Ask question

Ask question

All categories

3 years ago

14

Science pls answer I give brainliest

1 answer:

elena-14-01-66 [18.8K]3 years ago

4 0

Answer:

b

Step-by-step explanation:

because air is cooler in the mountains so it'll be cold not humid

You might be interested in

A school's math and science clubs are selling laundry soap bars to raise money to buy new calculators. The profit for each sold

Stolb23 [73]

i think it would be $16.24

3 0

2 years ago

Read 2 more answers

22 + 14x = 14x + 22 <br> Is this Commutative, Distributive, or Associative

oksano4ka [1.4K]

Answer:

I think the answer is Associative.

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

assume x and y are both differentiable functions of t. find dx/dt given x=-1 and dy/dt=8 for the relation: 4x^2+3y^3=28

melomori [17]

Given:

x and y are both differentiable functions of t.

$4x^2+3y^3=28$

$x=-1\text{ and }\dfrac{dy}{dt}=8$

To find:

The value of $\dfrac{dx}{dt}$ .

Solution:

We have,

$4x^2+3y^3=28$ ...(i)

At x=-1,

$4(-1)^2+3y^3=28$

$4+3y^3=28$

$3y^3=28-4$

$3y^3=24$

Divide both sides by 3.

$y^3=8$

Taking cube root on both sides.

$y=2$

So, y=2 at x=-1.

Differentiate (i) with respect to t.

$4(2x\dfrac{dx}{dt})+3(3y^2\dfrac{dy}{dt})=0$

Putting x=-1, y=2 and $\dfrac{dy}{dt}=8$ , we get

$4(2(-1)\dfrac{dx}{dt})+3(3(2)^28)=0$

$-8\dfrac{dx}{dt}+9(4)(8)=0$

$-8(\dfrac{dx}{dt}-9(4))=0$

Divide both sides by -8.

$\dfrac{dx}{dt}-36=0$

$\dfrac{dx}{dt}=36$

Therefore, the value of $4x^2+3y^3=28$ is 36.

6 0

2 years ago

Solve the equations below:

Lelu [443]

<h2><em><u>Answ</u></em><em><u>er</u></em><em><u>:</u></em><em><u>-</u></em></h2>

<h3>1.) 3x + 2 = 15</h3>

➪ 3x = 15 - 2

➪ 3x = 13

★ $\large\pink{x = \sf{\dfrac{13}{3}}}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

<h3>2.) 5x - 8 = 52</h3>

➪ 5x = 52 + 8

➪ 5x = 60

➪ x = $\sf\dfrac{60}{5}$

★ $\large\pink{x = 12}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

<h3>3.) 2(x+1) = 14</h3>

➪ 2x + 2 = 14

➪ 2x = 14 - 2

➪ 2x = 12

➪ x = $\sf\dfrac{12}{2}$

★ $\large\pink{x = 6}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

<h3>4.) 1/4 x + 6 = 12</h3>

➪ $\sf\dfrac{1}{4} \times x = 12 - 6$

➪ $\sf\dfrac{1}{4} \times x = 6$

➪ $\sf 1 \times x = 6 \times 4$

★ $\large\pink{x = 24}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

<h3>5.) 1/5 + 2y = 2/5</h3>

➪ $\sf 2y = \dfrac{2}{5} - \dfrac{1}{5}$

➪ $\sf 2y = \dfrac{2-1}{5}$

➪ $\sf 2y = \dfrac{1}{5}$

➪ $\sf y = \dfrac{1}{5 \times 2}$

★ $\large\pink{y = \dfrac{1}{10}}$

5 0

2 years ago

Given the functionf(x)=0.5(3)^x, what is value of f-1(7)

gogolik [260]

Ok, a fun hack

if f⁻¹(a)=b then f(b)=a

so if f⁻¹(7)=b then f(b)=7

to find b, find x such that f(x)=7

7=0.5(3)^x
times both sides by 2 (or divide both sides by 0.5)
14=3^x
take log₃ of both sides
$log_3(14)=x$

$f^{-1}(7)=log_3(13)$

4 0

3 years ago