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nevsk [136]
3 years ago
13

A tumor in a rat responds to a new radiation treatment by shrinking 5% with each treatment. How many treatments before the tumor

has shrunk to a quarter of its original size?
Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0
A quarter of its original size would be 25% of 100%, right? Therefore, the tumor would have to shrink 75%. If each treatment, the tumor shrinks 5% that would mean it takes 15 treatments to shrink 75 percent. 

If this helped, please thank, rate, and give brainliest answer!
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Write an equation for the line of best fit that models the relationship between profit in thousands, p, and time in months, m. T
Ymorist [56]
This is much easier when you use a software like MS Excel. You have to list the points first. These are: (1,3), (2,2.5), (3,4), (4,5), (5,6.5), (6,5.5), (7,7), (8,6), (9,7.5), (10,7) and (11,9).

Do a scatter plot for this points and add a trend line and you obtain the equation of the line fit. The equation is p=0.6m+2.4

We use this equation to find p when m=12.

p = (0.6×12)+2.4
p = 9.6

Total profit in month 12 would be 9.6 thousand.

8 0
3 years ago
What is the slope intercept
Andreas93 [3]

Answer:

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Step-by-step explanation:

Slope intercept form is a type of way to display an equation.

The variable m represents slope. Slope is the angle of the line.

The variable b represents the Y-intercept. This is the point where the line crosses the Y axis..

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jasenka [17]
Before i try and answer this do u have a graph
8 0
3 years ago
X=7 -2x+10<br> What does this equal?
mote1985 [20]

Step-by-step explanation:

Since X is given to you (in this case, it’s 7), all you have to do is plug it into the equation.

1. -2(7) + 10

When a variable or a number is directly outside a number, it means you should multiply the two numbers, no matter what.

Now that we know this: -2 * 7 = (-14) When a negative is multiplied by a positive, it turns out negative.

2. (-14) + 10: Let’s say (for instance), that I owe 14 dollars to a friend. If I pay 10 of it, how much do I owe my friend? It would be -4 because you’re still in debt, and haven’t payed your friend all of her 14 dollars back.

3. You should come up with an answer of (-4) because of all of the steps given.

If something doesn’t make sense, please make a note of it and tell me. Otherwise, have a splendid day.

6 0
3 years ago
Read 2 more answers
The ratio of the cost of a tennis racket ro tennis balls is 18:1. If a can of balls cost $5.35, what is the cost of the racket?
siniylev [52]

Multiply the ratio by $5.35

racket : balls = 18×$5.35 : 1×$5.35 = $96.30 : $5.35

The racket costs $96.30.

5 0
3 years ago
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