All categories

1 year ago

Which of the following is equal to the expression listed below? 30 + 20

Mathematics

1 answer:

Free_Kalibri [48]1 year ago

4 0

Answer:

Step-by-step explanation:

30 + 20 first you add 0 + 0 = 0 now you has 3 + 2 = 5 put them togeter 50

You might be interested in

What is 2 and 6/7 times 4/5

bulgar [2K]

Answer:

Step-by-step explanation:

2 6/7 * 4/5....turn ur mixed number into an improper fraction and just multiply

20 / 7 * 4 / 5 = 80/35 which reduces to 16/7 or 2 2/7

4 0

2 years ago

Solve the following system of equations. <br> 2x + y = 3 <br> x = 2y - 1

Shalnov [3]

2(2y-1)+y=3
y=1
x=2 x1 - 1
x=1

7 0

2 years ago

Read 2 more answers

A professor grades students on four tests, a term paper, and a final examination. Each test counts as 15% of the course grade. T

alina1380 [7]

Answer:

The Alans's average for the course is 84.5

Step-by-step explanation:

We are given

There are 4 tests, A Term paper and a Final examination.

Score = 92, 78, 82, 90.

Term paper score = 80

Final examination score = 86

Weighted mean = ∑ w.f/∑w

also the sum of all the weights is 100% = 1

weighted mean = 15%*92 + 15%*78+15%*82+15%*90+20%*80+20%*86/1

= 51.3 + 33.2

= 84.5

Therefore the Alans's average for the course is 84.5

5 0

2 years ago

10 POINTS HELP PLEASE HURRY !!!

Blizzard [7]

Answer:

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Simplify the square root of 3 times the fifth root of 3.

bogdanovich [222]

Answer:

<h2><em>Three to the three fifths power.</em></h2>

Step-by-step explanation:

The given expression is

$\sqrt{3\sqrt[5]{3} }$

To simplify this expression, we have to use a specific power property which allow us to transform a root into a power with a fractional exponent, the property states:

$\sqrt[n]{x^{m}}=x^{\frac{m}{n}}$

Applying the property, we have:

$\sqrt{3\sqrt[5]{3}}=\sqrt{3(3)^{\frac{1}{5}}}=(3(3)^{\frac{1}{5}})^{\frac{1}{2}}$

Now, we multiply exponents:

$(3(3)^{\frac{1}{5}})^{\frac{1}{2}}\\3^{\frac{1}{2}}3^{\frac{1}{10}}$

Then, we sum exponents to get the simplest form:

$3^{\frac{1}{2}}3^{\frac{1}{10}}=3^{\frac{1}{2}+\frac{1}{10}} =3^{\frac{10+2}{20}}=3^{\frac{12}{20}} \\\therefore \sqrt{3\sqrt[5]{3}}=3^{\frac{3}{5} }$

Therefore, the right answer is <em>three to the three fifths power.</em>

3 0

2 years ago

Read 2 more answers