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murzikaleks [220]
2 years ago
11

Sally has 13 baseball cards in each week her grandpa bring 7 more sally created this equation y=7x +13 use the equation to answe

r the following questions explain what the slope means in this situation
Mathematics
1 answer:
fiasKO [112]2 years ago
5 0

Answer:

13 means the starting number

13 is the y-intercept (0,13)

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I need help with #39-42, please explain.
shusha [124]

For question 39 & 40, we need to use the below equation to complete the sentence

l=m\sqrt{n}

Question 39:

When ' n ' increase, the \sqrt{n} will also increase and that multiplied with constant ' m ', the l will also increase.

Solution for question 39:

As n increases and m stays constant , l <u>increases</u>

-------

Question 40:

Solving the equation for m, we get

l = m\sqrt{n} \\ \\ m=\frac{l}{\sqrt{n}}

When ' l ' increases, the numerator increase, the denominator stays constant because 'n' stays constant, for this condition, the fraction increases.

Solution for question 40:

As l increase and n stays constant, m <em><u>increases</u></em>

------

For question 41 & 42, we need to use the below equation to complete the sentence

r=s^2/t^2

Question 41:

When s is triped, the equation will be...

r=(3s)^2/t^2=\frac{3^{2}s^{2}}{t^2}   =9s^2/t^2

Solution for question 41:

If s is tripled and t stays constant, r is multiplied by <em><u>9</u></em>

--------

Question 42:

When t is doubled, the equation will be...

r=s^2/(2t)^2=\frac{s^2}{2^2 \cdot t^2}=\frac{s^2}{4t^2}\\   \\ r=0.25s^2/t^2 \; \; (or) \; \; \frac{1}{4} \cdot \frac{s^2}{t^2}

Solution for 42:

If t doubled and s stays constant, r is multiplied by <em><u>1/4 or 0.25</u></em>


3 0
3 years ago
Please help fast i will give you the most Brainly <br><br><br> what would n = 3(n+7)=48
neonofarm [45]

Answer:

n = 9

Step-by-step explanation:

3(n+7)=48

distribute

3n +21 = 48

subtract 21 from each side

3n = 48-21

3n = 27

divide by 3

3n/3 = 27/3

n = 9

5 0
3 years ago
Y=4x-9 <br> complete the missing value in the solution to the equation <br> (3,__)
kozerog [31]
So we need to plug in our values so now y=4(3)-9 so 4*3 is 12 now we have y=12-9 Subtract 12 and nine to get 3 so y equals 3.
The answer is (3, 3). Hope this helped please look at others answers and check other resources as well
5 0
2 years ago
Read 2 more answers
The number of cars at a dealership dropped from 64 to 48 after a weekend sale.
Mariana [72]

Answer:

25%

Step-by-step explanation:

{(whole- part)/whole}*100%

(64 -48)/64 *100%= 25%

8 0
3 years ago
Read 2 more answers
A chemist is using 333 milliliters of a solution of acid and water. If 17.2% of the solution is acid, how many milliliters of ac
lozanna [386]
57 milliliters of acid
8 0
2 years ago
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