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padilas [110]
3 years ago
11

The sum of the square of 5 and 8

Mathematics
1 answer:
svlad2 [7]3 years ago
5 0
The square of any number means to self-multiply. This means 5 is multiplied by itself, or 5x5. So, 5 x 5 = 25, and 8 x 8 = 64.
The sum of 25 + 64 = 89.
89 is the sum of the squares 5 and 8.
I hope this helps!
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A model is 4.2 feet tall, the plywood used to make the model is 0.6 inch thick. How many sheets of plywood to make the model?
nadya68 [22]
Answer=84 sheets

4.2feet
1 foot=12 inches

4.2*12=<span>50.4inches

50.4/0.6=</span><span>84 sheets</span>
4 0
4 years ago
Factor tree<br>67344 using prime numbers​
Aleksandr-060686 [28]

Answer:

2^4*3*23*61

Step-by-step explanation:

\begin{array}{c|c}67344&2\\33672&2\\16836&2\\8418&2\\4209&3\\1403&23\\61&61\\1&\\\end{array}

8 0
3 years ago
An isotope of iodine has a mass of 134 amu. How many neutrons does the
Nina [5.8K]

Answer:

The correct option is C: the isotope of iodine contains 81 neutrons.

Step-by-step explanation:

The mass (A) of the iodine isotope is given by:

A = Z + N

Where:

Z: is the number of protons

N: is the number of neutrons

For iodine Z= 53, so if A = 134 the number of neutrons is:

N = A - Z = 134 - 53 = 81

Therefore, the correct option is C. The isotope of iodine contains 81 neutrons.

I hope it helps you!

5 0
3 years ago
Use technology or a z-score table to answer the question.
matrenka [14]

Answer:

D

Step-by-step explanation:

I usually use a z-score table, but you can do this with a calculator.

If we go to a z-score table, we first look up the first two digits (in this case, 2.8) in the far left column.  Then we find the hundredths digit in the top row (0.07).  Where they intersect is P(z < 2.87).

P(z < 2.87) = 0.9979

Answer D.

4 0
3 years ago
When think of a number double it<br> and add five and get 13 What the number I<br> Thought
aev [14]

Let the no be x

ATQ

\\ \sf\longmapsto 2x+5=13

\\ \sf\longmapsto 2x=13-5

\\ \sf\longmapsto 2x=8

\\ \sf\longmapsto x=\dfrac{8}{2}

\\ \sf\longmapsto x=4

3 0
3 years ago
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