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
KATRIN_1 [288]
3 years ago
12

You get scores of 72 and 88 on 2 science tests. You have to have an average of at least 85 to not be grounded by your parents. W

hat score do you need to make on your next test to not be grounded?
Mathematics
2 answers:
Tpy6a [65]3 years ago
8 0
Answer: 95
1. Add both test scores (72 & 88) together. You get 160
2. Then you divide 160 by 2. You get an average of 80.
3. When you add 72, 88, and 95 together you get 255.
4. You then divide 255 by 3
5. You get an average of 85
svetoff [14.1K]3 years ago
7 0

Answer:

95

Step-by-step explanation:

72+88+95=255:3= 85

You might be interested in
Given the following mAB = mBC= mCD in circle F what is the measure of angle AFB
Svetach [21]
50° <span>is the measure of angle AFB</span>

8 0
3 years ago
The teacher paid $12 for 6 pounds of candy. Which statement is true about her unit<br> rate?
Hunter-Best [27]

Answer:

For every pound of candy, the teacher spent $2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The breaking strengths of cables produced by a certain manufacturer have a mean, u, of 1750 pounds, and a standard deviation of
AlladinOne [14]

Answer:

We accept the null hypothesis that the  breaking strength mean is less and equal to 1750 pounds and has not increased.

Step-by-step explanation:

The null and alternative hypotheses are stated as

H0:  u ≥ 1750   i.e the mean is less and equal to 1750

against the claim

Ha: u > 1750  ( one tailed test)  the mean is greater than 1750

Sample mean = x`= 1754

Population mean = u = 1750

Population deviation= σ = 65 pounds

Sample size= n = 100

Applying the Z test

z= x`- u / σ/ √n

z= 1754- 1750 / 65/ √100

z= 4/6.5

z= 0.6154

The significance level alpha = 0.1

The z - value at 0.1 for one tailed test is ± 1.28

The critical value is z > z∝.

so

0.6154 is < 1.28

We accept the null hypothesis that the  breaking strength mean is less and equal to 1750 pounds and has not increased.

8 0
3 years ago
2.
jeka94
She’ll need 18 eggs.

2 eggs = 12 (dozen) muffins

108 muffins (needed) / 12 muffins

= 9 groups of 12 muffins

so therefore 2eggs x 9 groups of muffins = 18 eggs
4 0
3 years ago
Read 2 more answers
Which statements about the graph of the function f(x) = –x2 – 4x + 2 are true? Check all that apply. The domain is {x|x ≤ –2}. T
Leto [7]
The graph of the function f(x) =-x^2-4x + 2 is parabola with branches going down in the negative direction of y-axis. 
The vertex of parabola has coordinates:

x_v=\dfrac{-(-4)}{2\cdot(-1)}=-2, \\ y_v=-(-2)^2-4\cdot (-2)+2=-4+8+2=6

Then you can conclude that all x are possible, that means that the dimain is x\in (-\infty,\infty) and the maximum value of y is at the vertex, then the range is (-\infty,6].The function is increasing for x<-2 and decreasing for x>-2 (since vertex is the maximum point).
When x=0, y=2. 
Hence,
<span>The domain is {x|x ≤ –2} - false.
</span>
<span>The range is {y|y ≤ 6} - true.
</span>
<span>The function is increasing over the interval (–∞ , –2) - true.
</span>
<span>The function is decreasing over the interval (−4, ∞) - false.
</span>
<span>The function has a positive y-intercept - true.</span>









8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the missing angle measure in ΔQRS.
    7·1 answer
  • PLZ HLP MEEEEEEEEEEEEEEEEEEEEE A median of a triangle is a line or segment that passes through a vertex and bisects the _______
    10·1 answer
  • PLEASE HELP ME!!!! Which steps are included in using integer tiles to evaluate -8÷2? Check all that apply. A. Start with 8 negat
    10·2 answers
  • Let f be a functions of degree 4 whose coefficients are real numbers: two of its zeros are - 3 and 4 - i. Explain why one of the
    14·1 answer
  • In the diagram above, zero represents the location of Martin Luther King Middle School. The point represents the library, which
    5·1 answer
  • Please explain. This is for me and a friend too. NO LINKS OR I WILL REPORT YOU!!
    9·2 answers
  • Volume=<br> A) 91 2/3 pie cubic units <br> B) 275 pie cubic units <br> C) 36 2/3 pie cubic units
    9·1 answer
  • Can somebody help me on question 15?!
    8·2 answers
  • HEELLLPPP ILL GIVE BRAINLIEST
    10·1 answer
  • A certain sum of money doubles itself in 10 years in how many years will it triple itself​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!