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2 years ago

Please help me with this asap!

Mathematics

1 answer:

Molodets [167]2 years ago

5 0

Answer:

slope: -3/2
R(6, -10)

Step-by-step explanation:

Point B is 6 units below and 4 units to the right of A, so the slope is ...

slope = (change in y)/(change in x) = -6/4 = -3/2

Point R corresponds to point B, so will be 6 units below and 4 units to the right of point Q.

R = Q + (4, -6) = (2, -4) + (4, -6) = (2+4, -4-6)

R = (6, -10)

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Here are two sets of numbers, a and b. Set a :200,104,100,160. Set b: 270,400,483,300, x. Mean of set a: mean of set b= 3:8. Wor

LenKa [72]

Given:

The given sets are:

Set a : 200, 104, 100, 160.

Set b: 270, 400, 483, 300, x.

Mean of set a: mean of set b= 3:8

To find:

The value of x.

Solution:

Formula for mean:

$Mean=\dfrac{\text{Sum of observations}}{\text{Number of observation}}$

The mean of set of a is:

$Mean=\dfrac{200+104+100+160}{4}$

$Mean=\dfrac{564}{4}$

$Mean=141$

The mean of set of b is:

$Mean=\dfrac{270+400+483+300+x}{5}$

$Mean=\dfrac{1453+x}{5}$

It is given that,

Mean of set a: mean of set b= 3:8

$\dfrac{141}{\dfrac{1453+x}{5}}=\dfrac{3}{8}$

$\dfrac{705}{1453+x}=\dfrac{3}{8}$

$8\times 705=3\times (1453+x)$

$5640=4359
+3x$

Isolate the variable x.

$5640-4359
=3x$

$1281
=3x$

Divide both sides by 3.

$\dfrac{1281}{3}
=x$

$427
=x$

Therefore, the value of x is 427.

3 0

2 years ago

Help me asap!!!! please

Lubov Fominskaja [6]

Answer:

x = 3 should be the answer

Step-by-step explanation:

y is not graphed so y isn't part of the equation while x is so its X = K (K being the number that it goes up on) same thing applies to y if its horizontal then the equation is Y = K)

6 0

2 years ago

PLEASE SOLVE AND CHECK. SHOW COMPLETE SOLUTION

yaroslaw [1]

Answer:

-2/3= x

Step-by-step explanation:

square all the terms on both sides to get rid of the radicals:

$1^{2} + (\sqrt{1-x} )^{2} = (\sqrt{2x+4}) ^{2}$

exponent 2 and the radical cancel each other:

1 + 1 - x = 2x + 4

2 - x = 2x + 4

like terms on each side ( when you move one term tp the other side, it changes its sign ):

2-x = 2x+4

2-4 = +x +2x

-2 = 3x

now to keep the x alone, divide both sides by 3:

-2/3 = 3x/3

-2/3= x

3 0

1 year ago

I don’t know the answer to this pls help

Aleonysh [2.5K]

Answer:

☞B I think.

Step-by-step explanation:

Tell me if I'm wrong or correct! :D

8 0

2 years ago

Read 2 more answers

Which is greater 0.15 or 1/5

katen-ka-za [31]

In order to do this we need to make them both fractions, or both decimals. It's much easier to make them both decimals, as you can get $\frac{1}{5}$ into decimal form by simply dividing 1 by 5.
$1 / 5 = .20$
If 1/5 = .20, then 1/5 is greater than .15!

6 0

3 years ago