I need help with #8. I need to use the quadratic formula. I have a calculator that is programmed for the quadratic formula so all I need are the a, b, and c values. for this problem, I am required to show any equations used to solve for the variable. hope you can help me, thanks!!​

Answer:

-11

Step-by-step explanation:

-1/2y=1/2+5

- 1/2 y = 1+10 (by taking lcm)

               2  

 [tex]\frac{-1}{2}[/tex] x 2y = 11

y = -11

[tex] \frac{ - 1}{ \: \: \: 2} y = \frac{1}{2} + 5[/tex]

[tex] \frac{ - 1}{ \: \: \:2} \times y = \frac{1}{2} + 5[/tex]

[tex] \frac{ - 1}{ \: \: \:2} \times y = \frac{11}{2} [/tex]

[tex]y = \frac{11}{2} \div \frac{ - 1}{ \: \: \:2} [/tex]

[tex]y = \frac{11}{2} \times \frac{ \: \: \: 2}{ - 1} [/tex]

[tex]y = \frac{ \: \: 22}{ - 2} [/tex]

[tex]y = - 11[/tex]

The value of y = -11

Therefore :-

[tex] \frac{ - 1}{ \: \: \:2} \times - 11 = \frac{1}{2} + 5[/tex]

Answer: D

Step-by-step explanation:

Answer:

4+5x= -11

5x= - 11-4

5x= - 15

x= - 15÷5

x= - 3

Answer: a=3

Step-by-step explanation: add 63 to both sides. Then divide both sides by 9 to get a=3.

Answer:

Duh , 70

Step-by-step explanation:

AB || CD and AC is oblique ;

So : Angle ( BAC ) = Angle ( DCA )

_________________________________

∆ ABC - ∆ ACD :

(1) AB = CD

(2) Angle ( BAC ) = Angle ( DCA )

(3) AC = AC

So According to (1) , (2) , (3) :

∆ ABC =~ ∆ ACD

Well, if two triangles are deposited, all their components are equal peer to peer.

So : AD = BC

Answer:

r<2

r greater than or equal to 7

Step-by-step explanation:

The solution for r in the two of the given inequalities is r<2 and r ≥ 7, respectively.

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.

The given inequalities can be solved as shown below.

1.)

2r + 3 < 7

Subtract 3 from both sides of the inequality,

2r + 3 - 3 < 7 - 3

2r < 4

Divide both the sides of the inequality by 2,

2r/2 < 4/2

r < 2

2.)

-r + 9 ≤ 2​

Subtract 9 from both sides of the inequality,

-r + 9 - 9 ≤ 2 - 9

-r ≤ - 7

Multiply from both sides of the inequality by -1,

(-r × -1) ≤ (-7 × -1)

r ≥ 7

Hence, the solution for r in the two of the given inequalities is r<2 and r ≥ 7, respectively.

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Answer:

A

Step-by-step explanation:

6 friends

Mean - 10

Median - 9.5

Range - 14

3 friends watched 12, 13, and 18 movies.

Let's find the sum, this will help us find the total number of movies the other 3 friends watched.

12 + 13 + 18 = 43

The mean is all their movies added toether, divided by the number of friends.

m = number of movies the other friends watched.

(43 + m) / 6 = 10        Multiply each side by 6

43 + m = 10 * 6

43 + m = 60          Subtract 43 from each side

m = 60 - 43

m = 17

So we know the total movies the other friends watched is 3.

A. 4+6+7 = 17

B. 4+4+7 = 15

C. 5+8+9 = 22

D. 2+3+5 = 10

We know the answer is A.

We can check it by looking at the Median, the median is the middle number, if there are an even number of samples, you add the 2 middle numbers together and divide by 2.

4, 6, 7, 12, 13, 18

So 7+12 = 19

19/2 = 9.5

So we know for sure A is correct!

Answer:

$172.50

Step-by-step explanation:

Simply do 230 x 0.75 which is the percent subtracted by 25 that decreases a value and makes it less

Answerer: Darrell has already donated $23 to the foundation, so f (0) =$23.

Because x represents the number of weeks, and Darrell is contributing $1 every day, Monday through Friday, he will contribute a total of $5 per week. So, the total amount donated will increase by $5 each week. Therefore, the recursive function will be f (x) =f(x - 1) + $5, where f ($23).

Answer:

angle2=23°

angle7=angle5

angle2=angle6

so,angle8=23°

total angle = 180°

angle7=180°-46°=134°÷2=67°

Using corresponding angles are equal property we found that m∠7 = 157°

When two parallel lines are intersected by an transversal line then the pair of angles formed on one same side of transversal on both parallel lines are corresponding angles. As in the figure attached ∠ 1 and ∠5 are  corresponding angles.∠4 and ∠8 are also corresponding angles.

Corresponding angles are always equal.

Given that x and y are parallel lines.

Then ∠2 and ∠6 are corresponding angles , therefore m ∠2 = m ∠6

Given that m∠2 = 23°

⇒ m∠6 = 23°

As ∠7 and ∠6 are on same line hence they are supplementary

m∠7  + m∠6 = 180°

⇒m∠7 + 23° =180°

⇒m∠7  =180°- 23° = 157°

Therefore, the measure of angle ∠7 is 157°

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Answer:

I used a calculator and it said "1.675"

Step-by-step explanation:

Issun Sengeki... Messatsu!

Plug "6.7/4" and 1.67500 appears.

Quote: "Weakness is a disease... I am the cure!"

- Akuma

Answer: 50t+100

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

It is C because it has a proportional value through the diameter of the graph. With that you will also be able to figure this out by seeing that the light in between the graph is even. The numbers that the graph a line with are similar to the answer C.

Answer:

  x = 11

Step-by-step explanation:

If we assume that points A, B, and C are on the same line with B between A and C, then we have ...

  AB +BC = AC

  (4x +34) +(6x +6) = 150 . . . . use the given expressions

  10x +40 = 150 . . . . . . . . . . . . collect terms

  10x = 110 . . . . . . . . . . . . . . . .  subtract 40; next, divide by 10

  x = 11

Answer:

TAG is described as an acute angle.

Step-by-step explanation:

This is because TAG is an angle that is less than 90 degrees.

Answer:

acute

Step-by-step explanation:

TAG

think of the angle, the gap is small and T is close to G

if it would be right the T would be upright

if it was straight T would lay flat corresponding to G making a line

if it was obtuse the gap would surpass the right angle outward

Answer:

=a+7

Step-by-step explanation:

Answer:

a+7

Step-by-step explanation:

combine like terms

3a-2a+7

a+7

Answer:

h=5

Step-by-step explanation:

Let's solve your equation step-by-step.

5h−13=12

Step 1: Add 13 to both sides.

5h−13+13=12+13

5h=25

Step 2: Divide both sides by 5.

5h /5 = 25 /5

h=5

I this helps may I get brianliest?

Answer: h = 5

Step-by-step explanation: 5h + 13 = 12  -13 + 5h = 12  ( h ) 0 + 5h = 12+13 5h = 25 ~ 5

Answer:

64

Step-by-step explanation:

x+8x+(8x-16)=154

17x=170

x=10

10+80+64=154

Answer:

d

Step-by-step explanation:

The vertices of image A'B'C' after dilation with a scale factor of 2 about the origin are , A' (6, -2), B' (4,2), and C' (10, 6).

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

ABC has vertices A (3, -1), B (2, 1), and C(5, 3).

Now, After dilation with a scale factor of 2 about the origin the vertices of A', B' and C' are,

A' = 2 × (3, - 1)

   = (6, - 2)

B' = 2 × (2, 1)

   = (4, 2)

C' = 2 × (5, 3)

    = (10, 6)

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Answer:

d. if mike did not do his homework, then he will not pass this test

Answer:

y= -x + 10

Step-by-step explanation:

At 0 hours = Bob has 10 apples

At 4 hours = Bob has 6 apples

In 4 hours Bob has eaten 4 apples

Using linear graphs where y = the apples remaining and x = the hours passed

y = mx + c

We already know some coordinates:

(0,10) - 0 hours 10 apples remaining

(4,6) - 4 hours 6 apples remaining

c is the y intercept and m is the gradient

We already have the y intercept (where x = 0) which is (0,10)

So first part of our rule is done: y = mx + 10

The gradient is rise / run

Rise = -4 and Run = 4

-4/4 = -1

So the gradient is -1 and we add that to our rule

So final rule is y = -x + 10

Answer:

i believe it is d as the angle could also be a right angle

Step-by-step explanation:

Answer:

Your mom :))))))

Answer:

x = 0

Step-by-step explanation:

5x = 2x

5x - 2x = 0

3x = 0

x = 0×3

x = 0

Answer:

12, 13, 14

Step-by-step explanation:

Three consecutive numbers means three numbers in a row, so if n is the first number, the second number is one more than  n (which is n+1) and the third number is one more than that (which is n+2)

So three times (3 x) the first number (n) is equal to (=) nine more than (9 +) the sum of the other two ( (n+1) + (n+2) )

3 times n can be written as 3n

So 3n = 9 + (n+1) + (n+2)

3n = 9 + n + 1 + n + 2

3n = 9 + 1 + 2 + n + n

3n = 12 + 2n

Subtract 2n from each side

3n - 2n = 12 + 2n - 2n

1n = 12

n = 12

So the first number is 12, the second number is 12 + 1 (13) and the third number is 12 + 2 (14)

The numbers are 12, 13, 14

Hope this helps :)

Step-by-step explanation:

Hey there!

Speed (s) = m/hr

Distance = 12 miles

Time = ?

We have,

[tex]t = \frac{d}{s} [/tex]

[tex]t = \frac{12}{1} [/tex]

Therefore, time = 12 hr.

[Note: The speed is 1miles/hr. So, we got time same as the distance]

Hope it helps...

Answer:

12/s

Step-by-step explanation:

Answer:

0.155625 or .16 cents per ounce

Step-by-step explanation:

2 tons is 64000 ounces so 9960 divided by 64000 is .155625

Answer:

The first should be (x+6, y-(-10).

The others, not sure but you have to plug them in.

Answer:

See attached

Step-by-step explanation:

The form is filled in and attached