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
Aliun [14]
3 years ago
15

1. Annette scored 85. 73. and 94 on her first three quizzes. How high does she need to

Mathematics
2 answers:
AfilCa [17]3 years ago
8 0
64. 80x4=320. 80 is a b average. 320-252=68. 252 is the total of her current grades.
kotegsom [21]3 years ago
7 0

Answer:

at least a score of 68

Step-by-step explanation:

(85+73+94+q)/4 ≥ 80

(252 + q)/4 ≥ 80

multiply each side by 4 to get:

252 + q ≥ 320

q ≥ 68

You might be interested in
Pls help ASAP!! Pleaseee now!!
kap26 [50]
4/5 x 7= 28/5= 5 3/5
6 0
3 years ago
Ben and irie made a secret code. they wrote some numbers of the code so they could remember the pattern. what should the next nu
stiks02 [169]
Well what was the pattern they had 

4 0
3 years ago
Work out area of a triangle base 9cm height 4cm
insens350 [35]
Area = 1/2 x base x height

Area = 1/2 x 9 x 4

Area = 9 x 2

Area = 18 cm^2
6 0
3 years ago
Read 2 more answers
The distribution of the test statistic for analysis of variance is the F-distribution. true or false
lubasha [3.4K]

Answer:

True. See explanation below

Step-by-step explanation:

Previous concepts

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".  

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"  

If we assume that we have k groups and on each group from j=1,\dots,k we have k individuals on each group we can define the following formulas of variation:  

SS_{total}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x)^2  

SS_{between=Treatment}=SS_{model}=\sum_{j=1}^p n_j (\bar x_{j}-\bar x)^2  

SS_{within}=SS_{error}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x_j)^2  

And we have this property  

SST=SS_{between}+SS_{within}  

The degrees of freedom for the numerator on this case is given by df_{num}=k-1 where k represent the number of groups.  

The degrees of freedom for the denominator on this case is given by df_{den}=df_{between}=N-k.  

And the total degrees of freedom would be df=N-1

And the we can find the F statistic F=\frac{MSR}{MSE}

8 0
3 years ago
True or false every real number is a complex number?
HACTEHA [7]

Answer:

true

\huge\underline\pink{Hope\:that\:helps}

mark the person below as brainliest !!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Find the lcm of 6, 5, 3
    13·2 answers
  • Mrs.Dimas has $130 to buy basketballs for Edison Middle School. How many can she buy at $15 each? Interpret the remainder
    14·2 answers
  • 1. Which event will have the greatest impact (positive or negative) on one's net worth after one month?
    15·1 answer
  • A number cube is labeled 1-6 is rolled 200 times. Numbers 1-4 are rolled 137 times and numbers 5 and 6 are rolled the rest of th
    5·1 answer
  • If the vertices of an ellipse are at (1, 5) and (1, -5) and (3, 0) is a point on the ellipse, what is the ellipse equation?
    15·2 answers
  • Please help.<br> Is algebra.
    5·1 answer
  • 18) What value of x makes R(x) = 10
    10·1 answer
  • How many times can a 20 go into 100
    15·2 answers
  • Is a function f(x)= 1/x odd or even?<br>​
    9·2 answers
  • What are the solution(s) for the quadratic equation?<br><br> Y=5x^2-9x+4<br><br> Show work
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!