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Reil [10]
3 years ago
9

Factorise the following

Mathematics
2 answers:
Luba_88 [7]3 years ago
5 0

Please find attached photograph for your answer. Hope it is alright.

krek1111 [17]3 years ago
5 0

Answer:

(5x + \frac{3}{10} )(3x - \frac{7}{10})

Step-by-step explanation:

The expression is a difference of squares and factors in general as

a² - b² = (a + b)(a - b)

Then

(4x - \frac{1}{5} )² - (x + \frac{1}{2} )²

= (4x - \frac{1}{5} + x + \frac{1}{2} )(4x -

= (5x + \frac{3}{10} )(3x - \frac{7}{10} )

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Polonium-210 is a radioactive substance with a half life of 138 days. If a nuclear facility is handling 265 grams of polonium-21
dlinn [17]

The half life is 138 days, meaning exactly half of the material will decay after this time. Use this information to find the decay factor k:

\dfrac12=e^{138k}\implies k=-\dfrac{\ln2}{138}

Then after 250 days, there will be

265e^{250k}\approx75.492

grams left.

5 0
4 years ago
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Its cost 9,328 points to build each apartment building in the computer game big city building. What is the cost to build 5 apart
Dimas [21]

The cost would be:

46,640 Points.

8 0
3 years ago
A 16-oz jar of spaghetti sauce cost $3.59. if the cost per ounce is the same, how much would a 40-oz jar cost?
mario62 [17]

Answer:

B.$8.98

Step-by-step explanation:

We need to determine the cost per ounce.  We divide the cost by the number of ounces

3.59/16 =.224375 per ounce

Take the price per ounce and multiply by the number of ounces to determine the price of the 40 ounce jar

.224375 * 40 =8.975

Rounding to the nearest cent

8.98 for a 40 ounce jar

4 0
4 years ago
A shoe store was having a back to school sale were you could buy 6 pairs of shoes for 52.62 If a large family decided to buy 3 p
Black_prince [1.1K]

Answer:

$26.31

Step-by-step explanation:

Since 3 is half of 6, 3 pairs of shoes would cost half the price.

So...

52.62/2=$26.31

6 0
3 years ago
Solve for x -62=-15(x-1)+4​
vovangra [49]

Answer:

x=4\frac{11}{15}

Step-by-step explanation:

- 62 = - 15(x - 1) + 4

- 52 = - 15x + 15 + 4

- 52 = - 15x + 19

- 52 - 19 = - 15x + 19 - 19

- 71 = - 15x

- 15x ÷ - 15 = - 71 ÷ - 15

x = \frac{71}{15}

x=4\frac{11}{15}

8 0
3 years ago
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