2 years ago

Which point is a solution to the system?

Mathematics

1 answer:

MrMuchimi2 years ago

3 0

Answer:

what solution bc i could answer this pls let me know the equation but......

Step-by-step explanation:

to find a solution you can add divide or subtract to find the solution like x=2

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The ratio of oil to vinegar in a certain dressing is 8:5 how much oil must be blended with 7 liters of vinegar

Eduardwww [97]

10 5/6 liters

Explanation:

Oil to Vinegar:

8 to 5

x=oil

x to 7 is the ratio you want to find

Cross multiply

8 to 5

x to 7

you would get 56=5x

Divide and get x=10 5/6

6 0

3 years ago

Suppose that several insurance companies conduct a survey. They randomly surveyed 350 drivers and found that 280 claimed to alwa

KATRIN_1 [288]

Answer:

Lower limit = 0.76

Upper limit = 0.84

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 350

Number of drivers that buckle = 280

Formula:

$p' = \dfrac{x}{n} = \dfrac{280}{350} = 0.8$

$q' = 1-p' = 1 - 0.8 = 0.2$

The standard deviation for sp =

$=\sqrt{\displaystyle\frac{p'q'}{n}}\\\\=\sqrt{\dfrac{0.8\times 0.2}{350}} = 0.02138$

95% Confidence Interval:

$p' \pm z_{critical}(s_p)$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

Putting the values, we get,

$0.8 \pm 1.96(0.02138)\\= 0.8 \pm 0.0419048\\=(0.7580952, 0.8419048)\\\approx (0.76,0.84)$

Lower limit = 0.76

Upper limit = 0.84

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At a fall festival, a student council sold two types of drinks; hot chocolate and apple cider. The student council earned $1.25

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<span>C. The number of cups of hot chocolate sold. </span>

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