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BlackZzzverrR [31]
3 years ago
5

Use the order of operations to find the value of the following expression.

Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
7 0
10² - 2 (8) + 11 . Use PEMDAS, which is the order of operation to follow:

P = parenthesis  → 10² - 2x8 +11
E = exponent     → 100 - 2x8 +11
M = Multiplication → 100 -16 +11
D = Division         → NO DIVISION
A = Addition        → 111 -16
S = Subtraction  →  95 (answer 3)

Apply the same logic for the 2nd exercice and you will find 26 (I don't see the 26 in your answer but I am sure it's 26)


Tju [1.3M]3 years ago
3 0
95

3 plus 27 minus 4
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<span>In triangle WXZ,

Line WY is an altitude (as shown in the attached picture)
Now, it is given that:
</span><span>If ΔYWZ ~ ΔYXW
</span>∠WXY = ∠WZY
<span>
Then, we can also conclude 
</span>∠WYX = ∠WYZ = 90°....(1) (because WY is the altitude)

Now, in any triangle, the sum of all the three angles is 180.

In triangle, WXY, ∠WYX = 90° (From 1)
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Similarly, in WZY.

Hence, we conclude that XWZ is a right angle.

7 0
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To solve this problem, we simply use the equation of volume for hollow cylinders:

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8. You are planning to use a ceramic tile design in your new bathroom. The tiles are blue-and-white equilateral triangles. You d
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Applying the law of sines

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so

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