Mathematics High School

Question Category: Solving Quadratic Equations by Factoring Select the correct answer. Find the solution to the equation below.2x^2 +3x - 20 = 0
A) x= -5/2, 4
B) x = -4, -3/2
C) x= -4, 5/2
D) x= -4, 3/2

Answers

Answer 1

Answer:

C. x = -4, 5/2

Step-by-step explanation:

Answer 2

Answer:

C.

Step-by-step explanation:

I did the quadratic formula, so 2 is A, 3 is B, and -20 is C. I got -4 and 5/2 as my answers...

(hope this helps :P)

Related Questions

Find the value of x.

Answers

X=4 (Option B)
The “c” is equal to 4sq.root2. In the rules and the diagram attached, the “c” side has the root 2 attached to the a, so the answer is 4.

can you help me please​

Answers

Answer:

the first one

Step-by-step explanation:

because you would use Pythagorean theorem to find a missing side

the equation would be a^2+b^2= C^2

and ya

please i need HELP x+y=15 , x-y=3
and

Answers

Answer:

x=9

y=6

Step-by-step explanation:

x+y=15 .............(i)

x-y=3...........(ii)

Subtracting equation (ii) from equation (i)

or,  x+y -(x-y)=15-3

or,  x+y-x+y=12

or,  2y=12

or,  y=12/2

∴y=6

Now,

       Putting the value of y on equation (i),

or,  x+6=15

or,  x=15-6

∴x=9

Bethany has $3.10 in nickels and dimes. She has a total of 44 coins. What is the value of the nickels Bethany has?

$0.90
$1.30
$1.80
$2.60

Answers

Answer:

b

Step-by-step explanation:

Answer:

B. $1.30

Step-by-step explanation:

help please ty i will give brainliest

Answers

Answer:

c

Step-by-step explanation:

b^2-4*a*c

81-20*4*1 =1

so you can factorise it to

(p+5) ( p+4 )

Mr. Kramer's patio is in the shape of a trapezoid. The trapezoid and its dimensions are shown below. What is the area of the patio? A 144 square feet B 360 square feet C 315 square feet D 252 square feet

Answers

Answer:

C 315

Step-by-step explanation:

(12 + 30) * 15/2 = 315

The area of the trapezoidal patio is 252 ft².

What is a trapezoid?

A trapezoid is a polygon that has only one pair of parallel sides. These parallel sides are also called parallel bases of trapezoid. The other two sides of trapezoids are non-parallel and called legs of trapezoids.

Given that, Mr. Kramer's patio is in the shape of a trapezoid, we need to find its area,

So, the area of the trapezoid is = sum of the parallel sides × height/2

= 12 + 30 × 12/2

= 42 × 6

= 252

Hence the area of the trapezoidal patio is 252 ft².

Learn more about trapezoid, click;

https://brainly.com/question/8643562

#SPJ3

Can someone help me with this please? its 1 question.

Answers

Answer:

D

Step-by-step explanation:

The answer is D because its the only graph that matches the actual description

Ethan bought a new pack of markers for $3. If he now has spent a total of $24 on art supplies, how much did he spend on supplies before he bought the markers?

Answers

it should be 21 dollars. since he paid a total of 24 including the markers and the markers are 3 dollars, tou would subtract the marker price from the total. 24-3=21

the difference between y and 20

Answers

Answer:

y + 20

Step-by-step explanation:

The other numbers are N

N - y = 20

N = y + 20

    OR

y - N = 20

N = y - 20

If d = the number of dogs, which variable expression represents the phrase
below?
the sum of the number of dogs and the 6 cats
O A. 046
O B. d+6
O C. d-6
O D. d.6

Answers

Option B. d+6

The number of dogs is a variable expression while the number of cats is a fixed expression

Which expression is equivalent to -3(1 - y) ?
0-31 - 3y
0-32 + 3y
0-32 - 4
0 -3.2 + y

Answers

Answer:

Whichever one equals 3y - 3

Step-by-step explanation:

I went through your answer choices and they don't really make sense. But if one of these equals 3y-3 then that's your answer.

10. What is 4/5 x 3/7?

Answers

Answer:

12/35

Step-by-step explanation:

you have to just multiply across

[tex] \frac{4}{5} \times \frac{3}{7} = \frac{12}{35} [/tex]

The answer as a fraction is 12/35

The answer as a decimal is 0.343

Pls help I don’t understand I’ll give brainliest

Answers

Answer:

[tex] - 32[/tex]

Step-by-step explanation:

1) Simplify

[tex] \sqrt{32} \: to \: 4 \sqrt{2} [/tex]

[tex] - 8 \sqrt{2} \times \frac{1}{2} \times 4 \sqrt{2} [/tex]

2) Use this formula: a/b × c/d = ac/bd.

[tex] - \frac{8 \sqrt{2} \times 1 \times 4 \sqrt{2} }{2} [/tex]

3) Simplify.

[tex] - \frac{32 \sqrt{2 \sqrt{2} } }{2} [/tex]

4)

[tex]simplify \: 32 \sqrt{2 } \sqrt{2} \: to \: 32 \sqrt{4} [/tex]

5) Since 2 × 2 = 4, the square root of 4 is 2.

[tex] - \frac{32 \times 2}{2} [/tex]

6) Simplify 32 × 2 to 64.

[tex] - \frac{64}{2} [/tex]

7) Simplify 64/2 to 32.

[tex] - 32[/tex]

Therefor, the answer is option three -32

An elephant at an animal sanctuary weighs 5.5 tons. He receives a daily nutritional supplement. The instructions say to give 1 fluid ounce of supplement for every 250 pounds of body weight.

How many fluid ounces of supplement should the elephant receive?

Answers

44 fl oz there are 2000 pounds in a tone for x amount of supplement… ( supplement volume)/(weight in pounds) = x/(5.5*2000)=1/250 multiplied by 11000
x=11000/250=44 fl
Answer:44 fl oz hoped that helped

Step-by-step explanation:

Help me please ........

Answers

Answer:

Step-by-step explanation:

what is the circumference of a DVD disc?

Answers

The circumference of a DVD disc is 28.26 cm

can you help me with my question​

Answers

Answer:

im pretty sure its undefined

Step-by-step explanation:

I'd say this because i don't believe you can do anything with the info they give you

help pls!!! im not sure on this

Answers

Answer:

10

Step-by-step explanation:

The answer is x=10 because you subtract both 80 and 40 from 180 using the triangle sum theorem with than remaining you should have 60. 60= 6x you divide that answer to get 10

How many square floor tiles of side 1/2m are needed to cover the school hall, excluding the room, shown in the diagram below. Please show ALL working.

Answers

Answer:

Step-by-step explanation:

which one should I choose

Answers

Answer:

Just choose the first one.

Answer:

FE

FG

AB

EG

AC

BC

step by step explanation:

A regular size chocolate bar is 5 and 4/9 inches long. If the king size bar is 3 and 2/5 inches longer, what is the length of the king size bar?

Answers

Answer:

8 38/45 inches

Step-by-step explanation:

A regular size chocolate bar is 5 and 4/9 inches long. If the king size bar is 3 and 2/5 inches longer, what is the length of the king size bar?

Let us represent:

Length of regular size chocolate bar = x

Length of king size chocolate bar = y

A regular size chocolate bar is 5 and 4/9 inches long.

x = 5 4/9 inches

If the king size bar is 3 and 2/5 inches longer,

Hence:

y = x + 3 2/5 inches

The length of the king size bar is calculated as:

5 4/9 inches + 3 2/5 inches

(5 + 3) + ( 4/9 + 2/5)

Lowest common denominator = 45

8 + (20 + 18/45)

8 38/45 inches

Which ordered pair is a solution of the equation?
3x+3y=-x+5y

Choose 1 answer:



(Choice A)


Only (1,2)


(Choice B)


Only (2,4)


(Choice C)


Both (1,2)s and (2,4)

(Choice D)


Neither

Answers

Answer:

thee ordered pair was both (1,2) and (2,4)

Find the inverse function in slope-intercept form
f(x)=4/5x-16

Answers

Y intercept slope - 5,0
X intercept slope - 0,-4

Please answer and if you do I'll give you brainliest. <3

Answers

Answer:

guy above me is right

Step-by-step explanation:

PLEASE HELPPPP! 50 points, my brain has been doing homework all night and this is simple math ;-; I just cant think rn its 7th grade math. Thanks a million!

Jamal reads every day. He read 55 pages on Tuesday, which is 25% less than what he read on Monday. How many total pages did Jamal read on Monday and Tuesday? Write solution as a mixed number.

Answers

Answer:

68/.75

‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎

A scatter plot is shown:
what type of association does the graph show between x and y? (4 points)

Linear positive association

Nonlinear positive association

Linear negative association

Nonlinear negative association

Answers

Answer:

linear positive

Step-by-step explanation:

it's prolly too late but i need pts and someone to answer my ? so yea

Answer:

Step-by-step explanation:

Linear Postive

Select all irrational numbers, o​

Answers

Answer:

A & D

Step-by-step explanation:

took

what is the answer plz help​

Answers

Answer:

I would say c. Because if you add the 12 to each if the x numbers it adds up to be correct

Answer:

C. y = x + 12

Step-by-step explanation:

As,

y : 14 = 2 (x) + 12

y : 16 = 4 (x) + 12

y : 18 = 6 (x) + 12

y : 20 = 8 (x) + 12

Please help! Will mark brainliest

Answers

Answer: The answer would be 2!

Step-by-step explanation:

Hope this helps! Have a good day! :)

Answer:

10

Step-by-step explanation:

you need to group the number with letters at one side so it becomes 5x≤7+3 when 3 crosses th enequality sign it becomes positive so the answer is 5x≤10

Theo bought a pair of shoes on sale for 20% off the regular price. A
6.50 sales tax was added to the price of the shoes. Which expression
represents the total cost of the shoes with original price s?
A) (0.2s)1.065
B) (0.8s)1.065
C) 0.83 + 1.065s
D) 0.2s + 1.0655

Answers

Answer:

c

Step-by-step explanation:

i think soo

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