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
gtnhenbr [62]
3 years ago
10

Mona wrote 7 tests, and her test average is 93. There will be one more test before the end of the year. What is the lowest grade

that Mona can get for her last test so that her test average is 90 or more?
Mathematics
1 answer:
olga55 [171]3 years ago
8 0
For this case, the first thing we are going to do is assume that all the tests are worth the same.
 Then, we define a variable:
 x: score of Mona's last test
 We write now the inequality that models the problem:
 \frac{93 + x}{2}  \geq  90
 From here, we clear the value of x: 93 + x  \geq  90*(2) 

93 + x  \geq  180

 x  \geq  180 - 93

 x  \geq  87
 Answer:
 
the lowest grade that Mona can get for her last test so that her test average is 90 or more is:
 
x = 87
You might be interested in
Jonathan purchased 4 shirts, 2 jackets, and 3 pants. How many different outfits using a
vagabundo [1.1K]

Answer:

24 way im pretty sure

Step-by-step explanation:

4 0
3 years ago
A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?
vitfil [10]
A direct variation has a constant slope, i.e. (y/x)= constant.

Both of the given two points give a slope of (y/x)=14/2=28/4=7, so the equation of the function is
y/x=7, or simply
y=7x
4 0
3 years ago
How can I simplify this expression using only positive exponents ?
belka [17]
\dfrac{4}{2}\cdot\dfrac{r^3}{r^5}=2\cdot\dfrac{1}{r^2}\\\\=\dfrac{2}{r^2}
5 0
2 years ago
What are the zeros of the quadratic function?
Xelga [282]
The zeroes are -3 and -4
3 0
3 years ago
Assume that BC is tangent to circle A. Find the value of x. Round your answer to the nearest tenth
Natalija [7]

Answer:

x ≈ 9.6

Step-by-step explanation:

Δ ABC is right with ∠ C = 90° ( angle between tangent and radius )

Using Pythagoras' identity in the right triangle

x² + 14² = 17²

x² + 196 = 289 ( subtract 196 from both sides )

x² = 93 ( take the square root of both sides )

x = \sqrt{93} ≈ 9.6 ( to the nearest tenth )

3 0
2 years ago
Other questions:
  • the length of a rectangle is 5 units longer than its width. If the perimeter must be at least 34 units, what are the possible le
    12·1 answer
  • Which statement about rational numbers is true?​
    13·2 answers
  • Shelly paid $64 for a skirt that was on sale at a 20% discount. What was the original selling price of the skirt? explain please
    11·1 answer
  • Help ! Easy 7th grade work ! I’ll give brainliest!
    6·1 answer
  • 3.321 divided by 0.07
    13·2 answers
  • The water level at Lake Penny changed −1 1/10 in. this year. Next year, it is predicted to change another −1 2/5 in.
    11·1 answer
  • X² + 4x – 32<br>x2 + x - 20​
    13·1 answer
  • Drag the operator to the correct location on the image. Which operation results in a trinomial?
    11·1 answer
  • Convert 0.33333...in to a fraction
    12·1 answer
  • What is the solution <br><br> options:<br> a. (-2,-2)<br> b. (-1,-5)<br> c. (-5,-1)<br> d. (2,-1)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!