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3 years ago

If 10x+3y=38 and -2x+13y=50 what is the value of -x+2y

Mathematics

1 answer:

amid [387]3 years ago

5 0

Answer:101/17

Step-by-step explanation:

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The product of 5 and a number y

zysi [14]

Answer: 5y

Step-by-step explanation:

Product means the multiplication of, so taking the product of 5 and y we simply have;

5*y=5y

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3 years ago

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In the worst storm in Sunnyville history, 6 inches of rain fell in 8 hours. What was the amount of rainfall per hour?

Delvig [45]

Answer:

0.75 cm of rain per hour

Step-by-step explanation:

I know if the cm part made sense but okay

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3 years ago

Given the acceleration, initial velocity, and initial position of a body moving along a coordinate line at time t, find the body

nika2105 [10]

Answer:

The position at time t is $s(t) = 8t^2 - 14t -8$

Step-by-step explanation:

From the question we are told that

The acceleration is $a = 16$

The velocity at t = 0 is $v(0) = -14$

The position at time t = 0 is $s(0) = -8$

Generally acceleration is mathematically represented as

$a(t) = \frac{d v}{dt }$

=> $\frac{dv}{dt} = 16$

=> $dv = 16 dt$

integrating both sides we have

$\int\limits dv = \int\limits16 dt$

=> $v(t) = 16 t + c$

Now at t = 0

$v(0) = 16 * 0 +c = -14$

=> $c = -14$

$v(t) = 16 t -14$

Generally the position of the body is mathematically represented as

$s(t) = \int\limits v(t)dt$

$s(t) = \int\limits 16t - 14 dt$

$s(t) = 16 \frac{t^2}{2} - 14t + C$

Now at t = 0

$s(0) = 16 \frac{0^2}{2} - 14(0) + C = -8$

=> $C = -8$

$s(t) = 8t^2 - 14t -8$

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3 years ago

Find the number of real number solutions for the equation.

daser333 [38]

Determinant = b² - 4ac = (-10)² + 4*1*25 = 100 - 100 = 0

So it has 1 solution.
Answer is D

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3 years ago

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PLEASE HELP ASAP 25 points.

prohojiy [21]

Answer:

d, no solutions

Step-by-step explanation:

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3 years ago

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