All categories

3 years ago

Help with this please?....:)

Mathematics

1 answer:

marusya05 [52]3 years ago

7 0

Answer:

200. 96 cm^2

Step-by-step explanation:

If the area of a circle is $\pi$ $r^{2}$

$\pi$ = 3.14,

radius = 8 cm (r = diameter/2 ----> r = 16/2)

= $\pi$ $r^{2}$

$= 3.14 (8^{2})\\= 200. 96 cm^{2}$

You might be interested in

Softa [21]

Answer:

Lol I had the same question

Step-by-step explanation:

6 0

3 years ago

Two bags hold a total of 31 baseballs. The smaller one has 13 baseballs. How many baseballs are in the larger bag?

ankoles [38]

31 in total and the smaller one has 13. So just subtract 31-13 and it means there are 18 balls in the larger bag

5 0

3 years ago

Drag the tiles to the correct boxes to complete the pairs.

navik [9.2K]

A. 9

B. 24

C. 6

D. 16

Step-by-step explanation:

Given ratios are;

A. 2 : 3 = 6 : x

Product of mean = Product of extreme

$6*3=2*x\\18=2x\\2x=18$

Dividing both sides by 2

$\frac{2x}{2}=\frac{18}{2}\\x=9$

B. 4 : 7 = x : 42

Product of mean = Product of extreme

$7x=168$

Dividing both sides by 7

$\frac{7x}{7}=\frac{168}{7}\\x=24$

C. 2x : 48 = 3 : 12

Product of extreme = Product of mean

$2x*12=48*3\\24x=144$

Dividing both sides by 24

$\frac{24x}{24}=\frac{144}{24}\\x=6$

D. 12 : 15 = x : 20

Product of mean = Product of extreme

$15*x=12*20\\15x=240$

Dividing both sides by 15

$\frac{15x}{15}=\frac{240}{15}\\x=16$

8 0

3 years ago

Read 2 more answers

What is the value of the expression f(–3)? -15 3 -3 15

arlik [135]

Answer:

Option A, -15

Step-by-step explanation:

Step 1: Look at the function that needs to be outputted when x = -3

Since x = -3, that means it falls into the first category of x ≤ -3

Step 2: Carry out the instructions

The function for the first category is $-x^{2} + 2x$

$f(-3) =-(-3)^{2}+2(-3)$

$f(-3) = -(9) - 6$

$f(-3) = -15$

Answer: Option A, -15

6 0

3 years ago

Need help with 3x + 4x will mark branlist

vazorg [7]

Answer:

That's 7x

Step-by-step explanation:

Since the two have the exponent x then you can just add. <3

3 0

3 years ago

Read 2 more answers

Help with this please?....:)​

Help with this please?....:)