Question
Use the discriminant to determine the number of real solutions to the quadratic equation.
-2a^2 – 11a – 10 = 0
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Previous

Answers

Answer 1
There are only 2 real solutions to the equation

Related Questions

Pls help me with this one!! :)

Answers

Step-by-step explanation:

no picture just uploade again

Simplify the equation 3x-4+2=-2x-5+5x Down to its simplest form do not solve the equation
NEED THIS BEFORE 11:59 TODAY!!!

Answers

Answer:

the answer is 6x-7

Step-by-step explanation:

3x-4+2-2x-5+5x

3x-7-2x+5x

3x-7-2x+5x=

6x-7

3x-4+2=-2x-5+5x
3x-2=3x-5
3x+3=3x
x+1=x

Diver Dan enjoys scuba diving. He dives to 34 feet below the surface of a lake. His friend "Jump in Jeff" dives to 40 feet below the surface, but then descends 20 feet. What is the vertical distance between Dan and Jeff?

Answers

the distance between Dan and jeff is 26 feet

1. Solve for y. -12 - 3y > -6x
show work for brainliest​

Answers

Solve for y

Solution

[tex] - 12 - 3y \geq - 6x \\ - 12 - 3y + 12 \geq - 6x + 12 \\ - 3y \geq - 6x + 12 \\ = \frac{ - 3y}{ - 3} \geq \frac{ - 6x + 12 }{ - 3} \\ y = 2x - 4 [/tex]

Answer: y = 2x - 4

Correct me if I'm wrong

I hope it helps ^_^

The point P(8,-3) lies on the curve with equation y=f(x). Find the image of P on the curve with equation y=f(x-4).

Answers

Answer:

(12, -3)

Step-by-step explanation:

Add 4 to x value because it is a horizontal translation right 4.

35 is what percent of 65?​

Answers

Answer:

53.846153846154%

Step-by-step explanation:

Answer:

35/65 x 100 = about 53.85

Please help! Question is in picture. I will give Brainliest!!

Answers

Answer:

(d) They may be combines

Step-by-step explanation:

Given

[tex]6\sqrt{32} - 12\sqrt{72}[/tex]

Required

Which option is true

Express 32 as 16 * 2 and 72 as 36 * 2

[tex]6\sqrt{32} - 12\sqrt{72} = 6\sqrt{16 * 2} - 12\sqrt{36 * 2}[/tex]

Split

[tex]6\sqrt{32} - 12\sqrt{72} = 6\sqrt{16} * \sqrt{2} - 12\sqrt{36} * \sqrt{2}[/tex]

This gives:

[tex]6\sqrt{32} - 12\sqrt{72} = 6*4 * \sqrt{2} - 12*6 * \sqrt{2}[/tex]

[tex]6\sqrt{32} - 12\sqrt{72} = 24 * \sqrt{2} - 72 * \sqrt{2}[/tex]

[tex]6\sqrt{32} - 12\sqrt{72} = 24 \sqrt{2} - 72 \sqrt{2}[/tex]

Since both term have the same radicand, then:

[tex]6\sqrt{32} - 12\sqrt{72} =( 24 - 72 )\sqrt{2}[/tex]

[tex]6\sqrt{32} - 12\sqrt{72} =-48\sqrt{2}[/tex]

Option (d) is correct

Tell which set or sets the number below belongs​ to: natural​ numbers, whole​ numbers, integers, rational​ numbers, irrational​ numbers, or real numbers. 0

Answers

Answer:

if what you're asking if 0 belongs to anyone of the sets then zero belongs to whole numbers.

whole numbers is 0,1,2,3,4 etc

Natural numbers are 1,2,3,4 etc

integers are -3,-2,-1,0,1,2,3 etc

rational numbers are like fractions etc

irrational numbers are when you don't necessarily get a exact or whole numbers for example like π/pie

negative numbers that equal -60? (I need number that multiple That equal -60)

Answers

Answer:

-5 x -12

Step-by-step explanation:

i don’t understand, do u want 2 factors that are both negative equaling -60? i don’t think that’s possible seeing as though a negative times a negative is a positive

pls tell me what is 152 + 466

Answers

The answer is 618

152

+

466

——-

618

Hope I helped you! :]

Step-by-step explanation:

152 + 466=618 is your answer

3. What three numbers are the Pythagorean triple generated by using 4 for x and 1 for y. Remember to use the formulas:
a = x2 - y2, 6 - 2xy, and C = x2 + y2
O 6, 8, and 10
O 5, 11, and 12
O 8, 15, and 17
O 3, 5, and 8

Answers

Given:

The three equations for the three numbers are

[tex]a=x^2-y^2[/tex]

[tex]b=2xy[/tex]

[tex]c=x^2+y^2[/tex]

To find:

The Pythagorean triple generated by using 4 for x and 1 for y.

Solution:

Substituting x=4 and and y=1 in the given equations, we get

[tex]a=4^2-1^2[/tex]

[tex]a=16-1[/tex]

[tex]a=15[/tex]

In the same way find b and c.

[tex]b=2(4)(1)[/tex]

[tex]b=8[/tex]

The third number is

[tex]c=4^2+1^2[/tex]

[tex]c=16+1[/tex]

[tex]c=17[/tex]

The required Pythagorean triple is 8, 15, and 17.

Therefore, the correct option is C.

Evaluate the expression when x=2 and y=9.
45/y - x

Answers

Answer:

Step-by-step explanation:

Example 1:

Evaluate the following expression:

4 + (3x +y)

When x = 2 and y = 9

3 x 2 is 6 after that you just add 6+9+4 which is 19

Example 2:

Evaluate the expression when x=8 and y=9

x(y - 9)^3 + 2

=8(9-9)^3+2

=8(0)^3+2

=8(0)+2

=0+2

=0

I hope this helps :)

small refrigerator is a cube with a side length of 15 inches.

Use the formula S = 6s2 to find the surface area of the cube.

Answers

Answer: 1350

Step-by-step explanation:

6*15^2=1350 in

A=1350 in

The surface area of the cube is 1350 in.

Find the area of the shaded region.
8
Area of shaded region = Area of circle - Area of Triangle
A=
square units
Note: Round to the tenth place.
9

Answers

Answer:

????????????......???????.

Kari makes a wage of $10.25/ hour.
a. If “p” represents her total pay and “t” represents the time she works in hours, write an
equation to represent her pay.

Answers

Answer:

p = t X 10.25

Step-by-step explanation:

if she makes 10.25 an hour/time then when you multiply it you will get the total pay.

I've been working on a desmos project with a code of, swwwowuqkm, awhile but, I seem to be missing something. If you could please finish line 20, between lines 19 and 21, in a similar fashion to line 22, between lines 18 and 23. It would be much appreciated if you could also explain what I was missing.

Answers

code is incorrect, maybe show a picture and i could help

PLS HELP ASAP, WILL MARK YOU BRAINLIEST!!!!

Answers

Answer:

Try looking at each angle and add the sides

Step-by-step explanation:

21.50 x y = 225
what is y?
I need help, please

Answers

Answer:

10.5

Step-by-step explanation:

225÷21.50

=10.46511

=10.5(3sf)

10.47 ( 2 decimal point )

Please helpp!! I need help placing and label the following numbers on the number line

Answers

-1 goes on the number that is -1.
1.75 goes on the 3rd line in between 1 and 2.
-2 goes on the number -2.
-2 1/2 on the 2nd line after 2.
-5/2 or -2 1/2 goes on the 2 line before -2.
And 9/4 or 2 1/4 goes on goes on the 1st line after 2.

Hope this helps!! :)

A student decides to spin a dime and determine the proportion of times it lands on heads. The student spins the dime 25 times and records that it lands on heads 17 times. He decides to spin the dime again and spins it 100 times. Which of the following is a correct statement about the variability of the sampling distribution?

Since the sample size is increased, the variability will increase.
Since the sample size is increased, the variability will decrease.
Since the sample size is increased, the variability of the population will increase.
Since the sample size is increased, the variability of the population will decrease.

Answers

Answer:

Since the sample size is increased, the variability will decrease.

Step-by-step explanation:

took the quiz

how many hours are in a second and is it bad to have to many chromosomes because I have a couple extram​

Answers

Answer:

do you mean seconds in an hour?

Step-by-step explanation:

a square field has a perimeter of 48cm find the area of the field​

Answers

Answer:

2,304

Step-by-step explanation:

u multiply one length by it widgth so 48 x 48

Answer:

144 m

Step-by-step explanation:

Here , The perimeter of a square=48 m.

Area=?

Since,each side of a square= perimeter/4

=48/4

=12m.

Hence, the area of the square=(side)²

=(12)².

=144 m² Ans.

HELP PLS
determine the measure of angles A and B

Answers

Answer:

Angle A is 52 degrees           Angle B is 78 degrees

Step-by-step explanation:

The angles all have to add up to 180.

2x + 3x + 50 = 180

5x + 50 = 180

Subtract 50 from both sides

5x = 130

Divide each side by 5

x = 26

Solve

A) 2 * 26 = 52

B) 3 * 26 = 78

--------Check--------

52 + 78 +50 = 180

180 = 180

Please help me with this. I dont understand it at all and need it done by Monday. Thank you so much.

Answers

Answer:

1. draw a circle inside the triangle

2. draw a circle through those dots

3. draw a circle outside the triangle but through the dots

4. create a triangle with the same angle and length and draw a circle inside that triangle

5. Draw a right triangle (with 90 degrees; could be 45-90-45 or 30-60-90)

a. hypotenuse is the diameter of the circle

b. hard to explain but it should look like this: (link)

In the ordered pair (2, 3), what is the x-coordinate? y-coordinate?

Answers

Answer:

2 = x- coordinate

3 = y coordinate

Step-by-step explanation:

REMEMBER: In an ordered pair, the x-coordinate always comes first.

A 4-foot piece of string costs $0.96. What is the price per inch?

Answers

It’s gonna be $0.02 per inch

Answer:

2 cents/inch

Step-by-step explanation:

12 inches in a foot, 4 feet: 12*4 = 48 inches

.96/48 = .02

Solve using law of sines, find the area of wxy.

Answers

Answer:

area = 828.27 cm²

Step-by-step explanation:

add a line from X, perpendicular to WY, call this point A.

angle Y = 180 - 33 - 121 = 26 degrees

sin 26 = XA/49

0.4384 = XA/49

XA = 21.48 which is the height of the triangle

cos 26 = YA/49

0.8988 = YA/49

YA =  44.04

tan 33 = 21.48/WA

0.6494 = 21.48/WA

WA = 33.08

YW = 77.12

(YW)(XA)(0.5) = area

(77.12)(21.48)(0.5) = area = 828.27 cm²

Bags of sugar come in 3 sizes:

Small bag: A 250 g bag costs 95p.
Medium bag: A 500 g bag costs £1.80.
Large bag: A 3 kg bag costs £3.70.

Calculate the cost of 3 kg for the small and medium bags.
Give your answer in pounds to 2 dp.
Write the bag that is the better value in the comments

Answers

Answer:

Medium

Step-by-step explanation:

The computation is shown below:

The cost for the small and medium bag is shown below:

As we know that

1kg = 1000g

So 3kg = 3000g

Now for small bags

= 0.95 ÷ 250 × 3000

= £11.40

For medium bags

= £1.80 ÷ 500 × 3000

= £10.80

So here the medium bag would represent the better value

Cos A= 0.4848
A) 61
B)44
C)82
D)54

Answers

Answer:

A 61

Step-by-step explanation:

Cos A = 0.4848

A = cos ^-1(0.4848)

A = 61

Is A. Because I did that already

If lines a and b are parallel, which of the statements is true?

Answers

Answer:

can i see the rest of it

Step-by-step explanation:

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