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2 years ago

If x represents a number, write an expression in terms of x for seven less than three times this number divided

Mathematics

1 answer:

TEA [102]2 years ago

5 0

Step-by-step explanation:

seven less than three times this number = 7 - 3x

7 - 3x divided by 5 times the square of number =

$\frac{7 - 3x}{5 {x}^{2} }$

hope this answer helps you dear...and may u have a great day ahead!

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Jenny has saved $3,800 over the last 12 months. She saved either $250 or $350 a month. During the 12 month period, how many time

Nana76 [90]

Answer:

Jenny save 4 times $\$ 250$ for the month

Step-by-step explanation:

Given Jenny has saved $\$3,800$ over the last 12 months.

She saved either $\$250$ or $\$350$ a month.

Let the number of months to save $\$250$ be x

Let the number of months to save $\$350$ be y

Total period is 12 month.

$x+y=12 \ \ \ \ equation\ 1$

Jenny has saved $3,800 over the last 12 months.

$250x+350y=3800$

Dividing both side from 50 we get,

$\frac{250}{50}x+\frac{350}{50}y= \frac{3800}{50}$

$5x+7y=76 \ \ \ \ equation\ 2$

Now Multiplying equation 1 by 5 we get,

$5\times(x+y)=5\times 12\\5x+5y=60\ \ \ \ equation \ 3$

Now Subtracting Equation 3 by equation 2 we get,

$(5x+7y=76)-(5x+5y=60)\\2y=16\\y=\frac{16}{2}= 8$

Substituting the value of y in equation 1 we get,

$x+y=12\\x+8=12\\x=12-8\\x=4$

∴ Jenny save 4 Months of $\$ 250$ and 8 Months of $\$ 350$ in a 12 month duration

4 0

2 years ago

Read 2 more answers

WILL MARK BRANIEST: Write the equation of the line fully simplified slope-intercept form.

Ierofanga [76]

Answer:

y = 3x - 4

Step-by-step explanation:

Slope-intercept is defined y = mx + b

Where m = slope (change in y-coordinate/ change in x-coordinate)

and b = y-intercept (where the graph crosses the y-axis)

For every 1 unit the line moves horizontally... it travels 3 units vertically. Therefore the slope (m) equals 3/1 or 3

The line crosses the y-axis at -4. Therefore... the y-intercept (b) is -4

I hope this helps!

8 0

3 years ago

Read 2 more answers

If paper clip weight 3gram how many paper clip are in pound

Strike441 [17]

Answer:

the answer is 151 paper clips

Step-by-step explanation:

Because in one pound = 453.592 grams

Then you will divide 453.592 by 3 and you will get 151

which means there are 151 paper clips in 1 pound

5 0

3 years ago

7. Each year Lizzie's school purchases student agenda books which are sold in the school store This veal the mm purchased 350 bo

Paul [167]

If the school spent $1,137.50 and wants to make a $1500 profit, then they need to make $2637.50 to earn back what they spent and make a profit. So, if you divide $2637.50 by 350, the number of books they purchased, you get the amount each book would have to cost to make this much money. The lowest price they could sell them for is $7.54.

4 0

3 years ago

This morning, Tisha took a history test. There were 96 multiple-choice problems on the test and Tisha answered 25% of them corre

Nana76 [90]

Answer:

24 correct answers

Step-by-step explanation:

Step One: Convert 25% to decimal form

All we have to do to convert 25% to decimal form is move the decimal point (which is assumed comes after the 5 in this case) two spaces to the left, which leaves us with 0.25.

Step Two: Find 25% of 96

To find a percentage of a number, we just have to multiply the percentage in decimal form by our number. Since we now know that 25% = 0.25, all we have to do is multiply 0.25 by 96. This gives us 25% of 96, which would be 24 correct problems.

3 0

2 years ago