I already figured out one i think need help ASAP!!!!

Answer:Therefore, the domain is restricted to non-negative values of x so that the function values will be defined. The variable x is often referred to as the independent variable, while the variable y is referred to as the dependent variable

Step-by-step explanation:

Answer:

It depends

Step-by-step explanation:

It depends on how many problems are in the test. If the test has a standard amount of ten questions, you can only miss one question if you want to get a solid 90%. If the test has twenty questions, you can miss two to get that 90%.

If you're going for an 80% (or B), you can miss two on a ten-question test and four on a twenty-question test.

Again, it all depends on the number of questions and what percentage you want to get on the test.

Answer:

1

Step-by-step explanation:

Answer:

1/4, 3/8, 2/3

Step-by-step explanation:

Answer:

1/4. 3/8. 2/3

Step-by-step explanation:

1/4, 3/8 and 2/3

Answer:

1st number: 37

2nd number: 22

Step-by-step explanation:

let n = 1st number

let n-15 = 2nd number

n+(n-15)=59

collect like terms: 2n-15=59

add 15 to both sides

2n=74

divide both sides by 2

n=37

n-15=22

Answer:

Our two formulas for each plan:

50 (base fee) + .80x (cost per mile) = y (total cost)

.90x (cost per mile) = y (total cost)

We want to find how many miles we have to drive, so solve for x. We're going to plug in y (from equation 2) into the value for y. This is the substitution method.

50+.80x=y

Plugin: 50+.80x = .90x

Add .90x to each side, subtract 50 from each side: .80x -.90x = -50

Simplify: -.10x = -50

Divide: x = -50/-.10 (two negatives make a positive)

x = 500

So this tells us that she has to drive 500 miles to make the plans equal. Let's verify this by plugging in the value we found for x.

499 miles, plan 2 is cheaper.

50 + .80(499) = 449.20

.90(499) = 449.1

500 miles, they are equal

50 + .80(500) = 450

.90(500) = 450

501 miles, plan 1 is cheaper

50 + .80(501) = 450.8

.90(501) = 450.9

Not my work.

Answer:

750mi

Step-by-step explanation:

x = how many miles

75+0.8x=0.9x

Move all terms containing x to the left side of the equation.

75−0.1x=0

Subtract 75 from both sides of the equation.

−0.1x=−75

Divide each term in −0.1x=−75 by −0.1 and simplify.

x=750

Answer:

150

Step-by-step explanation:

on the the right all the numbers are 15 greater than the numbers on the left

-NULL

Brainliest will be appreciated thank you!

Step-by-step explanation:

Change the equation to the general form [tex]Ax + By + C = 0[/tex].

[tex]y - 15 = - 6(x + 7) \\ y - 15 = - 6x - 42 \\ 6x + y - 15 + 42 = 0 \\ 6x + y + 27 = 0[/tex]

The slope

[tex] = - \frac{A}{B} [/tex]

[tex] = - \frac{6}{1} [/tex]

[tex] = - 6[/tex]

Answer:  Slope is -6

Step-by-step explanation:

We want to rearrange the equation to the form of y=mx+b, where m is the slope and b the y-intercept.

y−15=−6(x+7)

y−15=−6x-42

y=−6x-42+15

y = -6x - 27

The slope is -6

Answer:

m=0,-8

Step-by-step explanation:

Rearrange this Absolute Value Equation

|m+4|+7 = 11

Another term is moved / added to the right hand side.

|m+4| = 4  STEP 2:

Clear the Absolute Value Bars

The Absolute Value term is |m+4|

For the Negative case we'll use -(m+4)

For the Positive case we'll use (m+4)

STEP3:Solve the Negative Case

     -(m+4) = 4

Multiply

     -m-4 = 4

Rearrange and Add up

     -m = 8   Multiply both sides by (-1)

     m = -8

    Which is the solution for the Negative Case

STEP4:Solve the Positive Case

     (m+4) = 4

Rearrange and Add up

     m = 0

Which is the solution for the Positive Case

STEP5:

Wrap up the solution

m=-8

m=0

Solutions on the Number Line

 Two solutions were found :

m=0,M=-8

Step-by-step explanation:

0.4+0.3=0.7

3-0.7

=2.3%

mark me brainliest pls!!

Answer:

40

Step-by-step explanation: Make a proportional relationship. Make 25% into a fraction, 25/100. Then make 10 into a fraction using a variable. For example 10/p. Then cross multiply. 100x10=1000. Divide 1000 by 25 and the answer would be 40.

Answer:

What does the red point represent?

After 6 hours of driving, you are 276 miles away from home

Slope is 46

690 miles away after home in 15 hours

Step-by-step explanation:

(0,0)(2,92)

x, y  x, y

y1-y2

x1-x2

0-92

0-2

46

10(46)+5(46)=15(46)

15(46)=690

Answer:

47.15 if it needs to be rounded to the nearest tenth it would be 47.2

Step-by-step explanation:

I hope this helps

The value of the expression is tan 30.

Option A is the correct answer.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

We know that,

tan (x - y) = (tan x - tan y) / (1 + tanx tany)

So,

(tan 50 - tan 20)/(1 + tan 50 tan 20)

This can be written as,

= tan (50 - 20)

= tan 30

Thus,

The expression value is tan 30.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Answer:

1083.45

Step-by-step explanation:

Diameter = 2r

Radius = 5cm because the diameter is 10.

4 pie r^2 is the surface area. = 314.2.

314.2/0.29 = 1083.45 Pounds

Answer:

The scuba diver is 21 feet below sea level

Step-by-step explanation:

I took the test

give brainliest if this is right please

I'd really appreciate it

Answer:

B) (4x+3)(16x²-12x+9)

Answer:

b = -14

Step-by-step explanation:

Answer:

He volunteered 10 hrs 15 min on average.

Step-by-step explanation:

The first week: 8 hrs

The second week: 12 hrs

The third week: 12 hrs

The fourth week: 9 hrs

8 + 12 + 12 + 9 = 41 hrs total

41 hours/4 weeks = 10.25 hrs (10 hrs 15 min)

Answer: 10.25 hours/week (On average, William volunteered 10.25 hours per week during these four weeks)

Step-by-step explanation:

To find an average, you need to add up each entity:

8+12+12+9=41

After that, you divide that number by n (the number of weeks)

41/4=10.25 hours

Answer:

y=1/2x

Step-by-step explanation:

Its a positive slope so you go up 2 then right 4

Answer:

slope = [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (0,  0) and (x₂, y₂ ) = (6, 3) ← 2 points on the line

m = [tex]\frac{3-0}{6-0}[/tex] = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex]

Answer:

Step-by-step explanation:

1) x²  -x - 20 > 0

x² - 5x + 4x - 20 > 0

x( x - 5) + 4(x - 5) > 0

(x - 5)(x + 4) > 0

x - 5 > 0    ; x + 4> 0

x > 5         ; x  < -4

3)  x² + 9x + 14 > 0

x² + 7x + 2x + 14 > 0

x(x + 7) + 2(x + 7)  > 0

(x + 7) (x + 2) > 0

x < - 7  and x > -2

4) r² - 10r + 16 > 0

r² - 8r  -2r + 16 > 0

r(r - 8) - 2(r - 8) > 0

(r - 8)(r - 2) > 0

r < 2  ; r > 8

Answer:

B. X > 8

Step-by-step explanation:

when dividing a negative denominator, you are flipping the sign. if the denominator doesn't have a negative sign, the sign isn't flipped.

steps:

subtract 30 by -18.

Soon you receive -48. Divide that by -6.

The signs soon flip giving you X> 8

Answer:

8 pizzas for the party

Step-by-step explanation:

The Italian Kitchen Pizzeria charges $12.99

Budget of $115

How many pizzas to buy?

115 / 12.99 ≈ 8.853 pizzas

We can buy 8 pizzas. ( we do not have enough  money for a ninth )

Answer:

bc...

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

yes

    by multiplying each term in the parentheses by the term outside

-6(5y-2u-3) = (-6 × 5y) + (-6 × - 2u) + (-6 × -3)

                   = -30y + 12u + 18

Answer:

8,576

Step-by-step explanation:

Add first.

688 + 7888 + 688 - 688

9264 - 688

= 8576

688 + 7.888 + 688 - 688 = ?

= 688 + 7.888 + 0

= 688 + 7.888

= 8.576✔

Answer:

D

Step-by-step explanation:

Answer:

D. i

Step-by-step explanation:

When putting i to a power, there is a rule.

i¹ = i

i² = -1

i³ = -i

i⁴ = 1

And it repeats again, such as:

i⁵ = i

i⁶ = -1

And so forth.

This rule also applies to -i, but the values are slightly different:

(-i)¹ = -i

(-i)² = -1

(-i)³ = i

(-i)⁴ = 1

And that one keeps repeating such as

(-i)⁵ = -i

(-i)⁶ = -1

And so forth.

So to answer your question, (-i)³ = i.

Answer:

16

Step-by-step explanation:

If you start with 8 and the common ratio is 2, all you would do is 8*2 which is 16. Hope this helps!!