3 years ago

What is the image of (-4, -5) after a reflection over the y-axis?

Mathematics

1 answer:

ololo11 [35]3 years ago

5 0

Answer:

(4,-5)

Explanation:

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Is 5(a + b) and (a + b)5 equal?

Slav-nsk [51]

Answer:

yes totally

Step-by-step explanation:

5a+5b=5a+5b

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3 years ago

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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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3 years ago

The measure of the perimeter of a triangle is 37s+ 42. It is known that two of the sides of the triangle hare measures of 14s+ 1

ale4655 [162]

Answer:

13s+6

Step-by-step explanation:

the length of the third side =

37s+42- (14s+16+10s+20) =

37s+42 - 24s -36 =

13s+6

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3 years ago

Two or more equations that have the same solution set called ________ equations

masya89 [10]

Equivalent system, equivalent systema of equations

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Write in descending order.420t + 201 to the 3rd power -210t to the 2nd power

nexus9112 [7]

To answer this, we need to see the polynomial. Descending order is in a way that the first term of the polynomial will be three, the second (in descending order, two....and so on).

420t+20t3-210t2

In descending order is:

20t^3 - 210t^2 + 420t

So, the option is number two.

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1 year ago