Mathematics College

PLEASE HELP!!! ASAP

determine the number and type of solutions to the equation: x^2+7x=-11
a.) two real solutions
b.) one real solution
c.) two imaginary solutions
d.) one imaginary solution

Answers

Answer 1

Answer:

b i think because for it to be imaginary, im sure there has to be an i in the equation

Answer 2

Answer:

A) Two Real Solutions

Step-by-step explanation:

Correct on Big Ideas Math :)

Related Questions

12x21/6 pls help ...........................................................

Answers

Answer:

42

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A crew of highway workers paved 1/2 mile in 1/4 hour. If they work at the same rate, how much will the pave in one hour

Answers

I believe they will have paved 2 miles, hope this helps!

The area of a triangular church window is 90 square meters. The base of the window is 15 meters. What is the window’s height?

Answers

Answer:

12 is the answer

Step-by-step explanation:

Which of the following types of statement cannot be used to explain the
steps of a proof? Check all that apply.
A. Conjecture
B. Guess
OC. Postulate
0 D. Theorem

Answers

Answer:

A. Conjecture

B. Guess

Steps of a proof cannot be explained using A. conjecture and B. guess.

What is Conjecture?

Conjectures in mathematics is a term which is given to the situation where something is guessed without any proof or basics.

This may be true, but are not proved up to this day.

Theorems are something which are already proved. This can be used in figuring out the proof of any problems.

Similarly, postulates are something which are the special cases of a certain proof. These can also be used to prove anything in mathemetics.

But guess and conjectures are not already proved statements. So these cannot be used.

Hence the options are Guess and Conjectures.

Learn more about Conjectures here :

https://brainly.com/question/24881803

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How many different 3-digit numbers can be made using each of these digits shown below only once?
3,6,9
OA 3
O B. 6
Oc. 8
OD 10
O E more than 12

Answers

E cause you can miss match number and make more than 12

There were 10 bunches of roses and tulips. Each bunch had 5 of the same flowers. There were 2 more bunches of tulips than roses. How many tulips were there?

Answers

Answer:

I think the answer is 12 (sorry if i misunderstood the question)

Step-by-step explanation:

Because if there are 10 things of roses and tulips and then 2 more tulips are added in the question in total thats 12.... 10+2=12

What is the final price of a $5000 item with a 44% markup?

Answers

Answer:

$7200

Step-by-step explanation:

5000 increase 44% =

5000 × (1 + 44%) = 5000 × (1 + 0.44) = 7200

You deposited $125 in a savings account that earns a simple interest rate of
1.75% per year. You earned a total of $8.75 in interest. For how long was your
money in the account?​

Answers

9514 1404 393

Answer:

  4 years

Step-by-step explanation:

Each year, the interest earned is ...

  0.0175 · $125 = $2.1875

Then the time it took to earn $8.75 in interest was ...

  $8.75/(2.1875/year) = 4 years

A scientists Used 786 milliliters of liquid for an experiment. How many liters of the liquid did the scientists use for this experiment?

Answers

Answer:

0.786 L

1000 ml to 1 L

(786 ml) / (1000 ml) = 0.786 L

Step-by-step explanation:

Tess and Alice are both on the swim team. Last practice, they each swam laps for the same amount of time, but Tess finished more laps. This weekend, They're swimming the same number of laps at a swim meet. Who will likely finish first?

SOMEONE PLEASE ANSWER SOON :)

Answers

Answer:Tess, sorry im a week late

Step-by-step explanation: ):

70%of it is 14 min find the valy ofx

Answers

Note:

Your questions sound a little unclear.

But, I am assuming your questions as:

''70% of x is 14 min. Find the value of x''.

So, I will solve assuming this statement which anyways would clear your concept.

Answer:

The value of x = 20.

Step-by-step explanation:

Given

''70% of x is 14 min. Find the value of x''.

Thus,

70% of x = 14

70/100 × x = 14

0.7x = 14

divide both sides by 0.7

0.7x/0.7 = 14/0.7

x = 20

Therefore, we conclude that the value of x = 20.

The radius of a circle is 11 ft. Find the circumference of the circle.

34.54 ft

69.08 ft

17.27 ft

25.14 ft

Answers

Answer:

69.12 ft

Step-by-step explanation:

The formula for circumference of a circle is 2πr

= 2 × 3.142× 11

= 69.12

Hence the circumference of the circle is 69.12 ft

Joyce paid $220 for an item at the store that was 30 percent of the original price. What was the original price?

Answers

Answer:

if 220=30%

100%=?

220×100÷30

=$733.333

Write a verbal description of the set {3,6,9}

Answers

Answer:

They are each a consecutive multiple of 3 and the highest number is the sum of the two lower numbers.

The higher number is also a square product of the lower number/

Step-by-step explanation:

3, 6. 9

3 = 3 x 1

6 = 3 x 2

9 = 3 x 3

and

3+ 6 = 9

and

3^2 = 9

find the area of this parallelogram

13cmx20cm
answer
260​

Answers

Answer:

Area = 260 cm²

Step-by-step explanation:

Area of parallelogram = base × height

Base = 20 cm

Height = 13 cm

Plug in the values

Area of parallelogram = 20 × 13

Area = 260 cm²

Zachary purchased a computer for $1,400 on a payment plan. Two months after he purchased the computer, his valence was $1,120. Three months after he purchased the computer, his balance was $980. What is an equation that models the balance y after x months?​?

Answers

9514 1404 393

Answer:

  y = 1400 -140x

Step-by-step explanation:

In the first two months, Zachary paid ...

  1400 -1120 = 280

so 280/2 = 140 per month. This is the amount that the balance decreases each month from the starting balance of $1400.

Zachary's balance (y) can be modeled as ...

  y = 1400 -140x

What is the length, in centimeters (cm), of y?

Answers

Answer:

Step-by-step explanation:

Use Pythagorean Theorem for a right triangle.

a^2 + b^2 = c^2

3.6^2 + 4.8^2 = c^2

c = 6cm

The length of y (Hypotenuse) is 6 cm.

We have,

Perpendicular = 3.6 cm

Base = 4.8 cm

Hypotenuse = y

Using Pythagoras theorem

Hypotenuse² = Base² + Perpendicular²

So, y² = 4.8² + 3.6²

y²= 23.04+ 12.96

y²=

y= √36

y= 6 cm

Thus, the value of y (Hypotenuse) is 6 cm.

Learn more about Pythagoras theorem here:

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PLS HELP ASAP y = -3x + 1
y = x -7​

Answers

Answer:

x=-1/3

x=7

Step-by-step explanation:

Not sure if this correct tho

Answer:

x=2

y=-5

Step-by-step explanation:

substitute y=-3x+1 in y=x-7

[tex]-3x+1=x-7[/tex]

[tex]-3x-x=-7-1[/tex]

[tex]-4x=-8\\x=2[/tex]

Substitute x=2 in any one of the given equations

y=x-7=2-7=-5

One batch of cookies makes 18. How many
batches will you need to make to be sure you
have at least 100

Answers

Answer:

6

Step-by-step explanation:

100/18=5 1/2

18*6=108

Answer : 18x5=90 18x6=108

Step-by-step explanation:

2x +4 (3 - 2x) = 3(2x + 2)/6 + 4

Answers

Answer:

2/3

Step-by-step explanation:

spread it out

2x + 12 - 8x = (6x + 4)/2 + 4

2x + 12 - 8x = 3x + 2 + 4

solve

9x = 6

x = 6/9 --> 2/3

check over the process if i did this correctly lol

Identify the constant of proportionality from the graph. 11 10 9 00 7 6 5 1 2 3 4 5 6 7 8 9 10 11 O A. 4 B. 8 O c. D. 3​

Answers

Answer:

A. 4

Step-by-step explanation:

Constant of proportionality (k) = y/x

We can use the coordinates of any point on the line to find k.

Let's use (2, 8)

Constant of proportionality (k) = 8/2

Constant of proportionality (k) = 4

A store advertises a sale that all items are
marked down 30% or more. A life jacket is
marked down from $68 to a sale price of
$44.20. Is the advertisement true? Explain
why or why not.

Answers

Step-by-step explanation:

true. 30% of 68 is 20.40 if it was 30 percent off it would be 47.60 and it's is 3.40 more off so it is true that it is 30% or more

Automobile engines and transmissions are produced on assembly lines, and are inspected for defects after they come off their assembly lines. Those with defects are repaired. Let X represent the number of engines, and Y the number of transmissions that require repairs in a one-hour time interval. The joint probability mass function of X and Y is as follows: y x 0 1 2 3 0 0.13 0.10 0.07 0.03 1 0.12 0.16 0.08 0.04 2 0.02 0.06 0.08 0.04 3 0.01 0.02 0.02 0.02 Find the marginal probability mass function of X. Round the answers to two decimal places. pX(0) pX(1) pX(2) pX(3)

Answers

Answer:

[tex]\begin\\\begin{tabular}{|l|l|l|l|l|l|}x&0&1&2&4&Sum\\P(x)&0.33&0.40&0.20&0.07&1.00\end[/tex]

Step-by-step explanation:

From the question we are given the table

[tex]\begin\\\begin{tabular}{|l|l|l|l|l|} &&y \\x &0&1&2&3\\0 &0.13&0.1&0.07&0.03 \\1&0.12&0.16&0.08&0.04\\ 2&0.02&0.06&0.08&0.04\\ 3&0.01&0.02&0.02&0.02\end[/tex]

Generally the marginal probability mass function of X is mathematically given as

[tex]P(x)=\sum P(x,y)>y[/tex]

[tex]\sum P(0)=0.13+0.1+0.07+0.03=0.33\\\sum P(1)=0.12+0.16+0.08+0.04=0.40\\\sum P(2)=0.02+0.06+0.08+0.04=0.20\\\sum P(3)=0.01+0.02+0.02+0.02=0.07[/tex]

Therefore marginal probability mass function of X

[tex]\begin\\\begin{tabular}{|l|l|l|l|l|l|}x&0&1&2&4&Sum\\P(x)&0.33&0.40&0.20&0.07&1.00\end[/tex]

The solution to n + 4n – 3n = 16 is _____. 16 2 -2 8

Answers

Answer:

it is 8 i had the same question

Step-by-step explanation:

Answer:

answer is 8

Step-by-step explanation:

sun of the fraction 1/6 + 1/3 =

Answers

Answer:

.5 or 1/2

Step-by-step explanation:

so make the bottoms equal

to do this multiply 1/3 by 2

then it’s 2/6

then both bottoms are equal

then add the tops

your answer is

3/6

then simplify

so now your answer is 1/2

Given the equation y
- x+1
The x intercept is:
The y intercept is:

Answers

Answer:

−x+y+1

Step-by-step explanation:

Perform the indicated operation.

Answers

Answer:

c

Step-by-step explanation:

Suppose a 99% confidence interval for the mean weight of high school girls in pounds is (102.3, 106.5). If we had measured the weights of each of the girls in kilograms (2.2 pounds = 1 kilogram) then the confidence interval for the mean weight of high school girls in kilograms would have been

Answers

Answer:

The confidence interval for the mean weight of high school girls in kilograms would have been would have been (46.5, 48.41).

Step-by-step explanation:

To find the interval, we can just make the conversion of the values from pounds to kilograms.

Each kilogram has 2.2 pounds. So, to realize the conversion from pounds to kilograms, we divide by 2.2.

Confidence interval: (102.3 pounds, 106.5 pounds).

102.3 pounds = 102.3/2.2 = 46.5 kilograms

106.5 pounds = 106.5/2.2 = 48.41 kilograms

The confidence interval for the mean weight of high school girls in kilograms would have been would have been (46.5, 48.41).

Simplify the following expression.
10
63
=
O A 18
OB.
1
216
О С.
1
18
1
OD.
216

Answers

Answer:

E X P L A N A T I O N, 3290R + Y = HIFEUDSGRF344TRG

Step-by-step explanation:

B.

Marist scholars ate a total of 16 bananas for snack. If the 34 kids in Bing-BU each ate a half of a banana for snack, which class ate more total bananas

Answers

Answer:

well 34/2= 17 so the kids in Bing-BU ate more total bananas

Step-by-step explanation:

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