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3 years ago

Choose the best definition for the term: variable

Mathematics

1 answer:

Whitepunk [10]3 years ago

3 0

A: a letter that holds the place for some unknown value in mathematics

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A+b : [(4+5i) + (1+5i)] . (1+i) =a+bi

r-ruslan [8.4K]

F4534545566(6)66767788

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3 years ago

Please help!!! Look at picture

Vanyuwa [196]

Answer: 1: Given

2: Distribution

3: Subtraction

4: subtraction

5:division

Step-by-step explanation:

6 0

3 years ago

HELPPP

alina1380 [7]

Ok, So:

10x3=30-3=27

It Would Be 27

6 0

3 years ago

Read 2 more answers

The four digit numeral 3AA1 is divisible by 9. What digit does A represent

dexar [7]

Answer:

A = 2, the number is 3221

Step-by-step explanation:

In order for the number to be divisible by 9, the sum of it's digit has to be divisible by 9.

In our case, $4+A+A+1= 9k$ where k is an integer. the easiest way happens when k=1

$5+2A= 9 \rightarrow 2A=4 \rightarrow A = 2$

Higher values of k will likely most work (with k=2 you get A to be a non-integer, which can't work since it's the digit of a number, and with higher values of K you're not getting a number in base 10.

4 0

2 years ago

Keri is simplifying 5·10^−3.

11111nata11111 [884]

Answer:

1. D

2. A

Step-by-step explanation:

Q1. Kerry is simplifying $5\cdot 10^{-3}$

By the definition of negative powers,

$a^{-n}=\dfrac{1}{a^n}$

Hence,

$10^{-3}=\dfrac{1}{10^3}$

So, the first step in simplifying the expression is

$5\cdot 10^{-3}=5\cdot \dfrac{1}{10^3}$

Q2. Given the expression

$\dfrac{8}{10^{-2}}$

First, use the definition of negative powers:

$10^{-2}=\dfrac{1}{10^2}$

Thus,

$\dfrac{8}{10^-2}=\dfrac{8}{\frac{1}{10^2}}=8\cdot 10^2=8\cdot 100=800$

8 0

3 years ago