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ycow [4]
3 years ago
6

Kayla is give a monthly allowance. She puts 40% of the money directly into her savings account. She spends $15 at the movies wit

h her friends. At the end of the month, she has $3 left. How much is her monthly allowance?
Mathematics
1 answer:
mars1129 [50]3 years ago
4 0
£30
This is because if she has put 40% in to savings she has 60% left. This 60% is 15 + 3 (the money she spent at the movies and the money she has left) = £18
So 60% : £18
10% : £3 (divide by 6)
100% : £30 (multiply by 100)
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Which statement does NOT correctly compare silicon with another element? A) Silicon is a better conductor of electricity than su
Vesna [10]

Answer:


Step-by-step explanation:

Silicon is a member of Group 14 (IVA) in the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. Silicon is also part of the the carbon family. Other carbon family elements include carbon, germanium, tin, and lead. Silicon is a metalloid, one of only a very few elements that have characteristics of both metals and non-metals.

Silicon is the second most abundant element in the Earth's crust, exceeded only by oxygen. Many rocks and minerals contain silicon. Examples include sand, quartz, clays, flint, amethyst, opal, mica, feldspar, garnet, tourmaline, asbestos, talc, zircon, emerald, and aquamarine. Silicon never occurs as a free element. It is always combined with one or more other elements as a compound.By the early 1800s, silicon was recognized as an element. But chemists had serious problems preparing pure silicon because it bonds (attaches) tightly to oxygen. It took chemists many years to find out how to separate silicon from oxygen. That task was finally accomplished in 1823 by Swedish chemist Jons Jakob Berzelius (1779-1848).

Silicon's most important application is in electronic equipment. Silicon is one of the best materials from which to make transistors and computer chips. The total weight of silicon used for this purpose is relatively small. Much larger amounts are used, for example, to make metal alloys. An alloy is made by melting and mixing two or more metals. The mixture has properties different from those of the individual metals.

6 0
3 years ago
Read 2 more answers
Pls how do you verify this ​
aev [14]
Plug 15 in for x i think
3 0
3 years ago
Read 2 more answers
Plz answer ASAP thanks
Nana76 [90]
A = 1/2(8)(10) + 1/2(6)(8)
A = 40 + 24
A = 64

answer
64 in^2
6 0
3 years ago
Part A: Virginia earned $14 walking her neighbors' dogs on Saturday. She earned some extra money on Sunday doing the same thing.
xxTIMURxx [149]

Answer:

Part A: V = 14y; Part B: y = 2x - 2  

Step-by-step explanation:

Part A: Virginia

 Let y = the number of dogs Virginia walked

and V = the money Virginia earned. Then

     V = 14y

Part B: Alicia

Let x = the number of dogs Alicia walked. Then  

    2x = twice the number of dogs Alicia walked and

2x - 2 = two less than twice the number of dogs Alicia walked. Then

      y = 2x - 2

 

7 0
3 years ago
I need help with both please
Svetach [21]
What?????????????????
5 0
3 years ago
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