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3 years ago

Can someone plz help me ?

Mathematics

1 answer:

Reptile [31]3 years ago

7 0

Answer:

1/5

Step-by-step explanation:

You go up 1 and over 5, hence (say it out loud) 1/5.

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Can someone please explain to me how to do this

muminat

Step-by-step explanation:

u should:

7t = t + 48 » 7t - t = 48 » 6t = 48 » t = 8

and another one is:

2u + t + 13 = 10t + u - 44» 2u + 8 + 13 = 80 + u - 44»

» 2u + 21 = u + 36 » 2u - u = 36 - 21 » u = 15

8 0

3 years ago

Find a positive number for which the sum of it and its reciprocal is the smallest (least) possible. Let x be the number and let

Allisa [31]

Answer:

$S(x) = x + \frac{1}{x}$ --- Objective function

Interval = $\{x:x=1\}$

Step-by-step explanation:

Given

Represent the number with x

The required sum can be represented as:

$x + \frac{1}{x}$

Hence, the objective function is:

$S(x) = x + \frac{1}{x}$

To get the the interval, we start by differentiating w.r.t x

Using first principle, this gives:

$S'(x) = 1 - \frac{1}{x^2}$

Equate S'(x) to 0 in order to solve for x

$0 = 1 - \frac{1}{x^2}$

Subtract 1 from both sides

$0 -1 = 1 -1 - \frac{1}{x^2}$

$-1 = - \frac{1}{x^2}$

Multiply both sides by -1

$1 = \frac{1}{x^2}$

Cross Multiply

$x^2 * 1 = 1$

$x^2 = 1$

Take positive square root of both sides because x is positive

$\sqrt{x^2} = \sqrt{1$

$x = 1$

Representing x using interval notation, we have

Interval = $\{x:x=1\}$

To get the smallest sum, we substitute 1 for x in $S(x) = x + \frac{1}{x}$

$S(1) = 1 + \frac{1}{1}$

$S(1) = 1 + 1$

$S(1) = 2$

Hence, the smallest sum is 2

3 0

4 years ago

a recipe uses 1 and 1/4 of milk to make 10 servings if the same amount of milk is made for each serving how many serving can be

Simora [160]

Answer:

12.8

Step-by-step explanation:

1 1/4 cup of milk? if it is- 16 cups / gal

16/1 1/4 = 12.8 servings

7 0

3 years ago

On see the inverse Nutrlicative meses have a product of 1. Find the multiplicative inverses of the terms in the first column Sho

SpyIntel [72]

Answer:

765

Step-by-step explanation:

did this queastion 20 minutes ago

4 0

3 years ago

Solve for x: 3(x+1)=5 (x-2)+7

Aleonysh [2.5K]

Step-by-step explanation:

3( x +1) = 5 (x - 2) + 7

3x + 3 = 5x - 10 + 7

5x - 3x = 3 + 10 - 7

2x = 13 - 7

2x = 6

Therefore x = 3

8 0

3 years ago