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3 years ago

Multiply. −3.6(−5.4)(3)

Mathematics

2 answers:

Ratling [72]3 years ago

7 0

Answer:

-3.6(-5.4)(3)

=58.32

hope it helps.

Fynjy0 [20]3 years ago

5 0

Answer:

it's answer is 58.32

hope it is helpful to you

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Which statement explains how the lines 2x + y = 4 and y = one halfx + 4 are related?

KatRina [158]

Answer:

They are perpendicular

Step-by-step explanation:

To solve this problem .

we will convert the equations in slope intercept form.

Slope intercept form of equation is y = mx+c

where m is slope of line and c is y intercept.

________________________________

equation 1 is

2x+y = 4

=> y =4 - 2x or y = -2x + 4

comparing it with y = mx + c

m = -2 , c = 4

_________________________________________

equation 2 is y = one halfx + 4 ( one half is same as 1/2)

so equation is

y = x/2 +4

comparing it with y = mx + c

m = 1/2 , c = 4

_________________________________________

Now lets evaluate options

They are parallel. wrong option

For lines to be parallel slope should be same.

But here slope are different -2 and 1/2 .

Thus lines are not parallel.

__________________________________________

They are perpendicular. correct option

For lines to be perpendicular, product of slope should be equal to -1.

-2*1/2 = -1

we can see that product of slope should be equal to -1 .

Thus lines are perpendicular

______________________________________

They are the same line. wrong option

For lines to be same both slope and y intercept should be same.

Y intercept is same but the slopes are different -2 and 1/2 .

Thus lines are not the same line.

__________________________________________

They are not related. wrong option

As we have found that the lines are perpendicular .

So this option is intuitively wrong

4 0

3 years ago

How many solutions does this<br>quadratic have?<br>f(x) = -4x2 + 12x - 9

BartSMP [9]

Answer:

one, (1.5, 0)

Step-by-step explanation:

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3 years ago

What is the square root of -1

Romashka [77]

Answer:

Step-by-step explanation:

Now, before you think I'm just stealing points, let me explain. The square root of a number is the number that, if you multiply it by itself, it equals that number. The square root of 4 is 2, because 2 * 2 = 4.

Also, a negative number times another negative number, is a positive number. -2 * -2 = 4

With both of those true, then what number could be multiplied by itself to equal a negative number? i.

i is a weird number that I don't really know how to explain all that well. I am sorry, but that is all that I can give you. i is very complex and has various different equivalents, and different meanings, but i is equal to $\sqrt{-1}$ .

Hope that this helps!

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3 years ago

A box of cereal costs $3.49. How much do a dozen boxes of cereal cost?

antiseptic1488 [7]

Answer:

41.88

Step-by-step explanation:

3.49*12=41.88

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3 years ago

Read 2 more answers

PLEASE HELP 9 AND 10 <br> IM LITERALLY CRYING

tekilochka [14]

Answer:

#10:

burger: $7.50

fries and drink: 2.50

idk about #9 tho sry

Step-by-step explanation:

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