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
Mandarinka [93]
3 years ago
13

Select the problem that would help you use the distributive property to simplify the expression. Which shows the distributive me

thod?
14(4x + 8)
Question options are:

A. 14(4x) + 14(8)

B. 14 + 4x + 14 + 8
Mathematics
2 answers:
Tju [1.3M]3 years ago
5 0
Choice A shows the distributive property
ella [17]3 years ago
3 0

Answer:

A

Step-by-step explanation:

A. shows what the expression shows in a different format. you preform the multiplication step on either one and you get the same thing.

You might be interested in
Find integrate (1/(xsqrt(1+(lnx)^2)),1,e,x) ...?
prohojiy [21]
Note that x² + 2x + 3 = x² + x + 3 + x. So your integrand can be written as 

<span>(x² + x + 3 + x)/(x² + x + 3) = 1 + x/(x² + x + 3). </span>

<span>Next, complete the square. </span>

<span>x² + x + 3 = x² + x + 1/4 + 11/4 = (x + 1/2)² + (√(11)/2)² </span>

<span>Also, for the x in the numerator </span>

<span>x = x + 1/2 - 1/2. </span>

<span>So </span>

<span>(x² + 2x + 3)/(x² + x + 3) = 1 + (x + 1/2)/[(x + 1/2)² + (√(11)/2)²] - 1/2/[(x + 1/2)² + (√(11)/2)²]. </span>

<span>Integrate term by term to get </span>

<span>∫ (x² + 2x + 3)/(x² + x + 3) dx = x + (1/2) ln(x² + x + 3) - (1/√(11)) arctan(2(x + 1/2)/√(11)) + C </span>

<span>b) Use the fact that ln(x) = 2 ln√(x). Then put u = √(x), du = 1/[2√(x)] dx. </span>

<span>∫ ln(x)/√(x) dx = 4 ∫ ln u du = 4 u ln(u) - u + C = 4√(x) ln√(x) - √(x) + C </span>

<span>= 2 √(x) ln(x) - √(x) + C. </span>

<span>c) There are different approaches to this. One is to multiply and divide by e^x, then use u = e^x. </span>

<span>∫ 1/(e^(-x) + e^x) dx = ∫ e^x/(1 + e^(2x)) dx = ∫ du/(1 + u²) = arctan(u) + C </span>

<span>= arctan(e^x) + C.</span>
4 0
3 years ago
2. Kelsea needs a test average of at least 90 to get an "A-" this marking period in math. Her three test grades
Luda [366]

Answer:

<u>Equation:  87 + 91 + 86 + x = 360</u>

<u>Solution: 264 + x = 360</u>

<u>x = 360 - 264</u>

<u>x = 96</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

First three Kelsea's test grades : 87, 91 and 86

2. What score must she get on her fourth test to receive at least an A- ?

Define variable:  x that represents the grade needed by Kelsea on her fourth test to receive at least an A-

Equation:  87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

<u>Now you can understand if the previous work you did is correct</u>

6 0
3 years ago
Solve for x<br>Please HELPPPPPPPPPPPPPPPPP ME ILL GIVE YOU BRAINLY
valina [46]
<h3>Answer:</h3>

x = 2

<h3>Explanation:</h3>

The rule for secants is that the product of segment lengths (on the same line) from the point of intersection to the points on the circle is a constant for any given point of intersection. Here, that means ...

... 3×(3+5) = 4×(4+x)

... 6 = 4+x . . . . divide by 4

... 2 = x . . . . . . subtract 4

_____

<em>Comment on this secant relationship</em>

Expressed in this way, the relationship is true whether the point of intersection is inside the circle or outside.

5 0
3 years ago
Read 2 more answers
Perform the requested operation or operations.
alukav5142 [94]
f(x) = \frac{x-3}{5}
g(x) = 5x+3
g(f(x)) = 5(\frac{x-3}{5})+3 = x-3+3 = x

EDIT:
f(g(x))=\frac{(5x+3)-3}{5}=\frac{5x+0}{5}=\frac{5x}{5}=x
4 0
3 years ago
PLS HELP I WILL MARK BRAINLIEST (EDITED)
Vinvika [58]

Answer:

51.9

Step-by-step explanation:

because one side is 30 and another is 60, you can assume the 3rd side of the triangle is 51.9 because of the 30-60-90 rule which states that if each angle of a triangle is 30, 60, and 90, then the side lengths equal x (30), 2x (60), and x√(3) (~51.9).

7 0
3 years ago
Other questions:
  • What is the exponent for 100,000
    15·2 answers
  • A 208-long road is divided into 16 parts of equal length.Mr.Ward paints a 4-meter-long strip in each part.How many total meters
    8·2 answers
  • Find the surface area of a grapefruit with a circumference of 14 cm. Round your answer to the nearest whole number.
    7·2 answers
  • Please answer correctly !!!!! Will mark brainliest !!!!!!!!!
    5·2 answers
  • A right circular cylinder has a base radius of 6 centimeters and a height of 12 centimeters. What is the volume of this cylinder
    9·1 answer
  • Brian made 5 free throws at basketball practice. Ethan scored 3 more than twice the number of free throws Brian made. What equat
    10·2 answers
  • Please help me with this
    6·1 answer
  • John is paid at an hourly-rate of $15 an hour and overtime time rate of 1.5 times
    13·1 answer
  • What is 40 tens 4 tenths 80 hundredths and 102 thousandths
    11·2 answers
  • 1/4 xy if x = -2/3 and y = 3/5
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!