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3 years ago

Solve 12-5x-4kx=y for x

Mathematics

1 answer:

vfiekz [6]3 years ago

4 0

Answer:

x = - y-12/5+4k

Step-by-step explanation:

<u>Solve 12-5x-4kx=y for x</u>

12-5x-4kx = y for x

substract 12 from both side

-5x-4kx = y-12

Factor of -5x-4kx = -x(5+4k)

-x(5+4k) = y-12

Solve for x

-x = y-12/(5+4k)

Therefore x = - y-12/5+4k

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75% of a number is 120. What is 40% of the number? A. 36 B. 64 C. 138 D. 225

kakasveta [241]

Answer:

B.64

Step-by-step explanation:

75% of a number is 120.

Let's take "x" be the number.

75% of x = 120

75/100 * x = 120

0.75x = 120

x = 120/0.75

x = 160

So the number is 160.

Now we have to find the 40% of the number 160.

= 40/100 * 160

= 0.4 *160

= 64

40% of the number is B.64

Thank you.

4 0

2 years ago

Read 2 more answers

Fraction to tue lowest to 8/16

Stels [109]

$\frac{ 8^{(8 } }{16} = \frac{1}{2}$

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3 years ago

Explain how the Remainder Theorem and the Factor Theorem are related.

Daniel [21]

Basically the remainder theorem links the remainder of division by a binomial with the value of a function at a point while the factor theorem links the factors of polynomial to its zeros

8 0

2 years ago

Please helpppppppppp<br> include step by step

balandron [24]

Answer:

507

Step-by-step explanation:

As they said, I will be using 3 as pi.

$3$ (pi) $* (\frac{26}{2})^2$ (radius squared)

Without annotations: $3*\frac{26}{2}^2$

$3*\frac{26}{2}^2$

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$507$

5 0

1 year ago

Last week, the price of cherries at the corner deli was $4.99 per pound. This week, cherries at the same deli are on sale at a 1

sergij07 [2.7K]

Answer:

The price for 3.75 pounds of cherries is $17.775.

Step-by-step explanation:

The price las week was $ 4.99 and it got a discount of 15% for this week, this means that the price for this week is 100% of the one prior minus 15%, therefore it is 85% of the last price. We need to calculate the price per pound with this discount as shown below:

$\text{this week} = \text{last week}*\frac{95}{100}\\\\\text{this week} = 4.99*0.95 = 4.74 \text{ per pound}\\$

Since the price is $4.74 per pound and we want to buy 3.75 pounds, then the total amount we need to pay is:

$\text{total amount} = 3.75*4.74 = 17.775$

The price for 3.75 pounds of cherries is $17.775.

6 0

2 years ago