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mixer [17]
3 years ago
11

Work out 5^-2 x 3 square root 8

Mathematics
1 answer:
Serjik [45]3 years ago
5 0

Answer:

6root(2)/25

Step-by-step explanation:

5^-2 = 1/25

3(root(8)) = 6(root(2))

so you get 6(root(2))(1/25)

= 6(root(2))/25

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"If 5 is decreased from double Joe's weight, the result is 230. What is Joe's weight?"<br> 30
Gala2k [10]

Answer:

117.5 or 235/2

Step-by-step explanation:

We can set up an equation for this problem:

Lets Joe's weight be x

then:

2x -5 = 230

therefore:

2x = 235

x = 117.5 or 235/2

3 0
3 years ago
Megan received a $208,000 inheritance after taxes from her parents. She invested it at 8% interest compounded quarterly for 5 ye
Nookie1986 [14]
Use the compound interest formula.
  A = P*(1 +r/n)^(n*t)
where P is the principal, r is the annual rate, n is the number of compoundings per year, and t is the number of years.

For the first investment, ...
  A = 208,000*(1 +.08/4)^(4*5) = 309,077.06

For the second investment, ...
  A = 218,000*(1 +.07/2)^(2*4) = 287,064.37

Totaling both investments at maturity, Megan has $596,141.43.
3 0
3 years ago
Please i need to get good grades
daser333 [38]

Answer:

47°

Step-by-step explanation:

angles x and 133 are supplementary, so they add up to 180°

subtract 133 from 180 to get 47

7 0
3 years ago
A hardware dealer has 168kg of nails, if one nail weighs 0.25kg, how many nails he have?​
snow_tiger [21]

Answer:

He has 672 nails

Step-by-step explanation:

168/.25

7 0
2 years ago
Read 2 more answers
Expand the following expression: 4 (2k + j)
Nadya [2.5K]

Answer:

4(2k + j) = 8k + 4j

Step-by-step explanation:

4(2k + j)

Distribute in the 4.

4 * 2k + 4 * j

Multiply 4 and 2k.

8k + 4 * j

Multiply 4 and j.

8k + 4j

3 0
1 year ago
Read 2 more answers
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