE 2 Based on past experience, a pencil factory owner believes that 3 out of every 150 pencils will be defective in some way. Using this information. What is the best prediction of the number of defective pencils in a shipment of 3.000 pencils?

Answers

First you find out the percentage of 3 out of 150... which is 2% now what is 2% of 3,000?
The answer is 60. You’re welcome.

what is the measure in degrees

Answers

Answer:

B = 155°, C = 25°, D = 155°

Step-by-step explanation:

Assuming you require B, C, D

A and B are adjacent angles and are supplementary , that is

A + B = 180°

25° + B = 180° ( subtract 25° from both sides )

B = 155°

A and C are vertically opposite angles and are congruent, then

C = 25°

B and D are vertically opposite angles and are congruent , then

D = 155°

i give brainliest pls help meee.

Answers

9 + 35x ≤ 310. 9 is the park fee, and 35x means that is 35 dollars per person. X is the amount of people and 310 is the maximum.

INSTRUCTIONS: Calculate the Mean, Median, Mode, and Range from the data set (February 14-28, 2021).
10.9, 10.4, 9, 5.7, 7.8, 9.3, 2.2, 11, 9.6, 4.8, 7.4, 8.4, 7.7, 10.8, 7.7, 10.8, 13.7 (PLS HELP)

Answers

Answer:

The mean is 128.7

There is no mode

The median is 9

The range is 11.5

Step-by-step explanation:

Find the mean of the following set: 30, 16, 29, 14, 21

Answers

Answer:

the mean is 18.2, median is 16, and there is no mode

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

mean is the average of the number.you have to add up all the number then divide it by how many numbers there are.

your question is :30,16,29,14,21 (5 number)

(30+16+29+14+21) / 5 = 22

Write the recursive formula for this sequence: 3, 1, -1, ... *

Answers

Answer:

the answer is 5-2n please do you get it

What would be the first step in solving the equation 7/9x + 34 = 174?

Answers

Answer:

[tex] \frac{7}{9} x + 34 = 174 \\ => \frac{7x}{9} = 174 - 34 \\ = > \frac{7x}{9} = 140 \\ = > 7x = 140 \times 9 \\ = > 7x = 1260 \\ = > x = \frac{1260}{7} = 180 \\ { \huge{ \pink{x = 180}}}[/tex]

❤️❣️❤️

Harpo, Groucho, Chico, Zeppo, Gummo, Karl, and Skid have won three tickets to the opera. They will randomly choose three people from their group to attend the opera. How many outcomes are possible?

Answers

Answer:

35

Step-by-step explanation:

This is a combination problem therefore we need to use the combination formula using factorials, plug in the values for n and r which would be 7 since there are 7 individuals in the group and 3 because we are making outcomes of 3.

C(n,r)=C(7,3)

=7!(3!(7−3)!)

=7!3!×4!

= 35

Finally, we can see that the total number of possible outcomes is 35

Every time Vince orders Chinese food, he gets egg drop soup. So, he decides to learn how to make it himself. His recipe calls for 1.5 liters of broth, but he can only find 500-milliliter cartons at the store. How many cartons should he buy?

Answers

Answer: 3

Step-by-step explanation:

Vince will have to buy three cartons of 500 ml each.

What is expression in mathematics?

An expression in mathematics is a combination of terms both constants and variables.

Given is that every time Vince orders Chinese food, he gets egg drop soup. So, he decides to learn how to make it himself. His recipe calls for 1.5 liters of broth, but he can only find 500 milliliter cartons at the store.

We know that -

1 Liter = 1000 milliliters

1.5 liter = 1500 liters

Now -

1 carton 500 ml.

Then, 1 ml will be in (1/500) carton.

So, 1500 ml will be in (1/500 x 1500) = 3 cartons

Therefore, Vince will have to buy three cartons of 500 ml each.

To solve more questions on algebraic expressions, visit the link below -

https://brainly.com/question/27911936

#SPJ2

I need help and show work​

Answers

-4+(-3)
=-7

since it’s two negatives , you’re just adding them

In a survey of 3,200 people who owned a certain type of car, 1,920 said they would
buy that type of car again. What percent of the people surveyed were satisfied with the car?
% of the people surveyed were satisfied with the car

Answers

Answer: 60%

Step-by-step explanation: 1920/3200=.6  .6 in a percentage is 60%

Maria sells painting in a art gallery. She earns $375 each week plus a commission of 2.5% of her swelled. What is the minimum amount of sales she must have this week to earn at lease $500.

Answers

Answer:

5000.00

Step-by Step

500.00-375.00 = 125.00

5000 x 2.5% = 125.00

375.00 + 125.00 = 500.00

Part 1: What is the rate of rice to quarts of water for this recipe that uses 4 pounds of rice and 5 quarts of boiling water?​

Answers

Given:

A recipe uses 4 pounds of rice and 5 quarts of boiling water.

To find:

The rate of rice to quarts of water for this recipe.

Solution:

We need to divide the amount of rice by amount of water to get the rate of rice to quarts of water for this recipe.

[tex]\text{Required rate}=\dfrac{\text{Rice in pounds}}{\text{Water in quarts}}[/tex]

[tex]\text{Required rate}=\dfrac{4}{5}[/tex]

[tex]\text{Required rate}=0.8[/tex]

Therefore, the  rate of rice to quarts of water for this recipe is 0.8.

Which angle is supplementary to ∠1?

Answers

Answer: angle 2 is supplementary to angle 1
the answer is angle 2

Find the measure of each angle indicated.
23°
128°

Answers

Find the acute angle in the first quadrant used as a reference for

23, 128, 337, 128

4x – 5.2y + 6y + 7.9x – 8x *

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\textsf{4x - 5.2y + 6y + 7.9x - 8x}[/tex]

[tex]\huge\text{COMBINE your LIKE TERMS}[/tex]

[tex]\large\textsf{(4x + 7.9x - 8x) + (-5.2y + 6y)}[/tex]

[tex]\large\textsf{4x + 7.9x - 8x =}[/tex]

[tex]\large\textsf{4x + 7.9x = 11.9x}[/tex]

[tex]\large\textsf{11.9x - 8x = 3.9x}[/tex]

[tex]\large\textsf{4x + 7.9x - 8x = 3.9x}[/tex]

[tex]\large\textsf{(3.9x) + (-5.2y + 6y)}[/tex]

[tex]\large\textsf{-5.2y + 6y = 0.8y}[/tex]

[tex]\boxed{\boxed{\large\textsf{Answer: \huge \bf3.9x + 0.8y }}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

3.9x+0.8y

Step-by-step explanation:

4x−5.2y+6y+7.9x−8x

Combine −5.2y and 6y to get 0.8y.

4x+0.8y+7.9x−8x

Combine 4x and 7.9x to get 11.9x.

11.9x+0.8y−8x

Combine 11.9x and −8x to get 3.9x.

3.9x+0.8y

It can also be converted to fraction form:

[tex]\frac{4y}{5}+\frac{39x}{10} = 3.9x+0.8y[/tex]

what is the area to this triangle

Answers

Answer:

12 x 12 = 144 divided by 2 = 72, 72 is your answer formula of a triangle: BH x 1/2

Step-by-step explanation:

72 square cm

help please! find m∠bcf

Answers

Answer:

BCF = 140°

See attached image.

Answer:

m<BCF=140°

Step-by-step explanation:

first find m<BCD

m<BCD=180-50-90

m<BCD=40°.

to find m<BCF, we can do 180-m<BCD, since m<BCD and m<BCF add up to 180° (they form a straight angle)

180-m<BCD=m<BCF

180-40=m<BCF

m<BCF=140°

what is pi and how invented it??

Answers

Answer:

Step-by-step explanation:

The Egyptians calculated the area of a circle by a formula that gave the approximate value of 3.1605 for π. The first calculation of π was done by Archimedes of Syracuse (287–212 BC), one of the greatest mathematicians of the ancient world.

Answer:

π is a mathematical constant. Its commonly used value is 3.14. There is a expanded value for π. It appears in many formulas in all areas of mathematics and physics. In maths, it is commonly used for solving of circles and spheres.

The π was invented by Archimedes of Syracuse. He was one of the greatest mathematicians of the ancient world.

7(x-2)<2x+3 as a improper fraction

Answers

Answer:

-23/3

Step-by-step explanation:

sorry if i am wrong

-23/3 :)))))) i hope u have a nice day

which is a rational number
a) 1.4142135623
b) 3.6256256
c) 2 (pie)
d) squared 5​

Answers

Answer:

Rational numbers can be expressed as a fraction

Squared 5 = 25

25 can be expressed as  a  fraction- 25/1, so d is correct.

Let me know if this helps!

5 squared is right im sorry i miss read it

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