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
JulsSmile [24]
1 year ago
8

!!!!Please help!!! I am dying!!

Mathematics
1 answer:
stellarik [79]1 year ago
6 0

Answer:

Therefore (x,y)=(3,7)

Step-by-step explanation:

put the second equation into the first

x+4=3x-2

x-3x=-2-4

-2x=-6

x=3

plug x=3 into the second equation

y=3+4=7

You might be interested in
Sally finds a coin with a radius of 1.5 centimeters and a thickness of 0.25 cm. It has a measured mass of 18.54 grams. How can S
mote1985 [20]

Answer:

Silver

Step-by-step explanation:

Find the volume of the coin

<u>Volume of a cylinder</u>

\textsf{V}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}

Given:

  • r = 1.5 cm
  • h = 0.25 cm

Substituting given values into the formula to find the volume:

\sf \implies V=\pi (1.5)^2(0.25)

\sf \implies V=0.5625 \pi \:cm^3

Find the density of the coin given it has a measured mass of 18.54 g

<u>Density formula</u>

\sf \rho=\dfrac{m}{V}

where:

  • \rho = density
  • m = mass
  • V = volume

Given:

  • m = 18.54 g
  • \sf V=0.5625 \pi \:cm^3

Substituting given values into the density formula:

\implies \sf \rho=\dfrac{18.54}{0.5625 \pi}

\implies \sf \rho=10.49149385\:g\:cm^{-3}

Given:

  • \textsf{Density of Lead}=\sf 11.3\:g\:cm^{-3}
  • \textsf{Density of Silver}=\sf 10.49\:g\:cm^{-3}

Therefore, as \sf \rho=10.49\:g\:cm^{-3} the coin is made from silver.

4 0
1 year ago
Given g(x) = 3x + 3 , find g(k)
xxTIMURxx [149]

Answer:

3k+3

Step-by-step explanation:

6 0
3 years ago
Help please. Only 20 minutes left.
Tcecarenko [31]

Answer:

-5

Step-by-step explanation:

4 0
2 years ago
What is the volume of a cereal box that measures 2 inches by 7 inches by 11 inches?
Juliette [100K]

Answer:

154 in^3

Step-by-step explanation:

to find a volume of a rectangular prism all you have to do is multiply the length, width and height

so for this

11(7) = 77

77(2) = 154

7 0
2 years ago
Which system of equations has no solutions? y - ​
Alona [7]
The second one on the top right
7 0
2 years ago
Other questions:
  • Graph the line y=-3x
    6·2 answers
  • In which number does the digit 3 have a value that is 10 times as great as the value of the digit 3 in 143,728? 137,982 142,398
    14·1 answer
  • Choice test you know the answer to the third question is not b or c you sure about a,d,or e. If you guess, what is the probabili
    10·1 answer
  • M + 4n = 9 <br> Answersssssssssssssss
    6·2 answers
  • MATH HELP
    9·1 answer
  • The equation yˆ=105.416x+1249.309 models the amount of money, in dollars, a charity raises during an annual event when x people
    14·1 answer
  • Jerry started doing sit-ups every day. The first day he did 18 sit-ups. Every day after that he did 2 more sit-ups than he had d
    6·1 answer
  • I will mark you brainlist!
    12·1 answer
  • Please help need ASAP
    7·1 answer
  • 6 cm<br> 6 cm<br> What is the area?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!