All categories

3 years ago

19/11.4 Show your work please

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

3 0

Answer:???

Step-by-step explanation:

Whats the question

You might be interested in

By visual inspection, determine the best-fitting regression model for the data plot below.

vichka [17]

Answer:

linear

Step-by-step explanation:

5 0

4 years ago

On a cold day, hailstones fall with a velocity of 2i − 6k m s−1 . If a cyclist travels through the hail at 10i m s−1 , what is t

Paraphin [41]

Answer:

The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

Step-by-step explanation:

Given : On a cold day, hailstones fall with a velocity of $2\hat{i}-6\hat{k}\text{ m/s}$ . If a cyclist travels through the hail at $10\hat{i} \text{ m/s}$ .

To find : What is the velocity of the hail relative to the cyclist and At what angle are the hailstones falling relative to the cyclist?

Solution :

The velocity of the hailstone falls is $V_h=2\hat{i}-6\hat{k}\text{ m/s}$

The velocity of the cyclist travels through the hail is $V_c=10\hat{i} \text{ m/s}$

The velocity of the hail relative to the cyclist is given by,

$V_{hc}=V_h-V_c$

Substitute the value in the formula,

$V_{hc}=2\hat{i}-6\hat{k}-10\hat{i}$

$V_{hc}=-8\hat{i}-6\hat{k}$

So, The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

Now, The angle of hails falling relative to the cyclist is given by

$\theta = \tan^{-1}(\frac{-6}{-8})$

$\theta = \tan^{-1}(\frac{3}{4})$

$\theta = 36.86^\circ$

So, The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

4 0

4 years ago

A store is having a sale where movies are 40% off their original price. A movie is on sale for $26.00. What was the original pri

slega [8]

Answer:

Step-by-step explanation:

26/40%=65

3 0

3 years ago

Find (f+g)(x). f(x) = 1 - x g(x) = x^2 + 2x-5

Romashka [77]

Answer:

(f + g)(x) = x² + x - 4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients
Functions
Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 1 - x

g(x) = x² + 2x - 5

(f + g)(x) is f(x) + g(x)

Step 2: Solve

Substitute in functions: (f + g)(x) = (1 - x) + (x² + 2x - 5)
Combine like terms (x): (f + g)(x) = x² + x - 5 + 1
Combine like terms: (f + g)(x) = x² + x - 4

6 0

3 years ago

Its complete solution and answer is 45

lora16 [44]

Answer:

Step-by-step explanation:

6 0

3 years ago