Mathematics High School


When substances go through chemical changes, which of the following will always happen?
OA. One or more substances will be completely destroyed.
OB. Exactly one new substance will form and one will be destroyed.
OC. One or more substances with different chemical properties will form
OD. A gas will form or a white solid will precipitate.

Answers

Answer 1

Answer:

C

Step-by-step explanation:

Answer 2

Answer:

The answer is c

Step-by-step explanation:

Just remember this:

Mass can neither be created or destroyed

Related Questions

3 ÷ 3/4 (3/4 Is a fraction

Answers

Answer:

4

Step-by-step explanation:

I think your answer would be 4:)

Square root 2-x =x-2

Answers

Answer:

The square root of 2-x+x-2 is the square root of x (2-x)

Step-by-step explanation:

you are going to buy pencils and notepads for 3 classes. If there are 12 students in each class, about how many cents in total are you spending

Answers

36 multiple 12 times 3 = 36 and that’s how u get your answer

х
3
10
15
30
у
5
р
1
1
0.5
what is the value of p

Answers

Answer:

p=2

Step-by-step explanation:

х

3

10

15

30

у

5

р

1

1

0.5

what is the value of p=2

Function or not a function?

Answers

Answer:

fuction

Step-by-step explanation:

Help Asap! Find The Measure Of The Missing Angle In The Triangle

Answers

Answer:

50 triangle equals 180

Step-by-step explanation:

The missing angle is 20

Can you help me out here im in the test rn

Answers

Answer:

Type of exercise

Step-by-step explanation:

I pretty sure it’s D

For the function, f(x) = x - 2, find x if f(x) = -1.

Answers

f(x)=x-2=-1
-1=x-2
+2 +2
-1=x

HELP IT'S MATH! WILL GIVE BRAINLIEST TO FIRST AND CORRECT ANSWER!!!!!!

Answers

In my opinion I think is c

Answer:

D

Step-by-step explanation:

because it makes sense75 would be what he deposits in his bank account each month because x is the number of deposits

and 50 would be his birthday money he received

5/6 divide by 1/2 in simplest form

Answers

Answer:

1 2/3

Step-by-step explanation:

To divide fractions you do the Keep Change Flip tactic, meaning keep the first fraction change the operation to multiplication and reverse the second fraction.

So with that being said, 5/6*2/1 would be the equation you need to solve. This would give you 10/6 and you have to change that into a mixed number, 1 4/6 and you can reduce that to SIMPLEST FORM by dividing by 2. 4/2=2 and 6/2=3 so in the end you get 1 2/3.

HOPE THIS HELPS!!!

Add:
2:7 + 2/3
URGET HELP ASAP

Answers

Answer:

4:10

Step-by-step explanation:

No matter what even if fractions are similar to quotiants they aren't the same so if it was fractions this would be a improper fraction but in this case it isn't because they are totally different topics and ranks.

9. Find the zero of (write just the number, If there is no zero, write "none")
f(x) = -16 - 2x

Answers

Answer:

-16

Step-by-step explanation:

y=2x+5
Complete the missing value in the solution to the equation.
(2, )

Answers

Answer:

[tex](2, \: 9)[/tex]

Step-by-step explanation:

[tex]if \: y = 2x + 5 \\ since \: x = 2 \\ y = 2(2) + 5 \\ y = 9. \\ hence \: the \: complete \: point \: is \to \\ \boxed{(2, \: 9) }[/tex]

♨Rage♨

Answer:    (2, 9 )

========================================================

Explanation:

Any point is of the form (x,y). The x coordinate is always listed first.

We're given (2, ___) where the y value is missing in the blank.

So we're given x = 2.

Plug this into the given equation to find y

y = 2x+5

y = 2*2+5 ... replace x with 2

y = 4+5

y = 9

Therefore (2, ___) updates to (2, 9 )

A washing machine is filling up with water at a constant rate. The rate is 3/4 of a gallon in 1/5 of a minute. Don calculated the unit rate to be 3/20 of a gallon per minute. what did he do wrong?​

Answers

Answer: you have to see how many gallons fill the container per minute, so take 3/4 and divide it by 1/5, which gives 15/4. So he multiplied the two numbers instead of dividing.

Step-by-step explanation:

Answer:

[tex]\frac{15}{4}[/tex] gallon per minute

Step-by-step explanation:

Given parameters:

Quantity of gallon = [tex]\frac{3}{4}[/tex] gallon

Time taken  = [tex]\frac{1}{5}[/tex] min

Unknown:

The solution is [tex]\frac{3}{20}[/tex] gallon per minute, what did he do wrong = ?

Solution:

To find the rate:

   Rate  = [tex]\frac{Quantity of gallon}{time }[/tex]

 Input the parameters and solve

  Rate  = [tex]\frac{\frac{3}{4} }{\frac{1}{5} }[/tex]   = [tex]\frac{3}{4}[/tex]  ÷ [tex]\frac{1}{5}[/tex]

                       Invert the [tex]\frac{1}{5}[/tex]  to give 5

                  =  [tex]\frac{3}{4}[/tex] x 5

                  = [tex]\frac{15}{4}[/tex] gallon per minute

The student failed to invert the [tex]\frac{1}{5}[/tex] before multiplying with  [tex]\frac{3}{4}[/tex]

Help? Someone please?!

Answers

Answer:

b, d,

Step-by-step explanation:

The answer is B or d

An online store sells 236 hats per month how many hats are sold in a year

Answers

Answer:

Roughly 2,832 hats sold per year, if their numbers stay the same

Step-by-step explanation:

236*12 :3

Answer:

2832 hats

Step-by-step explanation:

1. You take your two numbers, 236 for the hats and 12 fo the year, and put them into an equation like this 236×12

2. Next you use multiplucation to get 236×12=2832

40 points if any answers first

Answers

Answer:

i think its c

Step-by-step explanation:

Which statement illustrates the distributive property?
O 3(4+5)-3(4)+5
O 3(4+5)= 3(4)+315)
O 3[(4)(5)] = 3(4)+3(5)
O 3[(4)(6)] = [3(4)][3(5)]​

Answers

Answer: it is B

Step-by-step explanation:

:) please tell me if I am wrong

Answer:

It is C

Step-by-step explanation:

i had this question on my test

john had been saving quarters and dimes to buy a new toy. he had 103 coins and saved $21.40 . how many quarters did he save?

quarters=0.25
dimes=0.10

Answers

Answer:

84

Step-by-step explanation:

if you divide 21 by .25 you will get 84

What is the property of 7 x 1 = 7?

Answers

Answer:

7 × 1 = 7 7 \times 1 = 7 7×1=77, times, 1, equals, 7.

Step-by-step explanation:

Hello, can someone answer this please?
What is 8,187 divided by 24 (not resulting in a decimal number)?

Answers

Answer:

8,187 divided by 24 is 341.125

Step-by-step explanation:

i hope this helps!

Answer:

The answer is 341.125.

But, if you want it without a decimal, you need to round.

You round up if the first number right of the decimal is over 5 or 5, and down if the first number to the right of the decimal is under 5.

Since the first number to the right of the decimal is 1, it is under 5.

So we round down.

So it would be 341.

The answer without a decimal is 341.

Hope this helps!

Elena works at the gummy candy factory. She packs 100 bags of gummy candy in 4
minutes. How many bags of gummy candy can she pack in 30 minutes?

Answers

7,500 bags of gummy candy

Answer: 750

Step-by-step explanation:

100/4 = 25 which means she packs 25 per minute so we multiply 25 by 30 minutes and the answer is 750

Examine the following figures to find out the pattern. 5 figures. A figure with 3 sides, figure with 4 sides, figure with 5 sides, figure with 6 sides, figure with 7 sides. How many sides would the 10th figure in this sequence have? a. 10 sides b. 12 sides c. 13 sides d. 14 sides

HELP PLEASE AND QUICK

Answers

Answer:

B. 12 sides

Step-by-step explanation:

Correct on edge

As x > - infinity f(x) > infinity and as x > infinity f(x) > infinity
As x > -infinity f(x) > - infinity and as x > infinity f(x) — infinity
Brianlest to whoever helps

Answers

Answer:

The first one.

Step-by-step explanation:

The line has a positive slope, so as x reaches infinity, f(x) will also reach infinity, and the same with negative. Hope this helps!

Solve for x.
10x + 44
8x - 23

Answers

Answer:

Simplifying

10x + 44 = 8X + -23

Reorder the terms:

44 + 10x = 8X + -23

Reorder the terms:

44 + 10x = -23 + 8X

Solving

44 + 10x = -23 + 8X

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-44' to each side of the equation.

44 + -44 + 10x = -23 + -44 + 8X

Combine like terms: 44 + -44 = 0

0 + 10x = -23 + -44 + 8X

10x = -23 + -44 + 8X

Combine like terms: -23 + -44 = -67

10x = -67 + 8X

Divide each side by '10'.

x = -6.7 + 0.8X

Simplifying

x = -6.7 + 0.8XStep-by-step explanation:

Solve the following system for all solutions:

(x - 1)^2 + (y + 3)^2 = 13

x + y = -3​

Answers

Answer:

( -4, -1 ) and ( -9, - 6)

Step-by-step explanation:

Given(x - 1)^2 + (y + 3)^2 = 13 x + y = -3​Solution

From the second equation we get

x = - y - 3

Substituting x in the first equation

(- y - 3 - 1)^2 + (y + 3)^2 = 13(-y - 4)^2 + (y + 3)^2 = 13(y+4)^2 + (y+3)^2 = 13y^2 + 8y + 16 + y^2 + 6y + 9 = 132y^2 + 14y + 12 = 0y^2 +7y +6 = 0(y+1)(y+6) = 0y = - 1y = - 6

Then

x = -4x = - 9

Answer

( -4, -1 ) and ( -9, - 6)

The gonzalez family is taking a cruise that costs $3,082.24 for a family of four. How much does it cost per person​

Answers

Answer:

12,328.96

Step-by-step explanation:

I did the math.

Answer:

$770.50

Step-by-step explanation:

divide $3,082.24 by 4

A system is described by the equations
2x + 3y = 10
4x + By = 20
For what value of B will the system have infinitely many solutions?

Answers

I got x=5/2 hope this helps:)

What is the slope? Please answer with a pic and some work

Answers

Answer:

m = rise over run

Rise: y/2 - y/1

Run: x/2 - x/1

m = slope

(x_1, y_1) = coordinates of first point in the line

(x_2, y_2) = coordinates of second point in the line

Step-by-step explanation:

Answer:

slope= (y2-y1)/(x2-x1)

1) (2-1)/(3-2)

=m=1

3) (5-4)/(2-2)

= UNDEFINED (vertical line)

5) (-6-6)/(3-(-3)

(-12/6)

= -2

CHECK

y=mx+b

6=-2(-3)+b

6=6+b

b=0

y=-2x connects both of these points on a graph

Write the equation of a line that passes through (0, -6) and (11,1).

Answers

Answer:

y=7/11x-6

Step-by-step explanation:

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