sandy has $200 in her bank account. if she writes 6 checks for exactly $19.98, what expression describes the change in her bank account

Answer:

(2m - x) • (4m + 7x)

Step-by-step explanation:

The numbers by writing and solving a system of equations are 50 and 105

System of equations

Let the unknown numbers be x and y

If twice a number plus twice a second number is 310, then;

2x + 2y = 310

x + y = 155

x = 155 - y

Also, If the difference of the numbers is 55, hence;

x - y = 55

155 - y - y = 55

155 - 2y = 55

-2y = 55 - 505

2y = 100

y = 50

Substitute y = 25 into 1 to have:

x = 155 - 50

x = 105

Hence the numbers by writing and solving a system of equations are 50 and 105

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For this case, we want to know what percentage of 75 represents the amount of "10". For this, we make a rule of three:

75 ---------------> 100%

10 ---------------> x

Where the variable "x" establishes the percentage that represents 10 having a base of 75.

Thus, 10 represents, approximately 13.3% of 75.

Answer:

The most appropriate option is option B. For the percentage, multiply by 100.

⇒ 13.33 percent of 75 is 10

Here we have to find the percentage

of 75 percent to get 10

Let us assume the percent is = x

Therefore,

To find the x percent of 75

Divide x by 100 and multiply it with 75

Then,

⇒ 75x/100

Now equate it to 10

Therefore,

⇒ 75x/100 = 10

⇒ 75x = 1000

⇒    x  = 1000/75

⇒     x  = 13.33%

Hence the percentage is,

⇒     x  = 13.33%

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Answer:

D

Step-by-step explanation:

If the least it can be is 12, that means that with will have to be equal to 12

so mark out a and b

It also said the least, this means it can not be less than it.

Put these two together and you get D) k is greater than or equal to 12