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
Irina18 [472]
3 years ago
11

A student has gotten the following grades on his tests: 87, 95, 86, and 88. He needs to have an average of 90 to receive an A fo

r the class. What is the minimum grade he must get on the last test in order to have an average of 90?
(Measures of Central Tendency and Dispersion)
Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
8 0
The student needs an average of 90 and he has the following grades :
87,95,86,88
in order to get a 90 average he has to get
 90x5=450
87+95+86+88+?=450,  356+?=450 , 450-356=94
the answer is 94
You might be interested in
If 2/x+ 3/y =13 and 5/x- 4/y = -2, then x+y equals
creativ13 [48]

Answer:

x + y =  \frac{5}{6}

Step-by-step explanation:

Let:

u =  \frac{1}{x}  \\ v =  \frac{1}{y}

This allows us to manipulate the equations like we normally would.

2u + 3v = 13 \\ 5u - 4v =  - 2 \\  \\   + 8u + 12v = 52 \\  + 15u - 12v =  - 6 \\ 23u = 46 \\ u = 2 \\  \\ 2(2) + 3v = 13 \\ 4 + 3v = 13 \\ 3v = 9 \\ v = 3

Then, we return the values where they belong.

u =  \frac{1}{x}  \\ 2 =  \frac{1}{x}  \\ x =  \frac{1}{2}  \\  \\ v =  \frac{1}{y}  \\ 3 =  \frac{1}{y}  \\ y =  \frac{1}{3}

Finally, we add:

\frac{1}{2}  +  \frac{1}{3}  =  \frac{3}{6}  +  \frac{2}{6}  =  \frac{5}{6}

7 0
3 years ago
Please help me give me right answer pleaseeeeeeeeeeee
Harlamova29_29 [7]

Answer:

7 x 2, 14, the area, then use pie, 3.14 to get the circle

Step-by-step explanation:

3 0
2 years ago
An organization will give a prize to a local artist. The artist will be randomly chosen from among 10 painters, 3 sculptors, and
Fofino [41]

The probability is 8/18 or 44%.


Since there are 3 sculptors and 5 photographers, and the question is asking for either a sculptor or photographer, you add them together. There are a total of 18 artists, and the probability is the chance of a certain thing happening over the total amount of things that can happen (i.e. a coin landing on heads is 50%).

The answer would be 8/18.

7 0
3 years ago
Read 2 more answers
How many pounds does 6.5 dozen cupcakes weigh?<br> • 1 cupcake = 35.3 grams
melisa1 [442]

Answer:

35.3g * 78 =2,753.4g

2,753.4g = 6.07lbs

6 0
3 years ago
5-3x=2<br> What is x equals to?<br> Explain too please.
viktelen [127]
Answer:

x=1

Explanation:

-3x+5=2 subtract 5 on both sides to get -3x=-3 divide -3 from -3 to get 1

6 0
3 years ago
Other questions:
  • how would you rewrite this expression with parentheses to equal the given value: 5+3×2-6. you have to make it equal 10.
    8·2 answers
  • Round 833.785 to the nearest hundredth
    11·2 answers
  • Name the place of the hylighted digits,then write the value of the digits 35.052
    10·1 answer
  • Assume a color display using 8 bits for each of the primary colors (red, green, blue) per pixel and a frame size of 1280 × 1024.
    6·1 answer
  • Jodi owns 112 shares of stock selling for $16.20. How many more shares can she purchase after receiving a dividend of $0.80 per
    8·1 answer
  • The ratio of cats to dogs at April's Animal Shelter was 3 to 2. How many dogs were in the shleter if there were a total of 75 ca
    15·1 answer
  • A template strand of DNA is 3' AACTGAACTTT } 5'
    10·2 answers
  • Inveres laplace transform (3s-14)/s^2-4s+8​
    14·1 answer
  • HELP ME PLSSS i will give u 15 points and mark u as brainest
    14·2 answers
  • ) Una compañía invierte $15,000 al 8% y $22,000 al 9%. ¿A qué tasa debe invertir
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!