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Tatiana [17]
3 years ago
9

1.Find the area of a triangle that has a base of 30 feet and a height of 12 feet.

Mathematics
1 answer:
zysi [14]3 years ago
4 0
1. A = (1/2)bh = (1/2) * 30 ft * 12 ft = 180 ft^2

2. 21/25 * 100 = 84%

3. $13.26/(3 boxes) = $4.42/box
You might be interested in
How long is the shortest route from Allenville to Greenwood?
likoan [24]

Answer:

I think it is 28.

Step-by-step explanation:

Because if you add Allenville and Ashlards it distance to Ashlards to Greenwoods it equals 28.

19.4 + 8.6 = 28

HOPE THIS HELPS!

7 0
3 years ago
At a school fair, a box contains 36 yellow balls and 64 red balls. One-fourth of the balls of each color are
belka [17]

Answer:

The probability that a randomly selected ball labeled "Win a prize" is red is

16%

Step-by-step explanation:

I think thats correct but i dont know about the others

5 0
3 years ago
A salesman who makes $32,500 a year gets promoted to sales manager, earning a new salary of $43,250. What was the rate of increa
OLEGan [10]

Answer:

33.1%

Step-by-step explanation:

First, calculate the dollar amount of the increase.  Subtract $32,500 from $43,250.  We get $10,750.

Next, divide this $10,750 by the original salary, $32,500, to determine what fraction of $32,500 is represented by $10,750:

fraction = $10,750/$32.500 = 0.331

Convert this to a percentage by multiplication by 100%:  33.1%

The rate of increase of the saleperson's salary was 33.1%.

8 0
2 years ago
A sculptor has just finished creating a large wooden sphere for a sculpture he is working on. The sphere has a radius of 4.3 fee
Licemer1 [7]
Density = mass/volume

the mass is 10578.9 pounds

the volume of a sphere is v = 4/3 πr^3

v = (4/3) (π) (4.3)^3
v = 333.04

10578.9 / 333.04 = 31.76

the final density is 31.76!!
6 0
2 years ago
Is the sequence geometric? if so, identify the common ratio 1/5,2/15,4/45,8/135,16/405,...
Romashka-Z-Leto [24]
So have the sequence: \frac{1}{5} , \frac{2}{15} , \frac{4}{45} , \frac{8}{135} , \frac{16}{145} ,...
To check if the sequence is geometric, we are going to find its common ratio; to do it we are going to use the formula: r= \frac{a_{n} }{a_{n-1}}
where 
r is the common ratio 
a_{n} is the current term in the sequence 
a_{n-1} is the previous term in the sequence
In other words we are going to divide the current term by the previous term a few times, and we will to check if that ratio is the same:

For a_{n}= \frac{2}{15} and a_{n-1}= \frac{1}{5}:
r= \frac{ \frac{2}{15} }{ \frac{1}{5} }
r= \frac{2}{3}

For a_{n}= \frac{4}{45} and a_{n-1}= \frac{2}{15}:
r= \frac{ \frac{4}{45} }{ \frac{2}{15} }
r= \frac{2}{3}

For a_{n}= \frac{8}{135} and a_{n-1}= \frac{4}{45}:
r= \frac{ \frac{8}{135} }{ \frac{4}{45} }
r= \frac{2}{3}
As you can see, we have a common ratio!

We can conclude that our sequence is a geometric sequence and its common ratio is \frac{2}{3} 
7 0
3 years ago
Read 2 more answers
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