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mixas84 [53]
3 years ago
8

Darko found the sum of 324 and 57 to be 894. What error did he make?

Mathematics
1 answer:
jeka57 [31]3 years ago
3 0

Answer:

b

Step-by-step explanation:

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The product of two numbers is 240. The first number is 8 less than the second number. Write an equation can be used to find x
DaniilM [7]

Answer:

The equation x = y-8

The equation  (y-8) y = 240

The first number x = 12 and second number y =20

Step-by-step explanation:

<u>Explanation</u>:-

<u>Step(l)</u>:-

Let 'x' be the first number and 'y' be the second number

Given the product of two numbers is 240

Given  data        x y = 240 …(l)

Given data the first number is 8 less than the second number.

                       x = y-8...(ll)

Substitute (ll) in equation (l) , we get

                           (y-8) y = 240

                           y^{2} -8y -240 =0

                            y^{2} -20y+12y -240 =0

                           y(y -20)+12(y -20) =0

                           (y +12)(y -20) =0

                          y = -12 and y = 20

              Y= -12 is not satisfied

              we can choose y = 20

<u>Step(ll):</u>-

Given data x =y-8

  substitute value y = 20 in x = y -8

                                             x = 20-8 = 12

<u>Final answer</u>:-

The first number x = 12 and second number y =20

4 0
3 years ago
A mechanic purchased two motor bikes for a total of 15,000 and made a profit of 10% when he sold both. He bought the first one f
Sloan [31]

Answer:

16

Step-by-step explanation:

4 0
3 years ago
A rocket being launched has three engines that are independent of each other. The probability of an engine firing is 0.97. What
zubka84 [21]

Answer:

.0873

Step-by-step explanation:

3 0
3 years ago
Two more than the quotient of a number and 6<br> is equal to 8
xxTIMURxx [149]

Answer:

36

Step-by-step explanation:

"Two more" = + 2

"quotient of a number and 6" = n/6

"equal to 8" = = 8

Set the equation:

n/6 + 2 = 8

Isolate the variable n. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

First, subtract 2 from both sides.

n/6 + 2 (-2) = 8 (-2)

n/6 = 8 - 2

n/6 = 6

Isolate the variable n. Multiply 6 to both sides.

(n/6)(6) = (6)(6)

n = 6 * 6

n = 36

36 is your answer.

~

3 0
3 years ago
(5x²-4x-1)+(2x²-3x+6) simplified
Lady bird [3.3K]
Answer: 7x² - 7x + 5
3 0
2 years ago
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