help it's worth 15 points

Step-by-step explanation:

[tex]x {}^{2} + 3x - 18 \\ = x {}^{2} + (6 - 3)x - 18 \\ = x {}^{2} + 6x - 3x - 18 \\ = x(x + 6) - 3(x + 6) \\ = (x + 6)(x - 3)[/tex]

Thank you ☺️☺️

Answer:

Jack needs to run at a speed of 1/12 mph

Step-by-step explanation:

Mathematically;

speed = distance/ time

Distance = speed * time

10 minutes = 10/60 h = 1/6 hours

The distance to the school will be

Distance = 3 * 1/6 = 1/2 = 0.5 miles

Now, he needs to be at school 4 minutes earlier, time will now be 10 - 4 = 6 minutes

To get the speed here;

Recall that the distance from above does not change

So speed = 0.5/6 mph 0r 1/12 mph

Answer: 6 and 5

Step-by-step explanation:

Answer:

I will give you brainliest if you give me.    :)

Step-by-step explanation:

Answer:88*8y=6x

Step-by-step explanation:

Answer:

4.50 i think

Step-by-step explanation:

a product that normally costs $25 with a 18 percent discount will cost you $20.50, and you saved $4.50. You can also calculate how much you save by simply moving the period in 18.00 percent two spaces to the left, and then multiply the result by $25 as follows: $25 x . 18 = $4.50 savings.

Answer:

4.5

Step-by-step explanation:

you multiply 18 and 25 to get an answer of 450 then divided it by 100 to get 4.50

Answer:

n = 2

Step-by-step explanation:

Simplifying

(n + 8) + (n + -12) = 0

Reorder the terms:

(8 + n) + (n + -12) = 0

Remove parenthesis around (8 + n)

8 + n + (n + -12) = 0

Reorder the terms:

8 + n + (-12 + n) = 0

Remove parenthesis around (-12 + n)

8 + n + -12 + n = 0

Reorder the terms:

8 + -12 + n + n = 0

Combine like terms: 8 + -12 = -4

-4 + n + n = 0

Combine like terms: n + n = 2n

-4 + 2n = 0

Solving

-4 + 2n = 0

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '4' to each side of the equation.

-4 + 4 + 2n = 0 + 4

Combine like terms: -4 + 4 = 0

0 + 2n = 0 + 4

2n = 0 + 4

Combine like terms: 0 + 4 = 4

2n = 4

Divide each side by '2'.

n = 2

Simplifying

n = 2

Answer:

12

Step-by-step explanation:

Since M is a midpoint of LN, we can see 3x equal to x+8. Remove 1 x to get 2x=8. Solve for x to get x=4. Note that this is not the end to your problem. They asked for the length of MN, not the value of x. Plugging x into MN give you 4+8, which is 12.

(If you need to show work, here it is)

3x=x+8

2x=8

x=4

MN=x+8

MN=4+8

MN=12

The answer is y = 12x - 24

Use the form y = mx + b

If the points are (2, 0) and (3, 12) the slope is 12 which gives us m.

Since every time you go backwards once it goes down 12, (1, -12) is a point and then (0, -24) is a point that shows us the y-intercept which gives us b.

Answer:

1/3

Step-by-step explanation:

Answer:

3 times

Step-by-step explanation:

1.5 times 3 equals 4.5

Answer:

1.5 pounds of potato salad for 4.50 would be cheaper

Step-by-step explanation:

because if you divide 3.50 by two you get 1.75 and added back to 3.50 you can purchase 1.5 pounds for 5.25 which is more expensive than 4.50

Answer:

Mo's answer is wrong.

635 - 813

= -178

Step-by-step explanation:

a. Is Mo's answer right?

No, Mo's answer is incorrect

Mo did this by working from right to left, Just like Subtraction

• 3 - 5 =

We that 1 from the number in tens , add that to 3, making it 13

13 - 5 = 8

• 1 - 3 = 7

The one above becomes 0, because 1 was taken from it. We add 1 to 0, making it 10

10 - 3 = 7

• 8 - 6 = 1

The 8 above reduces to 7 because 1 has been taken from 8.

Hence: 7 - 6 = 1

635 - 813

= -178

The answer is minus 178 because, we are subtracting the bigger number form the smaller number.

b. Solve

6(100) + 3(10) + 5(1)

- [8(100) + 1(10) + 3(1)]

by working with expanded forms. Discuss how Mo's work compares with your work in expanded forms.

= -1(100) + 7(10) + 8(1)

Answer:

B

Step-by-step explanation:

Answer:

9 to the 7th power

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

The second one.

Step-by-step explanation:

Both intercept twice at 0 and -4.

Answer:

x=5 y=3

Step-by-step explanation:

6x-27=4x-17

2x=10

x=5

y=6(5)-27

y=30-27

y=3

y=4(5)-17

y=20-17

y=3

Answer:

he is incorrect

Step-by-step explanation:

He is incorrect because 10 times 3 is 30, plus-minus 2 which is 30. So instead of 34, it is 30. or you can say Anthony is wrong. Following the order of operations, you would do the 10*3 first. Then, you would take the 30, and finish the equation from left to right. So you would add 2 to make it 32 and then subtract 2 to make it 30 again. So your final answer is 30, not 34. So Anthony is wrong.

Answer:

I think the answer is A if my math is wriye

Step-by-step explanation:

Answer:

it would be D 5 hope this helps :)

Step-by-step explanation:

Answer:

-11 and -5

Step-by-step explanation:

-11 x -5 = 55, and add to -16

Answer: 5-6•54

Hope this helps (:

Answer:

1.  5/7 2. 8/9 3. 5/8

Step-by-step explanation:

They are all closer to one whole

Answer:

1. 5/7

2. 8/9

3. 5/8

I'm pretty sure this is correct

Answer:

t = 4 seconds

Step-by-step explanation:

The height of the projectile after it is launched is given by the function :

[tex]h(t)=-16t^2+32t+128[/tex]

t is time in seconds

We need to find after how many seconds will the projectile land back on the ground. When it land, h(t)=0

So,

[tex]-16t^2+32t+128=0[/tex]

The above is a quadratic equation. It can be solved by the formula as follows :

[tex]t=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}[/tex]

Here, a = -16, b = 32 and c = 128

[tex]t=\dfrac{-32\pm \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}\\\\t=\dfrac{-32+ \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}, \dfrac{-32\- \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}\\\\t=-2\ s\ \text{and}\ 4\ s[/tex]

Neglecting negative value, the projectile will land after 4 seconds.

Answer:

B

Step-by-step explanation:

90+45+45=180

All triangles equal 180.

Its B because if one angle is 90° then the other angles will equal each other. It cant be 60° and 30° because they dont equal, so your final answer is B.

Hope this Helps!!! :)

Answer:

Maggie is 7 years old

Step-by-step explanation:

m+2m-4=17

3m-4=17

3m=21

m=7

Answer:

Maggie is seven years old

Step-by-step explanation:

Maggie's Brothers Age = B

Maggie's Age = M

2M - 4 = B

B + M = 17

Plug in 2M - 4 for B

( 2M - 4 ) + M = 17

Combine Like Terms

3M - 4 = 17

Add 4 to either side

3M = 21

Divide either side by 3

M = 7

Check your answer

2M - 4 = B -> 2 x 7 - 4 = B -> 14 -4 = B -> B = 10

B + M = 17 => 7 + 10 = 17 => 17 = 17

Answer:

11.50

Step-by-step explanation:

The new wage is equal to the old wage plus her raise, so:

x + 0.75 = 12.25

or

x= 12.25-0.75

Meaning x is her original wage, being $11.50

(This is my first answer so let me know if I did anything wrong)

The contrapositive of this statement would be: "If x does not equal -4, then 5x + 7 will not equal to -13."

The contrapositive is defined as the inverse and converse of a conditional statement.

X is equal to 4 we know this is because the sign in between the number means greater than or equal to so 3 x 4 equals 12 which makes the equation on right true and on the left x.

So, the contrapositive of this statement would be:

"If x does not equal -4, then 5x + 7 will not equal to -13."

Learn more about contrapositive ;

https://brainly.com/question/5306301

#SPJ2

Answer:

B

statement a is division property of equality

statement b is symmetry property of congruence

statement c is multiplication property of equality