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2 years ago

Which expression best represents the difference between triple a number and double a number?

1 answer:

3 0

<span>Which expression best represents the difference between triple a number and double a number?
the answer is </span>3x-2x

You might be interested in

Evaluate –3ab when a = –2 and b = –5.

UNO [17]

Simple.....

you have:

-3ab--->> a=-2 b=-5

Or-->>

-3(-2)(-5)

Simplify....

-3(10)

-30

Thus, your answer.

5 0

3 years ago

ATM personal identification number (PIN) codes typically consist of four-digit sequences of numbers. Find the probability that i

oksian1 [2.3K]

Answer:

(a) 0.0001 or 0.01%

(b) 0.01 or 1%

Step-by-step explanation:

Since there are 10 possible numeric digits (from 0 to 9), and there is only one correct digit, there is a 1 in 10 change of getting each digit right.

The probability that if you forget your PIN, then you can guess the correct sequence

(a) at random:

$P=(\frac{1}{10})^4=0.0001=0.01\%$

(b) when you recall the first two digits.

$P=(\frac{1}{10})^2=0.01=1\%$

7 0

2 years ago

What is the multiplicative inverse of −3/5?

bonufazy [111]

Answer:

The multiplicative inverse is -5/3

Step-by-step explanation:

Multiplicative inverse means we want to end up with 1

-3/5 * what =1

Multiply by 5 to clear the fraction

-3/5 * what *5 = 1*5

-3 * what = 5

Divide by -3 to isolate what

-3*what /-3 = 5/-3

what = -5/3

The multiplicative inverse is -5/3

4 0

3 years ago

Which of the following is equivalent to the quadratic equation below after completing the square?

Natalka [10]

X^2 + 4x = 0
x^2 + 4x + 4 = 0 + 4
(x + 2)^2 = 4

3 0

3 years ago

What is the area of triangle PQR? Round to the nearest tenth of a square unit.

larisa86 [58]

ANSWER

111.3 square units.

EXPLANATION

The formula for calculating the area of a triangle is.

$Area = \frac{1}{2} \times base \times height$
Let us the side of the triangle with side 12 units to be the base of the triangle.

Then the height of the triangle can be determined from the diagram using trigonometry.

$\sin(68 \degree) = \frac{height}{20 }$

$height = 20 \sin(68 \degree)$

$height = 18.54$

We now plug in the values in to the formula to obtain,

$Area = \frac{1}{2} \times 12 \times 18.54$

$Area = 111.3 \: square \: units$

See graph

7 0

2 years ago

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