Mathematics College

Find the discriminant and the number of real roots for this equation.
x²+2x+7=0
O A. -24; one real root
B. 28; two real roots
C. -24; no real roots
D. 28; one real root
SUBMIT

Answers

Answer 1

Answer:

C. -24 no real roots

Step-by-step explanation

Related Questions

HELP!! Graph the equation.
y=-2(x-1)^2-4
Its an interactive graph.

Answers

Step-by-step explanation:

according to the question the graph must be like this. inverted parabola

The perimeter of a rectangle is 32. The width is four less than the length. Find the length of the rectangle.

Answers

all the explanation is in the photo

Please help me ASAP! on these two questions please and thank you have a great and blessed day!

Answers

Answer:

1: 1.268, 1.265, 1.256

2: $16.42

Step-by-step explanation:

I did the math.

Lauri is picking out material for her new quilt. At the fabric store, there are 1919 solids, 99 striped prints, and 1212 floral prints that she can choose from. If she needs 33 solids, 33 floral prints, and 33 striped fabrics for her quilt, how many different ways can she choose the materials

Answers

Answer:

1,79,07,120  ways

Step-by-step explanation:

Ways in which 3 solids can be chosen from 19 solids = 19 c 3

33 striped prints can be chosen from 99 striped prints in 9 c 3 ways

33 floral prints can be chosen from 121 floral prints in 12 c 33 ways

So, total ways = (19 c 3) (9 c 3) (12 c 3)

(969) (84) (220)

1,79,07,120

I'll give you 30 points please need help​

Answers

Answer:

1831.34

Step-by-step explanation:

Ok this might be the answer hopefully I am right sorry if I am wrong

Based on the following data, would Beth and Roger Simmons receive a refund or owe additional taxes.

Answers

Answer:

received a refun

Step-by-step explanation:

They will need to get refund based on the information given because I don't see any data to work with here

Which expression is equivalent to 1/5(150x-80y+50-50x-25y+20)

Answers

Answer: A

Step-by-step explanation:

this what i got
hope it helps!!

y=18 +6x
Rate of change:

Answers

Answer:






6(3+x)

Hope it helps

What factor is missing? 24 + 12= ____(8+4)

Answers

3
Aoggianaiqos Ajaxzjka

Answer:

3

Step-by-step explanation:

24 + 12 = ___(8+4)

36 = ___(12)

36/12 = 3

0.75% of 80 is what number

Answers

Answer:

i got it is 0.6. That is the number

Answer:

75 percent of 80 is 60....

Step-by-step explanation:

Miranda needs to add 68+19 mentally but is struggling.If she knows that 68+20=88 how can she use this to help.Use a similar approach to describe how Miranda could add 37+29 mentally

Answers

If Miranda knows that 68+20=88 she can just subtract 1 from that answer because 20 is on less than 19. Miranda can use the same approach for 37+29 if she knows 37 + 30.
If she knows 68+20=88, then all she has to do is subtract 1 to get the answer to her original equation. If you use the same approach in the second equation it looks like this: 37+30=67 and she needs the answer to 37+29 so just subtract 1 and there’s your answer 66.

equation shows the relationship between X and why.
y= - 7 + 9
what is the slope of the equation?

Answers

Answer:

-7

Step-by-step explanation:

I am assuming that you meant y=-7x+9

so the the slope would be y=mx+b

so -7

If x is a positive integer, which of the following must be an even integer that is twice the value of an odd integer.

A. 2x
B. 2x + 1
C. 2x + 2
D. 4x + 1
E. 4x + 2

Answers

Answer: B

2 is twice the value of 1 because 1+1=2

2. George worked 40 regular hours and 5 overtime hours this week. If his regular pay is $14 per
hour, and he is paid double time for overtime hours, how much did he earn this week?

Answers

Answer:

$700

Step-by-step explanation:

40(14)+28(5)

560+ 140

700

A suitcase is 27 inches long and
24 inches wide. What is the
diagonal length of the suitcase?

Answers

Answer:

The diagonal is 30 inches

step-by-step explanation:

The diagonal is 30 inches

Step-by-step explanation:

Assuming a rectangular suitcase (with right angles), we can use the Pythagorean theorem to solve this

a² + b² = c²

so we plug our two values to find the diagonal (hypotenuse)

24² + 18² = c²

576 + 324 = c²

900 = c²

c = √900

c = 30

The diagonal is 30 inches

What are the truck ID’s of trucks that have carried small shipments. Small shipments are defined as those that weigh less than 800 pounds? (HInt: Avoid duplcates.)

Answers

Table for the question is attached in the picture below :

Answer:

SELECT distinct(TRUCK_ID), WEIGHT from SHIPMENT where WEIGHT < 800 ;

Step-by-step explanation:

The Structured query language (SQL) defined above, returns only the TRUCK_ID and Weight column from the shipment table as they are the only two columns listed after the select keyword. The condition is added using the WHERE keyword on the weight table, this filters the result returned to include only rows where the weight value is less than 800. The distinct keyword used alongside the TRUCK_ID column ensures that a certian TRUCK_ID value isn't returned more than once (Hence, it is used to avoid duplicates).

Natalie and Phil ran for 6th grade class president. The ratio of votes for Natalie to the votes for Phil is 16:12. Which statement is true? *

For every vote Phil received, Natalie received 4 votes.
For every vote Phil received, Natalie received 3 votes.
For very 4 votes Natalie received, Phil received 7 votes
For every 4 votes Natalie received, Phil received 3 votes.

Answers

Answer:

For every 4 votes Natalie received, Phil received 3 votes.

Step-by-step explanation:

What is the equation of a line with a slope of 6 and a y-intercept of -2?

Answers

Answer:

y = 6 x - 2

Step-by-step explanation:

_________________________

Answer:

y=6x-2

Step-by-step explanation:

y=mx+b where m=slope and b=y-intercept.

what is 7/8 x 4/7 in simplest form?

Answers

1/2 step 1 Address formula, input parameters & values.
Input parameters & values:
7
8
& 4
1

7
8
x
4= ?

step 2 Multiply both numerators
= 7 x 4
= 28

step 3 Multiply both denominators
= 8 x 1
= 8

step 4 Use above values of step 2 & 3, and rewrite as below
= 28/8

Thus, 28/8 is equivalent fraction for 7/8 times of 4, and its simplified term is 7/2.

The expression (7/8) x (4/7) simplified to its simplest form is 1/2.

To simplify the expression (7/8) x (4/7), you can multiply the numerators together and the denominators together, and then simplify the resulting fraction if possible.

(7/8) x (4/7)

= (7 x 4) / (8 x 7)

= 28 / 56

To simplify this fraction, we can divide both the numerator and the denominator by their greatest common divisor (GCD), which is 28:

28 / 56

= (28 ÷ 28) / (56 ÷ 28)

= 1 / 2

Therefore, (7/8) x (4/7) simplified to its simplest form is 1/2.

To learn more on Expressions click:

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Plsss help me! What is the lenght of AB

Answers

Answer:

Step-by-step explanation:

Because angles A and B are the same, line segments AB and BC are the same.  This means you can use the same variable for both in the Pythagorean theorem.

x²+x²=20²

2x²=400

x²=200

x=√200

x=14.1421356237

Answer:

x = 10[tex]\sqrt{2}[/tex]

Step-by-step explanation:

this is a 45-45-90° Δ and the leg to hypotenuse ratio is always 1 : [tex]\sqrt{2}[/tex]

so we can set up a proportion:

20 / [tex]\sqrt{2}[/tex] = x / 1

cross-multiply:

[tex]\sqrt{2}[/tex]x = 20

x = 20 / [tex]\sqrt{2}[/tex], which simplifies to 10[tex]\sqrt{2}[/tex] if you rationalize the denominator

Help please! I’ll give brainliest!

Answers

I think it’s 24
Since 7*6=42, 5*6=30, and 4*6 will equal to 24

-12 times - 1 over 3

Answers

Answer:

4

Step-by-step explanation:

(-12)(-1)/3=12/3=4

Answer:

4

Step-by-step explanation:

-12x-1=12

12/3=4

A band will sell CDs of their music at their concert for $5.00 each. The band ordered 300 CDs at a cost of $1.25 each. Which inequality represents the number of CDs, n, the band needs to sell to make a profit of at least $500?

1. x is greater to or equal to 99
2. x is greater to or equal to 100
3. x is greater to or equal to 133
4. or x is greater to or equal to 134

Answers

Given:

Selling price of each CD = $5.00

Cost price of each CD = $1.25

Number of CDs ordered = 300

Profit must be at least $500.

To find:

The number of CDs needs to sell.

Solution:

Let n be the number of CDs needs to sell.

Selling price of each CD = $5.00

Selling price of x CDs = $5n

Cost price of each CD = $1.25

Cost price of 300 CDs = 300×$1.25

                                      = $375

We know that,

[tex]Profit=S.P.-C.P.[/tex]

[tex]Profit=5n-375[/tex]

Profit must be at least $500. it means profit must be greater than or equal to $500.

[tex]5n-375\geq 500[/tex]

[tex]5n\geq 500+375[/tex]

[tex]n\geq \dfrac{875}{5}[/tex]

[tex]n\geq 175[/tex]

All options are incorrect. The required inequality is n is greater than or equal to 175.

Help me please!...ffddfdf

Answers

Answer:

Radius:3.5 or 7/2

Diameter:7

Step-by-step explanation:

The diameter is given, and the radius is half of the diameter because it's from the middle of the circle to the edge. Divide 7 by two and you get radius

6) How are a parallelogram and a trapezoid different?
A A trapezoid has ony 1 pair of parallel sides, but a paralelogram has 2.
C.B.A parallelogram has 4 right angles, but a trapezoid doesn't need to have 4 right
angles
CA parallelogram has only 1 pair of parallel sides, but a trapezoid has 2
D A trapezoid has 4 night angles, but a parallelogram doesn't need to have 4 night
angles

Answers

Answer:

aa the first one

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

.Which point is located at (4, –2)?

On a coordinate plane, point A is 2 units to the left and 4 units up. Point B is 4 units to the right and 2 units down. Point C is 4 units to the left and 2 units up. Point D is 2 units to the right and 4 units down.
A
B
C
D

Answers

the answer is B; the first unit is a position 4 on the x axis, so it goes to the right by 4. -2, in the y axis, would go down. hope this helps!

Point B is 4 units to the right and 2 units down from the origin points.

What are coordinates?

A pair of numbers called coordinates are used to locate a point or a form in a two-dimensional plane. The x-coordinate and the y-coordinate are two numbers that define a point's location on a 2D plane.

Given, point is located at (4, –2)

Since on the option distance given is from Origin points,

Since we know in coordinates Plane.

X = 4 would be at 4 units right of the origin

y = -2 would be at 2 units down of the origin.

Thus point (4, -2) will be 4 units right and 2 units down from the origin.

Learn more about coordinates here:

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Question 6

Which measurements could not represent the side lengths of a right triangle?
A 5 cm, 3 cm, 4 cm
B 12 cm, 5 cm, 13 cm
C 3 cm, 2 cm, 1 cm
D 12 cm, 35 cm, 37 cm

Please Help

Answers

B and D those are the answers

i am really stuck in this one so help?

Answers

Answer: 7

Step-by-step explanation:

15-8 is 7

3
Select all the correct answers.
Which two punctuation marks are used to offset a parenthetical element in a sentence?
comma
semicolon
dash
o hyphen
Reset
Next

Answers

Answer:

problem

confusion

Step-by-step explanation:

hope it helps

Answer

problem and confusion

Step-by-step explanation:

I took the test and this is the correct answer

tell me if it is wrong :)

Taliyah plans to borrow $4,500 from the bank to purchase a used vehicle. If she borrows the money at a rate of 4% simple interest for 2 years, what is the total amount she will have to pay back to the bank?

Answers

Answer:ok

Step-by-step explanation: Siri, why am I still single?!” Siri activates front camera.

Answer:

9360

Step-by-step explanation:

4500*1.04(2)

The initial 4500 she borrowed times 1.04 (the increasing percent) times 2 (the number of years)

Hope that helps!

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