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3 years ago

Is (10 – 3) – 2 = 10 – (3 –) correct?

Mathematics

1 answer:

dusya [7]3 years ago

6 0

Answer: No solution

Step-by-step explanation:

(10–3)–2=10–(3–)

10−3−2=10−3, this is false so it is not correct, and the answer for the equation is no solution.

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The speed of light is approximately 6.71 x 108 miles per hour. Express this number in standard form.

noname [10]

10^8=100000000

100000000x6.71=671,000,000

5 0

2 years ago

Lines a and b are parallel and lines e and f are parallel.

ratelena [41]

Answer:

Step-by-step explanation:

shown in the image. hope it helps :)

4 0

2 years ago

Read 2 more answers

Multiple or divide as indicated 2x/4x+2 x 14 x+7/6

otez555 [7]

2x/4x+2 x 14 x+7/6 is unclear. Do you mean 2/4x, or do you mean 2x
-------- ??
4x+2
Use parentheses to make things clearer.

I will assume that you meant to write

2x
--------- * 14x + 7/6
4x + 2

but am very much unsure if this is correct or not.

Perhaps you meant

2x/(4x+2) times 14(x+7/6)

This comes out as follows:

2x * 14 (x + 7/6) 28x(x + 7/6) 14x(x + 7/6)
------------------------ = ------------------- = --------------------
4x+2 2(2x + 1) 2x + 1 after reduction.

Performing the multiplication, we get 14x^2 + 98/6
--------------------
2x+1


It appears that you're using "x" both as a variable name and as the "multiply" operator. If so, please don't! Use " * " to indicate multiplication.

Please take and share a screen shot of this problem.

3 0

3 years ago

1. The cos120" is equal to

Veseljchak [2.6K]

Answer:

Value of Cos 120 is -½.

Step-by-step explanation:

8 0

2 years ago

If a person invests $100 at 4% annual interest, find the approximate value of

tekilochka [14]

Answer:

$140

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Simple Interest Rate Formula: $\displaystyle A = P(1 + rt)$

P is principle amount
r is rate
t is time

Step-by-step explanation:

Step 1: Define

Identify variables

P = 100

r = 4% = 0.04

t = 10

Step 2: Find Interest

Substitute in variables [Simple Interest Rate Formula]: A = 100(1 + 0.04 · 10)
(Parenthesis) Multiply: A = 100(1 + 0.4)
(Parenthesis) Add: A = 100(1.4)
Multiply: A = 140

5 0

3 years ago