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3 years ago

Solve for j if aj+k=v

Mathematics

1 answer:

professor190 [17]3 years ago

7 0

Answer:

j=v-k/a

Step-by-step explanation:

It's like order of operations backwards. So first, you would get rid of the k, by subtracting it from both sides. Then, to isolate j you would divide both sides by a.

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In a video game, a bird is flung on a sling shot and follows a parabolic path. The path of the bird can be modeled by the equati

Novay_Z [31]

Answer:

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

Step-by-step explanation:

we have

$h=-16t^2+55t+4$

This is a vertical parabola open downward

The vertex represent a maximum

where

h is the height of the bird

t is the amount of time, in seconds, the bird had been in the air

For h=40 ft

substitute in the quadratic equation

$40=-16t^2+55t+4$

$-16t^2+55t+4-40=0$

$-16t^2+55t-36=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^2+55t-36=0$

$a=-16\\b=55\\c=-36$

substitute in the formula

$x=\frac{-55\pm\sqrt{55^{2}-4(-16)(-36)}} {2(-16)}$

$x=\frac{-55\pm\sqrt{721}} {-32}$

$x=\frac{-55+\sqrt{721}} {-32}=0.88\ sec$

$x=\frac{-55-\sqrt{721}} {-32}=2.56\ sec$

therefore

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

3 0

3 years ago

Which composite figure has the greatest surface area

Bumek [7]

Answer:

sphere...

Step-by-step explanation:

because...

just like if we increase the no. of faces of composite figures ...

surface area is increased ...

so no. of faces is infinite in sphere...

logically sphere have the greatest surface area

6 0

3 years ago

Read 2 more answers

The sum of a number y and 9 is greater than 10

astra-53 [7]

Answer:

y</= 2

Step-by-step explanation:

9 + 1 = 10

9 + 2 < 10

y = anything < 2

4 0

4 years ago

How to turn an a equation from standard form into vertex form

alekssr [168]

Is this a real question?

6 0

3 years ago

Given f(x)=3x-1, solve for x when f(x)=-7.

ddd [48]

Answer:

x = -2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 3x - 1

f(x) = -7

Step 2: Solve for x

Substitute: -7 = 3x - 1
Isolate x term: -6 = 3x
Isolate x: -2 = x
Rewrite: x = -2

8 0

3 years ago