what is the solution set for the equation 2x^2-8x-42=0

Answer:

700 ft.

Step-by-step explanation:

Answer:

y = [tex]-\frac{1}{3}[/tex]

[tex]2\frac{2}{3}=x[/tex]

Step-by-step explanation:

To solve a system of equations, solve one or both of the equations for the same variable. Then multiply one of the equations such that the coefficients of one variable are the additive inverse of the variable in the other equation. After doing so, add the two equations, then solve for the other variable using inverse operations. Finally, substitute the value of the other variable into one of the original equations in the system and solve for the unknown variable.

2x + y = 3

y = x - 2

First, manipulate the first equation such that the equation is solved for (y), this can be done using inverse operations,

y = 3 - 2x

y = x - 2

Now multiply the second equation by (2) so that the (x) coefficients are additive inverses of each other,

y = 3 - 2x

2y = 2x - 4

Add the equations,

3y = -1

Inverse operations,

3y = -1

/3     /3

y = [tex]-\frac{1}{3}[/tex]

Now back solve, substitute the value of (y) into the equation and solve for (x),

[tex]y=x-3\\[/tex]

Substitute,

[tex](-\frac{1}{3})=x-3[/tex]

+3

[tex]2\frac{2}{3}=x[/tex]

Answer:

8x + 24

Step-by-step explanation:

1. 8(x + 3) - Distribute

2. 8x + 24 - Answer

Answer:

4.8

Step-by-step explanation:

Answer:

6 weeks

Step-by-step explanation:

(12/10)5 = 6 weeks

Answer:

-23

Step-by-step explanation:

16 x 1/4^2 - 4 x 6 = -23

Answer:

Step-by-step explanation:

The total area is the sum of the areas of the rectangle and the triangle:

Answer:

area of figure =area of (rectangle+TRAINGLE)

=l×b+1/2 p×b=10×5+1/2 ×3×10=50+15=65 inch² is your answer

Answer:

im not sure but...

Step-by-step explanation:

divide 10 from 3.14 and you should get the answer if not then multiply 10 to 3.14

a : b = 8 : 1

Answer:

kids : teams

a : b

48 : 6

( 48 : 6 ) ÷6

8 : 1

What is ten more than 90?

90+10=100

Answer:

100

Step-by-step explanation:

90 + 10

Answer:

15 miles an hour

Step-by-step explanation:

Answer:

X=18

Step-by-step explanation:

you can find what the missing angle is by subtracting 92 from 180 since its a straight line. After putting in the missing angle you can easily solve for 2X which is 36 and then divide by 2 and get 18.

Answer:

x = 23

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

92° is an exterior angle of the triangle, then

2x + 46 = 92 ( subtract 46 from both sides )

2x = 46 ( divide both sides by 2 )

x = 23

Hello!

[tex]\large\boxed{x = 3}[/tex]

2x + 1 = 5x - 8

Solve by subtracting both sides by 2x:

2x - 2x + 1 = 5x - 2x - 8

1 = 3x - 8

Add 8 to both sides:

1 + 8 = 3x - 8 + 8

9 = 3x

Divide both sides by 3:

9/3 = 3x/3

x = 3

Answer:

x = 3

Step-by-step explanation:

1. Write the equation

2x + 1 + 5x - 8

2. Add 8 on both sides

2x + 9 = 5x

3. Get the variables together

9 = 3x

4. Solve for x and divide both sides by 3

x = 3

Answer:

c. 56 degrees

Step-by-step explanation:

angle FEG and angle DEG add up to 180.

2x-6+3x-31=180

x=31

2(31)-6=56

The measure of angle ∠ FEG is,

∠ FEG = 56°

We have to given that,

Angles are defined as,

∠ FEG = (2x - 6)°

∠ DEG = (3x + 31)°

Here, Angles FEG and angle DEG are linear pair.

Hence, angle FEG and angle DEG add up to 180.

2x - 6 + 3x + 31 = 180

5x + 25 = 180

5x = 180 - 25

5x = 155

x = 155 / 5

x = 31

Therefore, The measure of angle ∠ FEG is,

∠ FEG = (2x - 6)°

∠ FEG = (2 × 31 - 6)°

∠ FEG = (62 - 6)°

∠ FEG = 56°

Learn more about the angle visit:;

https://brainly.com/question/25716982

#SPJ6

Answer:

because it does not follow the rule... you should be able to and any to side lengths and get an answer greater than the third side.

Answer:

y=8x+1

Step-by-step explanation:

y=mx+b

m=rise/run=(8)/(1)=8

y=8x+b

b is the y-intercept  

y=8x+1

Answer:

4

thank youuuu

Step-by-step explanation:

have a good day

Answer:

2.25 packs of paper/ classroom

Step-by-step explanation:

9 packs of paper/ 4 classrooms

9/4

2.25

Answer:

Top choice, A.

Step-by-step explanation:

Count the dots

Answer:

its choice A

Step-by-step explanation:

Answer:

1. 13578 hours

2. 2.07264 m

3. 68038.856 grams

4. 129600 seconds

5. 46,300 Meters

Step-by-step explanation:

Don't forget me to mark me as brainliest ☺

Answer:

1. 13578 hours

2. 2.07264 m

3. 68038.856 grams

4. 129600 seconds

5. 46,300 Meters

Step-by-step explanation:

Don't forget me to mark me as brainliest ☺

Answer:First one is equilateral triangle Second one is 85  

Step-by-step explanation:

Answer:

Hi

Step-by-step explanation:

The first one is equilateral triangle. The second answer is 85.

32+63+x = 180

x= 180 - (32+63)

x = 180 - 95

x = 85

Answer:

1. 25

2. 24

equations below

Step-by-step explanation:

Order of operations is: PEMDAS = parentheses, exponents, multiplication, division, addition, subtraction

1. 5 x (20/4)

normally we multiply before we divide, but in this case, the division is in parentheses, so we start there

= 5 x 5

then multiply

= 25

------------------------

2. The lovely land of exponents

6^2 (the only way I can type 6 squared, or 6 to the power of 2, where the 2 is up as a superscript)

6^2 - 2 x 6

PEMDAS has us do the exponents before multiplication or subtraction:

6^2 = 6 x 6 = 36

= 36 - 2 x 6

then multiply:

= 36 - 12

then subtract:

= 24

Answer:

Its linear

Step-by-step explanation:

the intercept is 0,0 and the it grows by 4. there is 1,4 2,8 and it goes on and on

Answer:

surface area≈126.65

Step-by-step explanation:

A=2AB+(a+b+c)h

AB=s(s﹣a)(s﹣b)(s﹣c)

s=a+b+c

2

Solving forA

A=ah+bh+ch+1

2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=5·7+5·7+5·7+1

2·﹣54+2·(5·5)2+2·(5·5)2﹣54+2·(5·5)2﹣54≈126.65064

Answer:

Step-by-step explanation:

so the base times the height Princessa ,   b/c there are 2 triangles we don't have to take 1/2 like you would normally for a triangle

for the volume:

the end triangles are 4x6 = 24

length is 10

24*10=240 [tex]cm^{3}[/tex]   for the volume

for the surface:

2*(10*5) = 100

1*(10*6)=60

2*(4*6)=48

208 [tex]cm^{2}[/tex]   for the surface area

Answer:

0.20

Step-by-step explanation:

total of marbles

= 6 + 4 + 3 + 2

= 15

the probability of blue

= 3/15 × 100%

= 20%

= 0.20