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BabaBlast [244]
3 years ago
8

Elaine is making a flower garden with rows of flowers. The garden is 2020 yards long. She wants a total of 77 rows of flowers th

at are all the same width. Which calculation should Elaine use to decide how wide to make each row?
Mathematics
2 answers:
natulia [17]3 years ago
6 0

Answer:

<em>Elaine should use the calculation w = \frac{L}{r}=\frac{2020}{77}yards  to find the width of each row of flowers</em>

Step-by-step explanation:

Total length of garden , L= 2020 yards

Number of rows of flowers to be accommodated , r= 77 rows

Let the width of each row be w yards then

L=w\times r

=>w = \frac{L}{r}=\frac{2020}{77}yards=26.234 yards

Thus Elaine should use the calculation w = \frac{L}{r}=\frac{2020}{77}yards  to find the width of each row of flowers

aleksandrvk [35]3 years ago
3 0
Wouldn't she divide 2020 and 77?
 
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Write 342 to 1 significant figure​
Rufina [12.5K]

Answer:

300

Step-by-step explanation:

A significant figure is the most important (largest) number you can round it to.

As it wants 1 significant figure, you count 1 to the left and round the 4 down.

Hope this helps :)

5 0
3 years ago
Solve by the linear combination method (with or without multiplication) <br> 2x+3y= -17, 5x+2y = -4
Amiraneli [1.4K]
2x+3y= -17 
5x+2y= -4
You must cancel either the x or y out to solve so i'm going to cancel the x. 
-5(2x+3y= -17)
2(5x+2y= -4)
This simplifies to: 
-15x -15y=85
15x+4y= -8
The -15x and 15x cancel out leaving you: 
-15y=85 
4y= -8
You add them top numbers by the bottom and get: 
-11y=77
Then divide by -11 to get y by its self.
y= -7
Now that you know what y is just plug it in to either original problem. I will use the second one. 
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5x -14 = -4
5x = 10 
x = 2
So the answer is (2,-7) or x=2 and y=-7
6 0
3 years ago
Read 2 more answers
S+2t=6. 3s-2t=2<br> Using elimination
Ludmilka [50]
For the first one, I will solve for t.
s + 2t = 6, first we isolate the t variable,
2t = -s + 6, divide both sides by 2,
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Here's the second one,
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6 0
3 years ago
How do you write this in numerical expression and in a answer statement
-Dominant- [34]
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4 0
3 years ago
Suppose m is in the line given by the equation 6x-3y=7, and suppose n is the line perpendicular to m and passing Nd through the
stealth61 [152]

Answer:

The x co-ordinate o intersection of line k and n is \frac{8}{11}

Step-by-step explanation:

Given as :

The equation of line m is 6 x - 3 y = 7

So, in the standard form , line equation is

y = a x + c  , where a is the slope

So,  6 x - 3 y = 7 can be written as

3 y = 6 x - 7

or,  y = 2 x - \frac{7}{3}       ........1

So, slope of this line = a = 2

Now, The line n is perpendicular to line m and passing through line ( 6 , 2 )

So, Slope of line n = b

For , perpendicular lines , products of slope = - 1

Or, a × b = -1

∴  b = - \frac{1}{a}

I.e b = - \frac{1}{2}

So,equation of line n with slope b and passing through line ( 6 , 2 ) is

y - y_1 = b ( x - x_1 )

or, y - 2 =  - \frac{1}{2} ( x - 6 )

or, 2 × ( y - 2 ) =  - 1 ( x - 6 )

or, 2 y - 4 = - x + 6

or, x + 2 y -10 = 0          ........2

Again, equation of line k with slope 5 and y intercept = 1

For y intercept , x coordinate = 0

y = c x + c

or, 1 = c× ( 0 ) + c

Or, c = 1

Or, equation of line k is

y = 5 x + 1           ..........3

Now intersection of line k and n is

put the value of y from eq 3 into eq 2

I.e x + 2 × (  5 x + 1  )-10 = 0  

Or, x + 10 x + 2 - 10 = 0

or, 11 x - 8 = 0

or 11 x = 8

∴  x = \frac{8}{11}

Hence The x co-ordinate o intersection of line k and n is \frac{8}{11}  Answer

4 0
3 years ago
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