Solve the quadratic equation 2x2 = 5x + 9. <33 please besties

Answers

Answer 1

Answer:x=-1

Step-by-step explanation:


Related Questions

Stefan has a bag that contains 3 blue marbles and 5 red marbles only.What fraction of the marbles in the bag are blue?

Answers

Answer:

3/8

Step-by-step explanation:

vecause there are 8 in total and 3 of them are blue.

hope this helps

3/8! This is because if he were to have 3 blue and 5 red and added them you’d get 8, in which that’s the denominator, your numerator will be the amount of blue marbles making the answer 3/8

Which of the following is the additive inverse of
1/2

Answers

Answer:

2

Step-by-step explanation:

1/2 x 2 = 1

Answer:

2

Step-by-step explanation:

beacuse 2/1 is actually 2

I will give brainleist pls

Answers

Answer:

C

Step-by-step explanation:

We can immediatly rule out A and B because the Quotient is bigger than the Divisor.

We can then rule out D because 2,016 does not round to 2,200.

The answer is C. 2,184 can round to 2200 and the Divisor is bigger than the quotient.

Answer:

C

Step-by-step explanation:

This is quite simple as we can find the answer out on the first hint itself. The first hint says the divisor, 2 number in the equation or number you are dividing by, can be rounded to 50, which means it is in the range of 45-54. We can see the only divisor in that range is C. To go with the other hints, though, the dividend, first number, can be rounded to 2,200 which means it is in the range of 2,151-2,250. All of them pass that, so on to the next hint. It says the quotient, number you get as answer, is smaller than the divisor, which we found is in the range of 45-54. Answer choices A and B do not follow this as the divisors of their equation are obviously smaller than the quotient, so we can conclude C to be our answer

I need help pleaseee​

Answers

Answer:

H

Step-by-step explanation:

Someone please help me! I really need help I’ll mark brainliest

Answers

Answer:

it is B

Step-by-step explanation:

trust me i know this is right 100%

I am pretty sure it’s B! I had this question before so It should be B

Find the value of x.

Answers

Answer:

13.8

Step-by-step explanation:

https://www.calculator.net/triangle-calculator.html

It gives you everything you need to know about the triangle

13 . 8 your welcome

Which fraction is equivalent to 2/3? A. 4/9 B. 18/21 C.6/8 D. 16/24

Answers

Answer:

16/24

Step-by-step explanation:

2 x 8 = 16

3 x 8 = 24

A certain test preparation course is designed to help students improve their scores on the USMLE exam. A mock exam is given at the beginning and end of the course to determine the effectiveness of the course. The following measurements are the net change in 3 students' scores on the exam after completing the course:
15,20,18
Using these data, construct a 90% confidence interval for the average net change in a student's score after completing the course. Assume the population is approximately normal.

Answers

Answer:

The 90% confidence interval for the average net change in a student's score after completing the course is (13.42, 21.92).

Step-by-step explanation:

Average change in the sample:

[tex]M_{s} = \frac{15+20+18}{3} = 17.67[/tex]

Standard deviation of the sample:

[tex]s = \sqrt{\frac{(15-17.67)^2+(20-17.67)^2+(18-17.67)^2}{2}} = 2.52[/tex]

We have the standard deviation for the sample, so the t distribution is used.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 3 - 1 = 2

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 2 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.9}{2} = 0.95[/tex]. So we have T = 2.92

The margin of error is:

[tex]M = T\frac{s}{\sqrt{n}} = 2.92\frac{2.52}{\sqrt{3}} = 4.25[/tex]

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 17.67 - 4.25 = 13.42

The upper end of the interval is the sample mean added to M. So it is 17.67 + 4.25 = 21.92

The 90% confidence interval for the average net change in a student's score after completing the course is (13.42, 21.92).

The perimeter of any polygon is the?
Choose a right answer :
a) Product of all the sides.
b) sum of the all sides.
c) sum of any two sides.
d) sum of the diagonals.​

Answers

Answer:

B

Step-by-step explanation:

perimeter is the sum of all sides. it's the distance around the figure.

Madeline deposited $750 into an investment account that earns 1.5% interest compounded annually. If no deposits nor withdrawals are made, how much in dollars will be in the account after 15 years?
A $1,687.50
B $937.67
C $918.75
D $870.40

Answers

B $937.67 is the correct answer

The figure below consists of a triangle, a rectangle, and a trapezoid.
What is the area of the figure in square units?
A. 39
B. 37
C. 49
D. 42

Answers

Answer:

Area of the figure = 39 square units

Step-by-step explanation:

Find the diagram attached

Area of the triangle = 1/2 * base * height

Base of triangle = 4

Height = 1 + 5  = 6

Area of the triangle = 1/2 *4 * 6

Area of the triangle = 12units²

Area of rectangle = Length * Width

Length = 4

Width = 5

Area of rectangle = 4 * 5

Area of rectangle = 20units²

Area of trapezoid = 1/2(a+b)*h

a and b are the parallel sides

h is the height

a = 2

b = 5

h = 6-4 = 2

Area of trapezoid = 1/2(2+5)*2

Area of trapezoid = 1/2*7*2

Area of trapezoid = 7units²

Area of the figure  = Area of the triangle +Area of the rectangle + Area of the trapezoid

Area of the figure = 12 + 20 + 7

Area of the figure = 39 square units

math question helppppppppp

Answers

Answer:

it would be 17 m second one is 20inch third one is 6 meters

Step-by-step explanation:

np give it a heart

Answer:

1st) area = 12 x 3.7 = 44.4 m²

2nd) area = 24 x 18 = 432 in²

3rd) area = 7.3 x 5 =36.5 m²

Step-by-step explanation:

What is the value of the following
expression when d=2?

3d + (2.d)-4

Answers

Answer:

6

Step-by-step explanation:

I used a calculator and the answer is 6

PLEASE HELP !!!!!!!!!!!!

Answers

9514 1404 393

Explanation:

The figure will be a rectangle only if the angles between adjacent congruent sides are 90°.

__

Attached is an example of a quadrilateral with 3 congruent sides. It is not a rectangle, but could be an isosceles trapezoid if the top and bottom sides were parallel. It would be a parallelogram (rhombus) if opposite congruent sides were parallel.

Each interior angle of a regular nonagon has a measure 13x+10°. What is x?

Answers

Answer:

Step-by-step explanation:

A nonagon has nine sides.

The sum of exterior angles = 360°, so each exterior angle is 360°/9 = 40°.

Each interior angle = 180°-exterior angle = 140°.

13x + 10° = 140°

x = 10°

Easy question look at photo

Answers

Answer:

I would go with yes, since we know BC=UV

Step-by-step explanation:

Suppose a 16-sided die was rolled. Fill in the information [6 mks]

a. The probability of rolling a number greater than but not equal to 10 is _______ as a fraction, as a ratio _______ and as a percentage ____________

b. The odds in favour of rolling an even number less than or equal to 7 are ____ : ____ whereas the odds against rolling an even number less than or equal to 7 are ____ : ____

c. What are the odds in favour of rolling a number less than 5? ____ : ____

Answers

Answer:

No idea

Step-by-step explanation:

Problem 1.(32 points) A random sample of 100 Uber rides in Chicago has on average 5.4miles per ride. Assume the distribution of the distance of Uber rides to be approximatelynormal with a standard deviation of 1.3 miles.(a) (5 points) Construct a 99% confidence interval for the average distance (in miles) ofan Uber ride. (round to one decimal place)(b) (4 points) What can we assert with 99% confidence about the possible size of our errorif we estimate the average distance of an Uber ride to be 5.4 miles

Answers

Answer:

a) CI = ( 5,1 ; 5,7 )

b) SE =  0,1  

Step-by-step explanation:

a) Sample random     n  = 100

Mean  =  μ = 5,4

Standard deviation   s = 1,3

CI = 99 %    α = 1 %   α = 0,01     α/2 =  0,005

z(c) for  0,005 is from z-table    z(c)  = 2,575

z(c)  =  ( X - μ ) /s/√n          CI  =  μ ± z(c) * s/√n

CI =  5,4 ± 2,575* 1,3/10

CI = 5,4 ± 0,334

CI = ( 5,1 ; 5,7 )

b) SE = Standard deviation / √n

SE = 1,3 /10       SE =  0,1  

We can support that with 99 % of probability our random variable will be in the CI.

The graph below shows how the monthly rent for an apartment changed over time

Answers

Answer:

Its C. If you look at the graph and match it with the years it increases by 50

Step-by-step explanation:

Urn 1 contains 3 blue tokens and 2 red tokens; urn 2 contains 2 blue tokens and 4 red tokens. All tokens are indistinguishable. You roll a die to determine which urn to choose: if you roll a 1 or 2 you choose urn 1; if you roll a 3, 4, 5, or 6 you choose urn 2. Once the urn is chosen, you draw out two tokens at random from that urn (no replacement). How many possible outcomes are possible

Answers

Answer:

RR = 0.4

RB = 0.3

BB = 0.22

BR = 0.30

Step-by-step explanation:

P( Urn 1 ) = 2/6 = 1/3

P( Urn 2 ) = 1 - 1/3 = 2/3

Urn 1 contains : 3 blue and 2 red

P( blue | urn 1 ) = 3/5 ( with replacement ) , P( blue | urn 1 ) = 3/4 ( without replacement )

P( red | urn 1 ) = 2 / 5 ( with replacement ) , P(red | urn 1 ) = 1/2 ( without replacement )

Urn 2 contains : 2 blue and 4 red

P ( blue | urn 2 ) = 1/3 ( with replacement ) , P( blue | urn 2 ) = 2/5 ( without replacement )

P ( red | urn 2 ) = 2/3 ( with replacement) , P( red | urn 2 ) = 4/5 ( without replacement )

Determine

i) Possible outcomes when two tokens are drawn from either Urn without replacement

RR = [[ ( 2/5 * 1/3 ) + ( 2/3 * 2/3 ) ] * [( 1/2 * 1/3 ) + ( 4/5 * 2/3 ) ]] = 0.4

RB = [[ (2/5 * 1/3 ) + ( 2/3 * 2/3 ) ] * [ ( 3/4 *1/3 ) + ( 2/5 * 2/3 ) ]] ≈ 0.3

BB = [[ ( 3/5 * 1/3 ) + ( 1/3 * 2/3 ) ] * [ ( 3/4 *1/3 ) + ( 2/5 * 2/3 ) ]] ≈ 0.22

BR = [[ ( 3/5 * 1/3 ) + ( 1/3 * 2/3 ) ] * [ ( 1/2 * 1/3 ) + ( 4/5 * 2/3 ) ]] ≈ 0.30

MUST HELP!!!! (+10 POINTS +BRANILEST +5 STARS +THANKS ON PROFILE)

any absurd answers will result in a ban.

Answers

Answer:

Imagery

Imagery includes language that appeals to all of the human senses, including sight, hearing, taste, touch, and smell.

I think its imagery because the narrator describes that the character stood firmly, was held, rootless in mid air, etc..

Step-by-step explanation:

:))

please answer asap! no scam links or scam comments or reported.

Answers

Answer:

d) 2

because all the figures +2

1 pts
So
Sales
SE
According to
the data given, sza
what is the
sales amount
when the
temperature is
18 degrees C?
Temperature

Answers

Shfhdjdjsxjzkzndmdkxmdns

85% of x is 51. Write an equation that represents the situation

Answers

Answer:

85%*x =51

Step-by-step explanation:

of means multiply

Hence,

     85% times x =51

Find the 13th term of the arithmetic sequence 4x – 9, x – 16, -23 – 23,...

Answers

Answer: thumbs up

Step-by-step explanation:

solve the following equation for x: y = 2 x-5 , x + y = 4

Answers

Answer:

(3,1)

Step-by-step explanation:

Y=2x-5

x+y=4

substitute the answer for y in the first equation (2x-5) with the y in the second equation

x+(2x-5)=4

x+2x-5=4

3x-5=4

add 5 to both sides to isolate 3x

3x=9

x=3

To find y, replace x in either of the original equations and solve for y.

x+y=4

3+y=4

y=1

so, x=3, y=1

chech answer by subbing x and y values into either original equation.

y=2x-5

1=2(3)-5

1=6-5

1=1

or

x+y =4

3+1=4

4=4

Divide 10 by t. Then, add 2.
Which of the following expressions matches the statement above?
A.
t + 10 + 2
B.
10 + (t + 2)
C.
10 + + 2
D.
10 + 2 +


Answers

Fmutmi oop
Is ymunjnn

N
Rn. M. B p

3) Consider the function f defined by
f(x) = (3 - x)(4 + 3x). At what point does
the curve y=f(x) intersect the y-axis?

Answers

Answer:

(0,12)

Step-by-step explanation:

Let x = 0, solve the equation.

Determine whether the equation represents direct, joint, or inverse variation. Then identify the constant.
t = 100/s
y/5 = x
p/qr = 4
C = 2πr
V = 1/3πr^2h
xy = 2/5

Answers

The end is c kkdkkdkdje

Someone please help me:(

Answers

Answer:   2/3 is bigger                                                                                                                                        step-by-step explanation:

2/3 is 0.667 and 3/5 is 0.6

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