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inessss [21]
3 years ago
15

An electric heater uses 3/5 watts power each hour. How man watts power will the heater use in a 1/2 hour

Mathematics
1 answer:
Alenkasestr [34]3 years ago
7 0

Answer: 3/10 watts


Step-by-step explanation:

3/5 converts to 6/10

6/10 / 2 = 3/10


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Write 120 as a product of primes.<br>Use index notation​
zvonat [6]

Answer:

2³×3×5

Step-by-step explanation:

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3 years ago
The radius of a large sphere is 8 times the radius of a small sphere. the surface area of the large sphere is how many times the
kondaur [170]
Large sphere's radius = R,
small sphere's radius = r, R = 8r
surface area of a sphere (SA) = 4×pi×radius^2
So what we need is the SA of the larger in terms of the smaller sphere, so if:
SA (of R) = 4×pi×R^2, then plug in "8r" for "R"...
SA = 4×pi×(8r)^2 = 4×3.14×64r^2
SA = 12.57×64r^2 = 804 r^2
Therefore the SA of the larger sphere is 804 times the SA of the smaller sphere.
I hope that makes sense!
8 0
4 years ago
The ratio of kangaroos to koalas in the Australian zoo is 6 to 8 . If there are 132 koalas in the zoo how many kangaroos are in
dolphi86 [110]

Answer:

99

Step-by-step explanation:

set it up as a proportion 6/8 = x/132. then solve

8 0
3 years ago
The mean of a set of data is 90. Five of the six data points are given as 92, 201, 54, 43, and 13. What is the value of the sixt
STatiana [176]
The first step is to multiply 90 x 6 = 540, this is because the data should have 6 terms and since the mean is 90 all terms should add to 540, then add the terms you already have 92 +201+54+43+13= 403 but you need to have 540 so the last number is the difference 540 - 403 = 137
5 0
3 years ago
Please help me outtt ~ I’ll give u brain
Hunter-Best [27]
The answer is no because the problem has no solution. Hope this helps
4 0
3 years ago
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