Ask question

Ask question

All categories

3 years ago

7

What is a numerical expression?

2 answers:

lyudmila [28]3 years ago

8 0

Answer:

The term 'numerical' means 'involving numbers' and the term 'expression' means 'phrase'. A numerical expression is a mathematical phrase involving only numbers and one or more operational symbols.

blondinia [14]3 years ago

4 0

Answer:

The term 'numerical' means 'involving numbers' and the term 'expression' means 'phrase'. In other words, it is just a phrase/ equation with numbers not letters.

Example 2+4=6

NOT 3a+4a=7a

Happy Holidays!

You might be interested in

A lake polluted by bacteria is treated with an antibacterial chemical. Aftertdays, thenumber N of bacteria per milliliter of wat

jeyben [28]

Answer:

N(1)=50 is a minimum

N(15)=4391.7 is a maximum

Step-by-step explanation:

<u>Extrema values of functions </u>

If the first and second derivative of a function f exists, then f'(a)=0 will produce values for a called critical points. If a is a critical point and f''(a) is negative, then x=a is a local maximum, if f''(a) is positive, then x=a is a local minimum.

We are given a function (corrected)

$N(t) = 20(t^2-lnt^2)+ 30$

$N(t) = 20(t^2-2lnt)+ 30$

(a)

First, we take its derivative

$N'(t) = 20(2t-\frac{2}{t})$

Solve N'(t)=0

$20(2t-\frac{2}{t})=0$

Simplifying

$2t^2-2=0$

Solving for t

$t=1\ ,t=-1$

Only t=1 belongs to the valid interval $1\leqslant t\leqslant 15$

Taking the second derivative

$N''(t) = 20(2+\frac{2}{t^2})$

Which is always positive, so t=1 is a minimum

(b)

$N(1)=20(1^2-2ln1)+ 30$

N(1)=50 is a minimum

(c) Since no local maximum can be found, we test for the endpoints. t=1 was already determined as a minimum, we take t=15

(d)

$N(15)=20(15^2-2ln15)+ 30$

N(15)=4391.7 is a maximum

7 0

3 years ago

There is 20 students in mr.millers algebra class. 14 of the students are females. if mr.miller selects a student at random, what

Romashka [77]

7/10 or 70%!!

Hope this helps (:

5 0

3 years ago

A rectangular prism with a volume of 10 cubic units is filled with cubes with side lengths of 1/2

Katarina [22]

The answer is 5 Bc it’s half of ten

7 0

4 years ago

What is the value of x? x+45=11 Enter your answer in the box in simplest form.

Ksivusya [100]

Isolate the x. Note the equal sign. What you do to one side, you do to the other. Subtract 45 from both sides

x + 45 (-45) = 11 (-45)

x = 11 - 45

x = -34

-34 is your answer

hope this helps

8 0

3 years ago

Read 2 more answers

Solve for b. 2/3 b + 5 = 20 - b

Arisa [49]

Answer:

b = 9

Step-by-step explanation:

Step 1: Add <em>b</em> on both sides (Addition Equality)

5/3b + 5 = 20

Step 2: Subtract 5 on both sides (Subtraction Equality)

5/3b = 15

Step 3: Divide both sides by 5/3 (Division Equality)

b = 9

6 0

3 years ago