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2 years ago

(GIVING BRAINLIEST!!)

Mathematics

1 answer:

AysviL [449]2 years ago

3 0

Answer:

1 3/10

Step-by-step explanation:

Find the common denominator.

6/15 times 2

12/30

3/10 times 3

9/30

3/5 times 6

18/30

Add.

12/30 + 9/30 + 18/30 = 39/30

Simplify

13/10 = 1 3/10

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Eight randomly selected customers at a local grocery store spent the following amounts on groceries in a single visit: $216, $18

chubhunter [2.5K]

Answer:

a) 910

b) 828100

c) 144320

Step-by-step explanation:

a. ∑y

This is the sum of all values of y. So

$\sum y = 216 + 184 + 35 + 92 + 142 + 175 + 9 + 57 = 910$

b. (∑y)^2

This is the square of the sum, so the square of 910, that we found in the previous item.

910² = 828100

c. ∑y^2

This is the sum of the squares of each amount spent. So

$\sum y^2 = 216^2 + 184^2 + 35^2 + 92^2 + 142^2 + 175^2 + 9^2 + 57^2 = 144320$

8 0

2 years ago

Okay whos gonna help me ???

Naddik [55]

Answer:

I will

Step-by-step explanation:

Thats yeah

4 0

2 years ago

Select the correct answer. The velocity of a train relative to the ground is represented by the distance from A to B in the diag

Alina [70]

The answer is A. 21.14 m/s

8 0

2 years ago

Read 2 more answers

PLEASE EXPLAIN BECAUSE A GIRL IS COMPLETELY LOST HERE

Afina-wow [57]

Hello!

To find the value of b, we need to use the Law of Sines. The law states,

sin A / a = sin B / b = sin C / c.

We are given these values: sin A = 55 degrees, side a = 8 cm, sin C = 82 degrees.

Since angle B is not given, we have to find it ourselves. We can find the measure of angle B by subtracting both the given angle values from 180 degrees because every triangle is equal to 180 degrees.

180 - 55 - 82 = 43 | The measure of sin B = 43 degrees.

sin (55) / 8 = sin (43) / b (multiply both sides by b)

0.10239... · b = 0.68199... (divide both sides by 0.10239...)

c = 6.6607...

The measure of side b is equal to about 6.7 centimeters.

3 0

2 years ago

Read 2 more answers

Use algebraic means to show that x^2 + y^2 = 8 is not a function. Explain your process.

11Alexandr11 [23.1K]

Answer:

For a single value of x function has more than one corresponding value of y which satisfies the equation.

Step-by-step explanation:

Function: A relationship between a set of inputs and a set of possible outputs, where exactly one output is associated with each input.

It means for an equation to represent a function any single value of x there should be only one corresponding value of y which satisfies the equation.

Now consider the given equation.

$x^2 + y^2 = 8$

If we put x=0 then we get two value of y i.e $\sqrt8$ and $-\sqrt8$ which satisfy the equation and therefore the equation is not a function.

5 0

3 years ago