1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Illusion [34]
3 years ago
11

Evaluate the numerical expression below

Mathematics
1 answer:
Komok [63]3 years ago
3 0

Use PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

-----------------------------------------------------------------------

4.3+45\cdot2^2-53=4.3+45\cdot4-53=4.3+180-53=184.3-53=131.3

You might be interested in
The slope of a line that is parallel to each line whose equation is given
Kobotan [32]
Parallel lines, slope is the same so
1) 3x+8y = 12
8y = -3x + 12
  y = -3/8(x) + 3/2, slope = -3/8

slope of a line that is parallel = -3/8

2)5x+4y = 5
  4y = -5x + 5
    y = -5/4(x) + 5/4; slope is -5/4

slope of a line that is parallel = -5/4
--------------------
perpendicular, slope is opposite and reciprocal

3)
3x+8y = 11
 8y = -3x + 11
   y = -3/8(x) + 11/8. slope = -3/8
slope of perpendicular line = 8/3

4)
x = -7, slope is undefined
so slope of perpendicular line is 0

5)
3x+2y = 12
2y = -3x + 12
 y = -3/2(x) + 6 ; slope = -3/2

5x - 6y = 8
6y = 4x - 8
  y = 2/3(x) - 4/3; slope is 2/3

slope is opposite and reciprocal, so the equals are perpendicular

6)
3x + y = 5
y = -3x + 5; slope = -3

6x + 2y = -15
2y = -6x - 15 
y = -3x - 7.5; slope = -3

both have slope = -3 so equations are parallel

3 0
3 years ago
What is the equation of a vertical ellipse with a major axis= 20 and a minor axis = 14?​
Sunny_sXe [5.5K]

\bold{\text{Answer:  b.}\quad \dfrac{y^2}{100}+\dfrac{x^2}{49}=1}

<u>Step-by-step explanation:</u>

The ellipse is vertical so y has the biggest radius.

Major axis (y) = 20 so the y-radius is 20/2 = 10

Minor axis (x) = 14 so the x-radius is 14/2 = 7

The equation of an ellipse is:   \dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2}=1   where

  • (h, k) is the center of the ellipse
  • a is the x-radius
  • b is the y-radius

Given: a = 7, b = 10

Assume: (h, k) = (0, 0)

\dfrac{(x-0)^2}{7^2}+\dfrac{(y-0)^2}{10^2}=1\\\\\\\dfrac{x^2}{49}+\dfrac{y^2}{100}=1\\\\\\\longrightarrow \dfrac{y^2}{100}+\dfrac{x^2}{49}=1

6 0
2 years ago
Solve 5x − 6y = −38 <br> 3x + 4y = 0
Gnesinka [82]
Is that one or two questions?

5 0
3 years ago
an entrepreneur buys some microscopes. Each one costs $700 and resells online for $959. What percentage is the mark-up?​
tester [92]

Answer:

72.99%

Step-by-step explanation:

7 0
2 years ago
Help!! Giving brainless need help
charle [14.2K]

Answer:

A. 15

Step-by-step explanation:

V of a right prism which this is. Is LxWxH

So 1.5x 4x2.5=15

4 0
3 years ago
Read 2 more answers
Other questions:
  • which equation represents a linear function? equation 1: y = 2x2 1 equation 2: y2 = 3x 1 equation 3: y = 5x – 1 equation 4: y =
    14·1 answer
  • Answer These For Me Please, I’d Really Really Appreciate It So Much :), Appropriate Answers Only!!!
    8·1 answer
  • Help with rate question plz. Check my answer I got d. Idk if it’s correct and show your work if my answer’s wrong or correct
    7·2 answers
  • Can someone help with this question
    11·2 answers
  • DOES ANYONE KNOW IMAGINE MATH????? Please help ASAP would be HELPFUL!!! Thannks!!!!!!!!!!
    10·2 answers
  • Select the equation written in slope intercept form
    14·1 answer
  • Find the value of y. –2y + 16 + 6y = 44
    15·1 answer
  • Solve the system of linear equations by graphing y = -4x + 2 ; y = -x - 1 <br> What is the solution?
    14·1 answer
  • Use the properties and mental math to solve. Enter your answer in the simplest form.
    13·1 answer
  • From the figure, your friend concludes that m&lt;BAD &gt; m&lt;BCD. How would you correct your friend's mistake?​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!