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
coldgirl [10]
3 years ago
15

-x+2y=9 -7x-2y=-1 Solve each system by elimination

Mathematics
1 answer:
g100num [7]3 years ago
5 0
X - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me
You might be interested in
You can earn 5 coins
frozen [14]

Answer:

no

Step-by-step explanation:

9y-5-8y+8= y+3

9y-8y=y

-5+8=3

7 0
2 years ago
Isi drilled a hole that is 5/9 inch wide.she has a screw that is 5/6 inch wide.is the hole wide enough to fit the screw
koban [17]

NO the screw is to big to fit

The variable in non simplified form will be

5/9 is 10/18

5/6 is 15/18

Since 5/6 is larger the screw will not be able to fit in a smaller hole.

Hope this helped!

5 0
2 years ago
What is the f of x over the g of x when f(x) = 6x3 − 19x2 + 16x − 4 and g(x) = x − 2? (2 points)
VikaD [51]
You're being asked to divide 6x^3 - 19x^2 + 16x - 4 by x - 2.

Try using synthetic division, if you know it:

     _______________
2  /   6    -19    16    -4
              12     -14    4
    --------------------------
        6     -7       2     0

6, -7 and 2 are the coefficients of the quotient.  The quotient (answer to this question) is

6x^2 - 7x + 2
4 0
3 years ago
Quinton bought x number of shares for p dollars and paid a 0.5% commission. He sold the stock for y dollars and paid a flat fee
Ksju [112]

Answer:

y-(0.05xp+7)

Step-by-step explanation:-

As per the statement:

Quinton bought x number of shares for p dollars and paid a 0.5% commission

⇒0.05xp

It is also given that: He sold the stock for y dollars and paid a flat fee of $7.

⇒y-7

then;

Net proceeds is given as:

y-7-0.05xp = y-(0.05xp+7)

Therefore, Quinton's net proceeds algebraically is y-(0.05xp+7)

4 0
3 years ago
Darren wanted to see how contagious yawning can be. To better understand this, he conducted a social experiment in which he yawn
denis23 [38]

Answer:

10.5 minutes

Step-by-step explanation:

Thinking about the problem

The modeling function is of the form P(t)=A⋅Bf(t), where B=4B=4B, equals, 4 and f(t)=\dfrac{t}{10.5}f(t)=

10.5

t

​

f, left parenthesis, t, right parenthesis, equals, start fraction, t, divided by, 10, point, 5, end fraction.

Note that each time f(t)f(t)f, left parenthesis, t, right parenthesis increases by 111, the quantity is multiplied by B=4B=4B, equals, 4.

Therefore, we need to find the ttt-interval over which f(t)f(t)f, left parenthesis, t, right parenthesis increases by 111.

Hint #22 / 3

Finding the appropriate unit interval

fff is a linear function whose slope is \dfrac{1}{10.5}

10.5

1

​

start fraction, 1, divided by, 10, point, 5, end fraction.

This means that whenever ttt increases by \Delta tΔtdelta, t, f(t)f(t)f, left parenthesis, t, right parenthesis increases by \dfrac{\Delta t}{10.5}

10.5

Δt

​

start fraction, delta, t, divided by, 10, point, 5, end fraction.

Therefore, for f(t)f(t)f, left parenthesis, t, right parenthesis to increase by 111, we need \Delta t=10.5Δt=10.5delta, t, equals, 10, point, 5. In other words, the ttt-interval we are looking for is 10.510.510, point, 5 minutes.

Hint #33 / 3

Summary

The number of people who yawned quadruples every 10.510.510, point, 5 minutes.

7 0
3 years ago
Other questions:
  • If you answer right ill give you brainly
    15·2 answers
  • Solve for Tangent and Cosine
    8·1 answer
  • Toyland is having a sale. All items are 20% off. How much will you save on an item that usually sells for 45%
    14·1 answer
  • What is a conversion factor that you can use to convert gallons to pints?
    10·1 answer
  • I’ll give brainliest.
    9·1 answer
  • Halley drank 2 1/3 glasses of milk on monday. tyrone drank 1 1/3 times as much milk as halley. how many glasses of milk did tyro
    10·1 answer
  • The circumference of a circle is divided into twelve equal arcs. The measure of each arc is degrees.
    13·2 answers
  • What plus what equals 98
    7·1 answer
  • A newborn turtle has a shell with a 1-inch diameter. The shell keeps a similar shape as the turtle grows. After a year, the shel
    9·1 answer
  • Evaluate a1 (r)^n-1 for a1 = 2, r= 3, and n = 4.<br> A. 216<br> B. 18<br> C. 32<br> D. 54
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!