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Firdavs [7]
3 years ago
9

Lindsey completed a 30 point assignment. she eared 21 points what percent did she earn?

Mathematics
2 answers:
Virty [35]3 years ago
6 0

Answer:

She earned a seventy percent.

Step-by-step explanation:

You set the problem up like  21/30 = x/100.

Then, you cross multiply and you get 30x=2100.

From there, you divide each side by thirty and then you get x = 70.

And that brings you to 70 percent. Hope this helps!

lana66690 [7]3 years ago
4 0

Answer:

Lindsey got 70% on this assignment.

Step-by-step explanation:

21 divided by 30 equals 0.7 which is 70% in percent form.

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Which of the following is a good way to quickly determine whether 3/12 and 1/4 are equal​
Novay_Z [31]

Answer: Divide 3 into the numerator and denominator

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Unit activity: exponential and logarithmic functions
nirvana33 [79]

We will conclude that:

  • The domain of the exponential function is equal to the range of the logarithmic function.
  • The domain of the logarithmic function is equal to the range of the exponential function.

<h3>Comparing the domains and ranges.</h3>

Let's study the two functions.

The exponential function is given by:

f(x) = A*e^x

You can input any value of x in that function, so the domain is the set of all real numbers. And the value of x can't change the sign of the function, so, for example, if A is positive, the range will be:

y > 0.

For the logarithmic function we have:

g(x) = A*ln(x).

As you may know, only positive values can be used as arguments for the logarithmic function, while we know that:

\lim_{x \to \infty} ln(x) = \infty \\\\ \lim_{x \to0} ln(x) = -\infty

So the range of the logarithmic function is the set of all real numbers.

<h3>So what we can conclude?</h3>
  • The domain of the exponential function is equal to the range of the logarithmic function.
  • The domain of the logarithmic function is equal to the range of the exponential function.

If you want to learn more about domains and ranges, you can read:

brainly.com/question/10197594

3 0
2 years ago
Please help me thank you
Olenka [21]

Step-by-step explanation:

6 \sqrt{2}

this is the answer

4 0
3 years ago
When using the power rule, the original coefficient:__________a) Is multiplied by the original exponent.b) Only changes if the f
sleet_krkn [62]

Answer:

a) Is multiplied by the original exponent.

Step-by-step explanation:

the power rule works like this:

you want to find the derivative of ax ⁿ

where n is the exponent and a is the coefficient

the derivative would equal (n ⋅ a)xⁿ⁻¹

e.g. you want to find the derivatives of 5x⁴

f'(x) = (4 ⋅ 5)x⁴⁻¹ = 20x³

f''(x) = (3 ⋅ 20)x³⁻¹ = 60x²

f'''(x) = (2 ⋅ 60)x²⁻¹ = 120x

f''''(x) = (1 ⋅ 120)x¹⁻¹ = 120

7 0
3 years ago
Find the sum. Enter your answer in lowest terms.<br> 7/20 + 3/9
AlekseyPX
7/2+3/9=
(7+3)+(0.2+0.9)=
10+1.1=11.1
5 0
3 years ago
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