Can someone help me with these problems step by step? It’s pre-algebra so it’s not rlly that hard.

Answer:

58

Step-by-step explanation:

follow the pattern. The pattern is to take away 10, for each subsequent number.

Answer:

-9x²

Step-by-Step explanation:

-(3x)²

In PEMDAS, we solve the exponent first then multiply.

-(3x)²

-(9x²)

-9x²

Answer:

$48.33

Step-by-step explanation:

1. Find the amount of the sales tax by multiplying the tax percentage by the sales price.

$45 × 7.4% = $3.33

2. Add the amount of the sales tax back to the sales price.

$45.00+$3.33 = $48.33

Answer:

12

Step-by-step explanation

First, you would square 4 and get 16, next square 2 to get 4

then, subtract to get to 12

Answer:

12

Step-by-step explanation:

16-4

Answer:

Answer:

20

Step-by-step explanation:

Answer:

{0, 10, 42}

Step-by-step explanation:

The Domain acts like x and the Range acts like y and f(x) = y

f(x) = 2x^2 - 8

f(-2) = 2(-2)^2 - 8

f(-2) = 2(4) - 8

f(-2) = 8 - 8

f(-2) = 0

f(3) = 2(3)^2 - 8

f(3) = 2(9) - 8

f(3) = 18 - 8

f(3) = 10

f(x) = 2x^2 - 8

f(5) = 2(5)^2 - 8

f(5) = 2(25) - 8

f(5) = 50 - 8

f(5) = 42

To check, look at the graph below ---

                                                             |

                                                            V

Answer:

5 doors

Step-by-step explanation:

Can of spray paint : door painted = 2/5 : 1

The worker has 2 cans of spray paint total.

How many doors can the worker paint?

Let x = number of doors the worker can paint

Can of spray paint : door painted

2 : x

Equate both ratios

2/5 : 1 = 2 : x

2/5 ÷ 1 = 2/x

2/5 × 1/1 = 2/x

2/5 = 2/x

Cross product

2 * x = 5 * 2

2x = 10

x = 10/2

x = 5 doors

The worker can paint 5 doors with 2 cans of spray paint

The percentage is shirt is 5%

Answer:

2 cans

Step-by-step explanation:

Given that :

Radius of pool = 30 feets

Using the relation for the Area of a circle :

Area = pi*r^2

Thus,

Area of pool = 3.14 * 30^2

Area of pool = 3.14 * 900 = 2826feet²

Paints are sold in cans of 5 gallon

5 gallon of paint = 1500 feet²

Least number of 5 gallon can required :

2826 feet² / 1500 feet² = 1.884 cans

Hence,

Least number of 5 gallon can required = 2 cans

Answer:

56 students

Step-by-step explanation:

Because there are 80 students and only 70% enjoyed it, 70% is equal to 0.7 so you would multiply 80 by 0.7.

Answer:

$9.35

Step-by-step explanation:

14.86+25.88+5.76=46.5

55.85-46.5=9.35

Answer:

The rounded number would be nine

Step-by-step explanation:

It would be nine because you convert 55.85 to 56 then convert 14.86 to 15 convert 25.88 to 26 and convert 5.76 to 6 then subtract all of that to get nine hope it helps

Answer:

FOREVER AND ALWAYS

Step-by-step explanation:

i love you more than you know:( <3

see you someday

The compound inequality which represents the given situation is 20 < x < 30.

A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

Let's say x represents the spend.

As per the given,

You can spend less than $30,

x < 30

You must also spend more than 20.

x > 20

Compound,

30 < x < 20

Hence "The compound inequality which represents the given situation is 20 < x < 30".

For more about inequality,

brainly.com/question/20383699

#SPJ2

1.) As the sun light travels along path through as atmosphere to reach our eyes, the blue light has been mostly remove living mostly red and yellow light remain since red light waves are scattered the list by atmospheric gas molecules

2.) Rainbows are formed when it’s misty or spray the sky with water. It’s not solely just from after a rain; you only need water that can act at as prism and light to shine to create a rainbow.

3.) Having gold at the end of rainbow is just a myth since you can never reach the end of the rainbow. A rainbow is caused by dispersion of light in water droplet which is why they occur when sun comes out after rain.

Answer:

b

Step-by-step explanation:

son

Answer:

86.74 pounds

Step-by-step explanation:

Team A

The mean weight for team A with 15 members is 140 pounds

Total weight for Team A = Mean × number is members

= 15 × 140 pounds

= 2100 pounds

Team B

The mean weight for team B with 7 members is 135 pounds

Total weight for Team B = Mean × number is members

= 7 × 135 pounds

= 945 pounds

Team C

Mean weight for team C with 20 members is 160 pounds.

Total weight for Team C = Mean × number is members

= 20 × 160 pounds

= 3200 pounds

The total number of members from the 3 teams =( 15 + 7 + 20) members

= 42 members

The total weight in pounds from the 3 teams = (2100 + 945 + 3200)

= 6245 pounds

The overall mean weight for all three teams is calculated as:

6245/42 members

= 86.736111111 pounds

Approximately = 86.74 pounds

Answer:

(−∞,∞)

Step-by-step explanation:

I think this is the answer

Answer:

Infinante solutions

Answer:

(5,1)

Step-by-step explanation:

2x-y=9

(5,1)

There are many ordered pairs you could choose. For instance if x=0, then y=9. So you have the pair (0,9). If y=0, then 2x=9, so x=4.5. So you have the pair (4.5,0). You can keep making pairs by plugging in different values!

Answer:

C and D are parallel

Step-by-step explanation:

If b⊥c and b⊥d, then that means that they are both parallel because they both have a 90 degree anglewith line B.

Answer:

| | (Parallel)

Step-by-step explanation:

I'm assuming that is what it is asking. if b and c are perpendicular, that means they form 90 degrees on all angles. The same for b and d. So if both c and d are perpendicular to b, then they are parallel.

Answer:

its 7 i got it right on the test :)

Answer:

182x + 16

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define

2(x - 4) + 4(45x + 6)

Step 2: Simplify

Answer:

Step-by-step explanation:

here you go mate

step 1

2(x-4)+4(45x+6)   equation

step2

2(x-4)+4(45x+6)  distribute

(2)(x)+(2)(-4)+(4)(45x)+(4)(6)

2x+(-8)+180x+24

step 3

2x+-8+180x+24  combine the like terms

(2x+180x)+(-8+24)

182x+16

Answer:

12 pack

Step-by-step explanation:

12 pack = $4.75

1 bottle = $0.90

7 × 0.90 = $6.30

Answer:

$20,240

Step-by-step explanation:

Multiply 22,000 by 0.92% since if you subtract 0.08 which is equivalent to 8% from 1, you would need that percentage to get to your final answer which is $20,240.

Another option is to do the same thing except multiply 22,000 by 0.08% in which $1,760 is being cut off as it decreases.  Subtract that number from $22,000 to get the same answer mentioned earlier.

Answer:

$20,240

Step-by-step explanation:

This is a simple interest formula.

$22,000*(8%/100%) = $1760

$22,000-$1760 = $20,240

Answer:

SAS or side-angle-side because there are two congruent sides with a congruent angle between them

Step-by-step explanation:

Answer:

6732FDX

Step-by-step explanation:

Use calculator

Answer:

-4x^4-9x^3+4x^2-7x-7

Step-by-step explanation:

Answer:

2.8 pounds

Step-by-step explanation:

2 + 12 = 14

so there 14 pounds

14 / 5 = 2.8

each freind will receive 2.8 pounds of berries

Answer

i think its....

Step-by-step explanation: