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3 years ago

-x/8<-1/2 solve each inqequality

1 answer:

3 0

-x/8<-1/2. Use the reverse order of operations to solve this. So, as both sides are negative, multiply them by -1 to get you to x/8>1/2, as multiplying by a negative flips the symbol. Solve that by multiplying 1/2 to 8/1. Multiply the numerators and denominators, to give you 8/2. Simplified, x>4

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Calculate the slope

lesya692 [45]

Answer:

Undefined

Step-by-step explanation:

Slope us (y2-y1)/(x2-x1)

(9-4)/(3-3)

Cant divide by zero

3 0

2 years ago

A traffic helicopter descends 102 meters to be 331 meters above the ground, as illustrated in the diagram to the right. Write an

lana66690 [7]

Answer:

h -102 = 331
h = 433

Step-by-step explanation:

Using the problem statement as the basis for the equation, we can write ...

h -102 = 331

Using the diagram as the basis for the equation, we could write it as ...

h = 331 +102

The original height of the helicopter was 433 m.

3 0

2 years ago

apply the function transformation of g(x)=f(x-2)+4 to f(x)=x^3-8. describe the transformation and find the final form of the fun

Fittoniya [83]

Answer:

g(x) = (x - 2)^3 - 4

Step-by-step explanation:

first, the function f is shifted to the right by 2 units and then shifted up by 4 units

4 0

3 years ago

Item 3 Question 1 A teacher spends $354 on costumes and microphones for six cast members in a play. Each cast member receives a

vovikov84 [41]

The microphone was $126.

You would multiply $38 by 6 which equals $228.

Then do $354-$228 which equals $126.

5 0

3 years ago

The article "Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177–18

Papessa [141]

Answer: 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

Step-by-step explanation:

Since we have given that

Number of alluvial wells = 349

Number of quaternary wells = 143

Number of alluvial wells that had concentrations above 0.1 = 182

Number of quaternary wells that had concentrations above 0.1 = 112

Average of alluvial wells = 0.27

Standard deviation = 0.4

Average of quaternary wells = 1.62

Standard deviation =1.70

So, 95% confidence interval gives

alpha = 5% level of significance.

$\dfrac{\alpha}{2}=2.5\%\\\\z_{\frac{\alpha}{2}}=1.96$

So, 95% confidence interval becomes,

$(1.62-0.27)\pm 1.96\sqrt{\dfrac{0.4^2}{349}+\dfrac{1.7^2}{143}}\\\\=1.35\pm 1.96\times 0.020\\\\=(1.35-0.040,1.35+0.040)\\\\=(1.31,1.39)$

Hence, 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

6 0

3 years ago