All categories

2 years ago

Can someone help me on 20 pls

Mathematics

1 answer:

murzikaleks [220]2 years ago

5 0

Answer:The answer is d.overturning the supreme courts decision in Dred Scott V. Sandford

Step-by-step explanation:

You might be interested in

Last year Mr. Christian‘s class had 30 students .this year the number of students in his class is 150% of the number of students

kow [346]

Answer:

He has 45 kids now.

Step-by-step explanation:

3 0

2 years ago

Which of the following are identities?

podryga [215]

Answer:

A. III only

Step-by-step explanation:

In mathematics, an identity is one of the characteristics of algebraic expressions.

Given variable a and b in an algebraic expression, an identity is defined as an equality that remains the same no matter the values that we choose for either variable a or b.

Identity in mathematics makes it very easy to solve algebraic expressions. The two sides of an identity in an algebra can easily be exchanged for each other.

In the above question, we are given 3 Options.

I) 3(5 + 2x) = 15 + 6x

II) y = x + 3

III) (x² - y²) = (x + y) (x - y)

Option I) 3(5 + 2x) = 15 + 6x

Is showing distributive property in mathematics.

Distributive property is :

a(b + c) = ab + ac

Option I is not an identity , therefore it is wrong.

Option II) y = x + 3 is just an algebraic expression.

Only Option III is an identity. This is because it follows the rule of

(a² - b²) = (a + b) (a - b)

We can prove and confirm this be solving the algebraic expression

(x + y) (x - y)

We expand the bracket

x² - xy +xy - y²

x² - y²

Therefore, option A is the correct option.

6 0

3 years ago

Read 2 more answers

ANY MATH EXPERTS PLS HELP RN I GOT 30 MIN LEFT I'll MARK BRAINLIEST TO WHO ANSWER'S FIRST

garri49 [273]

Answer:

y = -1/4x - 6

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Slope-Intercept Form: y = mx + b

m - slope

b - y-intercept

Step-by-step explanation:

Step 1: Define

Find points from the graph.

Point (-4, -5)

y-intercept (0, -6)

Step 2: Find slope m

Substitute: $m=\frac{-6+5}{0+4}$
Add: $m=\frac{-1}{4}$

Step 3: Write linear function

y = -1/4x - 6

7 0

2 years ago

|2m - 2| > 6 what is the answers

stira [4]

Answer: Theres 2 possible answers

M > 4 and M < -2

Step-by-step explanation:

4 0

3 years ago

Marcus has x songs downloaded on his phone. He downloads 20 more songs to his phone.

Aleks04 [339]

X+20 because x= origanal amount +20 more

6 0

3 years ago