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3 years ago

14

A package of 4 mechanical pencils comes with 2 free erasers and if you get a total of 12 eraser how many packages of pencils did

you buy

1 answer:

r-ruslan [8.4K]3 years ago

5 0

Six packages were bought. Just count by 2's until you reach 12.

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lyudmila [28]

Answer:

$2.63

Step-by-step explanation:

$23.67/9packets

$2.63/packet

3 0

4 years ago

Kurt is buying a watch that had an original price of $195 but is advertised as 35% off. Sales tax of 8.75 % is applied to the di

Schach [20]

Answer:

$137.84

Step-by-step explanation:

We have been given that Kurt is buying a watch that had an original price of $195 but is advertised as 35% off. Sales tax of 8.75 % is applied to the discount price. We are asked to find the amount paid by Kurt for the watch.

First of all, we will find discounted price of watch by calculating 65% of original price as 100% minus 35% is 65%.

$\text{Discounted price of watch}=\$195\times \frac{65}{100}$

$\text{Discounted price of watch}=\$195\times0.65$

$\text{Discounted price of watch}=\$126.75$

Now we will add 8.75% of $126.75 to $126.75 to find price of watch after sales tax.

$\text{Price of watch after sales tax}=\$126.75+\$126.75\times \frac{8.75}{100}$

$\text{Price of watch after sales tax}=\$126.75+\$126.75\times 0.0875$

$\text{Price of watch after sales tax}=\$126.75+\$11.090625$

$\text{Price of watch after sales tax}=\$137.840625$

$\text{Price of watch after sales tax}\approx \$137.84$

Therefore, Kurt will pay $137.84 for the watch.

8 0

3 years ago

Which is the equation of a line that has a slope of -3 and passes through point

svetoff [14.1K]

Answer:

y + 1 = -3(x + 3)

y + 1 = -3x - 9

y = -3x - 10

6 0

3 years ago

LekaFEV [45]

Answer: C, 7.5

Step-by-step explanation: Since he can ring up 2 customers in 8 minutes, that would mean he can ring up 4 in 16 minutes. He could also ring up 6 in 24 minutes. He could do this since every two customers is 8 minutes. 4 minutes would mean he could do 1 customer and 2 minutes would be .5 customer. So, at 24 minutes he could ring 6 customers and a extra 6 minutes to 30 minutes would add 1.5 customers to a total of 7.5 customers in half an hour (30 minutes)

7 0

4 years ago

Plz..... Solve this questions for me...

faust18 [17]

$6.\\\text{We know}\ 9=3^2.\ \text{Therefore}\\\\9^2=(3^2)^2\\\\\text{use}\ (a^n)^m=a^{nm}\\\\9^2=(3^2)^2=3^{2\cdot2}=3^4\\\\\boxed{3^4=9^2}\\=================$

$7.\\METHOD\ 1:\\\\\sqrt{7^4}=\sqrt{7^{2\cdot2}}\\\\\text{use}\ (a^n)^m=a^{nm}\\\\=\sqrt{(7^2)^2}\\\\\text{use}\ \sqrt{a^2}=a\ \text{for}\ a\geq0\\\\=\boxed{7^2}\\\\METHOD\ 2:\\\\\text{use}\ a^\frac{m}{n}=\sqrt[n]{a^m}\\\\\sqrt{7^4}=7^\frac{4}{2}=\boxed{7^2}\\=================$

$8.\\5^a\times5^b=5^{11}\\\\a)\\\text{use}\ a^n\times a^m=a^{n+m}\\\\5^a\times5^b=5^{a+b}\\\\5^{a+b}=5^{11}\Rightarrow a+b=11\\\\11\ \text{is odd. The sum of even and odd is odd. Therefore}\ a\ \text{and}\ b\ \text{can't be even.}\\--------------------\\\\b)\\5\ \text{solutions}\\\\11=5+6\\11=4+7\\11=3+8\\11=2+9\\11=1+10$

3 0

3 years ago