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KIM [24]
3 years ago
8

Marsha swam 400 meters in 6 minutes and 12 seconds. Convert that time to minutes.

Mathematics
1 answer:
olasank [31]3 years ago
7 0

Answer:

6 minetes? how does this work?

Step-by-step explanation:

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Select all the expressions that are equivalent to 7(2 - 3n).
Free_Kalibri [48]

Answer:

\boxed{c. \: 14 - 21n \: \: \: \: and \: \: \: \: d. \:  (2 - 3n) \times 7}

Step-by-step explanation:

7(2 - 3n) =  (2 - 3n) \times 7\\  \\  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: =(7 \times 2) - (7 \times 3n) \\  \\  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = 14 - 21n

5 0
3 years ago
Your class is selling boxes of flower seeds as a fundraiser. The total profit p depends on the amount x that your class charges
Slav-nsk [51]

Answer:

$ 22.6

Step-by-step explanation:

Given that

Price charged for each box of seeds = x

Profit gained from from selling boxes of seeds = p

The equation of profit is modeled as

P(x) = 0.5x² + 36x - 179

As per given information if the fundraisers make a profit of  $379 then find the minimum price charged for each box of seed.

Now our above equation becomes

379 = -0.5x² + 36x - 179

Simplifying

379+179 = -0.5x² + 36x

558 = -0.5x² + 36x

0.5x² - 36x + 558 =0

multipying both sides of equation by 2

2(0.5x² - 36x + 558) = 2x0

x² - 72x +1116 = 0

Using quadratic formula we get the following factors

x= 49.4 or x= 22.60

As we can the smalles value is 22.6

So, they can charge 22.6 dollar for each bag of seeds in order to get profit of 379 dollars.



8 0
3 years ago
Read 2 more answers
Write 3 2/5 as a single fraction
Alex17521 [72]

Answer:

17/5

Step-by-step explanation:

hskydbsiydbksigsbsk

4 0
2 years ago
Read 2 more answers
Help for 13-15 pls and explain for 15
Pani-rosa [81]
13. 1
14. 1
15. any number and 0 will have a quotient of 0.
for example 7/0=0 .     8/0=0 .    9/0=0
if you try and check your work using multiplication 7*0=0 .    8*0=0 .    9*0=0
then you will realize the rule is right
4 0
4 years ago
suppose that you're building a shed and me to pour concrete slab to support it. You know that the slab will be 15 feet wide, 10
andrezito [222]
Convert all to one unit - I'm choosing feet
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1 cubic yard  =  1 yard x 1 yard x 1 yard = 3 ft x 3 ft x 3 ft = 27 feet?

75/27 = 2.77777778 cubic yards (I think)
7 0
3 years ago
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