Mathematics High School

Which of the following are solutions to the equation below?
Check all that apply.
x2 + 6x + 9 = 20
A. x= 13 + 20
B. X = -2.75 +3
C. X = 2.5+ 3
D. X = -1/5 + 20
E. X = 2.5 - 3
F. x = -24/5-3

Answers

Answer 1
A D and b.............................................

Related Questions

y = 2/5x -1/2 + y = -1/3x + 2/3 combine like terms​

Answers

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Have a nice rest of your day

#Nova

Identify the slope and y-intercept of the line y = 9x - 3

Answers

Answer:

slope = 9 , y- intercept = - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 9x - 3 ← is in slope- intercept form

with slope m = 9 and y- intercept c = - 3

Choose the expanded form for the expression.
4(1/4a+b+(-6)
A. a+b-24
B. 4a-6b
C. 4a+b-6
D. a+4b-24

Answers

Answer is D. Multiply 4 into each item in the parentheses.

586.875 to 2 decimal places​

Answers

Could you explain the question more in the comment so I can help?

The two triangles shown are congruent

Answers

Answer:

30* or A

Step-by-step explanation:

If the triangles are congruent, corresponding angles and sides are equal.

So angle c is 60* because it is opposite of side x.

angle b is 180-90-60 because all angles add up to 180 in a triangle.

PLEASE HELP!!!!! You are given an isosceles trapezoid ABCD with median XY. Complete the following.
m

Answers

Lol give me a second

Evaluate 1/4x+ 1/20 when x =1/5

Answers

Answer:

1/10

0.1

Step-by-step explanation:

major help.......................

Answers

Answer: C. 85°

Step-by-step explanation:

Answer:

I look lik dis almost dreads and then them types of braces and my eye brows look like that and I got a tattoo on my face but my eyes are blue and I have contacts so no more glasses

negative2 - 7 is equvilent to

Answers

Answer:-5

Step-by-step explanation:

Answer:

-9

Step-by-step explanation:

-2 - 7

Picture a number line in your head, you begin at negative 2, which is less than 0 and you further go left 7 points, so you will end at -9

Help please answer Will name Brainliest

Answers

Answer:

m2 will be 88

m3 will be 92

m1 will also be 92

Step-by-step explanation:

Opposite angles are equal and 3 and 4 are add upto 180

Please solve this problem
I really want the answer
please give the correct answer​

Answers

Answer:

Step-by-step explanation:

Use PEDMAS

125 ÷ (-5) * (-4) - 100 =  (-25) * (-4) - 100

                                  = 100 - 100

                                  = 0

What is the integral of x?

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The integral of x is :

[tex] \dfrac{x {}^{2} }{2} + c[/tex]

Answer for points ig I’ll thank it

Answers

Answer:

thanks

Step-by-step explanation:

Answer:

Thank you (:                                                                  

find the solutions of the quadratic equation.-x^2+7x-14=0

Answers

Answer:

Step-by-step explanation:

x =(-7+√-7)/-2=(7-i√ 7 )/2= 3.5000+1.3229i

 or:

x =(-7-√-7)/-2=(7+i√ 7 )/2= 3.5000-1.3229i

If x2 + y2 = 14 and xy = 5, find the value of (1/2 x + 1/2 y)2.

Answers

Answer:

(½x+½y)²=6

Step-by-step explanation:

x^2 + y^2 = 14, xy=5

(A+B)^2=A^2 +2AB+B^2... (*)

(1/2x+1/2y)^2 =(*)

(1/2x)^2 +2(1/2x)(1/2y)+(1/2y)^2 =

1/4x^2 +1/2xy+1/4y^2=

1/4(x^2 +y^2) +1/2(xy)=

1/4*14+1/2*5=

14/4+5/2=

14/4+10/4=

24/4=6

let me know if I'm wrong.

( 1/2x +1/2y)²

= { ( x + y )/ 2xy }²

= ( x² + 2xy + y² )/4(xy)² —(1)

As we know that x² + y² = 14 — (2)

and xy = 5 —(3)

So, substitute the value of equation 2 and 3 in equation 1,

= ( x² + 2xy + y²)/4(xy)²

=( 14 + 2*5)/(4*5²)

= 24/(4*25)

= 6/25.

What is the slope of this line?

Enter your answer as a fraction, formatted like this: 42/53

Or, if the slope is undefined, enter a lowercase letter "u," like this: u

Answers

Answer:

-1/2

Step-by-step explanation:

To find the slope, you use the rise/run method.

To get from one point to another, you would move 1 unit down (rise) and 2 units to the right (left)

The slope would be -1/2

Hope this helps! Brainliest would be really appreciated!

What is the sum to 5(−3.4k−7)+(3k+21)

Answers

Your answer is: -14k-14

Step-by-step explanation:

5(-3.4k-7)+(3k+21)

_17k-35+3k+21

-14k-35+21

-14k-14

Answer:

5(-3.4k-7)+(3k+21)

_17k-35+3k+21

-14k-35+21

-14k-14

Your answer is: -14k-14

PLEASE PLEASE PLEASE HELP

Answers

10- 9

11- 5

12- 1

13- 10

14- 3

15- 7

16- 3

17- 3

18- 6

Anne goes out to lunch every Friday. On average she spends around
$18 each time, How much money can she save in one year if she
stops going out for lunch each week?

Answers

Answer:

$936

Step-by-step explanation:

there are about 52 weeks in a year

18*52=936

Hope this helps!

936……………………………………………

Which of the following is most likely the next step in the series?
B.
SUBMIT

Answers

A is most likely next

Answer:

I would say A.

Step-by-step explanation:

The pattern is blue, red, red, blue, blue, red, so then another red?

I apologize if im incorrect

Mother arranged 5 rows with 3 cups and saucers in each row she then put on the table 2 more sets of cups and saucers how many cups and saucers were on the table

Answers

Answer:

I think it might be 30 if the each cup and saucer is counted as 1.

Step-by-step explanation:

5 x 3 = 15 x 2 = 30

Two cyclists start from 98 miles apart and begin racing toward each
other. Three hours later, they have not yet met and the distance between
them is 2 miles. How fast is each of them biking if one bikes 3 mph
slower than the other?

Answers

The speed of one bicyclist was 14.5mph, speed of the other bicyclist was 17.5mph.

Let the speed of one bicyclist=x mph

Let the speed of the other bicyclist=(x+3) mph

Hence:

Speed of one bicyclist:

3x+3(x+3)+2=98

3x+3x+9+2=98

6x=87

Divide both side by 6x

x=87/6

x=14.5 mph

Speed of the other bicyclist:

x+3 mph

14.5 mph+3 mph

=17.5 mph

Inconclusion the speed of one bicyclist was 14.5mph, speed of the other bicyclist was 17.5mph.

Learn more here:

https://brainly.com/question/18839894

If LM = 22 and MN = 15 find LN

Answers

Answer:

LN = 37

Step-by-step explanation:

The Segment Addition Postulate tells us that LM+MN = LN

LN=37 because the number is even and odd so it will be 37

If c-d=7 and c=3-8i what is d

Answers

Answer:

d=-4.......,...........

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

If,

c - d = 7

c = 3 - 8i

The value of  d is -4 - 8i

What is an equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 3 = 4 is an equation.

2x + 6 is an equation.

We have,

Two equations:

c - d = 7 _______(1)

c = 3 - 8i _______(2)

We are using the substitution method to solve this problem.

We make the value of a variable from an equation and substitute the value of that variable in the other equation.

From (1) we get,

c - d = 7

Add d on both sides.

c - d + d = 7 + d

c = 7 + d ______(3)

Put (3) on (2) we get,

7 + d = 3 - 8i

Subtract 7 on both sides.

7 + d - 7 = 3 - 8i - 7

d = -4 - 8i

Thus,

If,

c - d = 7

c = 3 - 8i

The value of  d is -4 - 8i

Learn more about equations here:

https://brainly.com/question/17194269

#SPJ2

Two numbers have a sum of 12 and a difference of 4. What is the smaller of the two numbers?
Α. 8
B. 6
C. 4
D. 3

Answers

Answer:

8

Explaining :

4/12 is 8

8+4=12

12-4=8

I hope it work :)

the graph of the equation y=2x-1 is shown in the coordinate plane.

wich lists contain only points that lie on the graph of y=2x-1?
​
A. (0,-1), (15,29), (2,3)
B. (2000, 1999), (3,5)
C. (-2,-3), (-5,-9), (0,0)
D. (-0.5, -2), (0.3, -0.4), (0.5, 0)
E. (1/4, -1/2), (4/5, 3/5)

Answers

Answer:

A, D, & E

Step-by-step explanation:

If you plug in the coordinates, they prove to be valid

(0, -1)

2(0) - 1

0 - 1 = -1

(15, 29)

2(15) - 1

30 - 1 = 29

(2, 3)

2(2) - 1

4 - 1 = 3

(-0.5, -2)

2(-0.5) - 1

-1 - 1 = -2

And so on. Just plug them in and see if it is correct.

In triangle XYZ, LX = 45°, LY
= 65°
Find the size of LZ.

PLEASE HELP ILL PAY U $10

Answers

Answer:

Angle Z is 70 degrees

Step-by-step explanation:

The 3 angles of a triangle add up to 180 degrees. Angle x is 45, angle y is 65.

180-45-65 = 180-110 = 70

Question 4 of 5 Which expression uses the associative property to make it easier to evaluate 6(5-3)? 1 3 O A. 6(} - ) O B. (6 - 3) O C. 3(6.3) O D. ( 63) SUBMIT
pls help, no links.​

Answers

I think it's a

Step-by-step explanation:

associative property means you can change what ever is in the ()

Answer:

Step-by-step explanation:

What is the least common denominator (LCD) of 13 and 34?

Answers

Answer:

442

Step-by-step explanation:

What is the surface area in square inches of a cube with a side 7
inches long?
10

Answers

Answer:

28

Step-by-step explanation:

7x4

Answer:

249 inches

Step-by-step explanation:

a cube is equal on all sides so if one side is 7 all sides are 7, if you multiply 7 by 7 you get 49 but that's just one face of the cube, there are 6 faces on a cube so 49 x 6 is 249

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