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inn [45]
3 years ago
13

Evaluate when y=4 and 1 = 2 xy + 2x2

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
6 0

Answer:

log  ( 100 )    √ 16     √ 75

Step-by-step explanation:

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PLEASE HELP!!! I WILL MARK BRAINLEST!!!
storchak [24]

Answer:

Each hat is $5

Each mask is $3

Step-by-step explanation:

Hat= x dollars

Mask= y dollars

Now,

3 hats and 4 mask sold = $27

We can write

3x + 4y = 27

Adding the second equation (-1 times 1st equation) gives us;

3x + 6y = 33

-1* (3x + 4y = 27)

3x + 6y = 33

-3x -4y = 27

2y = 6

y = 6/2

***y = 3***

Now we replace y= 3 into 1st equation and solve for x:

3x + 4y = 27

3x + 4(3) = 27

3x + 12 = 27

3x + 15

x = 15/3

***x= 5***

Each hat costs $5

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6 0
3 years ago
Write this ratio as a fraction in simplest form without any units. 28 quarts to 9 gallons You can use the table below to help co
jolli1 [7]

Answer:

  7/9

Step-by-step explanation:

In order to write the fraction without any units (as a pure number), we must have units in the numerator and denominator that are the same. Then the units cancel.

<h3>Convert to gallons</h3>

We are given the conversion ...

  4 quarts = 1 gallon

Multiplying by 7, we see ...

  28 quarts = 7 gallons

<h3>Ratio</h3>

This lets us write the desired fraction as ...

  (28 quarts)/(9 gallons) = (7 gallons)/(9 gallons) = 7/9

The ratio in simplest form is 7/9.

4 0
1 year ago
Mrs. Haines paid $43.94 per gallon for 12.7 gallons of gas. She uses some credit card points to get $0.52 off per gallon. What i
rjkz [21]
3.98 cents a gallon this is a rounded to the nearest hundred
8 0
3 years ago
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Kipish [7]

Answer:

add

Step-by-step explanation:

add

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2 years ago
If 18 is 45% of a value, what is that value?
Andrew [12]

Answer:

it is 40 :)))

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2 years ago
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