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
ehidna [41]
2 years ago
8

Which equation is equivalent to x + 8 = 21? (x + 8) × 4 = 21 (x + 8) × 4 = 21 ÷ 4 (x + 8) × 4 = 21 × 2 (x + 8) × 4 = 21 × 4

Mathematics
1 answer:
Drupady [299]2 years ago
7 0

Answer:

(x + 8) × 4 = 21 × 4

Explanation:

x + 8 = 21

21 - 8 = 13

(13 + 8) × 4 = 21 × 4

21 × 4 = 21 × 4

84 = 21 × 4

84 = 84

You might be interested in
A bank in the Bay area is considering a training program for its staff. The probability that a new training program will increas
WITCHER [35]

Answer:

P(B' \cup A') = P((A \cap B)') = 1-P(A \cap B)= 1-0.32=0.68

See explanation below.

Step-by-step explanation:

For this case we define first some notation:

A= A new training program will increase customer satisfaction ratings

B= The training program can be kept within the original budget allocation

And for these two events we have defined the following probabilities

P(A) = 0.8, P(B) = 0.2

We are assuming that the two events are independent so then we have the following propert:

P(A \cap B ) = P(A) * P(B)

And we want to find the probability that the cost of the training program is not kept within budget or the training program will not increase the customer ratings so then if we use symbols we want to find:

P(B' \cup A')

And using the De Morgan laws we know that:

(A \cap B)' = A' \cup B'

So then we can write the probability like this:

P(B' \cup A') = P((A \cap B)')

And using the complement rule we can do this:

P(B' \cup A') = P((A \cap B)')= 1-P(A \cap B)

Since A and B are independent we have:

P(A \cap B )=P(A)*P(B) =(0.8*0.4) =0.32

And then our final answer would be:

P(B' \cup A') = P((A \cap B)') = 1-P(A \cap B)= 1-0.32=0.68

5 0
3 years ago
Please help I will mark brainlist if correct
djyliett [7]
Solving for L:

P = 2L + 2W
P - 2W = 2L
(P - 2W) / 2 = L
L = (P - 2W) / 2
8 0
2 years ago
3. Kanyla makes and
Triss [41]

Answer:

$23

Step-by-step explanation:

1 phone case = $12

4 phone cases = 12 * 4 = $48

Table = $25

4 phone cases - Table = 48 - 25 = $23

4 0
3 years ago
Read 2 more answers
I need help..................
Viktor [21]

Answer:

what is your favorite color

which subject do the students in my class like

what is the height of each student in my class

Step-by-step explanation:

7 0
3 years ago
A regular octagon with sides of length 7 and an apothem of length 10.49 has an area of how many square units
Ray Of Light [21]

Answer:

The area of the regular octagon is 293.72\ units^{2}

Step-by-step explanation:

we know that

The area of the regular polygon is equal to

A=\frac{1}{2}Pa

where

P is the perimeter of the regular polygon

a is the apothem

<em>Find the perimeter P</em>

P=8(7)=56\ units

Find the area

A=\frac{1}{2}(56)(10.49)=293.72\ units^{2}

6 0
3 years ago
Other questions:
  • The sides of a triangle measures 7,8, and 12. Which type of triangle is it?
    5·1 answer
  • Finding numbers divisible by 2 and 5 between two specific numbers
    14·1 answer
  • Math help pls, thank u
    6·2 answers
  • Help that one side is 2x-2
    7·1 answer
  • PLEASE HELP! Since AB=1 and 1=BC, BC=AB by which property?
    10·1 answer
  • What shapes can you divide figure into
    15·1 answer
  • Is this a pentagon or what?? Umm sorry I forgot I’ll giv ya brainliest to the first on ...I know I can search on the internet bu
    15·2 answers
  • Write an equation in point-slope form of the line that passes through the two points given. Use the
    9·1 answer
  • Solve the equation. -3(-7-x)=1/2(x+2).
    13·1 answer
  • 20 is 1/10 (one tenth) of what number?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!