2 years ago

Can someone tell me what x equals

Mathematics

1 answer:

Troyanec [42]2 years ago

4 0

X=22. The supplementary angle is 90°, so the 66° angle, plus (x+2) has to add up to 90° too.

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Solve x/48 = 5/6 using two different strategies.

Anettt [7]

You can do this:
6 * ? = 48, ? = 8, so you multiply the five by 8 too, and you find that x = 40. Another method you can use would just to be to add 5 to the top and 6 to the bottom until the denominators equal each other.

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2 years ago

An airplane travels at an average speed of 250 mph for 3 hours.

expeople1 [14]

250 × 3 = 750

D. 750

And i think i have already answered this one before..

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2 years ago

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The equation R=10a-20 represents the revenue R (in dollars) you make by spending A dollars on advertising. You revenue totaled $

timurjin [86]

R = 10a - 20
ur revenue totaled 110...so R = 110

110 = 10a - 20
110 + 20 = 10a
130 = 10a
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2 years ago

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Simplify (12ab)(3t). 15abt 123abt 36abt

Anon25 [30]

(12ab)(3t) = (12 · 3)(abt) = 36abt

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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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2 years ago