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2 years ago

The price of jeans was reduced $6 per week for 7 weeks. By how much did the price of the jeans change over the 7 weeks?

1 answer:

6 0

The price dropped by forty two dollars. We can work this out by simply multiplying six, the number that we know the jeans were reduced by each week, by seven, the number of weeks that the jeans continued to reduce in price for. Six times seven is of course forty two.

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Solve using Quadratic Formula x^2 + 3x - 3 = 0

katrin [286]

Answer:

a= 1 , b= 3 , c= –3

$x = \frac{ - b \frac{ + }{} \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{ - 3 \frac{ + }{} {} \sqrt{ {3}^{2} - 4(1)( - 3)} }{2(1)} \\ = \frac{ - 3 \frac{ + }{} \sqrt{9 + 12} }{2} = \frac{ - 3 \frac{ + }{} \sqrt{21} }{2} \\ \\ x = \frac{ - 3 \frac{ + }{} \sqrt{21} }{2} \\ \\ x = 0.79 \\ x = - 3.79$

I hope I helped you^_^

4 0

2 years ago

Betty's grade in science class is affected by the number of missing assignments. The table below shows the science grade percent

Angelina_Jolie [31]

Hi!

$y=-5x+95$

Plug in $15$ for $x$

$y=-5(15)+95$

Multiply $-5$ and $15$

$y=-75+95$

Add $-75$ and $95$

$y =15$

-------------------------------------------------------------------------------------------------------------

Betty's percentage is 15%.

The rate of change is the amount it changes for every missing assignment, therefore it would be -5.

5 0

2 years ago

A recipe calls for 12 cups of blueberries to make 7 jars of blueberry jam.

Illusion [34]

Answer:

Each jar has 12/7 cups of blueberries.

Step-by-step explanation:

To find out how many cups of blueberries per jar, we take the number of cups of blue berries and divide by the number of jars

12 cups/7 jars

12/7 cups of blueberries per jar

Each jar has 12/7 cups of blueberries.

4 0

2 years ago

Sage is 7 years older than Jonathan. If Jonathan is x years old, how old was Sage 10 years ago?

Natalija [7]

Answer:

(x-3) years

Step-by-step explanation:

We are given that

Age of Jonathan= x years

Sage is 7 years older than Jonathan

It means

Age of Sage=(x+7) years

We have to find the age of Sage 10 years ago.

10 Years ago,

Age of Jonathan=(x-10) years

Age of Sage=(x+7-10) years

Age of Sage=(x-3) years

Hence, 10 years ago, age of Sage =(x-3) years

4 0

2 years ago

20 km is how many dam

ZanzabumX [31]

Hello!

OK, so we need to find out 20 km = ? dam

What we know:
1 km = 100 dam

Now, lets multiply to get our answer:

20 × 100 = 2,000

This tells us that 20 km = 2,000 dam

Check:

2,000 ÷ 20 = 10

This tells us that we are CORRECT!

Answer: 20 km = 2,000 dam

Hope this helps! Good luck! (:

3 0

2 years ago