12r^2-11r-15=0 solve the equation for all real solutions

Answers

Answer 1

A=12 B=11 C=15

set up as

-11 (+,-) 11^2-12(15)

‐---------------------------

2(11)

there will be two answers exactly the same except one will be (+) & the other will have (-)


Related Questions

The circumference of a circle is 23 pi M what is the area in square meters express your answer in terms of pie

Answers

Answer:132.25π  m²

Step-by-step explanation:The circumference of a circle is 23π

On the other hand, The circumference of a circle = 2×π×r ; where r is the radius. Then by equating the last two expressions we get: 23π = 2πr then r = 23/2 then the area = π × r² = (23/2)²×π = (132.25)×π

MIDDLE SCHOOL MATH On the subway 8 out of 10 people are carrying a briefcase. Based on this information, if there are 700 people on the subway, then about how many do NOT have a briefcase?

Answers

Answer:

140

Step-by-step explanation:

If 8 out of 10 are carrying a briefcase, that means 2 out of 10 are not carrying one.

Use a proportion to find how many don't have a briefcase with 700 people

Let x represent the number of people without a briefcase:

[tex]\frac{2}{10}[/tex] = [tex]\frac{x}{700}[/tex]

Cross multiply and solve for x

10x = 1400

x = 140

So, 140 people do not have a briefcase

Answer:

140

Step-by-step explanation:

8/10 people, there's 700 people

10 multiplied by 70 =700.

2 people dont have briefcases = 2 times 70=140

X+1/2=x-1/2 true or false?

Answers

false bc 1/2 is positive and -1/2 is negative it’s not the same.

The area of a. square field is 100m square. what is the perimeter of the field?​

Answers

answer:the Perimeter is 40m

The sum of k and 8. what would the expression be?​

Answers

the expression for for the sum of k and 8 would be k+8
Sum is addition, so it would be k+8

2p – 194.99 = 284.97

Answers

If solving for p, it is 239.98 bc when 284.97+194.99, 2p=479.96

100 points What is the equation of the line that goes through (1,-1) and is parallel to y =
3x-3?
A. y+ 1 = 3(x - 1)
B. y+1=-}(-1)
C. y = 3x + 1
OD. y+1-}(x-1)

Answers

a is the answer. djjf

Mrs. Soto is putting 3 tables together to make 1 long table with a total length of 250 centimeters. The first table has a length of 83 centimeters. The second table has a length of 0.9 meter. How many meters (m) long is the third table?

Answers

Hello. I hope this helps!

Let's set up an equation for this.

1st table = 83 cm

2nd table = 90 cm OR 0.9 m

3rd table = x

Total length = 250

Equation:

83 + 90 + x = 250

Now we'll solve the equation.

83 + 90 + x = 250

173 + x = 250

x = 250 - 173

x = 77 cm

Among all rectangles that have a perimeter of 202, find the dimensions of the one whose area is largest. Write your answers as fractions
reduced to lowest terms.

Answers

Answer:

How to write by fraction? 50 1/2 by 50 1/2

Step-by-step explanation:

the maximum area for a rectangle is a square.

To find a square with p = 202, divide it by 4,

202 / 4 = 50.5

4÷2(4-6+3)×2 what is the answer​

Answers

Answer:

the answer is 4

Step-by-step explanation:

Answer: 4

Step-by-step explanation:

Evaluate m+n for m=5 and n=10

Answers

Answer:

15

Step-by-step explanation:

5 + 10 = 15

Evaluate 2x – 5y for x = 3 and y = –9.

Answers

Answer:

-2 or 2 i cant find the hole thing

Step-by-step explanation:

Order the following numbers from least to greatest: 2.74, 1/9, 4^2, -2^3, 32.5%,-6

Answers

Answer:

2

3

,

6

,

1

9

,

32.5

%

,

2.74

,

4

2

Step-by-step explanation:

Find the surface area of the prism? HELP I need the steps if possible

Answers

To find the surface area of a figure, find the area of all the shapes that make up the figure to get the area multiply Base by the height. First let's find the area of the rectangle  and the front that makes the ramp. To do this multiply 20 by 17 to get 340. Then let's get the area of the rectangle on the bottom by multiplying 15 by 20  to get 300. Now lets find the area of the rectangle in the back we will do this by multiplying 8 by 20 get 160. To get the area of a triangle multiply the base by the height and then divided by 2. so for one of the triangles let's multiply A perfect in which gives us 120 and divide that by 2 to get 60. because the other triangle has the same dimensions, the area of the other triangle will also be 60. now let's out of all the areas that we have from the shapes  which will be  340 + 300 + 160 + 60 + 60 which will give us 920 so the area of the figure is 920ft^2

(can i get brainelist pls)

BRAINLIEST HELP ASAP!!!

Answers

2 triangles with a base of 8 and height of 6 divide the base and height in half to get the Base and height of 1 triangle and then use 1/2 B•H to find the area of one triangle 1/2 (4•3) = 6

What is the answer please help no links I will report

Answer choices

Five days

Four days

Six days

Answers

Five days.

Monday, Tuesday, Wednesday, Thursday, and Saturday are all above 15 on the chart.
Five days because the whole week is above 15

These are all my points, if you can do every single question you will get 55 points
follow the screenshots. If that is not good enough let me know. I really need this

Answers

1) 6

2) 9

3) 7

4) 1

5) 8

6) 3

7) 0

8) 2

9) 4

10) 5

= REAL NUMBERS Evaluating a quadratic expression: Integers Evaluate the expression when n=4. n2-5n+6​

Answers

Since 2x4 is 8 and 5x4 is 20 if u did it all its -6

Answer:

-2

Step-by-step explanation:

I got it wrong and it told me negative 2 was the correct answer lol

Kirk's parents took him to the movies. His mother told him to sit in the front row in
the seat that occupied the median position. The first row in the theatre has 23 seats.
What seat did Kirk have to sit in?

A 12
B 23
C 1
D 11

Answers

A. 12

To be in the middle he will need 11 seats on either side of him which puts him in the 12th chair.
12! Have an amazing day! ☺️

The recipe makes 1 serving of punch. Sam used 2 cups of pineapple juice to make her punch, how many servings did she make? Use the equation 2/3m = 2 to find the number of servings.

2/3 cup = Pineapple juice
1/2 cup = orange juice
3/4 cup = Lemon/lime juice
1/3 cup = Ginger ale

Answers

Answer: 3 servings

Step-by-step explanation:

Sam used 2 cups of pineapple juice, one serving just needs 2/3 cups of pineapple. 2 divided by 2/3 equals 3 so, Sam made three servings. (in this case 1/2 cup orange juice 3/4 cup Lemon/lime juice 1/3 cup Ginger ale does not matter, you only need to know the pineapple juice.

what is the GCF of 90, 135, 225​

Answers

Answer:

45 I believe.* u no ketchup

A card is drawn at random from a standard deck. That card is not put back in the deck, and a second card is drawn at random from the remaining cards in the deck. Neither of the cards drawn so far are put back in the deck, and a third card is drawn at random from the remaining cards in the deck. What is the probability that the first card drawn is a spade, the second card drawn is a heart, and the third card drawn is a heart? Do not round your intermediate computations. Round your final answer to four decimal places.​

Answers

Answer:

The probability of the given scenario occuring is about 0.0153.

Step-by-step explanation:

A standard deck contains 52 cards.

We want the first card to be a spade. In a standard deck, 13 out of the total 52 cards are spades.

So, the probability that the first card is a spade is 13/52 or simply 1/4.

Now, we will draw a second card without replacing the first card. Since we did not replace the first card, the total amount of cards in the deck is now 51.

This time, we want a heart. 13 cards of the remaining 51 will be hearts. So, the probability that the second card is a heart is 13/51.

Now that we've drawn two cards without replacing them, the total number of cards left is 50.

And since we've drawn (or would like to have drawn) a heart as our second card, the total number of cards that are hearts is now 12.

Then the probability of the third card being hearts will be 12/50 or 6/25.

Then the probability that our first card is a spades, second card is a heart, and the third and final card is also a heart without any replacements will be:

[tex]\displaystyle P(\text{spade, heart, heart})=\frac{1}{4}\cdot \frac{13}{51}\cdot \frac{6}{25}=\frac{13}{850}\approx0.0153[/tex]

The probability of the given scenario occuring is about 0.0153.

Please solve this
I will mark you as brainleist
I will like your answer
I will give you five stars
I will follow you​

Answers

Answer: -5

= (-50 + 5)/9

= -45/9

= -5

Answer: -5

Step-by-step explanation:

-50+5= -45

-45/9= -5

PLEASE HELP! WILL GIVE BRAINLIEST! After substituting, what is the first step when evaluating 4y+9 when y=82 O Add 4 and 9. O Multiply 8 by 4. O Divide 9 by 7 O Divide 4 by 7.​

Answers

Answer:

The answer is c

Step-by-step explanation:

solve for a
-4a -2a -7=11​

Answers

Answer:

-3

Step-by-step explanation:

-4a - 2a - 7 = 11

-6a - 7 = 11                                      Combine coefficients.

      +7   +7

-6a = 18                                           Isolate the variable.

a  = -3                                 Divided by 6 on both sides to isolate the variable.

-3. add 7 to even and combine the like terms to get -6a=18. divide both sides by -6 to get a= -3

Find the volume of a cone with a base radius of 6 in and a height of 12 in. Write the exact volume in terms of , and be sure to include the correct unit in your answer.​

Answers

Answer:

we have

radius [r]=6in

height [h]=12in

Volume of cone = 1/3πr²h

Volume = 1/3 ×π × (6)² × 12=144πίn³or 452.38in³ is your answer.

A mans basic wage for a 40 hour week is 160 . He is paid 5 per hour for overtime .If he fors for 6.5 hours overtime in a certain week , his wages for that week is​

Answers

Answer: $192.50

Step-by-step explanation:

wages for 40 hrs + wages for overtime work

$160.00 + 6hrs × $5.00 + $2.50 (1/2 hrs)

$192.50

Credit: anjalijalan3126

Help me find the answer please

Answers

Answer:

60

Step-by-step explanation:

m∠1=(55+65)/2=60

9996666669999999999999 + 767859439234567890

Answers

Answer:

9.9974345e+21

Step-by-step explanation:

im a big brain

True or false: If your expression contains more than one set of parentheses, you should evaluate all of them before doing anything else.

Answers

Answer:

The answer to the above question would be true

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