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3 years ago

What are the Variable Terms, Coefficients, and Constants for 8r + 7 - 2r

Mathematics

1 answer:

Sav [38]3 years ago

4 0

Variable: r constant: 7 coefficient: -2 and 8

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An rock is thrown upward from a platform that is 188 feet above ground at 80 feet per second. Use the projectile formula to dete

serious [3.7K]

Answer:

6.74 s

Step-by-step explanation:

y = ½ at² + vt + h

Given a = -32, v = 80, h = 188:

y = ½ (-32) t² + (80) t + (188)

y = -16t² + 80t + 188

When y = 0:

0 = -16t² + 80t + 188

0 = 4t² − 20t − 47

Solve with quadratic formula:

t = [ -(-20) ± √((-20)² − 4(4)(-47)) ] / 2(4)

t = [ 20 ± √(400 + 752) ] / 8

t = (20 ± √1152) / 8

t > 0, so:

t = (20 + √1152) / 8

t ≈ 6.74

8 0

3 years ago

If g(x) = 2(x − 4), find the value of x if g(x) = 20. 32 12

nlexa [21]

Answer:

The value of x is $14$

Step-by-step explanation:

we have

$g(x)=2(x-4)$ ------> equation A

In this problem we have

$g(x)=20$

Substitute the value of g(x) in the equation A and solve for x

$20=2(x-4)$

Divide by $2$ both sides

$20/2=2(x-4)/2$

$10=(x-4)$

Adds $4$ both sides

$10+4=(x-4)+4$

$x=14$

6 0

3 years ago

Read 2 more answers

Pleasee help, thank you so much

dezoksy [38]

Answer:

-2

Step-by-step explanation:

Use the slope formula when given two points

Slope formula = $\frac{y_2-y_1}{x_2-x_1}$

( the x and y values are determined by the given points )

Given the points ( 0 , 5 ) and ( 1 , 3 )

Plug in the x and y values of the given points into the formula

( remember y values on top x values on bottom )

$slope=\frac{5-3}{0-1} \\5-3=2\\0-1=-1\\slope=\frac{2}{-1} =-2$

Hence, the answer is D

5 0

3 years ago

ANSWER ASAP RIGHT ANSWER = BRAINLIST 100 POINTS

ale4655 [162]

Answer:

-6.75

Hooe it helps!

Please mark brainliest

8 0

3 years ago

Read 2 more answers

What is the derivative of y with respect to x if y = 2/X4

zepelin [54]

You're correct, the answer is C.

Given any function of the form $y=x^n$ , then the derivative of y with respect to x ( $\frac{dy}{dx}$ ) is written as:
$\frac{dy}{dx}=nx^n^-^1$

In which $n$ is any constant, this is called the power rule for differentiation.

For this example we have $y= \frac{2}{x^4}$ , first lets get rid of the quotient and write the expression in the form $y=x^n$ :
$y= \frac{2}{x^4} =2x^-^4$

Now we can directly apply the rule stated at the beginning (in which $n=-4$ ):
$\frac{dy}{dx}=(2)(-4)x^{-4-1}=-8 x^{-5}= -\frac{8}{x^5}$

Note that whenever we differentiate a function, we simply "ignore" the constants (we take them out of the derivative).

6 0

3 years ago