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tankabanditka [31]
2 years ago
8

On a test of 80 items, Ariel got 59 correct. What percent were correct? a. 73. 75% c. 135. 59322% b. 1. 3559322% d. 0. 7375%.

Mathematics
1 answer:
Mila [183]2 years ago
3 0
you divide 59% from 80 and is 7375=73
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Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Select two options. y
andriy [413]

Answer:

Step-by-step explanation:

We want a line parallel to 3x − 4y = 7.  Any such line will have an equation of the same form but a different constant.

If the new line is to pass through the point (-4, -2), replace x with -4 and y with -2.  We obtain:

3(-4) − 4(-2) = -12 + 8 = -4.  Thus, the desired new equation is 3x − 4y = -4.

This could also be written as 3x − 4y + 4 = 0.  We could also solve this for y, obtaining:

3x + 4 = 4y, or  y = (3/4)x + 1.

8 0
3 years ago
Read 2 more answers
Write an example of an equation that’s represents exponential decay
seropon [69]

The equation for exponential decay is given as y = a(1 - r)^x.

<u>Explanation:</u>

The formula for original exponential decay is y = ab^x.

The growth rate (r) is determined as b = 1 + r.

The decay rate (r) is determined as b = 1 - r.

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y = a(1-r)^x

a represents the initial value

r represents growth or decay rate

x represents the number of time intervals that have passed.

<em>For example</em>

The population of Home Town is 2016 was estimated to be 35,000 people with an annual rate of increase of 2.4%.

The equation for decay factor y = 35000(1 - 0.024)^x

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7 0
3 years ago
Beth has 250 comic books in her collection. She begins to sell 20 of them each week. Martin has 80 comic books in his collection
guapka [62]

Answer:

250 - 20 < 80 + 15x

Step-by-step explanation:

Given that

Beth has 250 books and 20 books sold each week

While on the other hand, Martin has 80 books and sell 15 books each week

Let us assume each week be x

Now the equations are  

Beth         250 - 20x            

Martin       80 + 15 x

Now the inequality would be

250 - 20 < 80 + 15x

8 0
3 years ago
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Inessa [10]

Answer:

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Using the distributive property, we have:

(x + 1 + i)(x+ 1 - i) = x^2 + x - ix + x + 1 - i + ix + i + 1

Combining like-terms and simplifying:

⇒ x^2 + x + x + 1   + 1 = x^2 + 2x + 2 = 0

Therefore, the stament is correct. If the roots of an equation are x = -1 ± i, then the equation is: x^2 + 2x + 2 = 0.

5 0
3 years ago
3•(1+2)^2-4^2 evaluate
hammer [34]

Answer:

11

Step-by-step explanation:

3*(3)^2-16

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3 0
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