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statuscvo [17]
3 years ago
7

Help QUICK please and thank youuu :))

Mathematics
2 answers:
telo118 [61]3 years ago
4 0

Step 1: Simplify both sides of the equation.

28 =  −7 /2 x

Step 2: Flip the equation.

−7 /2 x = 28

Step 3: Multiply both sides by 2/(-7).

( 2 /−7 )*( −7 /2 x) = (  2 /−7 )*(28)

x=−8

Answer:

x=−8

Aleonysh [2.5K]3 years ago
4 0

28 =  -  \frac{7}{2} x \\ x = 28 \div ( -  \frac{7}{2} ) \\ x = 28 \times (  - \frac{ 2 }{7} ) \\  x =  - 8

Let's chek

- 8 \times ( -  \frac{7}{2} ) =  \frac{8 \times 7}{2}  \\  = 28

Answer:

x =  - 8

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Guys I am going to run out of points. Help with 19?<br> I don't need an explanation.
nasty-shy [4]

Answer:

A.) 20x + 2y = 500

B.) y-intercept = 250; its meaning is how many boxes of pencils they started with.

C.) x-intercept = 25; How many T-shirts they can sell at most

Step-by-step explanation:

2y - 500 = -20x

20x + 2y - 500 = 0

20x + 2y = 500

y-intercept = 250; its meaning is how many boxes of pencils they started with.

20x + 2y = 500

20(0) + 2y = 500

2y = 500

2y/2 = 500/2

y = 250

x-intercept = 25; How many T-shirts they can sell at most

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20x + 2(0) = 500

20x = 500

20x/20 = 500/20

x = 25

4 0
3 years ago
PLSSSSSS HELPPPPPPP FAST WILL GIVE BRAINLIEST
lubasha [3.4K]
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A handyman charges a fixed rate of R to visit a customers house. In addition, the hardy man charges an hourly rate for H for eac
aksik [14]

Answer:

T == R + NH

Step-by-step explanation:

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4 0
3 years ago
Intravenous fluid bags are filled by an automated filling machine. Assume that the fill volumes of the bags are independent, nor
kenny6666 [7]

Answer:

a) 0.0167

b) 0

c) 5.948

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 6.16 ounces

Standard Deviation, σ = 0.08 ounces

We are given that the distribution of fill volumes of bags is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) Standard deviation of 23 bags

\displaystyle\frac{S.D}{\sqrt{23}} = \frac{0.08}{\sqrt{23}} = 0.0167

b) P( fill volume of 23 bags is below 5.95 ounces)

P(x < 5.95)

P( x < 5.96) = P( z < \displaystyle\frac{5.95 - 6.16}{0.0167}) = P(z < -12.57)

= 1 - P(z < 12.57)

Calculation the value from standard normal z table, we have,  

P(x < 5.95) = 1 - 1 = 0

c) P( fill volume of 23 bags is below 6 ounces)  = 0.001

P(x < 6)  = 0.001

P( x < 6) = P( z < \displaystyle\frac{6 - \mu}{0.0167})

Calculation the value from standard normal z table, we have,  

P( z \leq -3.09) = 0.001

\displaystyle\frac{6 - \mu}{0.0167} = -3.09\\\\\mu = 6 + (0.0167\times -3.09) = 5.948

If the mean will be 5.948 then the probability that the average of 23 bags is below 6.1 ounces is 0.001.

7 0
3 years ago
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