2. Solve x2 + 2x + 7 = 0 using the Quadratic Formula​

Answers

Answer 1

Answer:

-1 ± i√7

Step-by-step explanation:

x² + 2x + 7 = 0D = 2² - 4*7 = 4 - 56 = -52x = (-2 ± √-28)/2 = (-2 ± 2√-7)/2 = -1 ± i√7

Related Questions

which one is the steepest
A. 1/2
B. 0
C. 3/4
D. 5

Answers

Answer:

3/4

Step-by-step explanation:

Remember: rise/run, where rise is the vertical line and run is the horizontal. To calculate for 5, the rise must be 5x the run (e.g. 25/5). 0 is a horizontal line, since it has no y-axis. Then draw all your lines on a graph. The steepest slope will be 3/4.

Answer:  D) 5

Explanation:

Assuming those given answer choices represent slope values, the steepest slope is the number furthest from 0 on the number line. In other words, it will have the largest absolute value.

In this case, the steepest slope is 5 since this value is furthest from 0 of the other answer choices.

In scientific notation, 670,000,000 + 700,000,000 = ?

Answers

Answer:

1.37 x 10 -9

Step-by-step explanation:

6.7x10^8 + 7x10^8 or 1.37x10^9 if you add them before scientific notation

you have a goal to sell 80 tickets to the school carnival if you completed 10% of your goal how many tickets did you sell

Answers

Answer:

8

Step-by-step explanation:

Answer:

80-10%=79.9

Step-by-step explanation:

You need a calculator for this one

Toby picks a 4-digit number.
It is larger than 2999 and it is a multiple of 2.
How many different numbers could he have picked?

Answers

Let’s reduce this question into easier terminology.

The number is a multiple of 2, meaning it is an even number. It is larger than 2,999 and less than 10,000 (since it is a 4 digit number).

Thus, Toby could have picked any even number from 3000 to 9,999. So this question is asking how many even numbers (multiples of 2) are between 3000 and 9,999.

For every thousand, there are 1000/2 = 500 multiples of 2:

500 multiples between 3,000 and 3,999

500 multiples between 4,000 and 4,999

and so on until 9,999. So there are

7*500 = 3500 multiples of 2 in this range.

Toby could have picked 3500 possible numbers.

standard deviation of 0.116 minute. The winning car that year, driven by Tammy, finished in 110.49 minutes. Find their respective Z-scores. Who had the more convincing victory?
The mean finish time for a yearly amateur auto race was 185.24 minutes with a standard deviation of 0.397 minute. The winning car, driven by Ron, finished in 183.98 minutes. The previous year's race had a mean finishing time of 110.8 with a
Ron had a finish time with a 2-score of
Tammy had a finish time with a 2-score of
(Round to two decimal places as needed.)
Which driver had a more convincing victory?
O A. Ron had a more convincing victory because of a higher Z-score.
OB. Tammy a more convincing victory because of a lower Z-score.
OC. Tammy a more convincing victory because of a higher Z-score.
OD. Ron had a more convincing victory because of a lower Z-score.

Answers

The answer should be B

a farmer has pigs and chickens in the ratio 3:8. if she has 360 pigs, how many chickens does she have

Answers

Answer:

AS  

cows

sheeps

=

3

8

⇒sheeps=

3

8

×180=480

⇒ Total animals = 480 + 180 = 660

⇒ (i) Ratio=  

660

480

=

11

8

(ii)Ratio =

180

660

=

3

11

Step-by-step explanation:

Step-by-step explanation:

If she has 3 pigs = she has 8 chickens

If she has 3(120) pigs = she has 8(120) chickens

If she as 360 pigs = she has 960 chickens

please give me a brainliest answer

What is the complete factored form of f(x)=x3+5x2+4x−6?

A: f(x)=(x+3) (x-(-1+√3)) (x-(-1-√3))
B: f(x)=(x−3)(x−(−1+i√3)) (x−(−1−i√3))
C: f(x)=(x+3)(x−(−1+i√3)) (x−(−1−i√3))
D: f(x)=(x−3)(x−(−1+√3)) (x−(−1−√3))

Please answer as soon as possible!

Answers

Answer:

The answer is A

Step-by-step explanation:

I just took the test

What is the fraction form of the following decimal expansion?

Answers

Answer: B

Step-by-step explanation:

Select the correct answer?

Which expression is equivalent to y2/5, if y ≠ 0?

Answers

Answer:

Exponents =

[tex]\textsf y^{\frac{2}{5}} \textsf{equivalent} \sqrt[5]{y^2}[/tex]

Solution :

[tex]\textsf{When} \ a^{\frac{m}{n}} = \sqrt[n]{a^m}[/tex]

[tex]\textsf{And} \ y^{\frac{2}{5}} = \sqrt[5]{y^2}[/tex]

.

After swimming to a depth of 55 feet below the surface of
the water, a fish swims back up 30 feet. Use a number line
a
to help you create an equation that shows the new location
of the fish in relation to the water's surface.
-80 -70 -60 -50 -40 -30 -20 -10 0
10
Interpret the sum in the context of the problem.
A. The equation is -55 +(-30) = -85. The fish is 85 feet below
the water's surface.
O B. The equation is -55+ 30 = -25. The fish is 25 feet below the
water's surface.
C. The equation is -55+ (-30) = -25. The fish is 25 feet below
the water's surface.
D. The equation is -55+ 30 = -85. The fish is 85 feet below the
water's surface.

Answers

Answer:

Your answer to this question is B. The equation is -55 + 30 = -25. The fish is 25 feet below the water's surface.

Step-by-step explanation:

Hope this helps!

Answer:

B. The equation is -55 + 30 = -25. The fish is 25 feet below the water's surface.

Step-by-step explanation:

HOPE IT HEPL!! :D

The path of a ball in flight is given by h(x) = -0.23(x – 3.4)^2 + 4.2 where x is
a. find h(2) and give a real-world meaning for this value
b. find the x values for h(2)= 2, and describe the real-world meaning of these values
c. how high was the ball when it was released
d. how far will the ball go before it hits the ground

Answers

Answer:

B

Step-by-step explanation:

It’s b

Help ASAP I’ll mark you as brainlister

Answers

your answer is 2x^2+3x+7

Question 7 of 10
A compensation package is
A. health, life, and disability insurance
B. a gym membership paid for by the employer
C. a combination of wage or salary and other types of compensation
D. a combination of retirement and insurance
SUBMIT

Answers

Answer:

C. a combination of wage or salary other types of compensation

Step-by-step explanation:

A compensation package is synopsis/summary of all the ways a company can pay its employees. It can be indirectly or directly.

Solve for the variables shown in the steps simplifying the expression below:
2^5·8^4/16=2^5·(2^a)^4/2^4=2^5·2^b/2^4=2^c.

Answers

Answer:

a=3, b=12, c=13

Step-by-step explanation:

6 find the missing length

Answers

Answer:

C) 143

Step-by-step explanation:

GL/FL = NL/ML

36/39 = 132/ML

39/36 = ML/132

(39/36) x 132 = ML

143 = ML

Hope This Helps! •v•

Write 3.7 as a fraction

Answers

Answer:

37/10

Step-by-step explanation:

brainliest plz

for first answering

Answer:

3 7/10

Step-by-step explanation:

️️️️️️️️️️️

Ayudaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
c:

Answers

Answer:

"uuuuuuh in english"

Step-by-step explanation:

01.01 LC)Look at the following numbers: −4, −5, 0, 5 Which pair of numbers has a sum of zero? 5, −5 −5, 0 −4, 5 −4, 0

Answers

Answer:

5, -5

hope this helps

Answer:

Train to BaDussy

Step-by-step explanation:



Help me in my math thank you​

Answers

Answer:

1. B. 12

2. D. 6

3. A. 12

4. C. 64

5. D. 1[tex]\frac{17}{18}[/tex]

6. B. 16

Step-by-step explanation:

HELP PLSSS THIS IS HARD SOMEONEEE

Answers

Number 4 is the answer as you can see

What is the sum of 6 4/5 and 6 4/5?
A. 12 4/5
B. 29/5
C. 0
D. -12 4/5

Answers

[tex]\bf6 \frac{4}{5} + 6 \frac{4}{5} = (6 + 6) \frac{4}{5} = 12 \frac{4}{5} [/tex]

>> Answer

________

6 4/5 + 6 4/5 = ...

= (6 × 2)4/5

= 12 4/5 (A.)

what is the y-intercept from the following?

Answers

Answer:

the y intercept is -3

Step-by-step explanation:

if you need an explanation lmk!

Answer:

y- intercept = - 3

Step-by-step explanation:

The y- intercept is where the line crosses the y- axis.

This occurs when the x- coordinate is zero

From the table

when x = 0 , then y = - 3 ← y- intercept

Which of the following customary units is the most appropriate unit to measure the capacity of a coffee pot?

A. gallon
B. pound
C. ounce
D. cup

Answers

Answer:

Cup

Explanation:

Gallon is too large, it'll spill over.

Pound is just... Obviously not. You use that to weight people...

And ounce is smaller than a cup but we're talking about the most appropriate unit therefore your answer is cup.

Hope that helps <3

15x+7y=5 find the y-intercept

Answers

The y intercept is when x = 0.

So 15(0) + 7y = 5

7y = 5 (divide by 7)

Y = 5/7

Answer:

slope: -15/7

intercept: ( 0, 5/7)

Step-by-step explanation:

Dilate the image by k=1/4

Answers

k is 1/4. So his height is 1/4 times 4 which is 1.

His new height is 1 ft

A local charity is making fruit baskets for elderly citizens in the neighborhood. Each basket will have 15 pieces of fruit. They bought 1,620 pieces of fruit total.

Answers

Answer:

They can have 108 baskets each with 15 pieces of fruit

Step-by-step explanation:

Please help me solve this

Answers

Answer:

9

Step-by-step explanation:

2(m+2) = 22

Using the distributive property, you can multiply the 2 to both the "m" term and the "2".

2m + 2*2 = 22

2m + 4 = 22

Then you isolate the variable and solve.

2m = 22 - 4

2m = 18

m = 9

2(m + 2) = 22

2(m) + 2(2) = 22

2m + 4 = 22

2m = 22 - 4

2m = 18

2m / 2 = 18 / 2

m = 9

To distribute the 2 to each term inside the parentheses means to multiply the 2 by both terms in the parentheses so

2(m + 2) means (2 × m) + (2 × 4)

An example of a reciprocal of the fraction 3/7 is 7/3 true or false

Answers

Yes that’s true give me brainliest pls
The reciprocal of a fraction is just switching the numerator (top number) and the denominator (bottom number).

So the reciprocal of 3/7 is 7/3, True.

Any help please? Don’t understand

Answers

It’s a hewhedggdhhe e e e fr w d g r e s d es. S d d


Can someone plsss help me with the circled question tysm if u doo :((

Answers

Answer:

4×sqrt(5) inches

Step-by-step explanation:

Pythagorean theorem states that (for right triangles) if you square each shorter side and add those together, you will get the sum of the longest side (hypotenuse) squared.

This is commonly written as:

a^2 + b^2 = c^2, where c is the hypotenuse.

((For right triangles this will always be opposite the 90° angle.))

Since you know one of the shorter sides and the hypotenuse, rewrite the equation as such:

c^2 - b^2 = a^2, where a is the unknown length

This goes to:

sqrt(c^2 - b^2) = a

sqrt((12in)^2 - (8in)^2) = a

sqrt(144sqin - 64sqin) = sqrt(80sqin) = a

This simplifies to:

sqrt(16sqin)×sqrt(5sqin) = 4in×sqrt(5sqin) = a

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