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
Strike441 [17]
3 years ago
6

Substitution and elimination

Mathematics
1 answer:
nlexa [21]3 years ago
3 0
Whats The Question ????
You might be interested in
Okay so this is a weird one... if I take a medication twice a day for 9 months how many days have I taken that medication??? I h
Delvig [45]

Answer: 273 days i believe

Step-by-step explanation:

jan: 31 days

feb: 28 Days

mar: 31

apr: 30

may: 31

june: 30

july: 31

aug: 31

sept: 30

add all the days together to get 273

7 0
2 years ago
Where are the minimum and maximum values for f(x) = -2 + 4 cos x on the interval (0,21]?
Dafna11 [192]

Answer:

Step-by-step explanation:

Maximum value is when cos x = 1

So it is -2 + 4(1) = 2.

Minimum value, when  cos x = -1:

= -2  + 4(-1) = -6.

4 0
3 years ago
Read 2 more answers
Can you guys please help me with math? (Pt 2.)
Firlakuza [10]
(0,a)

it didnt move left or right on the x-axis
it went up a units (since its half of 2a)
5 0
3 years ago
Read 2 more answers
A collection of nickels and quarters are worth $2.85. There are 3 more nickels than quarters. How many nickels and quarters are
Alex777 [14]

Answer:

nickels = 12

quarters = 9

Step-by-step explanation:

Let number of quarters be "q", and

number of nickels be "n"

Nickels are worth $0.05 and Quarters are worth $0.25

Since all of them are worth 2.85, we can write:

0.25q + 0.05n = 2.85

Also, we know, there are 3 more nickels than quarters, so we can write:

n = 3 + q

Now, we can substitute equation 2 into equation 1 to get:

0.25q + 0.05n = 2.85\\0.25q + 0.05(3+q) = 2.85\\0.25q+0.15+0.05q=2.85

Now, we solve for q:

0.25q+0.15+0.05q=2.85\\0.3q=2.70\\q=9

There are 9 quarters.

We know n = 3 + q

So,

n = 3 + 9

n = 12

There are 12 nickels

7 0
3 years ago
Simplify: <br><br> I'm going to send you the picture lol, wait a minute...
Elden [556K]
The answer would be 7776^2 / 343^2 written as a fraction OR about 513.95402 written as a decimal.
8 0
3 years ago
Other questions:
  • Convert 5460 feet per minute to miles per hour. Round to the nearest whole number
    10·1 answer
  • Match the fractions with Equivalent percentages
    10·1 answer
  • James thought of a number and divided it by 9.
    8·1 answer
  • 1. A food safety guideline is that the mercury in fish should be below 1 part per million​ (ppm). Listed below are the amounts o
    13·1 answer
  • 4. A cone has a height of 4 and a base area of 9pi. What is it's volume? <br><br> Show work
    9·1 answer
  • A machine that cost £35,000 is operated 8 hours a day in a 5-day week but one hour each day is used for test purposes. For use o
    14·2 answers
  • Theo's mom brought an eight pack of juice boxes at the store for $4 find the unit rate for the juice boxes
    6·1 answer
  • Picture attached below<br><br> A. 1/3<br> B. 5/13<br> C. 4/5<br> D. 12/13
    10·1 answer
  • If I bite a waffle will I have liquid diarrhea?
    7·1 answer
  • PLS HELP ME THIS IS DUE IN A HOUR <br> How many grapefruits did she harvest?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!