trying to help a friend

Answer:

B because 20 cm multiplayer by 9cm equals 180cm

Answer:

371m-2n+31

Step-by-step explanation:

3m+3n+368m-5n+31

=3m+368m+3n-5n+31

=371m+3n-5n+31

=371m-2n+31

Answer:

7.142857142857143

Step-by-step explanation:

500/70*10=answer above.

ratio of 500 km to 100 km is 5 : 1

Answer:

15

Step-by-step explanation:

12      x

--- =  ---- --> 120 = 8x

8      10

120 = 8x

x = 15

Answer:

Can you post a picture of the problems? Or type them out?

Step-by-step explanation:

Answer:

9 ft

Step-by-step explanation:

Hopefully this helps! :)

Answer:

1.2)60-35=25

therefore there are 25 boys in the class

1.2)35/60×100=58.333%

1.3)35:25

7 : 5

Answer:

4*s= 520

s= 130

area=s*s=130*130=16900m^2

Step-by-step explanation:

Answer:

60 grams sugar for 15 biscuits.

3x60 grams of flour, so 180 grams for 15 biscuits.

60÷15= 4 batches.

4 batches with 180 grams each- 4 x 180= 720 grams of flour.

Answer:

X= 6 cm

Step-by-step explanation:

hope it helps u

have a great day!!!

If two ratios are similar we called the ratios to be in proportion.

The length of side x is 6 cm.

If two ratios are similar we called the ratios to be in proportion

We have,

Two shapes:

Consider the bigger shape width = 15 cm and length = 10 cm.

Consider the smaller shape width = 9 cm and length = x cm.

Let the ratio of bigger shape:

= Width / length

= 15/10

Let the ratio of smaller shape:

= Width / length

= 9/x

If the two figures are mathematically similar we can say that the two figures are in proportion.

We can write it as:

15/10 = 9/x

3/2 = 9/x

x = 6

Thus the length of side x is 6 cm.

Learn more about proportion here:

https://brainly.com/question/26974513

#SPJ2

Answer:

naniiiiiiiiiiiiiiiiiiiiii

Answer:

uhmmuhmmmmmmmmuhmmmm

Answer:

10/1

Step-by-step explanation:

You do

6÷ 3/5

Flip the 3/5 then multiply

6 ° 5/3

Reduce the numbers with the greatest common factor 3

So 2•5

And that's 10

Ans is 10.

The numbers in 6 divided by 3/5 are labeled below:

6 = whole number

3 = numerator

5 = denominator

To make it a fraction form answer, you multiply the whole number by the denominator and make the result the new numerator. The old numerator becomes the new denominator:

6 x 5/3 = 30/3

Thus, the answer to 6 divided by 3/5 in fraction form is:

30/3

To make the answer to 6 divided by 3/5 in decimal form, you simply divide the numerator by the denominator from the fraction answer above:

30 / 3 = 10

The answer is rounded to the nearest two decimal points if necessary.

30/3 can be simplified to 10/1.

10/1 is an improper fraction and should be written as 10.

Step-by-step explanation:

(8x² + 3xy -20y²)-(-4x²+3xy+20y²)

= 8x² + 3xy -20y² + 4x² -3xy - 20y²

= 8x² + 4x² + 3xy - 3xy -20y² -20y²

= 12x² - 40y²

Answer:

1. The length of a necklace that you make at a rate of 10 cm per hour without taking a break.

Step-by-step explanation:

Okay so lets think about this by first looking at the graph we are given.

Whatever is going on, its going up, and steadily. There's no points were the line goes down or curves, right? So it's constant and forward. So now let's look at the possible answers.

1. The length of a necklace that you make at a rate of 10 cm per hour without taking a break.

Is is constant? Yes, the rate is 10 cm/hr. Does it stop? No, you don't take a break. Is it forward? Yes, you are making more of the necklace, not less.

Thinking of the y-axis as amount of necklace made, and x-axis as time spent, this is the right graph.

So this is your answer!! Just to be sure, let's look at the other possible answers.

2. The height of a balloon as it rises, gets caught in a tree, then continues to rise.

This is not constant, because it gets stuck and stops. But it is forward, because it is rising.

Thinking of the y-axis as the height of the balloon, and x-axis as time passed, this is NOT the right graph.

This is not the answer.

3. The total distance you are from home if you ride your bike three mi/hr for 1 hour, then stop for a rest.

It is not constant, because you stop and take a break. But it is forward, because you are moving forward.

Thinking of the y-axis as the speed or distance from home, and x-axis as time passed, this is NOT the right graph.

This is not the answer.

4. The volume of water in a bath tub as it is draining.

This one IS constant, but in the wrong direction. The tub is draining, not filling, so the amount is decreasing. This would be the correct graph, if the slope were negative and the line was like this \ and not like this /.

Thinking of the y-axis as the amount of water in the tub, and x-axis as time passed, this is NOT the right graph.

This is not the right answer.

These leave us with the first answer as being correct.

Answer:

20 units

Step-by-step explanation:

We can see that triangle QRS and triangle VWS are similar triangles.

Similar triangles are triangles in which the ratio of their corresponding sides are in the same proportion.

V is the midpoint of QS.

VS = 2a, QS = 2 * VS = 2(2a) = 4a

Since both triangles are similar triangles, hence:

[tex]\frac{VS}{QS}=\frac{VW}{QR}\\\\\frac{2a}{4a} =\frac{2a-2}{3a+6} \\\\\frac{2a-2}{3a+6} =\frac{1}{2} \\\\2(2a-2)=3a+6\\\\4a-4=3a+6\\\\a=10\ units\\\\VS=2a=2(10)=20\ units[/tex]

Answer:

D

Step-By-Step-Explanation

Answer:

Answer:

my best guess is c it could be b to

Step-by-step explanation:

1 of them is right

Answer:

The answer is C because the line in the middle is between 12 and 14

Answer:

Please ask your doubt elaborately .

Step-by-step explanation:

The question is incomplete.

Answer:

Sector area is a fraction of a circle's _________________.

circumference

Step-by-step explanation:

circumference

Answer:

False

A square is a quadrilateral with four right angles, two sets of parallel lines, and equal sides.

A rectangle is not equilateral, so it is not a square. Squares are rectangles, actually.

So, False

Hope that helps!

Step-by-step explanation:

Answer:

False, but can be true

Step-by-step explanation:

Rule for being a square.

1. All sides have to be congruent in length

2. Must have all 90°

3. has 4 sides and 4 angles (has to be a quadrilateral)

4. 2 pairs of parallel lines

A rectangle is not a square directly. It does not have congruent sides. Although, this means that a square is a specialized case of the rectangle. It will only be a square if all sides are congruent.

Answer:

1/7

Step-by-step explanation:

Given that :

Line AB contains points A (8, −4) and B (1, −5)

Slope = Rise / Run

Rise = y2 - y1 = - 5 - (-4) = - 5 + 4 = - 1

Run = x2 - x1 = 1 - 8 = - 7

Slope = Rise / Run = - 1 / - 7

Slope = 1/7

Answer:

I can.

Step-by-step explanation:

Answer:

To factorise an expression means to 'put into brackets' by taking out common factors. When factorising, always take the largest factors possible out of the expression.

Example 1 - Factorising simple linear expressions

a) Factorise: 3x+93x+9.

Notice 3 is both a factor of 3x3x and 99. We can factorise the expression by taking the 33 outside of the brackets.

3x+9=3(x+3)3x+9=3(x+3).

Hope it helps!!!

Answer:

B! Can I plz have Brainliest!!!!

Step-by-step explanation:

I've never gotten one before!

Answer:

Step-by-step explanation:

The have the same slope, -1, but different y-intercepts. The lines are parallel.

Answer:

The linear equations have the same slope, so the rate of change for each is the same. As long as the rate of change is the same, the lines will stay the same distance apart and not intersect.

Answer:

6. the table shows exponential growth.

7. the initial value is 3

8. im not sure about this

9. 0.25 or 25%

Answer:

No it doesn't

Step-by-step explanation:

It has two X values that means it can't be a function