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3 years ago

Use rounding to estimate the product. 8x9.82

Mathematics

1 answer:

Monica [59]3 years ago

4 0

Answer:

8x9.82= 78.56

rounding would be 78.6

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Determine whether each relation is a function

Alex

Step-by-step explanation:

(2,4),(3,5),(4,6),(5,8) (1,4),(2,3),(3,-6),(-3,6)

is NOT a function, because some x values (2 and 3) have more than one associated result value (4, 3 and 5, -6).

(1,5),(1,7),(1,-5),(1,-7) (0,4),(1,4),(2,4),(3,4)

is NOT a function as the x value 1 has more than 1 associated result values (5, 7, -5, -7, 4).

x² = y + 1

y = x² - 1

this is a function. for any value of x we get exactly one result value.

xy = 1

y = 1/x

this is a function. for any value of x we get exactly one result value. but we do need to exclude x=0.

if we cannot do that, then it is NOT a function, because x=0 has no associated result value.

x = 3

is NOT a function, because although there is only one valid x value (3), there are infinitely many possible y result values associated with this x value (y can be "anything").

y = -2

this is a function. for any value of x we get exactly one result value (constantly -2).

7 0

2 years ago

Seven hundred twelve thousandths in standard form and expanded form

pav-90 [236]

Answer:

Standard: 0.712

Expanded: 0.7 + 0.01 + 0.002

Step-by-step explanation:

Seven hundred twelve thousandths

.tenths,hundredths,thousandths

0.712

Every number in expanded fits in its place.

0.712

^ ^ ^

0.7 0.01 0.002

7 0

3 years ago

Can your write a division sentence to represent that model ?

jok3333 [9.3K]

Answer:

4/5 divided by 4 is 1/5

Step-by-step explanation:

5 0

3 years ago

I’m working on the subject Simple interest and need help.

Dmitrij [34]

I think it’s B I THINK

8 0

2 years ago

x+4y=17 and -x-6y=-23 what's the x and y I really badly need this I need this so I can play at my basketball game tommorw and I

loris [4]

Answer:

x = 5
y = 3

Solution:

=> x + 4y = 17

-x - 6y = -23

=> -2y = -6
=> y = 3

Now, let's substitute the value of y into the first equation.

x + 4y = 17
=> x + 4(3) = 17
=> x + 12 = 17
=> x = 5

Let's check our answer to make sure it is correct.

Check:

-x - 6y = -23
=> -(5) - 6(3) = -23
=> -5 - 18 = -23
=> -23 = -23

Hence, this is proven correct.

Hoped this helped.

$BrainiacUser1357$

7 0

2 years ago