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
White raven [17]
2 years ago
5

Q: using the Substitution Method, and the value ory in

Mathematics
1 answer:
GenaCL600 [577]2 years ago
5 0

Answer:

Step-by-step explanation:

To properly apply the substitution method, it will be better for us to rearrange the system of equations to have similar variables on the same side

44 - 4 = -2y ----equation 1

10 = 7x + 4y --- equation 2

We can simply evaluate equation 1 to have

40 = -2y\\y = 40/-2 = -20\\

y = -20

From the first equation alone, we can evaluate the value of y as -20. This is because only one unknown is present in equation one, hence a single equation is sufficient enough to evaluate it. If to unknowns were present, the two equations would have been utilized to evaluate the solution.

You might be interested in
What are two divison ways that can help solve 7divided by 406
Kay [80]
You can round 406to420 then divide by 7 or 406-490 divided by 7
6 0
3 years ago
Boint b is on the x-axis and is 5 units away from the origin. What is the coordinate of point b
mars1129 [50]

Answer:

(5,0)

Step-by-step explanation:

4 0
3 years ago
You buy Apple stock for $120 per share over a period of time the stock value increased at a weekly rate of 5% you sell the stock
Rainbow [258]

Answer:

8.31  weeks

Step-by-step explanation:

Given that the cost of one share of Apple stock, C=$120

Rate is the increment of the stock value, R= 5%/week=0.05 / week.

Assuming that after t week, the stock has been sold for $180.

Since the stock value increased at 5% every week, so, the interest is compounded weekly, so

S=C\left(1+R\right)^t \\\\ \Rightarrow 180 = 120\left(1+0.05\right)^t \\\\  \Rightarrow 180 = 120\left(1.05 )^t \\\\

\Rightarrow \frac{180}{120}=1.05^t \\\\\Rightarrow 1.5=1.05^t

\Rightarrow \ln(1.5)=t \ln(1.05) [taking log both sides]

\Rightarrow t=\frac {\ln(1.5)}{\ln(1.05)}=8.31 weeks

Hence, after 8.31  weeks the stock has been sold for $180.

6 0
3 years ago
Can someone please help me with this
krek1111 [17]

Step-by-step explanation:

0.1 repeating is 1/9, so the number is 4 1/9.

5 0
3 years ago
What are the factors of the polynomial a^2 + a - 2? Select all that apply.
forsale [732]

Answer:

<h2>A) a - 1 and B) a + 2</h2>

Step-by-step explanation:

a^2+a-2=a^2+2a-a-2=a(a+2)-1(a+2)=(a+2)(a-1)

5 0
3 years ago
Other questions:
  • Do you know what is x+3x-8+x=55
    13·1 answer
  • The equation an = r ∙ an-1 is the _______________ formula for a geometric sequence.
    13·1 answer
  • Calculate the vertex of the parabola using the equation <br> Please helppp meee :((
    12·1 answer
  • What are the coordinates of the z- and y-intercepts in the equation 14x+ 8y=-56?
    15·2 answers
  • A quality control inspector has drawn a sample of 18 light bulbs from a recent production lot. If the number of defective bulbs
    7·1 answer
  • Annabelle went to the grocery store and bought bottles of soda and bottles of juice.
    9·1 answer
  • Łatwy ułamek <br> 36/7-3/5-4/10
    11·1 answer
  • What is the slope of 9 and 180
    8·1 answer
  • Simplify please:<br> 4x8=13-7
    9·2 answers
  • Quadrilateral A'B'C'D' is the image of quadrilateral ABC D under a dilation with a scale factor of 4. c What is the length of se
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!