All categories

3 years ago

What is -3(2x-3y-5) simplified ?

Mathematics

2 answers:

professor190 [17]3 years ago

8 0

Use the distributive property of multiplication to simplify.
-6x + 9y + 15.

myrzilka [38]3 years ago

6 0

Answer:

-6x+9y+15

Step-by-step explanation:

use distributive property to multy the -3 by all the numbers in the perenthesis

You might be interested in

Help in this question!!

stepladder [879]

answer

Yes

Step-by-step explanation:

17.23 - 18.03

=1.77

7 0

3 years ago

A right triangle has a height of 27 inches and a base of 30 inches what is the area of the triangle

klasskru [66]

Answer:

The answer is 405

Step-by-step explanation:

FIrst you would do 27 times 30 which is 810 then you would divided by 2 which in turn gives you 405

Hope this helped!

7 0

3 years ago

A bad contains two red marbles, six blue marbles and seven green marbles. If two marbles are drawn out of the bag, what is the p

Luba_88 [7]

Answer:

1/105

Step-by-step explanation:

Total Marbles= 2+6+7=15

2/15 * 1/14 = 2/210 = 1/105

(It becomes 1/14 since you take out own red marble)

8 0

2 years ago

What does non-proportional and proportional

Andrews [41]

Answer: i don’t understand the question... are you asking what eacg of them mean?

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

DEF is a right angled triangle calculate the length of EF correct to 3 sigificant figures

Vesnalui [34]

Answer:

$\displaystyle EF \approx 15.9$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] cosθ = adjacent over hypotenuse

Step-by-step explanation:

Step 1: Define

Angle θ = 28°

Adjacent Leg = EF = x

Hypotenuse = DF = 18

Step 2: Solve for x

Substitute in variables [Cosine]: $\displaystyle cos28^\circ = \frac{x}{18}$
[Multiplication Property of Equality] Multiply 18 on both sides: $\displaystyle 18cos28^\circ = x$
Evaluate trig: $\displaystyle 18(0.882948) = x$
Multiply: $\displaystyle 15.8931 = x$
Rewrite: $\displaystyle EF = 15.8931$
Round: $\displaystyle EF \approx 15.9$

8 0

3 years ago