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
nexus9112 [7]
3 years ago
10

I need help on this question ​

Mathematics
1 answer:
Sedbober [7]3 years ago
3 0

Answer:

Step-by-step explanation:

It would be answer b, because if you were to solve this, then this is how you would do it (in the most effecient way):

2.5x + 1.2 = 1.2x + 4.2

2.5x + 1.2 - 1.2 = 1.2x + 4.2 - 1.2

2.5x = 1.2x + 3

2.5x - 1.2x = 1.2x - 1.2x + 3

1.3x = 3

1.3x/1.3 = 3/1.3

x = 3/1.3

You might be interested in
21 is 30% of what number?
WARRIOR [948]

<u>Answer</u>:

21 is 30% of 70

<u>Explanation</u>:

We know that 100% is the original number.

Equation:

(21/30)*100

21/3 * 10

7 * 10

70 ....this is the answer, original number.

5 0
3 years ago
Read 2 more answers
stion 1 OT 5A researcher recorded the number of swans and the number of ducks in a lake every month. Function s represents the n
Anon25 [30]

Given functions are

s(n)=2(1.1)^n+5_{}d(n)=4(1.08)^n+3

The total number of ducks and swans in the lake after n months can be determined by adding the functions s(n) and d(n).

t(n)=s(n)+d(n)

t(n)=(2(1.1)^n^{}+5)+(4(1.08)^n+3)

t(n)=2(1.1)^n+5+4(1.08)^n+3

t(n)=2(1.1)^n+4(1.08)^n+5+3

t(n)=2(1.1)^n+4(1.08)^n+8

Taking 2 as common, we get

t(n)=2\lbrack(1.1)^n+2(1.08)^n+4\rbrack

Hence The total number of ducks and swans in the lake after n months is

t(n)=2\lbrack(1.1)^n+2(1.08)^n+4\rbrack

8 0
1 year ago
Pls help me find perimeter and area, id really appreciate it. thank u!
Agata [3.3K]
Perimeter =  9 + 13 + 6 = 28 m

area = 1/2 x 9 x 5.3 = 23.85 square m
8 0
3 years ago
In a class of 30 students, 18 are boys.what percent of students are girls
SIZIF [17.4K]

There are 30-18 = 12 girls. Their percentage is

... 12/30 × 100% = 40%

4 0
4 years ago
Write these as normal numbers.
netineya [11]

Answer:

Step-by-step explanation:

5.1 × 108 = 550.8

9.6 × 10^0

10^0 = 1

9.6 × 1 = 9.4

2.44 × 10 = 24.4

5.023 × 1010 = 5073.23

4 0
3 years ago
Other questions:
  • What is the gcf of 4a^3 and 9a^4
    5·1 answer
  • Brenda conducts a survey of 100 students to see how their study habits and their grades are related. She wants to see whether st
    8·1 answer
  • what is the answer to the multiplication problem. Jhon has 20 fish if he lets 6 fish go how many fish dose Jhon have?
    9·1 answer
  • The angles of a triangle must add up to ___ degrees ?
    11·2 answers
  • PLZZ HELP I NEED AN EXPERT ANSWER
    10·1 answer
  • X-5 is greater than or equal to-8​
    8·1 answer
  • Find the scale factor of trapezoid \mathrm{Q}\mathrm{R}\mathrm{S}\mathrm{T}QRST if it is dilated to \mathrm{Q}^{'} \mathrm{R}^{'
    10·1 answer
  • Find mHK please help
    11·1 answer
  • Please help it will be brainlist please make sure you are 100% the awnser is right
    14·1 answer
  • How do you solve<br> 9/y = 12?<br> This is a two step equation
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!