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4 years ago

Help me please and thank you !

Mathematics

1 answer:

Karo-lina-s [1.5K]4 years ago

6 0

The answer is B, f(x) = -4x
This is because all of the outcomes are the x values times -4.

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2 4/5 ÷ 3 1/2 + 1/5 = ?

Irina18 [472]

2 4/5 ÷ 3 1/2 + 1/5 = 1

explanation:

Convert the mixed numbers to improper fractions, then find the LCD and combine.

hope this helps <3

4 0

2 years ago

Find the exponential function that satisfies the given conditions: Initial value = 37, increasing at a rate of 5% per year

beks73 [17]

The required function is:

Option 3: $f(t) = 37. (1.05)^t$

Step-by-step explanation:

The initial value and rate is used to write exponential function

Here

Given

Initial value = 37

Rate = r = 5%

When the rate is 5%, the next year the quantity will be 1+0.05 = 1.05 time of the current quantity.

So,

The function can be written as:

$f(t) = 37. (1.05)^t$

For initial value, put t=0

$f(t) = 37. (1.05)^0\\f(t) = 37 * 1\\f(t) = 37$

Hence,

The required function is:

Option 3: $f(t) = 37. (1.05)^t$

Keywords: Functions, exponential functions

Learn more about functions at:

#LearnwithBrainly

4 0

3 years ago

3x-4y;x=4andy=3 evaluate the expression for the indicated values of the variables

neonofarm [45]

Step-by-step explanation:

In this problem, all we have to do is replace x and y with the values we've been given.

It can be helpful to think of 3x as 3 * x (which is the same exact thing), so I'll write it out that way.

3*x - 4*y

(replace)

3*4 - 4*3

(multiply (doing this step first because of PEMDAS))

12 - 12

(subtract)

Answer:

6 0

3 years ago

Read 2 more answers

Karl wants to rent a bike for at most $55. He can rent a bike for $7 per hour plus a $9.50 flat fee. Any portion of an hour is c

Anvisha [2.4K]

6.5 because you instantly take $9.50 away from $55. After you get that answer, you will have 45.5. Then divide 45.5 by 7 which will give you 6 and a half hours.

4 0

3 years ago

While hovering near the top of Ribbon Falls in Yosemite National Park at 1600 feet, a

ella [17]

Answer:

a)The sunglasses hit the ground at t=0 seconds

b)The maximum height h(t) = 1600feet

Step-by-step explanation:

Step(i):-

Given that the polynomial function

h(t) = -16 t² + 1600 ...(i)

Differentiating equation (i) with respective to 't' , we get

$\frac{dh}{dt} = -16(2t)+0$

Equating zero

$\frac{dh}{dt} = 0$

⇒ -32t =0

⇒ t =0

The sunglasses hit the ground at t=0 seconds

Step(ii):-

Again differentiating with respective to 't', we get

$\frac{d^{2} h}{dt^{2} } = -32(1) = -32$

The maximum height at t=0

h(t) = -16 t² + 1600

h(t) = 1600feet

4 0

3 years ago