$\dfrac{5}{8}(3k+1)-\dfrac{1}{4}(7k+2)=1\qquad\text{multiply both sides by 8}\\\\8\!\!\!\!\diagup^1\cdot\dfrac{5}{8\!\!\!\!\diagup_1}(3k+1)-8\!\!\!\!\diagup^2\cdot\dfrac{1}{4\!\!\!\!\diagup_1}(7k+2)=8\cdot1\\\\5(3k+1)-2(7k+2)=8\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\(5)(3k)+(5)(1)+(-2)(7k)+(-2)(2)=8\\\\15k+5-14k-4=8\qquad\text{combine like terms}\\\\(15k-14k)+(5-4)=8\\\\k+1=8\qquad\text{subtract 1 from both sides}\\\\k=7$

3 0

3 years ago

Add. Write your answers in simplest form.<br><br>10 1/6+12 1/10

Scrat [10]

334/15 also known as 22.26

5 0

4 years ago

Question is in picture

Vedmedyk [2.9K]

Answer:

C. 60%

Step-by-step explanation:

<u>Consider 1st row of table</u>

Total Price = P= 22.50

Discount=D=13.50

Percent discount=(D/P) x 100

=(13.5/22.5) x 100

= 60%

<u>Consider 2nd row of table</u>

Total Price = P= 27

Discount=D=16.20

Percent discount=(D/P) x 100

=(16.2/27) x 100

= 60%

Now we know discount rate is r=60%

8 0

3 years ago

Cuál es el resultado de -3%2<br>

Lemur [1.5K]

Answer:

El resultado es -1.5

Step-by-step explanation:

-3 ÷ 2 = -1.5

3 0

3 years ago