Find the discriminant.
x2–3x–9=0

Answers

Answer 1

Answer:

45

Step-by-step explanation:

The discriminant is b^2 - 4(a)(c) so just plug all the values in.

(-3)^2 - 4(1)(-9) = 45


Related Questions

Find the length of the missing hypotenuse of the right triangle.
15m is left side , 8m is on bottom

Answers

hypotenuse is 17m

a² + b² = c²
8² + 15² = c²
64 + 225 = c²
289 = c²
√289 = √ c²
17 = c

A piece of fabric shaped as a trapezoid has a
height of 14 inches, and bases that measure
16 inches and 9 inches. What is the area of
the fabric?​

Answers

Answer:

Area of the fabric = 175 square inches

Step-by-step explanation:

Area of a trapezoid = (b1 + b2)/2 * h

Where,

b1 = 16 inches

b2 = 9 inches

h = 14 inches

Area of a trapezoid = (b1 + b2)/2 * h

= (16 + 9)/2 * 14

= 25/2 * 14

= 12.5 * 14

= 175 square inches

Area of the fabric = 175 square inches

Ben's favorite number is equal to 2 less than 10 times Sam's favorite number. The table shows how the favorite
number of Ben, b, depends on the favorite number of Sam, s. Choose the equation which represents the rule.

Answers

Answer:

C

Step-by-step explanation:

Hope it helps, Good Luck!!!!

Calculate the volume.
Plz hurry!! 40 points in it!!

Answers

Answer:

tell me the decimals number form

Step-by-step explanation:


A triangle was translated 4 units down.
In the graph, which figure is the pre-image and which
figure is the image?
O AFGH is the image and A ABC is the pre-image
AFGH is the pre-image and AABC is the image.
Both triangles are images.
The image cannot be determined from the graph.

Answers

Given:

A graph that contains image and preimage.

To find:

Which figure is the preimage and which figure is the image.

Solution:

Initial figure is known as preimage and translated figure is known as image.

It is given that a triangle was translated 4 units down. It means, the upper triangle is preimage and the lower triangle is the image.

So, ΔFGH is the pre-image and ΔABC is the image.

Therefore, the correct option is B.

the answer is B :0

i got it right on my assignment !!!!

True or False? A right triangle can have a leg measuring 10cm and a hypotenuse measuring 10cm

Answers

True, and it's called an isosceles right triangle :D

Three girls (Zeva, Abby and Jenny) went to a hair salon. Each girl had their hair styled (curly, straight, and wavy) and colored (blonde, red, and black). From the clues below, which chart correctly matches the girl, the hairstyle and the color?

Answers

That doesn’t make sense? Do u mean like guess on what their hair color and style could be

Answer:

You need to make the question again and include the chart.

Step-by-step explanation:

a box of socks contain 5 white socks 3 grey socks 4 black socks and 1 blue sock. is Sophie closes her eyes and randomly pick two socks from the box what is the probobility that both socks are grey

Answers

Answer:

3 out of 13 chance of getting grey socks

A $400 deposit for 7 years at a compound interest rate of 2%

Answers

Answer:

The final balance is $853.63.

The total compound interest is $453.63.

The compound interest on initial balance is $59.47.

The compound interest on additional deposits is $394.16.

The final balance of initial money is $459.47.

The final balance of additional deposit is $394.16.

The sum of the additional deposits is $0.

The total principal (initial balance plus total additional deposits) is $400.

Step-by-step explanation:

with the information you provided

choose as brainliest

What is 3 x 4t when it’s simplify


Answers

Answer: 12t

3 x 4t = 12t

please help quick!! you may have to zoom in on the picture, thanks!! :)

Answers

Answer:

Step-by-step explanation:

The radius of the circle would be the segment joining QR.

r^2=12^2+9^2

r^2=225

Since the area of a circle is pi r^2

A=225 pi which is answer D.

Lee wants to buy four tee shirts,
which were originally priced $12.94
each. He purchases four shirts at the
"Buy One Get One 50%" sale and pays
6.2% tax on the total cost of the
shirts. Including the tax, what will be
the cost of each shirt?

Answers

Answer:

$27.48

Step-by-step explanation:

He buys 1 shirt at 12.94 and gets one at 6.47

He does this 2 times and the total is 25.88

That times 1.062 to factor in the 6.2 percent tax rate is 27.48

So first you do:

.5 x 12.94=6.47

Next:

6.47 x 2=12.94

Then:

12.94 x 3=38.82

Now you have to do the tax:

38.82 x .062=2.41

After you get the answer for tax you have to add that to the price with out tax:

So, 38.82+2.41

=41.23

So you answer is 41.23 including the discount and tax

The scale used on a map of Alaska indicates that a length of 3 inches represents a distance of 75 miles. What distance is represented by a length of 6 inch on the map?

A. 25 miles
B. 37.5 miles
C. 150 miles
D. 470 miles​

Answers

Answer:

s

Step-by-step explanation:

s

Answer:

C

Step-by-step explanation:

3 inches= 75miles

6 inches would be 75+75= 150 miles

Surface Area Math Question

Answers

Answer:

#ثوره_طلابية غاضبة على قرار وزاره التعليم العالي باصدارها القرار المجحف وعليه يبداء من الان الاعتصام الطلاب #والاضراب_عن_الدوام لحين تحقيق المطالب.

تعليم الكتروني = امــتـحـان الكتروني

تعليم حضوري = امــتـحـان حضوري

• Saphia is organising a conference.
People at the conference will sit at circular tables.
Each table has a diameter of 140 cm.
Each person needs 60 cm around the circumference of the table.
There are 12 of these tables in the conference room.
A total of 90 people will be at the conference.
Are there enough tables in the conference room?

Answers

Answer:

No

Step-by-step explanation:

The helicopter can travel 75 miles per hour. How many miles per minute can the helicopter travel?

Answers

Answer:

4.69 miles per minute

Step-by-step explanation:

75 ÷ 60 (60 minutes in an hour) = 4.6875

4.6875 rounded to the nearest hundredth is 4.69

A pyramid and a cone are both 10 centimeters tall and have the same
volume. What statement must be true about the two solids?

A. The vertical cross-sections of the pyramid and cone at the same
width must have the same area,
B. The area of the cross-sections of the pyramid and cone are
multiples of each other,
C. The horizontal cross-sections of the pyramid and cone at the
same height must have the same area
D. The cross-sections of the pyramid and cone are the same shape

Answers

9514 1404 393

Answer:

  C. The horizontal cross-sections of the pyramid and cone at the same height must have the same area

Step-by-step explanation:

Cavalieri's principle says that solids with corresponding cross sections of the same area will have the same volume. Statement C is the converse of this principle.

A swimming pool is shaped like a cylinder with a radius of 15 feet and a height of 6 feet

Answers

Answer:

4239 cubic feet

Step-by-step explanation:

V=[tex]\pi[/tex][tex]r^{2} *h[/tex]

V=3.14*225*6

V=3.14*1350

V=4239

Will give brainliest

Answers

Answer:

steps attached

Step-by-step explanation:

how many solutions does 2x+6=7x5 have

Answers

Answer:

14.5

Step-by-step explanation:

2x=7*5-6 will be 14.5

Answer:

One solution.

Step-by-step explanation:

Since the right side of the equation is a constant, there can only be one solution:

[tex]2x+6=7*5[/tex]

[tex]2x+6=35[/tex]

[tex]2x=35-6[/tex]

[tex]2x=29[/tex]

[tex]x=14.5[/tex]

14.5 is the only answer.

John eats 0.3 ounces of cake for breakfast each day for 30 days. How many ounces of cake will he eat for 15 day.

Answers

Answer:

He will eat 4.5 ounces of cake over a 15 day span.

Step-by-step explanation:

It's just multiplication. 0.3 x 15

There are 230 cal in 4 ounces of a type of ice cream how many calories are in 6 ounces of that ice cream

Answers

There are 345 cal in the 6 ounces of that ice cream

Answer:  345 cal

Step-by-step explanation:

Solution 1:

230/4 = x/6

4x = 6(230)              use cross multiply

4x = 1380

x = 345 cal

Solution 2:

Cal in 1 ounces: 230/4 = 57.5cal/ounces

Cal in 6 ounces: 57.5cal/ounces x 6 = 345 cal

Find the independent and dependent variable in the following word problem: " Students at the Norwood High School homecoming dance always get their pictures taken. The number of pictures the photographer will take is determined by how many students are attending the dance.

Answers

Answer:

Step-by-step explanation:

....................................................

A watch I bought
for £1500
increases in value
by 9% a year for n
years.
Work out how
years it would take
to double my
money.

Answers

Answer:

About one year

Step-by-step explanation:

1500*0.9=1350

Suppose that an individual has a body fat percentage of 18.9% and weighs 141 pounds. How many pounds of her weight is made up of fat? Round your answer to the nearest tenth.

Please respond within the hour
Thanks

Answers

here is the proportion I used to get the answer. hopefully this helps

Fill out the chart representing the trig values of quadrant 1 of the unit circle (picture included)​

Answers

I hope this chart helps you :)) I just looked up unit circle values in table!

Suppose you know the total cost of the gas but do not know the price per gallon.
Explain how you would work backward to find the cost per gallon.

Answers

9514 1404 393

Answer:

  price per gallon = (total cost)/(number of gallons)

Step-by-step explanation:

Price per gallon is found by dividing the price by the number of gallons:

  price per gallon = (total cost)/(number of gallons)

can someone do this for me

Answers

It’s to blur can u maybe take any other pic

Assume that the college in Offer #1 has a Cost of Attendance of $73,332. Which of the statements below comparing Offer #1 to Offer #2 is TRUE?

College #1 has a lower “cost of attendance” than College #2


Both College #1 and College #2 have the same “net price”


College #1 has a lower “net price” than College #2


College #1 has a higher “net price” than College #2

Answers

Answer:

Both College #1 and College #2 have the same “net price”

This is going by the fact that the equivalent money which happens to remain after all the deductions had been made are same. The gross amount, though quite different happens to be same in the available net amount for same education cost in both college.

Step-by-step explanation:

If 400,000 tourists contribute $67 million to a local economy, how much would 600,000 tourists contribute?

Answers

Answer:

[tex]100.5\ \text{million}[/tex] is contributed by 600,000 tourists.

Step-by-step explanation:

Given that,

400,000 tourists contribute $67 million to the local economy.

We need to find how much would 600,000 tourists contribute.

400,000 tourists = $67 million

1 tourist = [tex](\dfrac{67}{400,000 })\ \text{million}[/tex]

So, 600,000 tourists contribution is :

[tex]600000\ \text{tourists}=(\dfrac{67}{400,000 })\times 600000\ \text{million}\\\\=100.5\ \text{million}[/tex]

Hence, [tex]100.5\ \text{million}[/tex] is contributed by 600,000 tourists.

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