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3 years ago

Need help I need to show my work also

Mathematics

2 answers:

avanturin [10]3 years ago

8 0

Answer:

The answer is No solution

Step-by-step explanation:

Solve 3x+ -1/3y = 20 for x:

3x+ −1/3y+1/3y=20+1/3y(Add 1/3y to both sides)

3x=1/3y+20

$3=\frac{1}{3}\frac{}{} y\frac{+20}{3}$ Divide both sides by 3

x $=\frac{1}{9} y +\frac{20}{3}$

Substitute 1/9y+20/3 for x in−18x+2y=−30

−18x+2y=−30

-18 $(\frac{1}{9}y +\frac{20}{3} +2y=-30$ )

−120=−30 (Simplify both sides of the equation)

−120+120=−30+120 (Add 120 to both sides)

0=90

Scorpion4ik [409]3 years ago

5 0

-15x + 5/3y = -10
5/3y = 15x - 10
y = 9x - 6

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HOW MANY GROUPS OF 10 ML ARE IN 1 LITER

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Well there is 1000ml in 1l
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If the graphs of f(x) = 2x + 3 and g(x) = 3(b)x intersect only once, which is a possible value of b? A) 1.7 B) 17 C) 2 D) 1 2

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Step-by-step explanation:

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a man uses 60 litre of petrol for a journey of 750 km how many litres will be used for a journey of 350 km

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Answer:

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The surface area of a cylinder is 432 pi yd2. The height of the cylinder is five times the radius. What is the diameter of the c

GrogVix [38]

Since the surface area of this cylinder is $432\pi \;yd^2$ , its diameter is equal to 12 yards.

<h3>How to calculate surface area.</h3>

Mathematically, the surface area (SA) of a cylinder is given by this formula:

$S.A = 2\pi rh + 2\pi r^2$

Where:

h is the height.

r is the radius.

Given the following data:

Surface area of cylinder = $432\pi \;yd^2$

Height = 5r.

Substituting the given parameters into the formula, we have;

$432\pi = 2\pi r(5r) + 2\pi r^2\\\\432\pi = 2\pi 5r^2 + 2\pi r^2\\\\216=5r^2+r^2\\\\216=6r^2\\\\r^2=36\\\\r=\sqrt{36}$

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Read more on surface area here: brainly.com/question/21367171

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3 years ago

17/20 equals t plus -13/20 solve for t

docker41 [41]

The value of t is 3/2 or 1.5

Step-by-step explanation:

The given expression is 17/20 equals t plus -13/20.

Changing it into an equation form :

⇒ t + (-13/20) = 17/20

Keeping t alone on one side and constant terms to the another side,

t = (17/20) + (13/20)

Since the denominators are same, it is easy to simplify those fractions.

⇒ t = (17+13)/20

⇒ t = 30/20

⇒ t = 3/2

⇒ t = 1.5

The solution is t= 3/2 or t= 1.5

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3 years ago