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Andrew [12]
3 years ago
9

What is 87-54? plzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
nikdorinn [45]3 years ago
7 0

Answer:

33

Step-by-step explanation:

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A cinema has 100 seats if 90 people are inside what percentage of seats are taken
weqwewe [10]

Answer:

90%

Step-by-step explanation:

Since 90/100 seats are taken then we can say;

90/100=9/10=.90*100=90%

6 0
3 years ago
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George and Paul use a metal alloy that is 18.1% copper to make jewelry. How many ounces of an alloy that is 14% copper must be m
ella [17]

Answer:

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

Step-by-step explanation:

Each ounce of the 14% copper contains 0.14 ounce of pure copper.

Each ounce of the 23% copper contains 0.23 ounce of pure copper.

Each ounce of the 18.1% copper contains 0.181 ounce of pure copper.

Use x ounces of the 14% and y ounces of the 23% to make 90 ounces of 18.1% alloy.

x+y  = 90

y = 90-x

0.14x + 0.23y = 0.181·90

0.14x + 0.23(90-x) = 16.29

0.14x + 20.7 - 0.23x = 16.29

-0.09x + 20.7 = 16.29

4.41 = 0.09x

x = 49

y = 90-x = 41

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

7 0
3 years ago
In the figure below, 7 || h. Find the values of y and x.<br> 630<br> 3 x<br> 150 /yº
VikaD [51]

Answer:

jahaheueidirjirreieir8e9r8r

6 0
3 years ago
Find a8 of the sequence 10,9.75,9.5,9.25,….
balandron [24]

Answer:

10,9.75,9.5,9.25,9, 8.75 , 8.5, 8.25, 8...

Step-by-step explanation:

Subtract 0.25 from each to find the next number

8 0
3 years ago
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The sum of two number is 14 and their difference is 10 then what will be their multiplication
Tomtit [17]

12+2=14

12-2=10

12 x 2= 24

3 0
3 years ago
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