All categories

3 years ago

Plz help I need help

Mathematics

1 answer:

ruslelena [56]3 years ago

8 0

Answer:

x = 6

Step-by-step explanation:

<em>This can be written as a ratio</em>

7 : 2

21 : x

<em>If you times one side by 3, you have to multiply the other side by three too:</em>

2 × 3 = 6

∴ x = 6 when y = 21

You might be interested in

Hi!! I need some help with those exercises can anybody help me please !! Thanks you

elena55 [62]

Answer:

Step-by-step explanation:

(a+b)^2=a^(2)+2ab+b^(2)

(a-b)^2=a^(2)-2ab+b^(2)

13)

(x+2)^(2)-(x-1)^2

x^(2)+4x+4-(x^(2)-2x+1)

x^(2)+4x+4-x^(2)+2x-1

6x+3

15)

(x+5)^(2)-(x+1)^2

x^(2)+10x+25-(x^(2)+2x+1)

x^(2)+10x+25-x^(2)-2x-1

8x+24

6 0

2 years ago

Find y if the distance between

Helen [10]

Answer:

y = 6

Step-by-step explanation:

$\sqrt{(10-3)^2 + (y+18)^2} = 25 \\ 49 + y^2 + 324 + 36y = 625 \\$

y^2 + 36y - 252 = 0

(y-6)(y+42) = 0

y = 6 (accettable)

y = -42 (not accettable)

5 0

2 years ago

Meg plotted the graph below to show the relationship between the temperature of her city and the number of sweaters sold at a st

makvit [3.9K]

Answer:

please put in the graph

7 0

2 years ago

Trash Cans: Elliot's family has a cylinder shaped trash can. It takes the family a few days to fill the trash can up. Elliot wan

atroni [7]

Answer:

$4696.0 in.^3$

Step-by-step explanation:

The trash can has a cylinder shape, so we have to calculate the volume of a cylinder.

The volume of a cylinder is given by the formula

$V=\pi r^2 h$

where

V is the volume

r is the radius of the base

h is the height of the cylinder

In this problem, we have:

h = 24.90 in. is the height of the can

d = 15.50 in. is the diameter of the can, so the radius is half of this value:

$r=\frac{d}{2}=\frac{15.50}{2}=7.75 in.$

Therefore, the volume of the trash can is:

$V=\pi (7.75)^2 (24.90)=4696.0 in.^3$

5 0

2 years ago

What is a Ratio mean?

dybincka [34]

Answer:

In mathematics, a ratio indicates how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six. Similarly, the ratio of lemons to oranges is 6∶8 and the ratio of oranges to the total amount of fruit is 8∶14.

Step-by-step explanation:

the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

5 0

3 years ago