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3 years ago

write a numerical expression to represent "one half the sum of 6 and 12 is multiplied by the difference of 15 and 8"

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

8 0

[(6+12)*(1/2)](8-15)

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1 red bean for every 3 blue beans. Decimal equivalent of percent of red beans?

11111nata11111 [884]

The decimal equivalent is 0.25.

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3 years ago

Christa had a music lesson every week for one year.

raketka [301]

Answer:

39 hours

Step-by-step explanation:

52 × 45 = 2340

2340 mins into hours = 39 hours

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1 year ago

Let a = x2 + 4. Use a to find the solutions for the following equation:

Zepler [3.9K]

The solutions for x are -2, 0, 2

<em><u>Solution:</u></em>

Given that,

$\text { Let } a = x^2 + 4$

Given equation is:

$(x^2 + 4)^2 + 32 = 12x^2 + 48$

$(x^2 + 4)^2 + 32 = 12(x^2 + 4)$

$\text { Subtsitute } a = x^2 + 4 \text{ in above equation }$

$a^2 + 32 = 12a\\\\a^2 -12a + 32 = 0$

$\text{ Let us factorize the above equation }\\\\\text{ Splitting the middle term -12a as -4a - 8a we get, }$

$a^2 -4a - 8a + 32 = 0$

Taking "a" as common term from first two terms and taking "-8" as common from last two terms

$a(a-4)-8(a - 4) = 0$

$\text{Taking (a - 4) as common term, }\\\\(a - 4)(a - 8) = 0$

$\text{Equating to zero we get, }\\\\(a - 4) = 0 \text{ or } (a - 8) = 0\\\\a = 4 \text{ or } a = 8$

$\text{Now substitute the value of a = 8 and a = 4 in: }\\\\a = x^2 + 4$

$\text{ For a = 8: }\\\\a = x^2 + 4\\\\8 = x^2 + 4\\\\x^2 = 4\\\\x = \pm2\\\\x = +2 \text{ or } -2$

$\text{For a = 4: }\\\\a = x^2 + 4\\\\4 = x^2 + 4\\\\x = 0$

$\text{Thus solutions of } x \text{ are: }\\\\x = 0 \text{ or } x = 2 \text{ or } x = -2$

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3 years ago

There are 15 pieces of fruit in a bowl and six of them are apples. What percentage of the pieces of fruit in the Bowl are apples

aleksklad [387]

Answer:

40%

Step-by-step explanation:

amount of apples = 6

total amount of fruits = 15

percentage of apples

= 6/15 x 100%

= 40%

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3 years ago

19. In the formula I = Prt, what is the value of t?

Savatey [412]

T would represent time

Hope this helped :)

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3 years ago