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4 years ago

Indicate the first step in the universal order of operation

Mathematics

2 answers:

ra1l [238]4 years ago

8 0

Parentheses is the first step

Natali [406]4 years ago

3 0

The universal order of operation is addition, subtraction, multiplication, division, exponentiation, and grouping. One thing to remember these is PEMDAS which is P for please, E for excuse, M is for my, D is for dear, A is for aunt, S is for Sally. PEMDAS actually means parentheses, Exponents, Multiplication, Division, Add, and Subtract.. Hope this helps!

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Two number cubes are rolled. What is the probability that the first lands on 2 and the second one lands on a number greater than

7nadin3 [17]

There are 6 numbers on a cube.

The probability of landing on a certain number would be 1/6.

So for the first one to land on two, would be 1/6.

There are 2 numbers greater than 4, so the probability of that happening would be 2/6 ( reduces to 1/3).

To find the probability of both happening together, multiply each probability by each other:

1/6 x 1/3 = 1/18

7 0

3 years ago

An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r =

avanturin [10]

Answer:

Step-by-step explanation:

We know that the equation for the depreciation of the car is:

$y=A(1-r)^t$

Where y is the current cost, A is the original cost, r is the rate of depreciation, and t is the time, in years.

We are told that the value of the car now is half of what it originally cost. So:

$y=\frac{1}{2}A$

Substitute this for y:

$\frac{1}{2}A=A(1-r)^t$

We also know that the rate of depreciation is 10% or 0.1. Substitute 0.1 for r:

$\frac{1}{2}A=A(1-0.1)^t$

So, let's solve for t. Divide both sides by A:

$\frac{1}{2}=(1-0.1)^t$

Subtract within the parentheses:

$\frac{1}{2}=(0.9)^t$

Take the natural log of both sides:

$\ln(\frac{1}{2})=\ln((0.9)^t})$

Using the properties of logarithms, we can move the t to the front:

$\ln(\frac{1}{2})=t\ln(0.9)$

Divide both sides by ln(0.9):

$t=\frac{\ln(\frac{1}{2})}{\ln(0.9)}$

Use a calculator. So, the car is approximately:

$t\approx6.6\text{ years old}$

Our answer is D.

And we're done!

7 0

3 years ago

SOMEONE please help I’ll give u BRAINLIST

pishuonlain [190]

Answer:

x = 3

Step-by-step explanation:

Because the endpoints of the segment with length 12.5 are the midpoints of the sides of the large trapezoid, the length of that segments, 12.5, is the average of the lengths of the top and bottom lengths of the large trapezoid.

(3x + 1 + 15)/2 = 12.5

Multiply both sides by 2.

3x + 16 = 25

3x = 9

x = 3

3 0

3 years ago

What is the least common denominator for 1/9 and 5/2

schepotkina [342]

Answer: 18

Step-by-step explanation:

1/9 = 2/18

5/2 = 45/18

6 0

2 years ago

Help me pls thxxxxxxxxxx

n200080 [17]

Answer:

brooklyn

Step-by-step explanation:if ur brooklyn do it ur self plese and ty -niki minaj

4 0

3 years ago