All categories

3 years ago

Which of these statements about algebra are true?

Mathematics

2 answers:

9966 [12]3 years ago

8 0

Answer:

Algebra uses abstract symbols to represent concrete elements in the real world.
Many great mathematicians were also philosophers.
The same variable can represent two different unknowns in two different algebraic expressions.

Step-by-step explanation:

Novay_Z [31]3 years ago

6 0

Yes, algebra uses abstract symbols to represent concrete elements in the real world.

No, in an algebraic equation, the same variable cannot represent two different unknowns.

Yes, many great mathematicians were also philosophers.

No, An algebraic expression doesn't contains an equal sign, but an algebraic equation does.

No, if the expressions are in the same set. Yes, if they are not. (The same variable can represent two different unknowns in two different algebraic expressions.)

You might be interested in

which equation would help you solve this problem? there are 18 muffins on a plate. if they are split equally among 9 people, how

cluponka [151]

They would each get 1 muffin ( 18/9=2)

3 0

2 years ago

John is driving at a constant speed of 40 miles per hour. How long does it take him to travel 50 miles?

asambeis [7]

Answer:

1 hour and 15 minutes

1.25 hr.

Step-by-step explanation:

40 miles ⇒ 1 hr.

50 miles ⇒ total hours

$\frac{50}{40}$ = 1.25 hours

7 0

3 years ago

Read 2 more answers

Solve<br>4(2x - 3) = 6x + 2

vaieri [72.5K]

｡☆✼★ ━━━━━━━━━━━━━━ ☾

4(2x - 3) = 6x + 2

Expand it:

8x - 12 = 6x + 2

+ 12 to both sides

8x = 6x + 14

- 6x from both sides

2x = 14

Divide both sides by 2:

x = 7

Have A Nice Day ❤

Stay Brainly! ヅ

- Ally ✧

｡☆✼★ ━━━━━━━━━━━━━━ ☾

4 0

2 years ago

The mean annual income for adult women in one city is $28,520 and the standard deviation of the incomes is $5600. The distributi

pshichka [43]

Answer:

$E(\bar{x}) = 28520$

Standard error of mean = 689

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $28,520

Standard Deviation, σ = $5600

Mean of sampling distribution =

$E(\bar{x}) = \mu = 28520$

As per Central Limit Theorem, if the sample size is large enough, then the sampling distribution of the sample means follow approximately a normal distribution.

Sample size, n = 66

Since the sample size is large, we can use normal distribution for approximation.

Standard error of mean =

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{5600}{\sqrt{66}} = 689.31 \approx 689$

7 0

2 years ago

Write the ratio as a fraction in simplest form 35 girls: 15 boys

nika2105 [10]

Answer:

7:3

Step-by-step explanation:

think of it as a fraction

6 0

2 years ago