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
Jobisdone [24]
3 years ago
9

Can you help me on this?

Mathematics
1 answer:
Illusion [34]3 years ago
5 0

Answer:

y = 30

Step-by-step explanation:

We can use ratio's to solve this

40        20

-----  = -----------

100       20 + y


Using cross products

40 * (20+y) = 20*100

Distribute

800 + 40y = 2000

Subtract 800 from each side

40y = 2000-800

40y = 1200

Divide by 40

y = 1200/40

y =30

You might be interested in
if a point works in both equations of a linear system, then that point must be the solution to the linear system when you solve
mariarad [96]
True, if a points works in both equations of a linear system, then that point is the solution.
4 0
3 years ago
PLEASE HELP!!! I really don't understand how to calculate the mileage and SHOW YOUR WORK PLEASE!!! THANK YOU!!
devlian [24]
Mileage gas/gallon
360m/25gallons=14.4m/gallon
480m/32gallons=15m/gallon
8 0
3 years ago
Is the square root of 10 a rational number
laila [671]

Answer:

No

Step-by-step explanation

The square root of 10 is irrational because it isn't a fraction

7 0
2 years ago
Read 2 more answers
Jose earns extra money, m, working two weekends with his dad. He is saving to buy a new pair of skis that cost $147. Fantasia sa
Olegator [25]

Answer:

where is her work?

Step-by-step explanation:

maybe you forgot to put the pic

6 0
2 years ago
Answer this please. Identify the vocabulary word that matches the picture. *​
Greeley [361]

Answer:

Step-by-step explanation:

The line BD divides a right angle into two acute angles <CBD + <DBA

They add to 90.

They are therefore complementary.

The word you are looking for is complementary.

4 0
3 years ago
Other questions:
  • Last year, Rachel opened an investment account with $8200. At the end of the year, the amount in the account had decreased by 7.
    5·1 answer
  • What would be the total area of a piece of land that was made up of three squares that each has a side length of 4x-2?
    9·1 answer
  • Name and describe all the angles in the drawing below
    6·2 answers
  • ⚠100 POINTS!!!!⚠ HURRYYY PALEASEE
    9·2 answers
  • WILL MARK BRAINLEST HELP ASAP!!!!!
    5·2 answers
  • A prescription calls for the following: Sodium citrate 5 g Tartar Emetic 0.015 g Cherry syrup ad 120 mL Using a balance with a s
    11·1 answer
  • The diameter of a cylinder is 3yd the height is 8yd
    13·1 answer
  • Which number is 1/10 the value of 600?
    10·2 answers
  • Chuck goes to a community college. There is an enrollment fee of $207.55, plus $223.07 per credit hour. Which equation
    9·1 answer
  • The expansion of (1 + px +qx2)8 is 1 + 8x + 52x² + kx³+... . Calculate the values of p, q and k.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!