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3 years ago

Y= -2x-21 determine the intercepts of the line

Mathematics

2 answers:

puteri [66]3 years ago

8 0

Answer:

The y-intercept is -21. The x-intercept is -10.5 or $-\frac{21}{2}$ .

(0, -21) and (-10.5, 0)

Step-by-step explanation:

To find the y-intercept, you would plug in 0 for x.

y = -2x - 21

y = -2(0) - 21

y = 0 - 21

y = -21

The y-intercept is -21.

To find the x-intercept, you would plug in 0 for y.

y = -2x - 21

0 = -2x - 21

2x = -21

x = -21/2

x = -10.5 or $-\frac{21}{2}$

The x-intercept is -10.5 or $-\frac{21}{2}$ .

mixas84 [53]3 years ago

6 0

Answer:

x(-10.5,0)

y.(0,-21)

Step-by-step explanation:

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Calculate the area of #21

Fynjy0 [20]

Use pythagoras to find the 3rd length of the triangle:
Square root of 8.5^2-7^2= 4.82 yd
Find the area of the trapezium:
((2+(2+4.82))x7)/2
= 30.87 yd^2
To find the area of the parallelogram you just take away the area of the triangle from the area of the trapezium:
Area of triangle is (4.82x7)/2= 16.87yd^2

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2 years ago

Lucas wants to use the box with the greatest volume. Which shipping box should he use? Box_

serious [3.7K]

Answer:

He will use the D box because it has a volume of

$27 {ft}^{3}$

Step-by-step explanation:

$a)v = whl \\ = 1 \times 5 \times 3 \\ = 15 {ft}^{3}$

$b) \: v = whl \\ = 3 \times 4 \times 2 \\ = 24 {ft}^{3}$

$c) \: v = \: whl\\ = 2 \times 7 \times 1 \\ = 14 {ft}^{3}$

$d) \: v = whl \\ = 3 \times 3 \times 3 \\ = 27 {ft}^{3}$

hope this helps

brainliest appreciated

good luck! have a nice day!!

8 0

3 years ago

Read 2 more answers

HELP PLS Match each graph with the logarithmic function it represents

SIZIF [17.4K]

Each graph has been matched with the logarithmic function it represents as follows:

f(x) = 3 - 4In (x-2) = graph 3.

f(x) = 3 - Inx = graph 1.

f(x) = In(x + 1) = graph 4.

f(x) = 2In(x + 3) = graph 2.

<h3>What is a function?</h3>

A function can be defined as a mathematical expression which is used to define and represent the relationship that exists between two or more variables.

<h3>The types of function.</h3>

In Mathematics, there are different types of functions and these include the following;

Periodic function

Inverse function

Modulus function

Signum function

Piece-wise defined function.

Logarithm function

<h3>What is a logarithm function?</h3>

A logarithm function can be defined as a type of function that represents the inverse of an exponential function. Mathematically, a logarithm function is written as follows:

y = logₐₓ

In this exercise, you're required to match each graph with the logarithmic function it represents as shown in the image attached below:

f(x) = 3 - 4In (x-2) = graph 3.

f(x) = 3 - Inx = graph 1.

f(x) = In(x + 1) = graph 4.

f(x) = 2In(x + 3) = graph 2.

Read more on logarithm function here: brainly.com/question/13473114

#SPJ1

3 0

2 years ago

A scooter was bought at Rs 42,000. its value depreciated at the rate of 8% per annum. find its value after one year

Alona [7]

Answer:

Rs 38,640

Step-by-step explanation:

Pay attention:

$A = P(1+r/100)^n$

The principle (p) : Rs 42,000

Rate of interest (r) : 8%

Time (n) : 1 years

Exact Amount (a) : P(1-R/100)^n

Value:

A = 42,000(1 - 8/100)^1

A = 42,000(1 - 2/25)

A = (42,000 * 23)/25

A = 1,680 * 23

A = Rs 38,640

4 0

3 years ago

You order a new pair of running shoes from a website that offers free shipping on orders of $75 or more. Your shoes cost $69.95.

gayaneshka [121]

Answer: x > 75-69.95; you need five dollars and five cents more for free shipping ($5.05)

Step-by-step explanation: i believe this is the correct answer because as long as you have 75 dollars or more, then you will be good so that’s how i got the inequality. to find this you just subtract the amount needed (75) by the amount you have and you get your answer. oh and to be clear x represents the amount needed for free shipping. i am not sure if i understood the problem correctly so i apologize if it is incorrect. i hope this helped and good luck!

3 0

3 years ago