2 years ago

The pictogram shows information about the numbers of phones sold in a shop over a 5-month period.

Mathematics

1 answer:

OLEGan [10]2 years ago

7 0

Answer:

a) 5(6) = 30

b) 3.5(6) = 21

c) 153

Step-by-step explanation:

c) 30 + 39 + 21 + 36 + 27 = 153

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Viktor [21]

Answer:

$x =\sqrt 5$

$y = \sqrt{5$

Step-by-step explanation:

Given

The attached triangle

Required

Solve for x

Considering angle 45 degrees, we have:

$\cos(45) = \frac{y}{\sqrt{10}}$ --- cosine formula i.e. adj/hyp

Solve for y

$y = \sqrt{10} * \cos(45)$

In radical form, we have:

$y = \sqrt{10} * \frac{1}{\sqrt 2}$

$y = \sqrt{10/2}$

$y = \sqrt{5$

To solve for x, we make use of Pythagoras theorem

$x^2 + y^2 = (\sqrt{10})^2$

$x^2 + y^2 =10$

Substitute for y

$x^2 + (\sqrt 5)^2 =10$

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Collect like terms

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2 years ago

What is the surface area of the right cylinder pictured below with

Aloiza [94]

Answer:

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Step-by-step explanation:

250 cm2

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2 years ago

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avanturin [10]

Answer:

pic attached

Step-by-step explanation:

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1 year ago

The difference of the squares of two consecutive integers is 21. find the integers.

photoshop1234 [79]

Let the two integers be x and x+1
(x+1)^2-x^2=21
x^2+2x+1-x^2=21
2x+1=21
2x=20
x=10
then x=10, x+1
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2 years ago

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SpyIntel [72]

I am pretty sure is 70 degrees but I don’t know for sure

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