1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleks04 [339]
3 years ago
7

Questions 19 - 23. 23 is cut off a part so the second page is the rest of it.

Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
6 0
20. H=5 because 5x5 equals 25
C=10 because 2+10=12
Y=10 3x10=30 , 30+10=40

ludmilkaskok [199]3 years ago
5 0

19. Distributive property is <u>multiplying everything outside of the parenthesis by everything in them</u>!

Let's do it

2(3x + 4y)

We will multiply 2 by 3x and 2 by 4y

2 × 3x + 2 × 4y = ?

6x + 8y

20. Solving algebraically is using multiplication and division, addition and subtraction!

<u>5h = 25 </u>

divide 25 by 5 to find h

h = 25/5

h = 5

<u>2 + c = 12 </u>

subtract 2 from both sides

2 + c - 2 = 12 - 2

c = 12 -2

c = 10

3y + 10 = 40

We need to do subtraction and division for this one!

Let's subtract 10 from both sides

3y + 10 -10 = 40 - 10

3y = 30

Divide 30 by 3 to find y

y = 30/3

y = 10

<em><u>CAN't SOLVE #21 BECAUSE OF LACK OF INFO </u></em>

22. To find equivalent ratios, <u><em>let's simplify them!</em></u>

To simplify ratios, we need to find the highest common factors

a. 2:6

The <em>highest common factor between 2 and 6 is 2,</em> so let's divide both sides by 2

We get ... 1 : 3

b. The <em>highest common factor between 12 and 30 is 6</em>, so let's divide both sides by 6

We get ... 2 : 5

23. To find how many songs are played during a certain amount of time, all we need to do is<em> multiply 12</em> (t<u>he amount of songs played in 1 hour</u>) <em>by however many hours they say</em>!

This can be expressed like this

a. # of songs = 12 × h

Now let's use this expression to answer the next two parts of this question!

b. to find the "# of songs" played in 24 hours, all we need to do is multiply 12 by 24! 24 will be the "h" in our expression. h is the number of hours

Here's what it looks like using our expression we made

# of songs = 12 ( 24)

Solve using a calculator

# of songs = 288

c. To find how many hours it will take to play 60 songs, we will put it in place of the LEFT SIDE of the equation that says "# of songs"

Let's solve it now!

It looks like this ... 60 = 12h

Let's divide to find the number of hours!

60/12 = h

60/12 = 5

It will take 5 hours to play 60 songs!

Hope I helped! Message me or comment if you have any questions or concerns! :)

You might be interested in
Complete the square: -3x^2 + 30x -52 express in vertex form
nadezda [96]

the answer to this is

the two is for the top of the five  2

                                            -3(x - 5) +23

4 0
3 years ago
At 106°F, a certain insect chirps at a rate of 67 times per minute, and at 108°F, they chirp 83 times per minute. Write an equat
Step2247 [10]

Answer:

y=8x-781

Here, x represents temperature and y denotes rate of chirping per minute.

Step-by-step explanation:

Let x represents temperature and y denotes rate of chirping per minute.

At 106°F, a certain insect chirps at a rate of 67 times per minute.

Take (x_1,y_1)=(106,67)

At 108°F, they chirp 83 times per minute.

Take (x_2,y_2)=(108,83)

Slope intercept form:

y-y_1=(\frac{y_2-y_1}{x_2-x_1})(x-x_1)

y-67=(\frac{83-67}{108-106})(x-106)\\\\y-67=(\frac{83-67}{108-106})(x-106)\\\\y-67=(\frac{16}{2})(x-106)\\\\y-67=8(x-106)\\y-67=8x-848\\y=8x+67-848\\y=8x-781

3 0
3 years ago
Mindy is 36 years old. Mindy’s age is 3 years older than two times Jake’s age. Let j represent Jake’s age.
I am Lyosha [343]
J=30          !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
6 0
3 years ago
Read 2 more answers
The scale of a map is 1:40000. What distance on the map represents a real distance of 5km?​
Rufina [12.5K]

Answer:

0.125

Step-by-step explanation:

1=40000

x-5000

x=5000÷40000=1/8=0.125

6 0
3 years ago
What is the factored form of the trinomial
worty [1.4K]

Answer:

which pair of numbers has a product of ac and a sum of b

ac = (-5)(-3)

sum = -8

x^2 - 5x - 3x + 15

x(x-5)-3(x-5)

(x-3) (x-5)

x=3 x=5

what is the factored form of the trinomial = (x - 3) (x - 5)

2. Factor the following:

x^2 - 8 x + 15

The factors of 15 that sum to -8 are -3 and -5. So, x^2 - 8 x + 15 = (x - 3) (x - 5):

Answer:  (x - 3) (x - 5)

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • The 7th graders in the middle school are going on a field trip to the aquarium. They will spend 4 ¼ hours walking inside of the
    12·1 answer
  • Find the 5th term of the sequence which has a first of 1 and a common ratio of 2.3
    5·1 answer
  • an someone please help me: A football field measures 300 feet in length. It can also be expressed as approximately 5.7 times 10
    6·2 answers
  • The function f(x)=12,419× represents the number of vistors to a website x years after it was launched. Each year , the number of
    10·1 answer
  • You look over the songs in a jukebox and determine that you like 1414 of the 5252 songs. ​(a) What is the probability that you l
    7·1 answer
  • What is the interquartile range of the data set?
    11·1 answer
  • Which expression is equivalent to (4p^-4 q)^-2/ 10pq^-3?
    9·2 answers
  • Solve for X: 39 - 7x = -4 (7x + 7) = 4
    7·2 answers
  • A ticket originally cost $20, but it's price decreases by 20%
    14·2 answers
  • C)please hurrrrrryyyy!!!! I’m
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!