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
Alekssandra [29.7K]
3 years ago
13

Keiko has scored 86, 91, 86, 61, and 87 on her previous five tests. what score does she need on her next test so that her averag

e (mean) is 84?
Mathematics
1 answer:
Andru [333]3 years ago
8 0
X= grade on next test

Add up all scores, divide by 6 and this equals the average of 84


(86 + 91 + 86 + 61 + 87 + x)/6= 84
add in parentheses

(411 + x)/6= 84
multiply both sides by 6

411 + x= 504
subtract 411 from both sides

x= 93


ANSWER: 93 is needed on the next test to have an average of 84

Hope this helps! :)
You might be interested in
Which of the following is an example of the associative property?
solniwko [45]

Answer:

Option 3 is the right one -7+(19+5)=(-7+19)+5

7 0
3 years ago
Read 2 more answers
Why are some rectangles not a square
RSB [31]

Answer:

Squares are defined by having all equivalent sides. Sometimes, rectangle have different lengths of side, thus not fitting the definition of a square. However, the definition of a rectangle is "an object with 2 pairs of sides parallel to eachother", therefore all squares fit the definition of a rectangle. Please mark brainliest :)

6 0
3 years ago
Read 2 more answers
IS triangle SAM ~ to triangle DEL? If so identify the similarity postulate or Theorem that applies
Anna11 [10]
The answer should be C) Similar - SAS
4 0
4 years ago
Read 2 more answers
How many books can be stacked on top of one another inside a cupboard 1.21 m high on the inside, knowing that the thickness of e
kvasek [131]

Answer:

10 books approx

Step-by-step explanation:

Step one:

Given data

Hight of cupboard= 1.21m

Thickness of book= 12.5cm

thickness in meters= 12.5/100= 0.125m

Required

The number of books need to fill the Cupboard

Step two:

the number of books can be computed as

= 1.21/0.125

=9.68 book

=10 books approx

4 0
3 years ago
HELPPPPPP PLS I DONT UNDERSTAND
____ [38]

Answer:

7.59<em> </em><em>m</em><em>^</em><em>2</em>

Step-by-step explanation:

<em>here</em><em>'s</em><em> </em><em>yo</em><em>ur</em><em> </em><em>sol</em><em>ution</em>

<em>=</em><em>></em><em> </em><em>Radius</em><em> </em><em>of</em><em> </em><em>circ</em><em>le</em><em> </em><em>=</em><em> </em><em>2</em><em>.</em><em>2</em><em> </em><em>m</em>

<em>=</em><em>></em><em> </em><em>we</em><em> </em><em>need </em><em>to </em><em>find</em><em> </em><em>out</em><em> </em><em>area</em><em> </em><em>of</em><em> </em><em>semici</em><em>rcle</em>

<em> </em><em> </em><em>=</em><em>></em><em> </em><em>area</em><em> </em><em>=</em><em> </em><em>1</em><em>/</em><em>2</em><em>π</em><em>r</em><em>^</em><em>2</em>

<em>=</em><em>></em><em>. </em><em>area</em><em> </em><em>=</em><em> </em><em>1</em><em>/</em><em>2</em><em>*</em><em>3</em><em>.</em><em>1</em><em>4</em><em>*</em><em>2</em><em>.</em><em>2</em><em>*</em><em>2</em><em>.</em><em>2</em>

<em>=</em><em>></em><em> </em><em>area</em><em> </em><em>=</em><em> </em><em>7</em><em>.</em><em>5</em><em>9</em><em> </em><em>m</em><em>^</em><em>2</em>

3 0
3 years ago
Other questions:
  • 2 Barbie is thinking of a number.
    14·2 answers
  • A rental car company chargea a flat daily fee plus a charge for each mile driven. A car rented for 5 days and driven for 300 mil
    11·1 answer
  • What is the value of logo 36?
    12·1 answer
  • A boy bought 3 cakes and 4 pies from a shop and received $7.50 change from $40. If he had bought 4 cakes and 3 pies from the sam
    6·1 answer
  • Is 2/6 4/12 equivalent or not equivalent
    5·1 answer
  • Solve for x. x+2+x=2
    15·1 answer
  • Which statements are true about the graph of y s 3x + 1 and y = -x + 2? Check all that apply.
    10·2 answers
  • 11. Write 343 with an exponent by using<br> 7 as the base.
    14·1 answer
  • If its height is y, then what polynomial represents the length of a side of the square base​
    13·1 answer
  • Due this Thursday.. help pls.​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!