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Cerrena [4.2K]
3 years ago
11

Please hep me :( i really need help i will give u brainly :D

Mathematics
2 answers:
zheka24 [161]3 years ago
8 0

Answer:

Step-by-step explanation:

80 ml bottle for 55 : 55/80= 11/6=0.6875

50 ml bottle the price ( buy one get half price off the second one) :

45+(45*50%)=67.5 for two bottles

price per ml for 50ml bottle: 67.5/100=0.675

comparing prices : 0.675 is less than 0.6875

it is better to buy 50 ml bottle

not a big difference

svet-max [94.6K]3 years ago
7 0

Answer: The 80ml is the best deal

Step-by-step explanation:

Bc the half price of 45 is 22.5 so 45 + 22.5 equals $67.50 and the 80ml would equal 55.

Therefore the 80ml one is cheaper than the 50ml

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HELP!!! ASAP!!!!!!!! WILL GIVE LOTS OF POINTS PLUS BRAINLIEST
olya-2409 [2.1K]

Answer:

x = 3.27837238

Step-by-step explanation:

1. The value of a variable that makes an equation true.

2. In chemistry, a solution is a homogeneous mixture composed of only one phase.

3 0
2 years ago
These 2 questions math 9th thanks! will give brainly!!
denis-greek [22]

Answer:

1)     25+7(n-1)

When the above 'n'(hours) is substituted on the equation, it equals up to the right cost.

2)      Given that n represents the no.of bikes, you just plug it in to the equation below.

250+39(n-1)

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7 0
3 years ago
consider the line y= 2/3x-0. Find the equation of the line that is parallel to this line and passes through the point (8, 4).
tresset_1 [31]
Point-slope form of a line: we need a point (x₀,y₀) and the slope "m".
y-y₀=m(x-x₀)

slope intercept form :
y=m+b

m=slope

If the line is parallel to y=2/3 x-0, the line will have the same slope, therefore the slope will be: 2/3.

Data:
(8,4)
m=2/3

y-y₀=m(x-x₀)
y-4=2/3(x-8)
y-4=2/3 x-16/3
y=2/3 x-16/3+4
y=2/3 x-4/3  (slope intercept form)

Answer: The equation of the line would be: y=2/3 x-4/3.


if we have the next slope "m",then the perendicular slope will be:
m´=-1/m

We have this equation: y=2/3 x+0; the slope is: m=2/3.

The perpendicular slope will be: m`=-1/(2/3)=-3/2

And the equation of the perpendicular line to : y=2/3 x+0, given the point (8,4) will be:

y-y₀=m(x-x₀)
y-4=-3/2 (x-8)
y-4=-3/2 x+12
y=-3/2x + 12+4
y=-3/2x+16

answer: the perpendicular line to y=2/3 x+0 , given the point (8,4) will be:
y=-3/2 x+16
3 0
3 years ago
Write the ordered pair that represents yzThen find the magnitude of yz.<br> Y(5,0), Z(7,6)
Annette [7]

Answer: (2,6) ; 2sqrt10 units

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Last year, 50% of MNM. Inc. employees were female. It is believed that there has been a reduction in the percentage of females i
Serhud [2]

Answer:

We conclude that there has been a significant reduction in the proportion of females.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 400

p = 50% = 0.5

Alpha, α = 0.05

Number of women, x = 118

First, we design the null and the alternate hypothesis  

H_{0}: p = 0.50\\H_A: p < 0.50

This is a one-tailed test.  

Formula:

\hat{p} = \dfrac{x}{n} = \dfrac{118}{400} = 0.45

z = \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

Putting the values, we get,

z = \displaystyle\frac{0.45-0.50}{\sqrt{\frac{0.50(1-0.50)}{400}}} = -2

Now, we calculate the critical value.

Now, z_{critical} \text{ at 0.05 level of significance } = -1.645

Since the calculated z-statistic is less than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there has been a significant reduction in the proportion of females.

3 0
3 years ago
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