2 years ago

Help pls

Mathematics

1 answer:

vaieri [72.5K]2 years ago

8 0

Answer:

Check pdf

Step-by-step explanation:

Download pdf

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What is the value of 2 1/5 +3 4/5=

navik [9.2K]

Answer:

Step-by-step explanation:

I like to line up my addition problems vertically

2 1/5

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--------------

5 5/5

but 5/5 = 1

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2 years ago

Use y=2.5x+65 to find x when y=75

uranmaximum [27]

Answer:

The value of x is 4

Step-by-step explanation:

y = 2.5x + 65; y = 75

Now, Substitute

y = 2.5x + 65

75 = 2.5x + 65

75 – 65= 2.5x + 65 – 65

10 = 2.5x

2.5x = 10

2.5x/2.5 = 10/2.5

x = 4

Thus, The value of x is 4

<u>-TheUnknownScientist</u><u> 72</u>

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2 years ago

point r is at (3, 1.3) and point t is at (3, 2.4) on a coordinate grid. the distance between the two points is

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Hello,

d=√((1.3-2.4)²+0²)=1.1

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2 years ago

Quality control is an important issue at ACME Company which manufacturers light bulbs. In order to conduct testing of the life h

mrs_skeptik [129]

Answer: 3424.28

Step-by-step explanation:

Given data : 378, 361, 350, 375, 200, 391, 375, 368, 321

Number of data values = 9

Mean : $\overline{x}=\dfrac{\sum^n_{i=1} x_i}{n}$

$\\\\=\dfrac{378+361+350+375+200+391+375+368+321}{9}\\\\=\dfrac{3119}{9}\approx346.56$

Variance = $\dfrac{\sum^n_{i=1} (x_i-\overline{x})^2}{n-1}$

$\sum^n_{i=1} (x_i-\overline{x})^2 = (31.44)^2+(14.44)^2+(3.44)^2+(28.44)^2+(-146.56)^2+(44.44)^2+(28.44)^2+(21.44)^2+(-25.56)^2\\\\=27394.2224$

Variance = $\dfrac{27394.2224}{8}=3424.2775\approx3424.28$

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2 years ago

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Answer:

125

Step-by-step explanation:

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2 years ago