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3 years ago

Math help !! will mark brainliest

Mathematics

1 answer:

Nataly [62]3 years ago

3 0

Answer:

y = 2 x - 1

Hope this helps :)

Have a great day !

5INGH

Step-by-step explanation:

When x = 1 , y= 1

x = 2 , y=3

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The model represents a polynomial of the form ax2 + bx + c. Which equation is represented by the model?

Maru [420]

Consider the given table.

The first row represents first term (first brackets):

+x+x+x-1=3x-1

The first column represents second term (second brackets):

+x-1=x-1

The product of (3x-1) and (x-1) is equal to the sum of all remaining terms in this table:

+x²+x²+x²-x-x-x-x+1=3x²-4x+1.

Therefore, 3x²-4x+1=(3x-1)(x-1).

Answer: correct choice is C.

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3 years ago

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The original sales price of a jacket to the original price is 3:4. The original price is $64 what is the sales price

natka813 [3]

So we need to find a number that has the same ratio to 64 as 3 has to four. We do this by diving 64 into 4:(this is 16): so the two ratios are different by 16. To find the remaining number we multiply 3 by 16: this is 48. So 48 has the same ratio to 64 as 3 has to 4.

And 48 is the answer!

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3 years ago

A medical researcher needs 37 people to test the effectiveness of an experimental drug. If 101 people have volunteered for the t

Rashid [163]

Answer:

The number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!\cdot (n-k)!}$

Compute the number of ways to select 37 people from 101 as follows:

${101\choose 37}=\frac{101!}{37!\cdot (101-37)!}$

$=\frac{101!}{37!\times 64!}\\\\=\frac{101\times 100\times 99\times....64!}{37!\times 64!}\\\\=5397234129638871133346507775$

Thus, the number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

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3 years ago

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What is 98.43 as a fraction?

Elena L [17]

98.43 = 98 43/100 = (98 * 100 + 43) / 100 = 9843/100
98 is ur whole number....now look at ur numbers to the right of the decimal....what place is ur 3 in ? The 4 is in the tenths place....the 3 is in the hundredths place....so that makes it 43/100...now include ur whole number...so its 98 43/100...now if u don't want a mixed number...change it to an improper fraction which would be 9843/100.

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3 years ago