All categories

3 years ago

A car can travel 120 miles on 4 gallons of gasoline. How much gasoline will it need to go 510 miles?

Mathematics

1 answer:

meriva3 years ago

7 0

Answer:

Step-by-step explanation:

You might be interested in

Evaluate the following expression when x = -5 and y = 25.

kykrilka [37]

Answer:

The correct answer is A. 3,120.

Step-by-step explanation:

Let's solve the expression for x = -5 and y = 25, this way:

(5|x| - y³)/x

Replacing x and y, we have:

(5 * 5 - 25³)/-5 (Absolute value of -5 is 5 in the numerator but we keep it without changes in the denominator)

(25 - 15,625)/-5

-15,600/-5

3,120

The correct answer is A. 3,120.

3 0

3 years ago

Find the distance between (-5,6)and (3,2).

skad [1K]

Answer:

$\displaystyle d = 4\sqrt{5}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)

Algebra II

Distance Formula: $\displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Step-by-step explanation:

Step 1: Define

Point (-5, 6) → x₁ = -5, y₁ = 6

Point (3, 2) → x₂ = 3, y₂ = 2

Step 2: Find distance d

Simply plug in the 2 coordinates into the distance formula to find distance d

Substitute in points [Distance Formulas]: $\displaystyle d = \sqrt{(3+5)^2+(2-6)^2}$
[Distance] [√Radical] (Parenthesis) Add/Subtract: $\displaystyle d = \sqrt{(8)^2+(-4)^2}$
[Distance] [√Radical] Evaluate exponents: $\displaystyle d = \sqrt{64+16}$
[Distance] [√Radical] Add: $\displaystyle d = \sqrt{80}$
[Distance] [√Radical] Simplify: $\displaystyle d = 4\sqrt{5}$

6 0

3 years ago

A and B are two events. Which statement about the conditional probability is true?

nata0808 [166]

The answer
by using fundamental definition
The conditional probability of event B given event A is P(B|A)=P(A and B)/P(A) when two events are not independent.
so the only true answer is A, because P(B|A)=P(A) if A and B are independents
(definition)

4 0

3 years ago

Read 2 more answers

Pls help …. Need it immediately ….

Leno4ka [110]

The answer is 10.73 years.

Here, the formula we can use is :

$\boxed {Children = \frac{Boys+Girls}{2}}$ (for the average)