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4 years ago

S varies directly as t. if s is 20 when t is 4 then t is ____ when s is 30

Mathematics

2 answers:

Oliga [24]4 years ago

5 0

Answer:

Step-by-step explanation:

We are doing unit rate.

Unit rate is when you get the value for 1 of the variables. In this, we would want to get the value for t. We do $\frac{20}{4}=5$ to find the t value. Now we do $\frac{30}{5}=6$ to find the value of the missing t. T=6.

Hope it Helps!

Zinaida [17]4 years ago

5 0

Answer:

t is 6 I believe

Step-by-step explanation:

t=4 s=20

20/2=4/2 divide both sides by 2 to simplify it

Then you get t=2 & s=10

then multiply 10 by 3 to get 30, and you do this to both sides so 2*3= 6

so when s is 30, t is 6

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3 years ago

9 + x + 1 + 2x<br><br> Can someone help me out with this :)

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Answer:

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3 years ago

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21.2 yd

Step-by-step explanation:

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3 years ago

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suppose that two people standing 3 miles apart both see the burst from a firework display.after a period of time ,the first pers

Marrrta [24]

The fireworks display occur at 550.331 ft

The generic equation for a hyperbola provided by: is the best method for solving the problem in this instance.

$\frac{y^{2} }{b^{2} } - \frac{x^{2} }{a^{2} } = 1$ -

We presume that the y-axis is where the hyperbola's longer axis lies.

In this instance, the sound traveled a total of 1100 meters, and the value of a can be calculated as follows:

2a = 1100

a = 550ft

Given that the two people are 3 miles apart, we can calculate the value of c in feet as follows:

1 mile = 5280 feet

∴ 3 miles = 15840 ft = c

And this is how we may determine what b is worth:

$b^{2} = c^{2} - a^{2}$

$b^{2} = 15840^{2} - 550^{2}$

$b^{2} = 250603100$

Our equation is thus given by:

$\frac{y^{2} }{250603100 } - \frac{x^{2} }{550^{2} } = 1$

And for this case we want to find the value of x when y = 3ft=15840ft and solving for x we get,

$\frac{15840^{2} }{250603100 } - \frac{x^{2} }{550^{2} } = 1$

$\frac{15840^{2} }{250603100 } - 1 = \frac{x^{2} }{550^{2} }$

$1.001- 1 = \frac{x^{2} }{550^{2} }$

$0.001 = \frac{x^{2} }{550^{2} }$

$302865.145= {x^{2}$

x = 550.331 ft.

The fireworks display occur at 550.331 ft.

Learn more about hyperbola here :

brainly.com/question/14307125

#SPJ1

8 0

2 years ago

Please help me please help me

Lostsunrise [7]

Answer:

largest 4 digit number × largest 3 digit number

=9999 × 999

(10000-1)×(1000-1) = (a-b)(c-b)= ac-ab-bc+b^2

10000000-10000-1000+1 = 9989001

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3 years ago