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3 years ago

Help with comparisons?

Mathematics

1 answer:

notsponge [240]3 years ago

3 0

I think 1 is =
2 is =
3 is >
4 is =
5 is =

But I am really not good at math, so I hope I got them right for you!

-Twix

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Is 7(x+2y) the equivalent of 14x + 14y

ryzh [129]

Answer:

the expressions are not equivalent

Step-by-step explanation:

7(x+2y) (distribute 7 into the parentheses)

= x(7) + 2y(7)

= (7x + 14y) ≠ (14x + 14y)

hence the expressions are not equivalent

8 0

3 years ago

Anyone can help me with this

uysha [10]

Answer:

y = - 6x + 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here m = - 6, hence

y = - 6x + c ← is the partial equation

To find c substitute (- 1, 7) into the partial equation

7 = 6 + c ⇒ c = 7 - 6 = 1

y = - 6x + 1 ← equation of line

5 0

4 years ago

Find the length to the nearest centimeter of the diagonal of a square 30 cm. on a side

tiny-mole [99]

Answer:

42 cm.

Step-by-step explanation:

Please find the attachment.

Let x be the length of diagonal of the square.

We have been given that length of each side of a square is 30 cm. We are asked to find the length of the diagonal of square to the nearest centimeter.

We can see from our diagram that triangle AC is the diagonal of our square.

Since all the interior angles of a square are right angles or equal to 90 degrees, so we will use Pythagoras theorem to find the length of diagonal.

$AC^2=AD^2+DC^2$

Upon substituting our given values in above formula we will get,

$x^2=(30\text{ cm})^2+(30\text{ cm})^2$

$x^2=900\text{ cm}^2+900\text{ cm}^2$

$x^2=1800\text{ cm}^2$

Let us take square root of both sides of our equation.

$x=\sqrt{1800\text{ cm}^2}$

$x=42.4264\text{ cm}\approx 42\text{ cm}$

Therefore, the length of diagonal of our given square is 42 cm.

8 0

3 years ago

What is 0.85 as fraction? Show your work please and thank you!

Levart [38]

Answer:

85/100

Step-by-step explanation:

There are only 2 numbers after the decimal point which means that is 0/100. You would get 85/100 and you can't simplify more than that.

Hope This Helps :)

4 0

3 years ago

Read 2 more answers

John's dog eats 8 ounces of dog food each day. John bought 20-pound bag of dog food. How many 8 - ounces are in 28- pounds of do

aleksley [76]

8x3= 24...
there are 3 8 ounces in 28 pounds of dog food...
hope this helps!! HAGD!

5 0

4 years ago

Read 2 more answers