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
Natalija [7]
3 years ago
12

Solve the system of equations using substitution. Show your work. y= 2x - 10 y= 4x - 8

Mathematics
1 answer:
Semenov [28]3 years ago
4 0
Y=2x-10
Y=4x-8
U substitute it and it turns into 2x-10 =4x-8
U get x=-1
Y=4*(-1)-8
Y=-12
(x,y)= (-1,-12)
If u have a phone u can use photo math or if u don’t there’s a thing called mathpapa
You might be interested in
Use the figure above to answer the questions.
DENIUS [597]

Answer:

the answer is d

Step-by-step explanation:

the shape of it as well

4 0
3 years ago
Is 0.034 1/100 of 3.4?
Sphinxa [80]
Yes 0.034 is the correct answer
6 0
3 years ago
Read 2 more answers
Classify the quadrilateral KLMN.<br> L<br> M<br> K<br> N<br> rectangle<br> parallelogram<br> rhombus
Nataly [62]

Answer:

rhombus

..............,

5 0
2 years ago
A sample of Iron-59 contains 50 mg. One hundred days later, the sample contains 10.75 mg. What is the half-life of iron-59, in d
exis [7]

Answer:

t_{1/2}=45.09 d    

Step-by-step explanation:

We can use the decay equation:

M=M_{0}e^{-\lambda t}

  • M(0) is the initial mass
  • M is the mass after t (1000 days) time
  • λ is the decay constant

But:

\lambda = ln(2)/t_{1/2}

  • t(1/2) is the half-life.

So, we can rewrite the initial equation:

M=M_{0}e^{-\frac{ln(2)}{t_{1/2}}t}

Now, we just need to solve it for t(1/2):

ln(\frac{M}{M_{0}})=-\frac{ln(2)}{t_{1/2}}t

t_{1/2}=-\frac{ln(2)}{ln(\frac{M}{M_{0}})}t

t_{1/2}=-\frac{ln(2)}{ln(\frac{10.75}{50})}100                

t_{1/2}=45.09 d    

I hope it helps you!

5 0
2 years ago
Please help solve, 7th grade work (see image)
lozanna [386]

Answer:

F) 63

Step-by-step explanation:

Find the original total stories 10 + 8 + 16 + 8 = 42.

Original ratio of Mary's stories to total stories is 8/42 or 4/21.

Then form equation 4/21 = 12/x ; multiply both sides of 4/21 by 3.

4/21 = 12/63

The students need to write 63 stories to keep the ratio of Mary's stories to total stories the same.

8 0
3 years ago
Other questions:
  • Which of the following is the solution to the equation x + 6.8 = 53.5?
    11·2 answers
  • Write 24,000 in expanded form.
    7·1 answer
  • If a polygon is rotated, which of the following characteristics of the polygon will always be the same? Select ALL that apply.
    7·1 answer
  • Given the expression −10p2q + 7p3q − 5q
    5·1 answer
  • Would somebody let me use their brainly so i can do work
    13·2 answers
  • Chang is estimating the volume of his bathtub the actual volume of his bathtub is 37 gal chang’s estimate is 31 gal find the abs
    7·1 answer
  • Dashboard
    11·1 answer
  • Math question for 30 points please answer correctly
    5·1 answer
  • 3x - 12y = 24<br><br> Which of the following points represents the x and y intercepts?
    13·1 answer
  • PHYSICS As a ray of light meets a mirror, the light
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!