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
nekit [7.7K]
2 years ago
5

–4x-2y=-2 x-2y=9 what do you get if you subtract the second from the first

Mathematics
1 answer:
kirill115 [55]2 years ago
7 0

Answer:

-4×-2y=2

-4×+8y=-8

6y=6

y=1 then you the value of y and to put in any one equestion

You might be interested in
Which expression is equivalent to 1/3y?
Fittoniya [83]

Equivalent expression

y/3   = 1/3 * y

4 0
3 years ago
Read 2 more answers
An inverted pyramid is being filled with water at a constant rate of 25 cubic centimeters per second. The pyramid, at the top, h
UNO [17]

Answer:

\frac{225}{16} cm/s

Step-by-step explanation:

We are given that

\frac{dV}{dt}=25cm^3/s

Side of base=4 cm

l=w=4 cm

Height,h=12 cm

We have to find the rate at which the water level rising when the water level is 4 cm.

Volume of pyramid=\frac{1}{3}lwh=\frac{1}{3}l^2h

\frac{l}{h}=\frac{4}{12}=\frac{1}{3}

l=\frac{1}{3}h

Substitute the value

V=\frac{1}{27}h^3

Differentiate w.r.t t

\frac{dV}{dt}=\frac{3}{27}h^2\frac{dh}{dt}

Substitute the values

25=\frac{1}{9}(4^2)\frac{dh}{dt}

\frac{dh}{dt}=\frac{25\times 9}{16}=\frac{225}{16} cm/s

5 0
3 years ago
Inverse of f(x)=3/2x +6
kvasek [131]

Answer:

f(x) = (x - 6)/(3/2)

Step-by-step explanation:

7 0
3 years ago
What are the three angle measures in the triangle shown below
sergeinik [125]
B. 31°, 43°, 106°
since all angles of a triangle add up to 180°, you combine all of the equations to equal 180 and solve for X. the equation you would get it 3x+1+11x-4+5x-7=180. this simplifies to 19x-10=180. then you solve for x, and it is 10. then, you plug 10 into all of the equations separately to find the angles. therefore, the answer is B
4 0
3 years ago
Plot the x- and y-intercepts to graph the equation. y=−12x−3
Lisa [10]
X-intercept; -.25
y-intercept; -3
8 0
2 years ago
Read 2 more answers
Other questions:
  • Betty needs3/4 of a yard of fabric to make a skirt. she buys 9 yards. how many skirts can she make?
    7·1 answer
  • Bernice bought 3/1/2 pound of apples and 5/2/3 pounds of oranges and 11/12 pounds of bananas what was the total weight of fruit
    12·2 answers
  • Five,
    11·1 answer
  • If the scale factor is 5, how many times larger will the scaled copy's area be?
    5·1 answer
  • 1. If f(x) = 9x2 + 5x - 8, then f(-2) = ?
    9·2 answers
  • (Please help, Very desperate and I have a limited amount of time to get this done please hurry asap)
    15·1 answer
  • 2. Without solving the systems, explain why the following systems must have the same solution.
    5·2 answers
  • A CD usually sells for $13.00. If the CD is 30% off, and sales tax is 5%, what is the total price of the CD, including tax?
    13·1 answer
  • Find the median of the set of data.<br> 3, 3.9, 3.7, 3.1, 3.3 3.6, 3.5, 3.8
    7·2 answers
  • What is the solution to the system of equations?<br> y = 2/3 x + 3<br> X= -2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!