1.) Simplify the expression by combining like
terms: a + 2a - 3a.



Answers

Answer 1

Answer: 0

Step-by-step explanation:

We can start by factoring out an a from all 3 terms:

= a (1 + 2 - 3)

We can evaluate 1 + 2 - 3 as 0:

= a(0)

Anything multiplied by 0 is 0, therefore 0a = 0.


Related Questions

help asap
The graph is
A. neither even nor odd
B. symmetric about the y-axis
C. even
D. odd

Answers

Answer:

even

Step-by-step explanation:

bc it is the same on both sides

An angle measures 66.4º more than the measure of its complementary angle. What is the
measure of each angle?
o and
o

Answers

Answer: 11.8 degrees and 78.2 degrees

Step-by-step explanation:

If you start with $160 and save $125 per month, how many months will it take for you to save a total of
$660?

This is a solving equation word problem

Answers

Answer:

4 weeks

Step-by-step explanation:

660-160=500

500/125= 4 weeks

Which equation represents the function on the graph?

Answers

Answer:

The equation represents the function on the graph will be  Sin 2x

Given : Graph in diagram.

According to the given trigonometry function shape either of sine or cosine.

Here, it is intersecting at the origin it is likely a sine graph. A normal sine graph starts at Origin, crests out at 1 , and it crosses back down at the x-axis at (3.14, 0).

We knows this graph starts at origin and crosses back again at half that value. This graph is horizontally compressed on multiplying of a number maximum than 1.

Therefore, this graph is Sin 2x.

Learn more about Sine Functions here:brainly.com/question/17056821

Step-by-step explanation:

welcome

Everyday Fitness charges a $28 dollar membership fee plus $2 per visit. Fitness King charges $16 membership fee plus $4 per visit. For how many visits will the total cost for both companies be the same? What will the amount be?

Answers

Answer:

The total cost of the companies will be the same after 6 visits. The cost will be $40 after 6 visits

Step-by-step explanation:

A store sold 6 3/8 boxes
of Milky Way bars and 7 2/5
boxes of Snickers one
week. In total, how many
boxes of candy bars did
they sell?

Answers

Answer:

We add the two fractions:

6 3/8 + 7 2/5 = 13 31/40 boxes of candy bars.

Answer:

Add the two fractions 6 3/8 + 7 2/5 = 13 31/40

Step-by-step explanation:

First multiply the whole numbers by the denominator then add it to the numerator, then find the most common factor (in the denominators) which is 40 (8x5 and 5x8) and multiply the numerator by the same number as the denominator, you will get 255/40 and 296/40 add them then simplify then you will get 13 31/40, thank you.

help me please i appreciate everyone who is helping

Answers

Answer:

m=21

Step-by-step explanation:

Each side has the same length.

63/3=21

im fialing so please help me progress reports are friday

Answers

Answer:

6

Step-by-step explanation:

B reflected across the x-axis would be (-3, 1), so C is (-3, 1)

the distance between B and C is 6

Let me know if this helped

Answer:

4 points

Step-by-step explanation: One: there are two points in between B and c Two: it is skip counting in by two's so you should do the same when calculating the distance.

Hope this helped!

Pls help. Look at the pic and choose the correct statement.

Answers

Answer:

  (b)  The result of adding two polynomials is always a polynomial.

Step-by-step explanation:

A set is "closed" under a particular operation if performing that operation on members of the set always results in a member of the set.

Adding two polynomials always results in a polynomial, so we can say "polynomials are closed under addition."

Find the value of f (x)

F(x) = 2 x f(4) = .........

A. 8
B. -6
C. 10

Answers

Answer:

F(4)=8

Step-by-step explanation:

F(x)=2(x)

F(4)

Replace x with 4

F(4)=2(4)

Multiply

F(4)=8

HELP FOR BRAINLEST!!! PLEASE

Answers

Answer:

3/14

Step-by-step explanation:

Put the number of students that want to be a therapist AND have a fear of height (this would be 3) over the TOTAL amount of students in the sample, in this case it's 14.

so it's 3/14 and it doesn't simplify

you're welcome

Answer:

21%

Step-by-step explanation:

First we need to find the total amount of people that did the personality test. We can do that by adding all the numbers in the table

[tex]4+5+2+3=14\\[/tex]

now, to find the percentage of students that want to be a therapist and a fear of heights, we simply divide the number of students who fit that demographic by the total number of students

[tex]3/14= 0.214[/tex]

therefore, there is a 21% chance of picking a student in that demographic at random

Judy bought 20 apples at the store, and the total weight was 2 kilograms. If the apples all had about the same weight, how much did each apple weigh?

Answers

it would be 0.1 kilograms per apple

plez help with this im confuzzled 10 points

Answers

Answer:

y = 7

x=3

z=3

Step-by-step explanation:

we have, 5y +5=40

5y = 40 - 5

5y=35

y= 35/5

x=7

and, x + 10 = 13

x=13-10

x=3

10z-3 = 27

10z = 27 +3

10z = 30

z= 30/10

z = 3

please mark me brainliest

5 Gavin also bought a dozen flowers for his mother, but her favorite flowers cost $0.35
each. How much did Gavin spend? Show your thinking.

Answers

Answer:

$34.29, Gavin spent $34.29.

Step-by-step explanation:

12 ÷ 0.35 = 34.2857142857

Round to nearest hundreth: 34.29

Answer:

$4.20

Step-by-step explanation:

dozen = 12 flowers

0.35x12=4.20

Dr. Matthews is a professor of physics at the local university. He keeps a record of the number of students attending his class every day. Which of the following is a statistical question that Dr. Matthews can be asked? A.
How many male students attended your class today?
B.
How many students attended your class today?
C.
How many students have enrolled for your class this semester?
D.
How many students attend your class each day?

Answers

Answer:

d.How many students attend your class each day?

Dr Matthews can be asked How many students attend your class each day?

What are statistics?

The practise or science of organising and interpreting numerical data in big quantities, particularly for the objective of concluding proportions in a whole from those in an expected sample.

Dr Matthews can be asked How many students attend your class each day?

To know more about statistics follow

brainly.com/question/15525560

#SPJ2

Sean and Glen share a 16 ounce box of cereal. By the end of the week, Sean has eaten 5/8 of the box,glen has eaten 1/4 of the box of cereal. How many ounces are left in the box?

Answers

Answer:

2 ounces are left

Step-by-step explanation:

Sean =

[tex] \frac{5}{8} \times 16[/tex]

= 10 ounces

Gien =

[tex] \frac{1}{4} \times 16[/tex]

= 4 ounces

Sean + gien = 10 + 4 = 14 ounces

so therefore the remaining portion

= 16 - 14 = 2 ounces of cereal is left

if this helped pls give brainliest

What is the geometric mean of 7 and 11?

Answers

Def. of Geometric Mean: the nth root of the product of n numbers

The geometric mean of 7 and 11 =  [tex]\sqrt{7*11} =8.775\\[/tex] (approximated)

Hope that helped!

Answer: it is the square root of 77 or D in the case of this quiz

Step-by-step explanation: got 100% on the test

the average boa constrictor is about 7 1/2 feet long. How many inches is that?

Answers

Answer :90
Because there is 12 inches in 1 foot, 12 times 7 is 84 then, then 1/2 of a foot is 6 inches, so then you add 84 plus 6 witch equals 90.
it would be 90 inches

find the circumference of the circle 56.52 inches, 64.59 inches, 254.34 inches, 28.26 inches, 14.13

Answers

Answer:56.57in

Step-by-step explanation:

Evaluate \sqrt{-72k} −72k square root of, minus, 72, k, end square root where k = -2k=−2k, equals, minus, 2

Answers

Answer:

  12

Step-by-step explanation:

To evaluate the given expression for the given value of k, put that value into the expression in place of k, then do the arithmetic.

  [tex]\sqrt{-72k}\qquad\text{for $k=-2$}\\\\\sqrt{(-72)(-2)}=\sqrt{144}=12\qquad\text{positive square root}[/tex]

The value is 12.

Answer:

12

Step-by-step explanation:

trust me

How is ordering factions on a number line similar and different from ordering whole numbers on a number line

Answers

Answer:

Fractions and whole numbers ordered on the number line are similar because it tells parts throughout the line, like skip counting using adding or subtraction for example.

What's different from them is because the fractions tell the parts more detailed between the whole numbers, such as 2 3/4 as a fraction on the number line. And 3 as a whole number on the number line.

Step-by-step explanation:

Henry took 24.7 minutes to complete an exam. Laticia took 16.7 minutes to
complete the same exam. Who completed the exam first, Henry or Laticia?
A. Henry
B. Laticia
HELP PLS!!!

Answers

Laticia completed the exam first

Henry took=24.7mimLaticia took=16.7min

As

24.7>16.7

Laticia completed first

GIVING POINTS!! will give brainliest

Answers

Answer:

-7 and -5

AND

-3 and -1

Step-by-step explanation:

If the length of a rectangle doubles its width. Find the length of the rectangle if the perimeter is 21cm

Answers

Answer:

7cm, assuming the question is phrased as noted below.

Step-by-step explanation:

I'll interpret "If the length of a rectangle doubles its width." as "If the length of a rectangle is double its width.

Let L be the width, and L the length

L = 2W

The perimeter of a rectangle is 2L + 2W

We can use L instead of 2W,  and that gives us:

  21 cm = 2L + L

21 cm = 3L

L = 7 cm

will give brainliest to right answer

Answers

Step-by-step explanation:

again, in a geometric sequence all terms are created by multiplying the previous term by a constant factor.

7640 × f = 764

f = 764/7640 = 1/10

a1 = 7640

a2 = a1 × 1/10 = 7640 × 1/10 = 764

a3 = a2 × 1/10 = a1 × 1/10 × 1/10 = 7640 × 1/100 = 76.4

an = 7640 × (1/10)^(n-1)

a6 = 7640 × (1/10)⁵ = 7640 × 1/100000 = 0.0764

how do I evaluate this?

log of 0.001, base 10 equals x

Answers

Answer:

-3

Step-by-step explanation:

[tex]log_{n} n^{a} =a\\[/tex]

[tex]0.001 = 10^{-3}[/tex]

[tex]log_{10} 0.001=log_{10} 10^{-3} =-3[/tex]

HOW DO I SOLVE THIS PLEASE HELP

Answers

Answer:

18 units

Step-by-step explanation:

Use the property of 45°x45°x90° and 30°x60°x90° right triangles.

Ratio of sides:

45°x45°x90° triangle 1 : 1 : √230°x60°x90° triangle 1 : √3 : 2

Find the longer leg of the second triangle:

6√6*√3 = 6√18 = 6*3√2 = 18√2

Find the value of x, of the first triangle:

x = 18√2/√2 = 18

Expression that is equivalent to (6)(6)(6)

Answers

Answer:

36×6

Step-by-step explanation:

(6)(6)(6)

6×6×6

36×6

216

The answer is:  " 6³ " .

__________

Step-by-step explanation:

Note:  " (6)(6)(6) " ;  is the value of the  

[number "6" ; multiplied by that same number, "6" —two additional times;

   → so the same number, "6" ;  being multiplied:  "3 (three) times'

                 =  6 * 6 * 6  =  6³  ;  that is:  the number "6", raised to the third power (as an exponent);

    →  since: there are 3 (three) of the same numbers being multiplied;

            hence the exponent, "3" .
__________

The answer is:  " 6³ " .
 __________
Hope this helps!

if secx+cosecy = 2, and sinx+cosy=k evaluate 3k/4.

Need help ASAP!

Answers

The equations secx+cosecy = 2, and sinx+cosy=k are trigonometry equations

The result of [tex]\frac {3k}4[/tex] is [tex]\frac{3\sin(y)\cos(x)\sin(x) + 3\sin(y)\cos(x)\cos(y)}{2[\cos(x) + \sin(y)]}[/tex]

How to evaluate 3k/4

The equations are given as:

secx+cosecy = 2, and sinx+cosy=k

Divide both equations

[tex]\frac{\sin(x) + \cos(y)}{\sec(x) + \csc(y)} = \frac k2[/tex]

Divide through by 2

[tex]\frac{\sin(x) + \cos(y)}{2[\sec(x) + \csc(y)]} = \frac k4[/tex]

Express sec and cosec as inverse ratios

[tex]\frac{\sin(x) + \cos(y)}{2[1/\cos(x) + 1/\sin(y)]} = \frac k4[/tex]

Take the LCM

[tex]\frac{\sin(y)\cos(x)[\sin(x) + \cos(y)]}{2[\cos(x) + \sin(y)]} = \frac k4[/tex]

Expand

[tex]\frac{\sin(y)\cos(x)\sin(x) + \sin(y)\cos(x)\cos(y)}{2[\cos(x) + \sin(y)]} = \frac k4[/tex]

Multiply through by 3

[tex]\frac{3\sin(y)\cos(x)\sin(x) + 3\sin(y)\cos(x)\cos(y)}{2[\cos(x) + \sin(y)]} = \frac {3k}4[/tex]

Rewrite as:

[tex]\frac {3k}4 =\frac{3\sin(y)\cos(x)\sin(x) + 3\sin(y)\cos(x)\cos(y)}{2[\cos(x) + \sin(y)]}[/tex]

Hence, the result of [tex]\frac {3k}4[/tex] is [tex]\frac{3\sin(y)\cos(x)\sin(x) + 3\sin(y)\cos(x)\cos(y)}{2[\cos(x) + \sin(y)]}[/tex]

Read more about trigonometry equations at:

https://brainly.com/question/8120556

An ammonia and water mixture fills a five-gallon container. Eighty percent of the mixture is ammonia but some of the mixture will be drained and replaced with pure water. If a five-gallon mixture of fifty percent ammonia is desired, how many quarts of the mixture need to be drained before the water is added

Answers

Answer:

The volume of the 80% ammonia that is to be drained before water is added is 7.5 quartz

Step-by-step explanation:

The volume of the ammonia and water mixture = 5 gallons

The percentage of ammonia in the mixture = 80%

The volume of ammonia desired = 5 gallons

The percentage concentration of ammonia desired = 50%

The diluting solution = Pure water

The measure of 4 quarts = 1 gallon

Therefore, we have, by equivalence solutions;

80% × x gallon = 50% × 5 gallons

x gallon = 50% × 5 gallons/(80%) = 3.125 gallons

x = 3.125 gallons

The volume of the 80% ammonia that is to be drained = 5 gallons - 3.125 gallons = 1.875 gallons

4 quarts = 1 gallon

1 gallon = 4 quarts

∴ 1.875 gallons = 4 × 1.875 quartz = 7.5 quartz

The volume of the 80% ammonia that is to be drained before water is added = 7.5 quartz

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