Answer:
21
Step-by-step explanation:
slove: x = 3y - 7
4x + 5y =- 11
show steps
Answer:
1.1 Solve x-3y+7 = 0
recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).
"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.
In this formula :
y tells us how far up the line goes
x tells us how far along
m is the Slope or Gradient i.e. how steep the line is
b is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the line properties. We shall now graph the line x-3y+7 = 0 and calculate its properties
Step-by-step explanation:
The anser is in the screenshots
Answer: Solution: (-4, 1)
Step-by-step explanation:
x = 3y - 7
4x + 5y = -11
Substitute x for 3y - 7
4x + 5y = -11
4 (3y - 7) + 5y = -11
12y - 28 + 5y = -11
17y - 28 = -11
Add 28 to both sides
17y = 17
y = 1
x = 3y - 7
x = 3(1) - 7
x = 3 - 7
x = -4
Solution: (-4, 1)
Solve for x. Round to the nearest tenth, if necessary.
Answer:
The answer is 8
Step-by-step explanation:
By using the theory of Euclid
[tex] {x}^{2} = 4 \times 16 = 64 \\ x = 8[/tex]
Which rational number is NOT greater than point A?
Step-by-step explanation:
) Every positive rational number is greater than 0.
(ii) Every negative rational number is less than 0.
(iii) Every positive rational number is greater than every negative rational number.
(iv) Every rational number represented by a point on the number line is greater than every rational number represented by points on its left.
(v) Every rational number represented by a point on the number line is less than every rational number represented by paints on its right
Sarah hired a painter to paint her bedroom walls and ceiling. Each of the four bedroom walls is 18 ft. Long and 8 ft. High. Two walls each have one door, and both doors measure 3 ft. By 7 ft. One wall has a window that is 3 ft. By 5 ft. The doors and window do not have to be painted. A gallon of paint can cover 300 ft.2. A hired painter claims that he will need three gallons to paint the one room. Is the estimate correct?
Answer:
The estimate is not correct?
Step-by-step explanation:
Given data
Area of wall = 18*8
=144ft^2
=4*144
=576ft^2
Area of doors
=3*7
=21ft^2
=2*21
=42ft^2
Area of window
=3*5
=15ft^2
Hence the total surface area of the room
=576-42-15
=519ft^2
The amount of paint needed= 519/300= 1.73
Approximately 2 gallons
We are told that 1 gallon will cover 300ft^2
Hence 3 gallons will cover 300*3= 900ft^2
Therefore the painter overestimated the amount of paint needed
As 2 gallons will do the job
What is the value of x?
3
6
8
4
I believe x=4
and the y=3
Answer:
x = 4
y = 3
Step-by-step explanation:
2 × 4 = 8
8 + 10 = 18
2 × 3 = 6
6 + 4 = 10
hiii help pls! tysmmm!
A farmer harvested 1,760 pieces of fruit. 65% of them were not oranges. How many oranges did the farmer harvest?
Answer:
Number of oranges= 616
Step-by-step explanation:
Giving the following information:
A farmer harvested 1,760 pieces of fruit. 65% of them were not oranges.
To calculate the number of oranges, we need to use the following formula:
Number of oranges= total number of fruits*percentage of oranges
Number of oranges= 1,760 * (1 - 0.65)
Number of oranges= 616
A football jersey that originally sells for $75 is on sale for 25% off the original price. What is the SALE PRICE of the football jersey? *
$18.75
$74.75
$56.25
$50.00
Answer:
Step-by-step explanation:
All you do is multiply 75 x .25 = 18.75
Subtract 75 - 18.75 = $56.25
i don't get Benchmark question #4
Answer:
C
Step-by-step explanation:
4 quartz per gallon
4 x 22 = 88 Containers
Answer:
c
Step-by-step explanation:
25. Write the elements of the given set A A= { x|x is a square number less than 5}
1) 2
2) 4
3) 1
Answer:
A = (1, 4)
Step-by-step explanation:
Given :
Square numbers include : 1², 2², 3², 4²,...
x|x square numbers less than 5
1² = 1
2² = 4
3² = 9 (not applicable)
Square numbers less than 5 are ; 1, 4
Hence,
Set A = (1, 4) where, x|x square numbers less than 5
A = (1, 4)
Delilah deposits $8,255 in an account that pays 4.2% simple interest. How much money will be in her account after 8 years?
A.$2,773.69
B.$11,028,68
C.$12,254,66
D.$27,736,80
Answer:
$11,028.68
Step-by-step explanation:
As we all know, the simple interest formula is as follows:
[tex]P(1+rt)[/tex]
Wherein:
P = Principal amount
r = rate (in percentage so, rate/100)
t = time (in years)
Hence, when we substitute in these values,
[tex]8255(1+(4.2/100)*8)[/tex]
= $11,028,68
it will be 4.2/100 as it is percentage form.
Help me please
Which of the following best describes π?
A. The ratio of the radius of a circle to its diameter
B. The ratio of the circumference of a circle to its radius
C. The ration of the circumference of a circle to its diameter
D. The ratio of the diameter of a circle to its radius
Answer:
Step-by-step explanation:
The ratio of the circumference to its diameter.
the proportion can be written this way
Circumference / diameter = pi / 1
A number line going from 12 to 20. An open circle is at 17. Everything to the right of the circle is shaded. Which inequality does the graph represent? x > 17 x <17 x Less-than-or-equal-to 17 x Greater-than-or-equal-to 17
Answer:
x > 17
Step-by-step explanation:
x > 17
The open circle means that it is not equal to 17. The shaded area to the right represents that it can be larger than or greater than 17.
Answer:
x > 17 your welcome
Step-by-step explanation:
i don't know i just know it
Please help this is timed
Answer:
The last one (f) hope u still have time
What would be the first step in simplifying the expression 27 ÷ (4 + 5)⋅6?
Select one:
A. Divide the 27 by the 4.
B. Multiply the 5 and the 6.
C. Add the 4 and the 5.
D. Divide the 27 by the 6.
Answer:
Step-by-step explanation:
What is the value of x in the equation below?
X + ¼ = - ⅝
Answer:
Step-by-step explanation:
Subtract 1/4 from both sides. (Change 1/4 to 2/8 so that it can be subtracted from 5/8)
X+ 1/4 = -5/8
X = -5/8 - 2/8
X= -7/8
Solve the equation 2 = -6 – 20x for x.
Answer:
x = - 2/5
Step-by-step explanation:
1.) add six on both sides, the six on the right will cancel out
2.) divide both sides by -20
3.) this will cancel the -20 on the right out which will give your answer for x on the left side
therefore, x should equal - 2 / 5 once simplified
What is the measure of
a) 66°
b) 33°
c) 228°
d) 114°
Answer:
the answer is D your welcome
Find the slope of (3,-9) (-4, 5)
Answer:
Check pdf
Step-by-step explanation:
On the bookshelf there are 16 paper bags and 20 hardback books what is the ratio of the hardbacks to paperbacks
Please help me haha:)
Answer:
I think it is 117 because 27 plus 66=93 so v+t is 90 plus 27 so 117
Step-by-step explanation:
Michael takes a sip of water every 20 minutes while playing soccer. He took his first sip at 3:05. When did he take his sixth sip?
Answer:
Michael took his 6th sip at 4 : 05
Step-by-step explanation:
Duration in which Michael takes a sip of water = 20 minutes
Therefore, he will take his sixth sip after (20 × 6) = 120 minutes Or after 2 hours
If he takes first sip of water at 3 : 05
Then he will take his sixth sip at ( 3 : 05 + 2 : 00)
Time at his sixth sip = 5 : 05
. CDEF is a trapezium
. ABCF is a rectangle
. BD = 9cm
. AB = 6cm
. EF = 3cm
. perimeter of ABCF = 20cm
9514 1404 393
Answer:
24 cm²
Step-by-step explanation:
To find the area of the trapezium, we must know the length CD. That means we must know the length BC. Fortunately, the perimeter of ABCF is given, so we have ...
P = 2(AB +BC)
BC = (P/2) -AB = (20 cm)/2 - 6 cm = 4 cm
Then CD is ...
CD = BD -BC = 9 cm -4 cm = 5 cm
The area of the trapezium is given by the formula ...
A = (1/2)(b1 +b2)h
A = (1/2)(5 cm + 3 cm)(6 cm) = 24 cm²
The area of trapezium CDEF is 24 cm².
pls help me with this question
Answer:
Step-by-step explanation:
3x and 8x
25 points to 50 points find the percent of change
Answer:
The percent of change 200%.
Hope that helps！
Step-by-step explanation:
Answer:
Its a 200% change i believe, hope you have a nice day!
What is the equation of the line with a slope of 2 through (-4, 6) in point-slope form?
O y = 2x + 14
Oy-6 = 2 (x +4)
Oy= 2x – 14
Oy+6 = 2 (x – 4)
Answer:
y - 6 = 2(x + 4)
Step-by-step explanation:
Point slope form is y - [tex]y_{1}[/tex] = m (x - [tex]x_{1}[/tex]).
[tex]x_{1}[/tex] and [tex]y_{1}[/tex] are the points that they give you in the problem, which is (-4, 6), and m is the slope, which is 2.
When you plug everything in, you should get
y - 6 = 2(x + 4).
Solve the system of linear equations. 2x + 6y = -3 2x + 6y = 0 Ο Α (0, 2) infinitely many solutions C (9,7) no solution
Answer:
Step-by-step explanation:
-3 = 2x+6y
2x+6y = 0
By transitivity, -3 = 0, a contradiction. No solution.
If you graph the lines, you will see they are parallel, therefore never intersect.
FOURTY POINTS please help with linear
Answer:
y=x is the equation also represents that relationship.
Answer:
[tex]y=x^{2}[/tex]
Step-by-step explanation:
This is a quadratic function. 2x2=4, (-2)x(-2)=4, (-1)x(-1)=1, and 1x1=1. So, the function represented by the graph is y=[tex]x^{2}[/tex]
40+40×0+1
a) 1
b)41
c)82
??
Answer:
the law of bodmas multiplication first so
40+(40*0)+1
40+1
41
two equialent ration of 3:8
Answer:
1/2 3/4 5/6
Step-by-step explanation:
56565476544356754345676543265432
Answer:
6/16
Step-by-step explanation: