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3 years ago

Which expression is equivalent to 6x2 – 19x – 55?

Mathematics

2 answers:

goblinko [34]3 years ago

7 0

So the right answer is of option D.

Look at the attached picture

Hope it will help you

Good luck on your assignment

belka [17]3 years ago

6 0

Answer:

(6x + 11)(x – 5)

Step-by-step explanation:

It's D on edg

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4 years ago

Please help as well: Solve for X

hram777 [196]

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Step-by-step explanation:

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3 years ago

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A pharmacist has 80 milileters of a 25 percent saline solution. Which expression can be used to find the percentage of the conce

Thepotemich [5.8K]

Answer:

Step-by-step explanation:

Final concentration % = [grams of salt / mililiters of solution] * 100

grams of salt = grams of salt from solution 1 + grams of salt from solution 2

grams of salt from solution 1 = mililiters * %/100 = 80 mililiters * 0.25 g/mililiters = 20 g

grams of salt from solution 2 = mililiters *%/100 = x*0.10 g/mililiters = 0.1x

mililiters of final solution = mililiters from solution 1 + mililiters from solution 2

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=> Final concentration, % = [0,10x + 20 g] / [x + 80 mililiters] * 100

6 0

3 years ago

What is the distance between the points (2, 1) and(6, 7)?

icang [17]

Answer:

$\displaystyle d = 2\sqrt{13}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)

Algebra II

Distance Formula: $\displaystyle d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Step-by-step explanation:

Step 1: Define

Identify

Point (2, 1)

Point (6, 7)

Step 2: Find distance d

Simply plug in the 2 coordinates into the distance formula to find distance d

Substitute in points [Distance Formula]: $\displaystyle d = \sqrt{(6 - 2)^2 + (7 - 1)^2}$
[√Radical] (Parenthesis) Subtract: $\displaystyle d = \sqrt{4^2 + 6^2}$
[√Radical] Evaluate exponents: $\displaystyle d = \sqrt{16 + 36}$
[√Radical] Add: $\displaystyle d = \sqrt{52}$
[√Radical] Simplify: $\displaystyle d = 2\sqrt{13}$

3 0

3 years ago

Write and solve an equation for the situation.

Brrunno [24]

Width is 10 and Length is 18
18-10=8
18+18+10+10= 56

6 0

3 years ago