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Sergeu [11.5K]
3 years ago
13

PLS HELP 15 POINTS

Mathematics
1 answer:
Semmy [17]3 years ago
4 0

Answer:

2√21

Step-by-step explanation:

Diagonal =√(L²+W²+H²)

Diagonal =√(8²+4²+2²)=√(64+16+4)=√84=2√21

You might be interested in
What numerical expression is equivalent to (2^2)^3
oksian1 [2.3K]

Answer:2*2=4

4^3=4*4*4=64

Step-by-step explanation:

5 0
3 years ago
If 800g of a radioactive substance are present initially and 8 years later only 450g remain, how much of the substance will be p
artcher [175]

A=Pe^(rt)

P = 800g

t = 8 years

A = 450g

r = This is what we will try and find to start with

450=800e^(r*8)

After running the math through a calculator, we end with r = -0.07192

Now we just re-input this information into our equation: A=800e^(-0.07192*16)

A=800e^(1.15072)

Now we will re-write the equation using the negative exponent rule:

A = 800 1/e^1.15072

Combine right side:

A = 800/e^1.15072

Then do the math:

A = 253.12709836......

That will give us A = 253 (rounded to the whole number)

I hope this helps! :)

5 0
3 years ago
What is the slope of a line that passes through -8, -16 and 18, 5?
ddd [48]
Slope formula:

y2 - y1
_____
x2 - x1


5 + 16
_____
18 + 8


21
__
26

slope is 21/26
8 0
3 years ago
Please help me I’m dying
Alex

Answer:

a° = 58°

b° = 48°

c = 74°

d° = 122°

Step-by-step explanation:

<em>Angles on a straight line add up to 180°</em>

58° + d° = 180°

d° = 180° - 58° = 122°

<em>Alternate angles are equal.</em>

a° = 58°

<em>Angles in a triangle add up to 180°.</em>

48° + 58° + c° = 180°

106° + c° = 180°

c° = 180° - 106° = 74°

<em>Angles on a straight line add up to 180°</em>

74° + 58° + b° = 180°

132° + b° = 180°

b° = 180° - 132° = 48°

5 0
3 years ago
The U.S.-based motorcycle manufacturer says that it expects to build $150,000 motorcycles this year, up from $133,000 last year.
Leokris [45]

Answer:

Step-by-step explanation:

(148-134)/134 = x%

14/134 = x%

x = 10.4%

Have a great day

:)

4 0
3 years ago
Read 2 more answers
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