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Dafna1 [17]
3 years ago
13

An aquarium store recommends that the minimum size for a goldfish tank is 5.8 gallons plus an additional 0.6 gallon for each

Mathematics
1 answer:
insens350 [35]3 years ago
5 0

Answer: 5.8 +0.6x

Step-by-step explanation:

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Help me graph the numbers
ValentinkaMS [17]
The first one would be 1 dash after the last one. The second one would be in the middle of the 3rd and 4th dash, the 3rd would b at 2. The fourth would b slightly after the 1st dash after 3. And the last would be in the middle of the 1st dash after 2.5 and the 2nd
6 0
3 years ago
1. 5% of $30 =
stira [4]

Answer:

1 is 1.5

2. is 15

3 is 0.4

4. is 3

5. is 0.8

6 is 10

Step-by-step explanation:

Good luck!

3 0
3 years ago
ONLY ANSWER IF YK IT ILL GIVE THE CORRECT ANSWER BRAINLIEST
Olin [163]

Answer:

  9 units

Step-by-step explanation:

If you assume the solution is an integer, then you are looking for factors of 27 that differ by 6. You don't have to look far:

  27 = 1×27 = 3×9

If the length is 9 units and the width is 3 units, the width is equal to the length minus 6 units.

The length is 9 units.

_____

<em>Alternate solutions</em>

You can write an equation for the area using L to represent the length. The area is the product of length and width, so is ...

  A = LW

  27 = L(L-6) = L^2 -6L

You can "complete the square" by adding the square of half the L coefficient:

  27 +3^2 = L^2 -6L +3^2

  36 = (L -3)^2 . . . . . simplify a bit

  6 = L -3 . . . . . . . . . positive square root

  9 = L . . . . . . . . . . . . add 3

The length is 9 units.

__

You can also put the quadratic equation into standard form:

  L^2 -6L -27 = 0

To factor this, you're looking for factors of -27 that have a sum of -6. From above, we know these are -9 and +3. So the factorization is ...

  (L -9)(L +3) = 0

The solutions are the values of L that make these factors be zero:

  L -9 = 0   ⇒   L = 9

  L +3 = 0   ⇒   L = -3

Only the positive solution is useful as a measure of length. The length is 9 units.

3 0
3 years ago
A newspaper carrier has $1.80 in change. He has two more quarters than dimes but three times as many nickels as quarters. How ma
Mazyrski [523]
1\ quarter=\$0.25\\1\ dime=\$0.10\\1\ nickel=\$0.05\\\\q\ \ \ \rightarrow\ \ \ the\ number\ of\ the\ quarters\\d\ \ \ \rightarrow\ \ \ the\ number\ of\ the\ dimes\\n\ \ \ \rightarrow\ \ \ the\ number\ of\ the\ nickels\\\\q=2d\ \ \ and\ \ \ n=3q\ \ \ \Rightarrow\ \ \ n=3\cdot 2d=6d\\\\q\cdot0.25+d\cdot0.10+n\cdot 0.03=1.80\\\\2d\cdot0.25+d\cdot0.1+6d\cdot0.05=1.8\\\\

0.5d+0.1d+0.3d=1.8\\\\0.9d=1.8\ \ \ \Rightarrow\ \ \ d=2\ \ \ \Rightarrow\ \ \ q=2\cdot2=4\ \ \ and\ \ \ n=6\cdot2=12\\\\Ans.\ 4\ quarters,\ 2\ dimes,\ 12\ nickels

3 0
3 years ago
A scientist estimates that there are about 10^24 stars in the universe and that each galaxy has,
chubhunter [2.5K]

Answer:

100'000'000'000'000

(trillion gaxies in the universe)

Step-by-step explanation:

10×10^10= 10(10'000'000'000)=100'000'000'000

(hundred billion stars in milky way)

100'000'000'000'000'000'000'000 (hundred sextillion stars in universe)

100'000'000'000'000'000'000'000 / 100'000'000'000= 100'000'000'000'000

(trillion gaxies in the universe)

4 0
3 years ago
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