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
AVprozaik [17]
3 years ago
15

Lisa's test grades are 79, 89, and 90. there will be one more test this year. if lisa wants her test average to be at least 88,

what is the lowest grade she can get on her last test?
Mathematics
1 answer:
erik [133]3 years ago
5 0
For this case, what we are going to do first is to assume that all the exams are worth the same percentage of the final grade.
 We have then that Lisa's average grade point equation is:
 88 =  \frac{79 + 89 + 90 + x}{4}
 Where,
 x: minimum note that lisa must obtain in the last exam.
 Clearing x we have:
 x = (88 * 4) - (79 + 89 + 90)

x = 94
 Answer:
 
the lowest grade she can get on her last test is:
 
x = 94
You might be interested in
Drag each measure to a box on the right to match the measure on the left. 5 feet10,560 feet48 inches126 inches 2 miles 123 yards
charle [14.2K]

Answer:

4 feets = 48 inches

2 miles = 10,560 feets

1 2/3 yards = 5 feets

3 1/2 yards = 126 inches

Step-by-step explanation:

Recall :

1 Feet = 12 inches

1 MILE = 5280 feets

1 yard = 36 inches

1 yard = 3 feets

If 1 feet = 12 inches

4 feets will be ; (12 * 4) inches = 48 inches

If 1 mile = 5280 feets

2 miles will be ; (5280 * 2) = 10,560 feets

If 1 yard = 3 feets

1 2/3 yards will be ; (5 /3) * 3 = 5 feets

If 1 yard = 36 inches

3 1/2 yards will be ; (7 /2 ) * 36 = 126 inches

8 0
3 years ago
Let x=number of cds and y=number of dvds
Elis [28]
X + y = 40.....multiply by -4
4x + 6y = 180
-------------------
-4x - 4y = -160 (result of multiplying by -4)
4x + 6y = 180
------------------add
2y = 20
y = 20/2
y = 10 <===

x = 30

6 0
3 years ago
-2.25-(-3.9) show your work I WILL DO BRAIN LIST 15 POINTS
Elden [556K]

Answer:

The answer is 1.65

Step-by-step explanation:

−2.25−(−3.9)

=−2.25−(−3.9)

=−2.25+3.9

=1.65

7 0
3 years ago
» What is Mary's running speed in<br> miles per hour?<br> 10/2 = ?
defon
The answer is 5 because 10 divided by 2 is 5
7 0
2 years ago
The sum of the area of 2 circles is 80pi square meters. Find the length of a radius of each circle if one of them is twice as lo
IgorC [24]
80p=pr^2+p(2r)^2
80p=pr^2+4pr^2
80=r^2+4r^2
80=5r^2
16=r^2
r=4 for the smaller circle´s radius, and 8 is the larger circle´s radius.

Have a nice day, I hope this was helpful :D
8 0
3 years ago
Read 2 more answers
Other questions:
  • IS THIS RIGHT??? PLEASE HELP ASAP
    12·2 answers
  • Help me with these please all 13 angles, I will answer anything you have.
    15·1 answer
  • Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula?
    13·2 answers
  • find the distance between P1 (3,-195degrees) and P2 (-4, -94 degrees) on the polar plane. Round your answer to the nearest thous
    5·1 answer
  • Data are collected about the amount of time, in minutes, each member of the lacrosse team spends practicing. How does a single o
    10·1 answer
  • If 24 extra large cans of soup will serve 96 people, how many cans should Ann buy to serve 28 people?
    12·1 answer
  • If the legs of an isosceles right triangle are 6 units long find the length of the hypotenuse
    9·1 answer
  • A major department store has determined that its customers charge an average of $500 per month, with a standard deviation of $80
    5·1 answer
  • A circular pizza with a diameter of 8 inches. The pizza is in a square box with side lengths of 8 inches. In square inches, how
    8·1 answer
  • At the Sunnyvale Playhouse, the price for an adult ticket is $12 and the price of a child's ticket is $6. For Saturday night's p
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!