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
densk [106]
3 years ago
12

Two numbers have a product of 20. The second number is three less than twice the first number. What are the two numbers?

Mathematics
1 answer:
yan [13]3 years ago
4 0

Answer:

4 and 5

Step-by-step explanation:

xy = 20

x = 2y - 3

(2y-3)y = 20

2y^2 - 3y = 20

2y^2 - 3y - 20 = 0

Solve the quadratic equation

you get y = 4, -5/2

Use 5 since it is one of the options

xy = 20, y = 4

x = 5

You might be interested in
Help please????????????
fredd [130]

Answer:

hiiii i total can help im doing this in school

Step-by-step explanation:

D

7 0
3 years ago
Divide 32 in the ratio 3:1
Igoryamba
------------------------------------------------
Ratio
------------------------------------------------
3 : 1

------------------------------------------------
Find total parts
------------------------------------------------
3 + 1 = 4

------------------------------------------------
Split the 32 according to the parts
------------------------------------------------
4  parts = 32
1 part = 32 ÷ 4
1 part = 8
 3 part = 8 x 3 = 24

------------------------------------------------
Split the 32 into the ratio
------------------------------------------------
24 : 8

------------------------------------------------
Answer: 24 : 8 
------------------------------------------------
3 0
3 years ago
Whats 7, −6, 4, −10, 3 least to greatest
exis [7]

Answer:

-10, -6, 3, 4, 7

Step-by-step explanation:

Hope it helps ^^

4 0
3 years ago
HELP ME PLZZZZ!!!!!<br><br><br> It’s just 21 and 22
galina1969 [7]

Answer:

21) 12 cm

22) 5.9 cm

Step-by-step explanation:

21) The base is 10, and if the other two sides are congruent and the perimeter is 36, we can figure out with simple algebra that the sides are 13 cm long.

Half of 10 is 5, so we can use the pythagorean theorem.

5^2+x^2=13^2

Rearranging the variables we have 169-25=x^2

144=x^2

x can be plus or minus 12, but since negative length is impossible we find that x is positive 12 cm.

22) We want to use sine, because we have opposite and hypotenuse. A simple and easy way to memorize this is the SohCahToa method. If we have opposite (O) and hypotenuse (H) we have OH. Soh has the letters O and H, and the S means we should use sine.

sine 36=a/10

Plug this into a calculator or desmos scientific calculator to get a=5.9

7 0
3 years ago
What is 8 and 4/25 and as a mixed fraction or mixed number.
Sphinxa [80]

Answer:

Improper fraction for 8 4/25 is 204/25

Step-by-step explanation:

The numbers in the mixed fraction are defined as follow

8 = whole number

4 = numerator

25 = denominator

 Multiply the whole number by the denominator

8 × 25 = 200

Add the product from Step 1 to the numerator

200 + 4 = 204

Write answer from Step 2 over the denominator

204/25

The mixed number 8 4/25 converted to improper fraction is therefore :

3 0
3 years ago
Other questions:
  • As the age of the car increases, its value decreases. Which
    11·1 answer
  • Gabriel is making a mixture of compost and soil to use for a special plan he wants his final mix to be two part compost to 10 pa
    12·1 answer
  • The bulls eye on an archery target has a radius of 3 inches. the entire target has a radius of 9 inches. to the nearest tenth, f
    6·1 answer
  • Match the monomer to the correct macromolecule<br>​
    8·1 answer
  • Find the x of (2x+8)+(71-x)=180
    6·2 answers
  • On the map the scale is 1 inch=125 miles. What is the actual distance between the two cities if the map distance is 2 3/4 inches
    11·2 answers
  • Determine the center and radius of the following circle equation:<br> x2 + y2 – 16x + 10y + 80 = 0?
    8·1 answer
  • Pls help need help ASAP 50 points you will be reported if the answer is wrong
    12·2 answers
  • Answer all questions:
    5·1 answer
  • Dan is helping to build a stage for a concert.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!