Some pre algebra question idrk

Answer:

Step-by-step explanation:

Hi,

So from Andre's perspective, if he receive money that would be positive (cuz that will be adding to his collection) whereas, if he has to give money away that would be negative (cuz he would have to pay out of his pocket).

Think about it like this, people generally feel positive when they receive money and feel negative when they give away money. Apply this same concept.

Therefore,

A) Andre received money so = $25

B) Andre earned money so = $18

C) Andre had to give money away to buy the book so = - $10

D) Zero (0) would mean that he did not gain or lose any money.

Answer:

a. +25

b. +18

c. -10

d. 0 could represent the starting amount.

Step-by-step explanation:

Andy gets money from his uncle, so he is earning money, which makes it a positive.

Similar to b, Andy earns $18. He is earning it, so it is positive.

With C, he is losing money by paying for something, so it is negative.

Please give me brainliest if I helped!

Answer:

2:1

Step-by-step explanation:

1/2 equals 1:2. Hope this helped!!

Answer:

[tex]y= 2x - 3[/tex]

Step-by-step explanation:

rearrange equation into slope-intercept form

isolate y by subtracting x from both sides

[tex]2y=-x+14[/tex]

divide two from both sides

[tex]y= -\frac{1}{2}x+7[/tex]

here, we can note that the slope is -1/2, which to be perpendicular means it needs the negative inverse of slope

in other words, flip the fraction and take the negative of it, which gives m = 2

therefore plugging the given coordinates (6,9) and slope m = 2 into

[tex]y-y_{1} = m(x-x_{1} )[/tex]

therefore, we get

[tex]y-9=2}(x-6)[/tex]

distribute 2

[tex]y-9 = 2x - 12[/tex]

add 9 to both sides

[tex]y= 2x -3[/tex]

Answer:

y = 2x-3

Step-by-step explanation:

find the slope intercept first by isolation the y in the first equation

then because its asking for the perpendicular equation you will flip the x in the slope intercept equation.

now youll want to plug in (6,9) into y = 2x + a

and you will get -3

then youll have your answer

Answer:

4/1

Step-by-step explanation:

2+2=4 and 4/1 is the fraction form as 4

have a great day!

Part A

The rectangular prism is a box, and the volume of the box is

V = L*W*H

so we simply multiply the length (L), width (W) and height (H)

In this case, the dimensions of the box are

The order doesn't matter in this case because we can multiply two or more numbers in any order we want (eg: 6*7 = 7*6 = 42)

So,

V = L*W*H

V = 13*5*6

V = 390

The volume of one box is 390 cubic inches.

I'm not sure what formula Diego is using. It seems like he's computing the perimeter of the base (the 13 inch by 5 inch rectangle) to get 13+5+13+5 = 36 inches. Then he's multiplying that by 6 to get 36*6 = 216; however, this value is meaningless because we won't involve the perimeter at all when it comes to finding the volume.

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

So in short, Diego is incorrect. All Diego needs to do is multiply the three values 13, 5 and 6 to get the volume of one box to be 390 cubic inches.

====================================================

Part B

Use the same formula back in part A. That formula being V = L*W*H.

We'll use this formula to compute the volume of each carton.

All three cartons have a volume larger than 390 cubic inches, meaning that we can fit at least one box.

If one box is 390 cubic inches, then 8 of them lead to a volume of 8*390 = 3120 cubic inches. Note that this value (3120) is larger than the volume of carton B. There's no way that Diego can use carton B to hold all 8 boxes at once. So we have no choice but to rule it out.

Carton C on the other hand has a volume of 3432 cubic inches, which is larger than the 3120 figure we got. Meaning he can house all 8 boxes here. The amount of leftover space is 3432-3120 = 312 cubic inches which is what the packing material will take care of. In other words, you need 313 cubic inches of packing material for carton C. Carton A is a similar story, but will require more packing material (since carton A's volume is larger).

The best option is to go with carton C. It allows him to hold all the 8 boxes, with the least amount of packing material required.

Answer:

2544 ft

Step-by-step explanation:

First, find the area of the pool.

A= πr²

if we fill in the radius, use 3.14 for pi, and solve for A, that's

A=(3.14)(20.5)²≈1319.585

The area of the pool is roughly 1319.585 ft

Now, we find the area of the triangle

A=(ab)÷2

put in 'a' and 'b' (the triangle legs) and solve

A=(84×92)÷2=3864

Finally, subtract the area of the pool from that of the triangle

3864-1319.585=2544.415 which rounds to 2544 ft

hopefully that helps and you might want to double check but that's what I got :)

Answer:

The two other angles are 29 degrees and 61 degrees

Step-by-step explanation:

There are 180 degrees in a triangle. Given this is a right triangle one of the angles is 90 degrees. As in the other two angles have to equal up to 90 degrees. Now we have to find x.

180 - 90 = 90

If x equals 28

28 + 1 = 29

2 x 28 + 5 = 61

29 + 61 = 90

The two other angles are 29 degrees and 61 degrees

Answer:

29 , 61

Step-by-step explanation:

Sum of all angles of a triangle = 180

90 + x + 1 +2x +5 = 180 {Combine like terms}

96 + 3x = 180         {Subtract 96 from both sides}

         3x = 180 - 96

          3x = 84 {Divide both sides by 3}

           x = 84/3

x = 28

x +1 = 28 +1 = 29

2x +5 = 2*28 + 5 = 56 + 5 = 61

Answer:

1.4(+2)−10>38=false

2.4( − 1) < 8= true

3.4( + 2) > 8= false

4.2( + 4) ≥ 16=false

Step-by-step explanation:

Answer:

Naman is 12 years old

Step-by-step explanation:

This means his sister is 3 which means in 20 years Naman will be 32 and his sister will be 23. Double 23 and you get 46 and 46 - 32 is 14

Answer: 737.111

Step-by-step explanation: there

Answer: 26%

Step-by-step explanation:

20+52+34+71+23= 200

52/200 = 26/100

Answer:

26% of the jelly beans are yellow

Step-by-step explanation:

To find this we add up all the jelly beans which is 200 jelly beans

Then we divide it by the number of yellow jelly beans which is 52/200

which then equals .26. In a percentage that is 26%

Answer:

i dont know the part one but

well 5% of 30 = 6

so that means it would be 6%

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Hope this helps!

Answer:

D. 50% of the budget on car payments and cell phone bills

Step-by-step explanation:

First we take the amount of the car and phone then add it together

So, 275+125 = 400

Then we find 50% or 1/2 of 800

A way to do that is 800 ÷ 2 = 400

So we know that 400 = 400, we know the answer is correct

Answer:

the width is 22.5 ft

Step-by-step explanation:

Answer: 38 laps a day

Step-by-step explanation: So, he swam three days and he swam 114 laps in total. What you need to do is divide

how many laps he did in total/how many days he swam

114/3=38

Hope this helps, if you liked my answer please mark me brainliest, it really helps :)

Answer:

42

Step-by-step explanation:

180÷30=6

6×7=42

there you go

Answer:

5

Step-by-step explanation:

U would have to multiply 3x10 that would equal 30 then you figure out how many '30s can fit into 6 that would equal 5

Hope it helps

Answer:

Step-by-step explanation:

it doesn't really say what the "face" is, but i'll guess that it's the part marked in yellow?  if that's the case then it's just  10 * 10  twice for each of the squares.  Really you couldn't see that?  :/      200 is the answer

Ok soo for the first one we're gonna use sine, (remember SOH CAH TOA) since we know the value of the hypotenuse.

Sin37° = x/9.3

0.6018=x/9.3

x= 5.59674

The last one we'll use cosine because we know the value of the side adjacent to 96°.

Cos42°=5.1/y

0.7431=5.1/y

y= 6.86272692

I assume it has you round your answers to the nearest tenth so the first one would be 5.6 and the second would be 6.9 .

Hope this helps!

Answer:

The answer is m = 150

Step-by-step explanation:

A - 700 = 250 + 3m

B - m = 150 miles

C - m = 150

3(150) + 250 = 700

     ↓   ↓   ↓   ↓   ↓

  450 +  250 = 700

         ∨         ↓   ↓

        700  =  700 ✓

Answer:

16

Step-by-step explanation: