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
Stels [109]
3 years ago
8

A student’s standardised mark on a class test was z = –1.7. The mean mark for the class is 55 and the standard

Mathematics
1 answer:
Karolina [17]3 years ago
7 0
The answer is 58, standard deviation is basically telling you that the space between each point in your statistics is on average that amount so that can tell us to take the mean mark of 55 and add 2.85 = 57.85
You might be interested in
Someone please help me with this question please
iris [78.8K]

Answer:

32

Step-by-step explanation:

<em>The ray created by line BC has two </em><u><em>180° sides</em></u><em>. Side </em><em>AC</em><em> intersects this ray and forms two angles. We can find this second angle by subtracting </em><em>148 </em><em>from </em><em>180 </em><em>to get </em><em>32</em><em>.</em>

5 0
3 years ago
Read 2 more answers
if you deposit $10000 at 11%(simple interest), how long will it be until the total amount in the account is $21000?
ki77a [65]

10000:100*11=1100  income per year

21000-10000=11000 need to have income

11000:1100=10 years will pass time

4 0
3 years ago
In a wrestling contest, a wrestler needs a winning percentage of at least 70% to qualify for round 2. sam lost 3 out of 12 match
algol [13]
He won about 25% because 6/12 would be 1/2 and 3 is 1/2 of 6 or a 1/4 so 25%
8 0
3 years ago
I struggle in math, and occasionally I'll confuse the questions I try to answer
Alex17521 [72]
15X=12X+12
Subtract 12X
3X=12
X=4
3 0
3 years ago
The answer is 48 can someone explain how?
mestny [16]

Answer:

<h2>48</h2>

Step-by-step explanation:

(1)

apple × apple × 2apple = 54

2apple³ = 54    <em>divide both sides by 2</em>

apple³ = 27 → apple = ∛27

apple = 3

(2)

apple + apple × green_apple = 24   <em>substituite apple = 3</em>

3 + 3 × green_apple = 24        <em>subtract 3 from both sides</em>

3 × green_apple = 21         <em>divide both sides by 3</em>

green_apple = 7

(3)

strawberry - bannana - banana = 0 → strawberry = 2banana

(4)

strawberry + banana + cherry = 24     <em>substitute from (3)</em>

2banana + banana + cherry = 24

3banana + cherry = 24

(5)

apple + banana - cherry = -1          <em>substitute apple = 3</em>

3 + banana - cherry = -1         <em>subtr3 from both sides</em>

banana - cherry = -4

Add both sides of (4) and (5)

 3banana + cherry = 24

<u>+banana - cherry = -4       </u>

4banana = 20       <em>divide both sides by 4</em>

banana = 5

Substitute it to (4):

3(5) + cherry = 24

15 + cherry = 24      <em>subtract 15 from both sides</em>

cherry = 9

Substitute to the last equation:

3 + 5 × 9 = 3 + 45 = 48

/USED PEMDAS/

7 0
3 years ago
Other questions:
  • the left and right page numbers of an open book are two consecutive integers whose sum is 589. find these page numbers
    5·1 answer
  • For which function is the domain
    15·1 answer
  • How to find the equation
    5·1 answer
  • Need help with the question in the picture learned awhile ago and forget!
    13·1 answer
  • 30 = X-8<br> One step equation
    5·1 answer
  • 15(1-3)<br> 5<br> 3(2x - 3)<br> Solve the equation by using the distributive property first.
    10·1 answer
  • Which of the following represents the probability that someone who
    9·1 answer
  • Find the area of each figure. Round your answers to the nearest hundredth 11-12​
    15·1 answer
  • 5. Joe has $425.50 before he goes shopping. He spends 20% of it on groceries and then of the
    11·1 answer
  • Giving brainliest !! *easy*
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!