3 years ago

Solve for x: 2 over 3 (x − 4) = 2x

Mathematics

1 answer:

brilliants [131]3 years ago

8 0

X = 7 just got it though Symbolab

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Graph a line with a slope of -2/5 That contains the point (-3,5)

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put one point on (-3,5) and another point on (2,3)

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2 years ago

A random sample of the amounts for 22 purchases was taken. The mean was $42.97, the standard deviation was $22.82, and the m

Illusion [34]

Answer: a) 84 and b ) 2084

Step-by-step explanation:

Given : Sample standard deviation : s= $22.82

(Population standard deviation is unknown ) , so we use t-test.

Critical value or the 95% confidence intervals : $t_{n-1}*=2.0$

Formula to find the sample size :

$n=(\dfrac{t^*\cdot s}{E})^2$

a) E = 5

$n=(\dfrac{(2)\cdot 22.82}{5})^2$

$n=(9.128)^2=83.320384\approx84$

i.e. Required sample size : n= 84

b) E = 1

$n=(\dfrac{(2)\cdot 22.82}{1})^2$

$n=(45.64)^2=2083.0096\approx2084$

i.e. Required sample size : n= 2084

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2 years ago

-5x + 3(7x - 5)<br> Help???

Anna007 [38]

So here we just are gonna distribute and simplify.

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2 years ago

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the bike course is 80 miles long and I have ridden 44 miles of the course. what percentage have avridden?

andreev551 [17]

You have ridden 55% of the way.

You have to set up a proportion 44 over 80 is equal to x over 100 (x is what we are trying to find - the percentage you have ridden). Then use cross products and multiply the 44 by 100 to get 4400 and divide that by 80 to get 55. So the answer is 55 so 55%.

55%.

Hope this helps!
Can u plz mark me as brainliest? I really need it!

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2 years ago

Given that the points (-3, 2) and (1, 2) are vertices of a rectangle, what two sets of coordinates could form the other two vert

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-3,2 means on quadrant 4 and 1,2 is in quadrant 1

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2 years ago