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3 years ago

Five notebooks cost $20. At this rate, how much would 2 notebooks cost

Mathematics

1 answer:

fenix001 [56]3 years ago

4 0

2 notebooks* ($20/ 5 notebooks)= $8.
(Note that the unit cancels out so you get the answer)

Final answer: $8~

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ABC has the points A(1,7) B(-2,2) and C(4,2) as it’s vertices

tekilochka [14]

Part 1

Using the distance formula,

$AB=\sqrt{(-2-1)^{2}+(2-7)^{2}}=\sqrt{34}\\\\BC=\sqrt{(-2-4)^{2}+(2-2)^{2}}=6\\\\AC=\sqrt{(1-4)^{2}+(7-2)^{2}}=\sqrt{34}$

So, the measure of the longest side is 6 units.

Part 2

Triangle ABD will have vertices A(1,7), B(-2, 2), and D(1,2).

We already know that $AB=\sqrt{34}$

Using the distance formula,

$AD=\sqrt{(1-1)^{2}+(7-2)^{2}}=5\\\\BD=\sqrt{(-2-1)^{2}+(2-2)^{2}}=3$

So, ABD is a scalene triangle.

Part 3

From part 2, we know that the length of side AD is 5 units.

6 0

2 years ago

What is fractions on a lineplot question 5

Ghella [55]

So, we know that

4/5n = 2/3

n = 2/3 x 5/4 . . . . .. if fraction is moved to other side of the equation the numerator and denominator will be swithced

n = 10/12 ......................... divide numerator and denominator by 2

n = 5/6

The answer is Fraction 5 over 6 hopes this help

7 0

2 years ago

If the equation of a function is y = x2 – 5, what is the output when the input is -1?

Nimfa-mama [501]

The input is the y
y = x^2 - 5
plug in what we're given
-1 = x^2 -5
add 5 to both sides
4 = x^2
take the square root of both sides
2 = x

Hope this helps :)

4 0

3 years ago

Determine if the following side lengths can create a triangle: 5, 7, 13 A. Yes B. No

Paul [167]

Answer:

Step-by-step explanation:

In order for three sides to make a triangle, if any two sides are added together, their sum should be greater than the third side:

=> 5 + 7 = 12 < 13 (DOES NOT check off the rule)

=> 7 + 13 = 20 > 5 (Checks off the rule)

=> 5 + 13 = 18 > 7 (Checks off the rule)

As shown, even though 2 of the statements check off the rule the third one does not, this means that the sides don't make a triangle.

Hope this helps!

8 0

2 years ago

Read 2 more answers

there were 20 plants sold at a store on Saturday and 30 plants sold at the store on Sunday. customers bought 5 plants each. how

pshichka [43]

Answer:

Step-by-step explanation:

20/5 = 4 customers bought plants on Saturday; 30/5 = 6 customers bought plants on Sunday. In all 4 + 6 = 10 customers bought the plants.

6 0

3 years ago