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3 years ago

I'm begging you...but please write it in a long way

Mathematics

1 answer:

Anni [7]3 years ago

7 0

9514 1404 393

Answer:

a) -1 5/14

b) -1/3

c) -1 : 10

Step-by-step explanation:

a) 1/7 - 0,5·3 = 1/7 -3/2 = (1·2 -3·7)/(7·2) = -19/14 = -1 5/14

b) (3/4 -0,25)·(-2/3) = (3/4 -1/4)·(-2/3) = (2/4)(-2/3) = (1/2)(-2/3) = (-1·2)/(2·3) = -1/3

c) (1 5/6 -1,2) : (-6 1/3) = (11/6 -6/5) : (-19/3) = (11·5 -6·6)/(6·5) : (-190/30)

= (19/30) : (-190/30) = -19 : 190 = -1 : 10

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Square root of 50 estimated to the nearest integer

Lina20 [59]

Answer:

square root of 50 estimated to the nearest integer is, 7.1

Step-by-step explanation:

step 1. the square root of 50 is 7.07106781186548

step 2. reduce is 7.07

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4 years ago

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Which of the following is the solution to the inequality below ? -6/5(4-x)<_-4(X+1/2)

LuckyWell [14K]

Answer:

The answer is the option D

$x\leq 7/13$

Step-by-step explanation:

we have

$-\frac{6}{5}(4-x)\leq -4(x+\frac{1}{2})$

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Rewrite

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3 years ago

A) 152.5 is what percent of 61?<br><br> B) 7.02 is 10.4% of what number ?

Pavlova-9 [17]

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3 years ago

Point b is between A and C. if AB =2x, BC =3x+1, and AC=21, find the length of BC

leonid [27]

Step-by-step explanation:

We are here given that a point B is between A and C . Also ,

Value of AB = 2x
Value of BC = 3x + 1
Value of AC = 21 .

And we would like to calculate the length of BC . For figure refer to the attachment. From figure we can see that ,

$\rm:\implies AC = AB + BC$

Substitute the respective values,

$\rm:\implies 21 = 2x + 3x + 1$

Add like terms ,

$\rm:\implies 21 = 5x +1$

Subtract 1 on both sides,

$\rm:\implies 21-1 = 5x$

Simplify,

$\rm:\implies 20=5x$

Divide both sides by 5,

$\rm:\implies \blue{ x = 4}$

Now consider ,

$\rm:\implies BC = 3x+1$

Plug in the value of x found above ,

$\rm:\implies BC= 3(4)+1$

Simplify,

$\rm:\implies BC = 12+1$

Add,

$\rm:\implies \underline{\boxed{\blue{\rm{ \quad BC \quad =\quad 13\quad }}}}$

And we are done !

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3 years ago

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ohaa [14]

Answer:

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I'm begging you...but please write it in a long way​

I'm begging you...but please write it in a long way