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3 years ago

For questions 1-5 estimate the sum or difference.

1 answer:

5 0

1. 9/10 + 7/8 = 71/40 (or 1.775) so I'd say 2

2. 9/50 + 7/15 = 97/150 (or 0.64667...) so I'd say 1/2

3. is this 2/8 / 9 or 2 / 8/9 please let me know

4. is this 8/12 / 31 or 8 / 12/31 :)

5. is this 15/2 / 15 or 15 / 2/15

Please let me know the second halves of 3 through 5 as well! :)

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If u guys answer this one ill give away free p

yawa3891 [41]

Answer:

$\frac{50}{7}$

Step-by-step explanation:

Swap the fraction,

$5 *\frac{10}{7} = \frac{50}{7}$

or around 7.142...

3 0

3 years ago

Carolyn and Joyce ordered a large pizza that had 12 slices. Carolyn ate 1

kondor19780726 [428]

Answer:

They ate $\frac{1}{3}$ of the pizza

Step-by-step explanation:

Carolyn and Joyce at 4 slices of pizza altogether, and since there are 12 slices of pizza, they ate $\frac{4}{12}=\frac{1}{3}$ of the pizza.

5 0

3 years ago

The equation y 16t 2 18t 405 describes the height in feet of a ball thrown downward at 18 feet per second from a height of 405 f

kumpel [21]

Answer:

Ball hits the ground after 4.5 sec

Step-by-step explanation:

Let a -1, so that the leading coefficient is positive

So our quadratic is

$-1 \times (16t^2 +18t -405)$

The key coefficients of two binomial variables can be 1 and 16, or 2 and 8, or 4 and 4, for the leading coefficient of 16.

Yet they can't actually be 4 and 4 because the linear (x) term coefficient has to be a multiple of 4, which it isn't and leading coefficients 1 and 16 on the binomial factors is not likely.

So, 2 and 8 taken as the leading coefficients of two binomial factors.

For constant 405, possible factorizations are $(81\times 5, 27 \times 15, 9 \times 45).$

$(16t^2 +18t -405) = (8t + 45) (2t - 9)$

Taking first factor, thus we find negative value for given time t. But second time equivalent to zero gives the value of 4.5 for t

Thus ball hits the ground after 4.5 sec

3 0

4 years ago

If f(x)=-4x-5 and g(x)= 3-x, what is g(-4) +f(1)? A.-10 B.7 C.-9 D.-2

Kisachek [45]

Answer:

-2

Step-by-step explanation:

sustitue -4 into x for 3-x which would equal 7 because a negative times a negative equals positive. Then substitue 1 in for x in -4x-5 which would get you -9

give brainliest pls

7 0

3 years ago

Suppose y varies inversely with x, and y = 25 when x = 1/5. What is the value of y when x = 5 ?

34kurt

Answer:

y = 1

Step-by-step explanation:

Given that y varies inversely with x then the equation relating them is

y = $\frac{k}{x}$ ← k is the constant of variation