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2 years ago

−6.3n =−8.19 heyy guys can you help me

Mathematics

2 answers:

swat322 years ago

3 0

Answer:

Step-by-step explanation:

miv72 [106K]2 years ago

3 0

Answer: x=1.3

Step-by-step explanation:

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3 green apples and 7 red apples

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What are the y and x intercept of 3x-5y=15

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Y-intercept: (0,-3)

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3 years ago

Simplify sin(3pi minus x)

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Answer:

sinx

Step-by-step explanation:

hello :

note :

for all x in ℝ : 1) sin(x+2π) = sinx 2) sin(π-x) = sinx

in this exercice :

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3 years ago

Louisa ran at an average speed of five miles per hour along an entire circular park path. Calvin ran along the same path in the

docker41 [41]

Answer:

15 miles

Step-by-step explanation:

Let $x$ be the miles in the circular park path, $t_{L}$ the time Louisa takes to finish and $t_{C}$ the time Calvin takes to finish both in hours.

Then $x$ , the longitude is equal to the velocity times the time used to finish. So

$x=5t_{L}$

$x=6t_{C}$

And the difference between Louisa's time and Calvin' time is 30 minutes, half an hour. So:

$t_{C}=t_{L}-0.5$

Three equations, three unknowns, the system can be solved.

Equalizing the equation with x :

$5t_{L}=6t_{C}$

In this last equation replace $t_{C}$ with the other equation and solve:

$5t_{L}=6(t_{L}-0.5)\\ 5t_{L}=6t_{L}-3\\ 3=6t_{L}-5t_{L}\\ 3=t_{L}\\ t_{L}=3$

With Louisa's time find x:

$x=5t_{L}\\ x=5(3)\\ x=15$

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2 years ago

Simplify: 6y + 5z + 8y – 3z

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$6y + 5z +8y- 3z \\
14y + 2z\\ \\
2 (7 y + z) 
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3 years ago

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