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
masya89 [10]
3 years ago
14

The price of a book rises from £16 to £20 work out the percentage increase​

Mathematics
1 answer:
Vladimir79 [104]3 years ago
5 0

Answer:

25%

Step-by-step explanation:

20-16=4

So

16…4

1 … 4/16

100…4/16×100

1/4×100

25%

You might be interested in
Write five pairs of integers (a, b) such that a÷b equals to - 6​
Volgvan

Answer:

(-6,1) (-12,2) (-18,3) (-24,4) (-30,5)

Hope this helps!

5 0
3 years ago
6k ÷ 7 = -3<br> Solve for k
fomenos

Answer:

k = -3.5

Step-by-step explanation:

6k ÷ 7 = -3

Multiply 7 to both sides

6k = -21

Divide both sides by 6

6k/6 = -21/6

k = -3.5

To check if the answer is correct or not, you can always plug in -3.5 for k in the equation.

6(-3.5) ÷ 7 = -3

-21 ÷ 7 = -3

-3 = -3

-3 equals -3 so it is correct that k = -3.5

4 0
3 years ago
An aircraft takes off and climbs at a constant 30° angle until it reaches an altitude of 6 miles.
Firlakuza [10]

Answer:

  • 10.4 miles

Step-by-step explanation:

Let the horizontal distance is x

<u>Use tangent to solve this:</u>

  • tan 30° = 6/x
  • x = 6 / tan 30°
  • x = 10.4 mi (rounded)
5 0
3 years ago
Which of the following is a solution of the system 2x + y = 9 and 3x + 5y = 19.​
Nezavi [6.7K]

2x+y=9

3x+5y=19

I will do this problem in 2 ways. I.)Substitution II.)Elimination

Solution I.) Substitution

We can subtract 2x from both sides in the first equation.

y=9-2x

Now we can substitute the y in the second equation with 9-2x

3x+5(9-2x)=19

-7x+45=19

-7x=-26

x=26/7

y=9-2(26/7)=11/7

Solution II.)Elimination

We can multiply both side of first equation by 5 to get a 5y in both equations.

10x+5y=45

Now because both are positive 5y we just need to do simple subtraction of the 2 equation, each side respectively.

(10x+5y)-(3x+5y)=45-19

7x=26

x=26/7

2*26/7+y=9

y=11/7

Ultimately you get the same answer, both are viable methods, some problems are faster with one method but I recommend mastering both since they are very useful.

4 0
3 years ago
What type of simple machine is a vise and what does it do also what is a crow bar
mel-nik [20]
A crow bar is a bar that help you lift thing up
4 0
3 years ago
Other questions:
  • Suppose that you believe that the probability you will get a grade of B or better in Introduction to Finance is .6 and the proba
    5·1 answer
  • A Japanese garden has a circular koi pond in the middle that has a radius of 3 feet.
    7·2 answers
  • What is the solution to the system of equations graphed below?
    6·2 answers
  • Last question helo me pls
    12·1 answer
  • If x/5+6=-14, then x=
    9·2 answers
  • I need to put 3y+18=-8x+3 In slope intercept form
    6·1 answer
  • During a Team scavenger hunt event, the average number of steps taken was 1800. Calculate the distance traveled using 10,000 ste
    13·1 answer
  • Mr. Brown purchased 5.75 pounds of chicken that cost $2.40 per pound.
    12·1 answer
  • Someone please help me answer this!!
    14·1 answer
  • Can you guys help i’m kinda struggling
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!