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svetlana [45]
3 years ago
5

What is 2 - (7/8- 3/4)?

Mathematics
1 answer:
xenn [34]3 years ago
5 0

Answer:

15/8

Step-by-step explanation:

2-(7/8-3/4)=

2-(1/8)=

15/8

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steposvetlana [31]

Answer:

36 ÷ a

55 - b

18 + c

49 x d

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Step-by-step explanation:

7 0
2 years ago
Seema covered 3 4/13(three four by thirteen)km by bus,2 5/13(Two five by thirteen)km by metro and 1 2/13(One two by thirteen)km
Ad libitum [116K]

Answer: 89/13 km

Step-by-step explanation:

3 4/13 + 2 5/13 + 1 2/13

= 43/13 + 31/13 + 15/13

= 89/13 km

6 0
2 years ago
PLEASE HELP ME OUT CCCCCCCCCCCCCCCCCC;
IRINA_888 [86]

Answer:

I think it's the last to they sound way more independent!!!

6 0
2 years ago
A manufacturer is planning to sell a new product at the price of 210 dollars per unit and estimates that if x thousand dollars i
sattari [20]

Answer:

Development costs: $2757

Promotion costs: $3155

Step-by-step explanation:

This might seem like a two-variable problem, but in actuality it's not - because the demand function is a sum of two components, each being independent and using only one variable, we can solve for the two separately.

Moreover, the price per unit and cost per unit is constant, so each product yields exactly $80 ($210 - $130).

Let's solve separately.

We need to maximize:

$80 * 160y/(y+4) - 1000y = $12800 * y/(y+4) - $1000*y

$80 * 170x/(x+7) - 1000x = $13600 * x/(x+7) - $1000*x

Let's go:

$12800 * y/(y+4) - $1000*y = $12800 * (1 - 4/(y+4)) - $1000y = $12800 - $51200/(y+4) - $1000*y

we analyze the derivative. $12800 is a constant, so we can skip it. Derivative of 1/(y+4) is -(y+4)^-2, derivative of $1000y is $1000.

deriv = $51200/(y+4)/(y+4) - $1000

We find the changepoints by analyzing $51200/(y+4)/(y+4) - $1000 = $0. We don't need to worry about y+4 = 0 because we cannot spend negative money on development/advertisement.

(y+4)^2 = $51.2

y+4 ~= 7.155417528 (or -y-4 = 7.1554... but it doesn't make sense because negative budget so we don't analyze).

y ~= 3.155417528

lastly, we should check that it's actually a maximum there - but it is, the original function goes to negative infinity.

rounding $1000y to the nearest dollar gives us $3155

Let's do the same for x:

$13600 * x/(x+7) - $1000*x = $13600 * (1 - 7/(x+7)) - $1000x = $13600 - $95200/(x+7) - $1000*x

deriv = $95200/(x+7)/(x+7) - $1000

$95200/(x+7)/(x+7) - $1000 = $0

(x+7)^2 = 95.2

(x+7) ~= 9.75704873412

x ~= 2.75704...

rounding $1000x to the nearest dollar yields $2757

3 0
2 years ago
A trampoline gym charges $6 for
zhuklara [117]

Answer:

$12

Step-by-step explanation:

Assuming you meant $6 per 1/2 hour

since by multiplying 1/2 by 2 we get 1 ( our unit rate) 6*2 = 12

whole number

12

fraction

12/1

Brainliest would be appreciated if this is helpful. Let me know if you have more questions

Hope this helps!

4 0
2 years ago
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