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Ludmilka [50]
3 years ago
11

What is x+y=3 please help

Mathematics
1 answer:
il63 [147K]3 years ago
5 0
X=1 and y=2 1+2=3 the letters are in place of the letters
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A coin collector has $45 in just dimes and quarters in a piggy bank he counted all the coins and there are 240 total how many ea
Whitepunk [10]

Answer:

The number of <u>dimes are 100</u> and number of <u>quarters are 140.</u>

Step-by-step explanation:

Let the number of dimes be 'd' and quarters be 'q'.

Given:

The sum of amount is $45.

The total number of coins are 240.

1 dime = $0.10

∴ 'd' dimes = \$0.10d

1 quarter = $0.25

∴ 'q' quarters = \$0.25q

Now, as per question:

d+m=240-----1\\0.1d+0.25q=45---2

Multiplying equation (1) by -0.1 and adding the result to equation (2), we get:

-0.1d-0.1q=240\times -0.1\\-0.1d-0.1q=-24\\0.1d+0.25q=45\\-----------\\0.15q=21\\q=\frac{21}{0.15}=140\\\\d=240-q=240-140=100

Therefore, the number of dimes are 100 and number of quarters are 140.

7 0
3 years ago
A=960 rounded to the nearest 10 <br> b=89.0 rounded to 1 DP <br> Find the minimum (to 2 DP) of a÷b
astraxan [27]

Step-by-step explanation:

a÷b=960÷89=10.78651685=10.79 or 17.8

3 0
3 years ago
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Two equivalent ratios 3:4<br> What are 2 equivalent ratios to 3:4
Step2247 [10]

Answer:

9:12 and 12:16

Step-by-step explanation:

3/4 = 0.75

9/12 = 0.75

12/16 = 0.75

4 0
3 years ago
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I will make brainiest if you answer correctly!!!<br>What is the difference between a human and a dog
KonstantinChe [14]

Dogs walk on 4 legs.

Dogs have a stronger smell than us.

Dogs have a thicker layer of fur.

Dogs are allergic to types of food that we can digest.

Dogs only live around 15 years, and we live up to around 70.

Dogs have sweat glands on their pads and nose.

Dogs have a smaller population than dogs.

Dogs sleep more than humans.

Dogs live for survival, not for fame, money, nor any other materialistic possessions.

3 0
3 years ago
Help me match these pleasee and explain!
DiKsa [7]
3x=9 is C
4x+12 is A
X+1 is B
5 0
3 years ago
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