How to plot the point (3,-7) on the coordinate plane
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Y is up and down, vertically & x is horizontal.
There is positive and negatives in coordinates.
The way the negatives and positives are positioned is like this:
The left hand side of the 'x axis' is negative.
The right hand side of the 'x axis' is positive.
The top part of the 'y axis' is positive.
The bottom part of the 'y axis' is negative.
Whilst plotting, you always start with the x axis. Considering 3 is a positive, you plot it on the right hand side. With your finger, mark out where the 3 is, and slide it down until you get to -7 on the plane.
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Three sides of a triangular field are of lengths 10 m, 20 m and 15 m respectively. Find the cost of fencing the field at the rate of Rs 25 per m.
diagram 7(i) shows a square with area of 64cm² formed using a string.The string is cut to form another two congruent rectangles with length 5 cm, as shown in diagram 7(ii).Calculate the area , one of the rectangles.If u guys can help me solve this, u guys really save my life.I need to submit tomorrow morning.
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Weight of gold will be 0.1x grams, weight of lead will be 0.15x grams.
Let the weight of the second alloy will be y grams.
Weight of gold will be 0.3y grams, weight of lead will be 0.4y grams.
Summarizing:
0.1x+0.3y=60 - gold
0.15x+0.4y=88 - lead
0.1x+0.3y=60 * 10
0.15x+0.4y=88 * 100
x+3y=600 * 15
15x+40y=8800
15x+45y=9000
15x+40y=8800
15x+45y=9000 /15
45y-40y=9000-8800
x+3y=600
5y=200
x+3y=600
y=40
y=40
x=600-3*40=480
y=40
x=480
↑The answers.
A. √2/2
B. 4
C. √6/2
D. √2
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Answer:
Step-by-step explanation:
the answer is option D
WHEN YOU SUBSTITUTE THE VALUES YOU WILL GET IT............
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The value of x is, -3.
What does the X in a function mean?
- A function defines one variable in terms of another.
- The statement "y is a function of x" (denoted y = y(x)) means that y varies according to whatever value x takes on.
- A causal relationship is often implied (i.e. "x causes y"), but does not *necessarily* exist.
What is the value for X?
- Generally, the algebraic expression should be any one of the forms such as addition, subtraction, multiplication and division.
- To find the value of x, bring the variable to the left side and bring all the remaining values to the right side.
- Simplify the values to find the result.
How are the functions y x?
- The phrase "y is a function of x" means that the value of y depends upon the value of x, so: y can be written in terms of x (e.g. y = 3x ).
- If f(x) = 3x, and y is a function of x (i.e. y = f(x) ), then the value of y when x is 4 is f(4), which is found by replacing x"s by 4"s .
Learn more about functions here:
#SPJ2
Answer:
-3
Step-by-step explanation:
Edu 2020
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1. isolate variable
2. divide by coeficient of variable
3. celebrate because you found the answer
remember you can do anything to an equation as long as you do it to both sides
distributive propoerty
a(b+c)=ab+ac
2(x+4)-10=12
distribute the 2 to (x+4)
2(x+4)=2x+8
now we have
2x+8-10=12
add
2x-2=12
add 2 to both sides
2x+2-2=12+2
2x+0=14
2x=14
divide both sides by 2
2/2x=14/2
1x=7
x=7
Hi there!
To solve, let's rewrite this equation.
Step 1) Simplify both sides of the equation.
(Distribute)
(Combine Like Terms)
Step 2) Add 2 to both sides.
Step 3) Divide both sides by 2.
Final Answer -
Hope this helps!
Message me if you need anything else, I'd be happy to help you! :D
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then cost price of garden table is x+35
total cost = x + x+35
985 = 2x +35
985 -35÷2 =x
425 =×
then the total cost of bench is 425 and garden is 460