Mathematics High School

What property was used on 14k + 2(3k + 5) − 5 = 10 to obtain
14k + 6k + 10 − 5 = 10?

Answers

Answer 1

Answer: Distributive property.

Step-by-step explanation:

Answer 2

Answer:

Distributive property.

In this case, 2 is being distributed to 3k and 5 to get 6k and 10.

Related Questions

Find the Value
A.
B.
C.
D.

Answers

Answer:

C

Step-by-step explanation:

Using the trig. identity

sin²x + cos²x = 1 ⇒ cosx = ± [tex]\sqrt{1-sin^2x}[/tex]

Here sinθ = [tex]\frac{1}{2}[/tex] , thus

cosθ = ± [tex]\sqrt{1-(\frac{1}{2})^2 }[/tex] = ± [tex]\sqrt{1-\frac{1}{4} }[/tex] = ± [tex]\sqrt{\frac{3}{4} }[/tex] = ± [tex]\frac{\sqrt{3} }{2}[/tex]

Since 0 ≤ θ > 90 then cosθ > 0 , thus

cosθ = [tex]\frac{\sqrt{3} }{2}[/tex] → C

The first term in an arithmetic sequence is 5. The third term in the sequence is -1. The tenth term in the sequence is -22.

Answers

Answer:

             [tex]\bold {a_n=-3n+8}[/tex]

Step-by-step explanation:

[tex]a_n=a_1+d(n-1)\\\\a_3=5+d(3-1)\\\\-1=5+2d\\\\-6=2d\\\\d=-\frac62=-3\\\\\\a_n=5+(-3)(n-1)\\\\a_n=5-3n+3\\\\a_n=-3n+8[/tex]

Check:    [tex]a_{10}=-3(10)+8=-30+8=-22[/tex]

Geometry hw! Pls help! If g || h and m<2=88, what is m<3?

Answers

C. Because 88+92=180 I believe

What’s 2/3x1 1/7x3/8 thank you

Answers

Answer:

2/7

Step-by-step explanation:

1. 2x8/7x1/8

2. 2x1/7

3. 2/7

Can someone help me with this?

Answers

Answer:

(X+4,y-2)

Step-by-step explanation:

ll and mmm are parallel to each other. whats the answer to x

Answers

Answer:

   

Step-by-step explanation:

                   

Lmn is a right angle?

Answers

Answer:

no

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

The manager of a grocery store determined that the number of bananas remaining on the shelves at her store can be determined by the function b(n) = 150 − 6 n, where n is the number of hours since the store opened. According to this function, how many bananas are left on the shelves after the store has been open for 6 hours?

Answers

114 bananas

b(6)= 150-6(6)
—->150-36
= 114

Solve the two steps equations below and check your solution R/2-8=16

Answers

Answer:

r= 48

Step-by-step explanation

r/2 - 8 = 16

     +8     +8

r/2 = 24

multiply both sides by two so it cancels out and you get r by itself.

the 2 cancels out and 24 times 2 = 48

r= 48

Which is the solution to the following system x+2y+z=9
X-y+3z=13
2z=10

Answers

Step-by-step explanation:

I'm not sure but,here you go

2z = 10

z = 10 ÷ 2 = 5

x + 2y + z = 9

x + y + 3z = 13

____________

x + 2y + 5 = 9

x + y + 3(5) = 13

_____________

x + 2y = 9 - 5

x + y = 13 - 15

___________

x + 2y = 4

x + y = -2 (×-1)

___________

x + 2y = 4

-x - y = 2

___________

y = 6

x = -2y - z + 9 = -2(6) - 5 + 9 = -12 - 5 + 9 = -8

If you wanna check,

x + y +3z = 13

(-8) + 6 + 3(5) = 13

x = -8 , y = 6 , z = 5

I'm not very sure but here you go,I might be wrong^^

2z = 10
/2 on both sides
z = 5
———————
x + 2y + z = 9
x + 2y + 5 = 9
-5 on both sides
x + 2y = 4
———————
x - y + 3z = 13
x - y + 3(5) = 13
x - y + 15 = 13
-15 on both sides
x - y = -2
———————
x + 2y = 4
x - y = -2

x + 2y = 4
- (x - y = -2)

x + 2y = 4
-x + y = 2
Add the equation together
3y = 6
/3 on both sides
y = 3
———————
Substitute z = 5 and y = 3 in one of the equations that includes all of the variables
x + 2y + z = 9
x + 2(3) + 5 = 9
x + 6 + 5 = 9
x + 11 = 9
-11 on both sides
x = -2
———————

Answers:
x = -2
y = 3
z = 5

Please help me with this question!

Answers

Coordinates

-18 + 19½ = 1½?

37½

Step-by-step explanation:

(18 × 2) + 1½ = 37½

after 3 hours, a bacteria colony has (25^3)^3 bacteria present. How many bacteria are in the colony

Answers

Answer:

25^9

Step-by-step explanation:

(25^3)^3 = 25^(3 * 3) = 25^9

3.2 divided by 64 long division rounded to the nearest tenth I will give you ten points if you give me the right answer
...

Answers

Answer:

if its 64/3.2= 20 its or if its 3.2/64 its= .1

Step-by-step explanation:

3х + 12 = 15 Reason​

Answers

Answer:

I can't understand it because of the way you put it.

Step-by-step explanation:

.

Help!?! Please 3 3/4 - 7/8= what!!

Answers

Answer:

2 7/8

Step-by-step explanation:

Answer:

2 7/8

Step-by-step explanation:


An engineering student answered 81 questions correctly on a 90-question test. What percent of the questions did she answer
incorrectly?

Answers

Answer:

90% of the question answered correct

10% were incorrect

Step-by-step explanation:

List the coefficients from the following expression
3x + 6 - 8x + 1

Answers

Answer:

3 and 8

Step-by-step explanation:

Coefficients are just the numbers that accompany the variables. So if you have any number, let's take 4, and put it next to an x: 4x, 4 will be your coefficient.

3 and 8 a coefficient is a number INFRONT of a variable

The graph that is made up of two straight lines, which has an absolute maximum or absolute minimum, and is symmetric belongs to the
function family.

Answers

Answer:

This may be a function of the absolte value family.

f(x) = IxI.

f(x) = x if x ≥ 0

f(x) = -x  if x ≤ 0

Where this is the parent function, and the graph is shown below in green.

If the coefficient is positive, then the lines open upwards, and we will have a minimum (in this case, when x = 0).

And also in this case, we have symmetry around the value x = 0.

Now, the vertex can also be an absolute maximum if the coefficient is negative, like in the example shown below in color blue (the equation for the blue graph is f(x) = -3*IxI )

4. Describe the following graph completely
a. Where is the vertex of the parabola?
b. Is there a line of symmetry? If so, draw it in.
c. Are there any x-intercepts? If so, name them. d. Are there any y-intercepts? If so, name them. ​

Answers

a. The vertex is at (2,1) which is the highest point of the parabola. This applies to any parabola where it forms a hill like this. b. The line of symmetry is x = 2. It is the vertical line through the vertex. The line of symmetry cuts the parabola into two equal halves (one half mirrors over the line to get the other half).c. The x intercepts are x = 1 and x = 3, which is where the parabola crosses the x axis. More specifically the locations are (1,0) and (3,0).d. The y intercept is where the graph crosses the vertical y axis. The y intercept is -3, so its location is (0,-3). A function can only have one y intercept.

Chad and his two friends are picking blueberries at a local farm. Chad picked 2 1/2 pounds of blueberries, and one of his friends picked 1 3/8 pounds. If they ended up with a total of 5 1/4 pounds, how many pounds did chad’s other friend pick? Express your answer as a mixed number.

Answers

Answer: 1 3/8

Step-by-step explanation:

Theo bought 2 hot dogs and two drinks for $4.00. At the same concession stand, Vicky bought 3 hot dogs and a drink for $4.50. Write a system of equations and find what is the price of a hot dog concession stand?

Answers

Answer:

The hot dog are $2.63

Step-by-step explanation:

Hot Dogs = H

Drinks = D

2H + 2D = 4

Divide both sides by 2

H + D = 2

Subtract D from either side

H = 2 -D

3H + D = 4.50

Plug in 2 - D for H

3(2- D ) + D = 4.50

6 - 3D + D = 4.50

6 - 4D = 4.50

Add 6 to either side

-4D = 10.50

Divide either side by -4

D = -2 . 625

helpppppppppppppp show with proof please

Answers

1)
( 2.1•10000)+(6.7•100000)=21000+670000=691000

2)(8.3•1000000)-(2•1000000)=8300000+2000000=10300000
But i couldn’t explain third one
Hope this helps

8.91201 rounded to the nearest tenth

Need fast answers !

Answers

Answer:8 9

Step-by-step explanation:

1 is less that 5 therefore the 9 does not change its value

Answer:

8.9

Step-by-step explanation:1 is less then 5 so you round down

PLEASE TRY TO ANSWER THIS FAST

Answers

Answer:

it would be 4.5b - 9 = 1.5(3b-6)

Step-by-step explanation:

just divide 4.5 by 1.5 9 then do the same thing to

(don't forget to thank the skeleton in your closet

Can anybody help me on number 4? Find the measure of each interior angle of the regular polygon.

Answers

Answer:

22.5 degrees

Step-by-step explanation:

there are 8 corners in that polygon and there are 180 degrees inside every polygon

so divide 180 by 8

you should get 22.5 degrees

The equation of the graph line is 2X-3Y=12

What is the x-intercept of the graph?
A. -4
B. -3/2
C.2/3
D.6

Answers

Answer:

A. -4

Step-by-step explanation:

For solving for x intercepts analytically. You can set the the y in the equation to 0. So, 2x-3(0)=12, and solving for x will get you -4.

You can also solve graphically by plugging in the equation and looking at where it intercepts the x axis.

The answer is A.-4 that’s the answer for this question

What is the quotient of -3/7and -1/3? -1 1/8 -1/8 1/8 1 1/8​

Answers

Answer:

1 2/7

Step-by-step explanation:

Quotient means division

-3/7 ÷-1/3

Copy dot flip

-3/7 * -3/1

9/7

7/7 + 2/7

1 2/7

1 .50+35=5(_____+7). 2._______+39=3(3+13) choices for number 2 16,1,5,9 . choices for number 1. 5,10,2,4

Answers

Answer:

1) 10

2) 9

Step-by-step explanation:

50+35=5(10+7) because 5*10=50 and 5*7= 35

9+39=3(3+13) because 3*3=9 and 3*13=39

can you answer it. please

Answers

Answer:

5x + 10 + 55 = 90

5x = 90 -55 - 10

5x = 90 - 65

5x = 25

5x ÷ 5 = 25 ÷ 5

x = 5

Answer:

x=5

Step-by-step explanation:

If you replace the x in (5x+10)º

(5x+10)º

[5(5)+10]º

[25+10]º

= 35º

Combine the sums for angles M and R

55º+35º

=90º

Therefore, the answer is x=5.

Brainliest pls?

For lunch, you get tacos that cost $5.50
$
5
.
50
. You also get chips and salsa for $3.99
$
3
.
99
. What is the total cost of your lunch?

Answers

Answer:

9.49$

Step-By-Step explanation:
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