MATHEMATICS HIGH SCHOOL

X = y - 3x + 3y = 13

What is the solution to the system of equations?

A) (1, 4)

B) (4, 1)

C) (7, 4)

D) (2.5, 5.5)

Answers

Answer 1
Answer: If you would like to solve the system of equations, you can do this using the following steps:

x = y - 3
x + 3y = 13 ... y - 3 + 3y = 13
___________
y - 3 + 3y = 13
4y = 13 + 3
4y = 16
y = 4

x = y - 3 = 4 - 3 = 1

(x, y) = (1, 4)

The correct result would be A) (1, 4).

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A plane is an undefined term because

Answers

A place is an undefined term because it is described generally, not using a formal definition.

Hope this helped :)

Answer:

is described generally, not using a formal definition

I TOOK THE TEST JUST NOW AND GOT IT RIGHT

Step-by-step explanation:

Identify the coefficient of 17xy3z12
A. 3
B. 1
C. 17
D. 12

Answers

A coefficient is a numerical or constant quantity placed before and multiplying the variable(s) in an algebraic expression. In the question Ïdentify the coefficient of 17xy^3z^12" the correct answer is 17 (option C). The coefficient of 17xy^3z^12 is 17.
The correct answer is 17.

The area of the garden is 160 meter squared.Suppose the length of the garden is 3m more than twice its width.What is the length of the garden?

Answers

w-width\n\n2w+3-length\n\n160m^2-area\ of\ the\ garden\n\nw\time(2w+3)-area\ of\ the\ garden\n\nw(2w+3)=160\n\n2w^2+3w-160=0

a=2;\ b=3;\ c=-160\n\n\Delta=b^2-4ac\to\Delta=3^2-4\cdot2\cdot(-160)=9+1240=1249\n\nw_1=(-b-\sqrt\Delta)/(2a);\ w_2=(-b+\sqrt\Delta)/(2a)\n\n\sqrt\Delta=√(1249)\approx35.34\n\nw_1=(-3-35.34)/(2\cdot2) < 0;\ w_2=(-3+35.34)/(2\cdot2)=(32.34)/(4)=8.085\ (m)\n\nlength\approx2\cdot8.085+3=19.17\ (m)

a baker is calculating the charge for two types of cookies. what formula tells the cost, in dollars, if chocolate chip cookies are $2.00/dozen and lemon frosteds are $1.50/dozen? let c=number of dozens of chocolate chip cookies; l=number of dozens of lemon frosteds; t =total charge. A. T=3.50(L+c) B. T=200c+150L C. T=2.00c+1.50L D. T=1.50c+2.00L

Answers

If you would like to find the formula that tells the cost in dollars, you can calculate this using the following steps:

c ... number of dozens of chocolate chip cookies
l ... number of dozens of lemon frosteds
t ... total charge
t = c * $2.00 + l * $1.50
t = 2.00 * c + 1.50 * l

The correct result would be C. T=2.00c+1.50L.

Answer:

Option C is correct

T= 2.00c+1.50l

Step-by-step explanation:

Given the statement:  

A baker is calculating the charge for two types of cookies.

Here,

c =the number of dozens of chocolate chip cookies,

l=number of dozens of lemon frosteds and  

T =total charge in dollars.

If chocolate chip cookies are $2.00/dozen

then;

Cost of chocolate chip cookies in c dozen = $ 2c

It is also given that:

lemon frosted are $1.50/dozen

then;

Cost of lemon frosted in l dozen = $ 1.50 l

Then total charge(T) in dollars for this problem is given by:

T= 2.00c+1.50l

Therefore, the formula tells the cost, in dollars is,

T= 2.00c+1.50l

During the first week of the year, Angelina's dad give her $10 and says that he will give her $10 more each week for the rest of the year. At the end of the year, how much money will Angelina receive from her dad? (Hint : 1 year = 52 weeks) Make a table to show the pattern, and explain your answer.

Answers

52x10= 520+10=530....... She will have $530 by the end of the year

Using a tape measure Becky Jo found that the circumference of the great redwood was 900cm. She estimated that its diameter was 300cm. Was her estimate a little too large or a little too small? Why?

Answers

The length of the circle - the product of the diameter and the number Pi
l = dπ
l = 900cm
π ≈ 3,1415 przyjmiemy wartość 3
900cm = d* 3   [:3
d = 300cm  
Becky rounded value of Pi , hence the difference in result

More accurate calculation

l = d*π
900cm = d*3,1415
d = 900cm : 3,1415 = 286,49cm

Becky overestimated the outcome
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