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2 years ago

If the diameter of a circle changes from 6 cm to 12 cm, how will the circumference cha

Mathematics

1 answer:

enot [183]2 years ago

8 0

Step-by-step explanation:

when radius(r) of the circle = 6cm

area of the circle=2πr=2π6=12πcm

when radius (R) of the circle=2πR=2π12=24πcm

multiplies by 2

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14 bugs are crawling on the steps. Some of the bugs are black, and 4 are

docker41 [41]

Answer:

b = 14-4

Step-by-step explanation:

Let the number of black bugs be b

Let the number of green bugs be g

If 14 bugs are crawling on the step, then;

b + g = 14 ....1

If there are 4 green bugs, then g = 4

Substitute g = 4 into the equation

b + g = 14

b + 4 = 14

b = 14 - 4

Hence the sentence that can be required to find the number of black bugs is b = 14-4

8 0

2 years ago

Write an equation of the line shown. Then use the equation to find the value of x when y=112

PtichkaEL [24]

Answer:

$y = 8x + 16$

$x = 12$

Step-by-step explanation:

Given two points on the line (0, 16) and (3, 40), an equation for the line can be written using the slope-intercept line equation which takes the format $y = mx + b$ .

Where,

$m = slope = \frac{y_2 - y_1}{x_2 - x_1}$

b = y-intercept or the point at which the line cuts the y-axis.

Let's find slope (m) using the slope formula:

Let,

$(0, 16) = (x_1, y_1)$

$(3, 40) = (x_2, y_2)$

$slope (m) = \frac{40 - 16}{3 - 0}$

$slope (m) = \frac{24}{3}$

$slope (m) = 8$

Find b. Substitute the values of x = 0, y = 16, and m = 8 in the slope-intercept formula to find b.

$y = mx + b$

$16 = 8(0) + b$

$16 = 0 + b$

$16 = b$

$b = 16$

Plug in the values of m and b into the slope-intercept formula to get the equation of the line.

$y = mx + b$

$y = 8x + 16$

Let's use the equation to find x when y = 112.

$y = 8x + 16$

Substitute y = 112 in the equation

$112 = 8x + 16$

$112 - 16 = 8x$

$96 = 8x$

Divide both sides by 8

$12 = x$

$x = 12$

8 0

2 years ago

Find the value of x in 18 : 9 = 36 : x?

Misha Larkins [42]

Answer is B Step-by-step explanation:

18/9/ 36

36/ 2

8 0

2 years ago

10% of the songs on Emma's playlist are in Spanish. If she has 6 Spanish songs on her playlist, how many total songs are on it?

Vinvika [58]

If 10% of songs represents 6 songs,

then 100% of songs represents (100 * 6) / 10 = 60 songs

The playlist has a total of 60 songs.

7 0

2 years ago

Estimate the quotient: 0.233 ÷ 0.047 ASAP this is my lats question pls help

zlopas [31]

Answer:

Hey buddy, here is your answer. Hope it helps you.

Step-by-step explanation:

4.957 something is the answer

4 0

2 years ago