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Bad White [126]
3 years ago
13

Write an equation, in simplified form, that represents the following scenerio. Brenda buys 15 shirts and at a 20% discount. She

spent a total of $105. How much did each shirt cost?
Mathematics
1 answer:
oee [108]3 years ago
6 0

Answer:

shirts-15

discount-20%

105:15=7

7×20/100=1.4

7+1.4=8.4

each shirt price is 8.4$

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A researcher studying microorganisms has discovered a strain of bacteria that doubles every 2.8 days. How many bacteria will the
Luden [163]

Answer:

3960.4 bacteria

Step-by-step explanation:

The formula to solve the above question is given as:

P(t) = Po (2) ^t/k

P(t) = Population after time t = ?

Po = Initial population = 650 bacteria

t = Time in days = 7.3 days

k = doubling time = 2.8 days

P(t) = 650 × (2)^7.3/2.8

P(t) = 650 × 2^2.6071428571

P(t) = 650 × 6.0929582599

P(t) = 3960.4228689 bacteria.

Approximately = 3960.4 bacteria

Therefore, the number of bacteria the researcher will have after 7.3 days if they started with 650 bacteria is 3960.4 bacteria.

4 0
3 years ago
I ate 4/9 of a ceral box how much ceral do i have left in the box
Solnce55 [7]

Answer:

5/9 of the cereal box.

Hope this helped! :)

7 0
3 years ago
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What is the value of k?<br><br> –36 = k – 6
kolezko [41]
Add 6 to both sides
Solution: k = -30
4 0
3 years ago
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Can someone please help me
Brrunno [24]
Hmmmm...... Are you a 6th grader? I remember doing these in 6th grade.
6 0
3 years ago
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A first number plus twice a second number is 13. Twice the first number plus the second totals 14. find the numbers​
sashaice [31]

Answer:

the first number is 5 the second number is 4

Step-by-step explanation:

first number = x

second number = y

X+2y=13 given this isolate x  x = 13-2y

2x+y=14 substitute 13-2y for x

2(13-2y)+y=14

26-4y+y=14

-3y=-12

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x+2(4)=13

x+8=13

x=5

4 0
3 years ago
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