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3 years ago

a three and a half gallon gas can contains nine tenths of a gallon how much more gas can be poured in

Mathematics

1 answer:

vovangra [49]3 years ago

6 0

The answer in simplest form would be 2 and 3 fifths gallons of gas.

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Please help . Really need done . Thank you . Will mark Brainly .

Gekata [30.6K]

Answer:

(5,2)

Step-by-step explanation:

Answer (5,2)

N(2)

W E(5)

8 0

3 years ago

Suppose you are taking a multiple choice exam with 61 questions, each with 4 possible answers. If you were to guess at random fo

Brut [27]

Answer:

15.25

Step-by-step explanation:

The probability of getting a question right is 1/4 because there are 4 possible answers, and you're just guessing randomly.

You can expect to get 1/4 of the questions right.

$\frac{1}{4}\times 61 =15.25$

7 0

3 years ago

Which equation represents the hyperbola in general form?

valina [46]

ANSWER

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

EXPLANATION

The standard equation of the hyperbola is

$\frac{ {(y - 2)}^{2} }{4} - \frac{ {(x - 2)}^{2} }{9} = 1$

We multiply through by 36 to obtain:

$9 {(y - 2)}^{2} - 4( {x - 2)}^{2} = 36$

We now expand to get,

$9( {y}^{2} - 4y + 4) - 4( {x}^{2} - 4x + 4) = 36$

Expand :

$9 {y}^{2} - 36y + 36 - 4 {x}^{2} + 16x - 16 = 36$

To get the general form, we equate everything to zero to get,

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

The correct choice is D.

7 0

3 years ago

17<br> Write<br> percentage.<br> 20

enot [183]

Answer:

$\large \boxed{85\%}$

Step-by-step explanation:

17/20

Multiply by the conjugate 5/5.

(17 × 5)/(20 × 5)

85/100

Apply rule : a/100 = a%

85/100 = 85%

5 0

3 years ago

A scientist has two solutions, which she has labeled Solution A and Solution Each contains salt. She knows that Solution A is 40

Alexxandr [17]

Answer:

Step-by-step explanation:

Let the number of ounces of

A = x

B = y

A scientist has two solutions, which she has labeled Solution A and Solution Each contains salt. She knows that Solution A is 40% salt and Solution B is 55% salt. She wants to obtain 90 ounces of a mixture that is 45% salt. How many ounces of each solution should she use?

Our system of equations is given as

x + y = 90.... Equation 1

x = 90 - y

40% × x + 55% × y = 45% × 90 ounces

0.4x + 0.55y = 40.5....Equation 2

We substitute 90 - y for x in Equation 2

6 0

3 years ago