Help please will brain list

Answer:

30 minutes

Step-by-step explanation:

half an hour means 30 minutes

Answer:

2.5 kg

Step-by-step explanation:

1000 grams in 1 kg

2500 grams in 2.5 kg

Answer: 800 envelopes

Step-by-step explanation:

Sam and her friends are working at a rate of 100 letters in envelopes per hour per person. So, if there are 4 people helping including sam, you just have to multiply 400 by 2 hours, which will give you 800.

Answer:

epic

Step-by-step explanation:

Step-by-step explanation:

512^(1/n) = 8

(2⁹)^(1/n) = 2³

2^(9/n) = 2³

=> 9/n = 3, n = 3. (D)

P.S.

Law of Indices: (a^m)^n = a^(mn)

Answer:

I believe it's 12

Step-by-step explanation:

I hope this helps

Answer:

The width of the scale model is 33 inches.

Step-by-step explanation:

This question is solved making a relation with the scale model.

In the scale, 3 inches are worth 11 real feet.

The actual width of the building is 121 feet, so we find it's scale by a rule of three.

3 inches - 11 feet

x inches - 121 feet

[tex]11x = 121*3[/tex]

Simplifying by 3, both sides

[tex]x = 11*3 = 33[/tex]

The width of the scale model is 33 inches.

Answer: 5 1/2

Step-by-step explanation:

12 5/6 - 7 1/3

Find an equivalent fraction for 7 1/3

12 5/6 - 7 2/6

5 3/6

Simplify

5 1/2

12 5/6 - 7 1/3

12-7= 5 and

5/6-1/3= {lcm of 6 and 3}

5-2/6= 3/6

3/6 = 1/2

final answer = 5 1/2

Answer:

-2<x<8

see below for graph

Step-by-step explanation:

First, we need to solve the inequality.

Inequality: |x-3|<5

Split into two equations:

x-3<5

x-3>-5 (notice how the sign is flipped when we make the number negative)

let's start with x-3<5

add 3 to both sides

x<8

now

x-3>-5

add 3 to both sides

x>-2

The graph is below

the intersection is the solution.

Notice how I made the maroon line go to the right- which shows that it's greater than (for x>-2) and the silver line go to the left, which shows that it's less than (for x<8)

the equation is -2<x<8

Hope this helps!

Answer:

13x=y

-3 + 16 = 13

13x=y

The whole number of .24 is 24

.24 is a decimal but a whole number would be the only number which is 24. So the whole number of .24 is 24.

Answer:

False the radius would be 6.5

Step-by-step explanation:

Hope this Helps! :)

Answer:

I beilieve it would be about 24 tanks

Step-by-step explanation:

Answer:

x=5 and y=-2

Step-by-step explanation:

The given system of equations are :

7x +y = 33  ....(1)

-7x + 6y = -47 ....(2)

We need to find the solution of the given equations.

Adding equation (1) and (2) we get :

7x +y + (-7x) +6y = 33+(-47)

7y = -14

y = -2

Put the value of y in equation (1).

7x +(-2) = 33

7x-2=33

7x=33+2

7x = 35

x = 5

Hence, the solution of the above equations are x=5 and y=-2

Answer:

what is a square root...?

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

A.

I thought I just answered this

Answer: I learned about these a few years ago in math, and I hated it and sucked at it and it was awful, but ANYWAY, I think the answer is A, angle side angle

Step-by-step explanation: I think the answer is A because:

Angle-side-angle (asa) is when two angles and a side are the same on two triangles, they are congruent.

Angle-angle-side (aas) is when two sides and an angle are the same on two triangles, they are congruent.

Side-side-side (sss) is when all the sides of two triangles are the same, they are congruent.

Side-angle-side (sas) is when two sides and an angle are the same on two triangles, they are congruent.

So Angle side angle is the only one that makes sense. But again, I sucked at this when I was learning it, so I could be totally wrong. I'm pretty sure I'm right though. If I am, would you mind marking branilest? :)

Answer:

c

Step-by-step explanation:

its c

Answer:

370 millimeters of compound B is needed for 666 millimeters of solution.

Step-by-step explanation:

Given that:

4 millimeters of compound A are used for every 5 millimeters of compound B.

The scientist wants to make 666 millimeters of solution.

Let,

x be the multiplier number of the compounds in the solution.

Then,

4x + 5x = 666

9x = 666

Dividing both sides by 9

[tex]\frac{9x}{9}=\frac{666}{9}\\x=74[/tex]

Millimeters of compound B = 5x = 5(74) = 370 millimeters

Hence,

370 millimeters of compound B is needed for 666 millimeters of solution.

Answer:

0.8

Step-by-step explanation:

gradient = y difference/ x difference

m = (10-4)/(4--6)

132 feet/s

132/3.3 m/s

40 m/s

in 10132 feet/s

132/3.3 m/s

40 m/s

in 10 seconds

40 * 10

400 m

Answer:

Step-by-step explanation:

Write an equation for a rational function with: Vertical asymptotes at x = 4 and x = -6 x-intercepts at x = -5 and x = 3 y-intercept at 7

Answer:

B

Step-by-step explanation:

x + y =90

y= 4x +6

_______

x + y = 90

4x − y = -6

The equations are [tex]\rm x + y = 90[/tex] and [tex]\rm 4x - y = -6[/tex]. Then the correct option is B.

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

Given

The sum of x and y is 90.

And y is 6 more than four times x.

Let x and y be the numbers.

Then according to the first condition, we have

[tex]\rm x + y = 90[/tex]

Then according to the second condition, we have

[tex]\rm y = 4x + 6[/tex]

It can be written as

[tex]\rm 4x - y = -6[/tex]

Then the equations are [tex]\rm x + y = 90[/tex] and [tex]\rm 4x - y = -6[/tex].

Thus, the correct option is B.

More about the linear system link is given below.

https://brainly.com/question/20379472

look this question has already been answered

https://brainly.com/question/1556676

https://brainly.com/question/1556676

https://brainly.com/question/1556676

https://brainly.com/question/1556676

Answer:

y = 103

y = 180 - 77 = 103

Step-by-step explanation:

........

Answer:

103

Step-by-step explanation:

All we have to do is subtract the measure of the line which is 180 by 77 to get the measure of < y. Since they are adjacent to each other this concept will work but if they weren't it would be a little different.

[tex]y+77=180\\y=130[/tex]

So the measure of < y is 130°

Step-by-step explanation:

the answer is 72.70 cents

Answer: See explanation

Step-by-step explanation:

Markup is 39% of the cost.

Markup is what is added to the price to get the retail price.

39% × 72.72

0.39 × 72.72 = 28.3608

28.3608 ≈ 28. 36

Markup ≈ $28.36

Retail price is the price you get after you add the markup to the original price.

Retail price: Cost + Markup

Retail price: $72.72 + $28.36

Retail price = $101.08

Answer:

The answer is:

[tex]y = \frac{1}{3} x - \frac{5}{3} [/tex]

Step-by-step explanation:

❃Incase you forgot what the linear equation formula is ☟

[tex]y = mx + b[/tex]

❃Incase you also forgot, The is what the slope formula is ☟

[tex]m = \frac{y_2 - y_1 }{x_2 - x_1}[/tex]

➊ First: We are going to be solving for the slope.

[tex]m = \frac{ - 5 - 0}{ - 10 - 5} = \frac{ - 5}{ - 15} = \frac{1}{3} [/tex]

➋Second: We find the y-intercept.

[tex]y = mx + b \\ 0 = \frac{1}{3} (5) + b \\ 0 = \frac{5}{3} + b \\ \frac{ - \frac{5}{3} = - \frac{5}{3 } \: \: \: \: \: \: \: \: \: \: \: \: }{ - \frac{5}{3} = b} [/tex]

➌Third: Plug in.

[tex]y = \frac{1}{3} x - \frac{5}{3} [/tex]

Answer:

72

Step-by-step explanation:

3x24=72

Answer:

55= 39 2/7

Step-by-step explanation:

Answer:

See below

Step-by-step explanation:

As per the first row of proportional relationship, the proportion is:

The function is therefore:

a) Table is filled in below:

distance (cm)             |         weight (newtons)

20                               |         28

55                               |         55*1.4 = 77

140/1.4 = 100              |          140

1                                  |           1*1.4 = 1.4

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

b)  The scale should consider the coefficient 1.4, therefore x- axis will have a scale of 100 with intervals of 1 cm and y- axis will have a scale of 140 with intervals of 1.4 newtons