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Alisiya [41]
3 years ago
12

Hector must find the sum of 50 + 83 + 50 by using mental math. Which property allows Hector to simplify the equation to 50 + 50

+ 83 and find an equivalent sum?
associative property
commutative property
distributive property
identity property
Mathematics
2 answers:
olasank [31]3 years ago
8 0

Answer:

183 A

Step-by-step explanation:

Elodia [21]3 years ago
3 0

Answer:

The associative property because it allows you to group together numbers to make it easy to add.

I hope this helps!

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he sum of the first two terms of a G.P is 27 whereas the sum of the second and third term is 54. Find the first term and the com
viktelen [127]

Answer:

{ \tt{sum =  \frac{a(r {}^{n - 1} )}{n - 1} }} \\ 27 =  \frac{a(r {}^{2 - 1} )}{2 - 1}  \\ { \bf{27 = ar -  -  - (i)}} \\  \\ 54 =  \frac{a( {r}^{3 - 1} )}{3 - 1}  \\ { \bf{108 = a {r}^{2} -  -  - (ii) }} \\ { \tt{(ii) \div (i) : }} \\ r =  \frac{108}{27}  \\ { \bf{common \: ratio = 4}} \\ { \bf{first \: term =  \frac{27}{4}  }}

7 0
3 years ago
The formula for the size of a file that was downloaded over time t and at an average rate r is r.t.
lakkis [162]

Answer:

The size of file downloaded is  <em>88 megabytes.</em>

Step-by-step explanation:

Given that:

Average rate of downloading the file = r

Time taken to download = t

Formula for the size of file downloaded = r.t

Rate of downloading, r = 800\ kilobytes/sec

Time taken, t = 110 seconds

To find:

Size of file downloaded in megabytes = ?

Solution:

First of all, let us apply the given formula to find the size of file downloaded:

Size of file downloaded = r.t

Size of file downloaded = 800 kilobytes seconds \times 110 seconds =

<em>88000 kilobytes</em>.

Now, let us convert the unit kilobytes to megabytes to find the answer.

<em>Conversion formula:</em>

1000 kilobytes = 1 megabyte

Let us use unitary method to find the number of megabytes in 88000 kilobytes.

1 kilobytes = \frac{1}{1000} megabytes

88000 kilobytes = \frac{1}{1000} \times 88000 megabytes

\Rightarrow <em>88 megabytes.</em>

Therefore, the size of file downloaded is  <em>88 megabytes.</em>

5 0
3 years ago
Is it A,b,c,d this answer of integers
valkas [14]
C is your answer; ) hope it helps
8 0
3 years ago
Read 2 more answers
5. A video store charges a monthly
Rasek [7]
Answer: 8 movies

12 + 1.50x = 3x

Move the variables to one side

12 = 1.50x

Isolate x

8 = x


Check:

3(8)= 24

12.00 + 1.50(8) = 24
8 0
3 years ago
The table below shows the amounts of lemon juice and sugar used in each container of lemonade. The ratio of lemon juice to sugar
stira [4]
1/2 : 1
2 : 4
3 : 6
Notice that every ratio consists of a number and double the number.

For 1/2 cup lemon juice, use 1 cup sugar.
The amount of sugar is twice the amount of lemon juice.

The ratio is 1:2
Since you are told the ratio is 1:r, that means r is 2.

The unit rate is 2 cups sugar per cup of lemon juice.
5 0
3 years ago
Read 2 more answers
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