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stiks02 [169]
2 years ago
7

5. Evaluate the following expression when a = -4

Mathematics
1 answer:
Basile [38]2 years ago
7 0

Answer:

Step-by-step explanation:

Given the expression

b|3a – 81 – 3/2 – 2a

If a = -4, b = 1/2

Substitute

(1/2)/3(-4) - 81 - 3/2 - 2(-4)

1/2 * 1/-12 - 81 - 3/2 + 8

= -1/24 - 81 + 8 - 3/2

= -1/24 - 3/2 - 73

= -1-36-1,752/24

= -1,789/24

= -74.5

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A human heart beats an average of 80 beats per minute. How many heart <br> beats is this in a day
vovangra [49]

Answer:

115200

Step-by-step explanation:

80 Beats Per Minute <em><u>x</u></em> 60 Minutes (1 hour) <em><u>x</u></em> 24 Hours (1 Day) = 115200

3 0
3 years ago
Find the area of the figure
lana [24]

Answer:

Below

Step-by-step explanation:

First I found the area of the portion that extends off (if that makes sense??)

It is a triangle, so use A = bh/2

A = (2)(6) / 2

   = 6 cm^2

Next I found the area of the rectangle using A = LW

A = (6)(3)

   = 18 cm^2

Total area = 18 + 6

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Hope this helps! Best of luck <3

5 0
3 years ago
Read 2 more answers
Can someone help me plz and thank u
alexandr402 [8]

Answer:

<A = 44

Step-by-step explanation:

A triangle is 180 degrees

(x+59) + (x+51) + 84 = 180        >> add everything on the left side

2x + 194 = 180                          >> subtract both sides by 194

2x = -14                                     >> divide both sides by 2 to get x alone

x = -7

since you are finding A<, substitute

<A = x + 51

<A = (-7) + 51

<A = 44  

3 0
3 years ago
What’s the answer ?
In-s [12.5K]

Answer

one answer can be x = 30

Step-by-step explanation:

triangle needs to be 180 so if xy are the shortest they can be equal so z can be 120

6 0
2 years ago
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What is the surface area of the rectangular prism?
tankabanditka [31]

Answer:

The answer is 52

Step-by-step explanation:

5 0
3 years ago
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