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german
4 years ago
11

" align="absmiddle" class="latex-formula"> x -y = -3 what is this in standard form
Mathematics
1 answer:
Sati [7]4 years ago
3 0

There are a few different standard forms for a line, let's assume we're after


ax + by = c


Let's write


\frac 3{10} x - y = -3


That's already in standard form and we could stop. Or we could multiply by 10.


3 x - 10 y = -30


We can bring the constant to the same side; some people prefer that as standard form:


3x - 10 y + 30 = 0


There's also slope intercept form,


y = \frac 3 {10} x + 3


Plenty more forms where these comes from.



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1000 cylindrical metal bars of length 120 m and diameter 0.2 m , as shown below, are to be used in constructing a bridge. He bar
Troyanec [42]

Answer:

the number of of litres of paint to the nearest litre for 1000 bars is 1 litre

Step-by-step explanation:

Given that:

1000 cylindrical metal bars have :

a length of 120 m

and a diameter of  0.2 m

The volume of the cylindrical bar can be calculated by the formula:

V= \pi r^2 h

where ;

radius   r=\dfrac{d}{2}

r = \dfrac{0.2}{2}

r = 0.1 m

the length of the cylindrical metal bars is equal to the height of the metal bar = 120 m

Thus the volume can now be calculated as follows:

V= \pi* 0.1^2*120

V = 3.77 m³

So; from the given information.

One litre of paint will cover 4m³

and we want to find how many litres of paint will be used for the 1000 cylindrical bars.

If        1 litre = 4m³

Then  x litre = 3.77 m³

4x = 1 × 3.77

x = \dfrac{1*3.77 }{4}

x = 0.9425 litres

x = 1 litres to the nearest litres.

Thus ; the number of of litres of paint to the nearest litre for 1000 bars is 1 litre

4 0
4 years ago
Victoria earns $255 by working 20 hours each week
Alborosie
She would make $98.50 in 10 hours.

Explanation :
255/20 = 12.75
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6 0
3 years ago
A total of
Arte-miy333 [17]
Let x equal the number of adult tickets sold. 

X + 3X=512
(I put 3x because we know the students sold 3 times as many). 
Solve for X. 

X+3X=512
4X=512
4X/4=512/4
X=128
3 0
4 years ago
How do you write a word form for 4.293
pychu [463]
Four and two hundred ninety-three thousandths
5 0
3 years ago
Read 2 more answers
- Which values are equivalent to b in the equation below? 62 = 12 Select all that apply. A. -6 B. 6 C.-V12 D. 112 E. -144 F. 144
Natasha2012 [34]

Answer:

I think it is D but I am not 100% sure

Step-by-step explanation:

7 0
3 years ago
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