MATHEMATICS MIDDLE SCHOOL

Find the values of x and y in the diagram and show work please it's for geometry class

Answers

Answer 1

Answer:

Answer:

x = 10

y = 70

Step-by-step explanation:

By using the vertical angles theorem we know that x+ y +10 = 90, also simplified to x + y = 80

and 2x + y = 90

By using the substitution method on x + y = 80, it will be y = -x + 80

When you put into the equation 2x + y = 90 you will get 2x -x +80 = 90

Then it will simplify to x = 10

After that plug 10 into x + y = 80 to 10 + y = 80 and get y = 70

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Explain how to find 40 times 80 using mental math

Answers

Using mental math's, the product of 40 times 80 is: 120

How to find the product of numbers?

We want to find the number product given as:

40 times 80

Now, this can be expressed as:

40 * 80

This means a product or multiplication of 40 and 80.

We can break the numbers down as:

40 = 4 * 10

80 = 8 * 10

Thus, we have:

(4 * 10) + (8 * 10)

= 10(4 + 8)

= 10 * 12

= 120

Read more about Number products at: brainly.com/question/10873737

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First you can use simple multiplication. Take out the zeroes from 40 and 80. You get 4 and 8. 4 multipled by 8 is 32. so that means that 80 times 40 is 320

I am confused help me

Answers

2x+3=17
subtract 3 from both sides
2x=14
divide both sides by 2 and get
x=7

you need to subtract the 3. when you add a 3 you end up with 6. WHAT YOU DO TO ONE SIDE, YOU MUST DO TO THE OTHER.

Formar for solving an arithmetic progression

Answers

Step-by-step explanation:

$a_(n) = a + (n - 1) * d$

Answer:

Step-by-step explanation: a + ( n- 1 )d

where,

'a' means first term

'n' means number

'd' means common difference

A triangle has a height of 18 centimeters and a base of 3.5 centimeters. What is the area of the triangle?

Answers

Answer:

31.5 cm^2

Step-by-step explanation:

The formula for the area of a triangle is 1/2 x (b x h)

in the provided question -

b = 3.5 cm

h = 18cm

thus the area of the triangle will be -

1/2 x (3.5 x 18)

= 1/2 x 63

= 31.5 cm^2

Answers

AAAA
BBAB
ABAB
ABBB
BABA
(I can choose multiple)

Answers

Answer:

BBAB, ABAB, and BABA

Step-by-step explanation:

Use the probability/combination theorem.

The surface area of a game cube is 384 square millimeters. how long is each edge of the cube?

Answers

$a\ \rightarrow\ the\ long\ of\ each\ edge\ of\ the\ cube\nthe\ surface\ area\ of\ a\ game\ cube=384\ mm^2\n\n6a^2=384\ /:6\n\na^2=64\ \ \ \Rightarrow\ \ \ a=8\n\nAns.\ the\ long\ of\ each\ edge\ of\ the\ cube\ is\ 8\ mm.$