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
NISA [10]
4 years ago
15

Math please help 10 points!

Mathematics
1 answer:
gizmo_the_mogwai [7]4 years ago
8 0

Answer:


Step-by-step explanation:

average= \frac{sum of scores}{number of tests}

80= \frac{79+81+77+x}{4}

80 x 4 = 79+81+77+x

320=237  + x

320-237 = x

83=x

so Marianne must score 83 points or higher on her last test

You might be interested in
Jake took a handful of M&Ms from the candy dish on the coffee table.
iren2701 [21]

Answer:

36

I want brainliest

Step-by-step explanation:

<em><u>6 x 3/1 or 6 x 3 </u></em>= 18

put the reds back in

<u><em>18 x 2 </em></u><em>=</em> 36

take the ones from his sister

4 0
3 years ago
Read 2 more answers
Julisa wants to find the perimeter of her bedroom that is similar to her brothers . If her brothers bedroom is 12ft long and 10f
IrinaK [193]

Answer:

The perimeter of her bedroom is 36.67 ft.

Step-by-step explanation:

Julisa's bedroom is similar to her brother's bedroom.

If the width of her bedroom is w and the length is l and her brother's room has width W and length L, then

\frac{w}{W} = \frac{l}{L} ............. (1)

Now, the dimensions of her brother's bedroom are given by 12 ft long by 10 ft wide and her bedroom has length 10 ft.

Then, from equation (1) we get,

\frac{w}{10} = \frac{10}{12}

⇒ w = 8.33 ft.

Therefore, the perimeter of her bedroom is 2(8.33 + 10) = 36.67 ft. (Approximate) (Answer)

7 0
4 years ago
Pls help f(x)=2(x+1)^2+3
lidiya [134]

Answer:

y= 2x² + 2x +3

Step-by-step explanation:

y=f(x)

y=2( x^2 + 1^2 +2(x)(1) ) + 3

y=2x^2 + 1 + 2x +3

y= 2x^2 + 2x +3

8 0
3 years ago
Read 2 more answers
What is the approximate perimeter of the figure?
ira [324]

Answer:

You have to show me the figure first.  I can't figure the figure out unless I see the figure!

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find a rational number between 3/5 and 4/5 ( see I just only want one so please don't give me all five)
goldenfox [79]

Answer:

\dfrac{7}{10}

Step-by-step explanation:

We need to find a rational number between 3/5 and 4/5.

We can find a rational number between two fractions as :

\dfrac{a+b}{2}

We have, a = 3/5 and b = 4/5

So,

\dfrac{\dfrac{3}{5}+\dfrac{4}{5}}{2}\\\\=\dfrac{\dfrac{7}{5}}{2}\\\\=\dfrac{7}{10}

So, a rational number between 3/5 and 4/5 is equal to 7/10.

4 0
3 years ago
Other questions:
  • What’s greater 1 or -16
    12·2 answers
  • Which statement describes a process to solve b+20 - b=5
    15·2 answers
  • John bought 3 pencils for $0.75 each and a notebook for $4.25. If the tax rate is 5%, what is the total amount of John's purchas
    5·1 answer
  • Soda Tak claims that Diet Tak has 40mg of sodium per can. You work for a consumer organization that tests such claims. You take
    6·1 answer
  • Factor 15x3 – 5x2 + 6x – 2 by grouping
    15·1 answer
  • The vertex of this parabola is at (-5, -2). When the x-value is -4, the
    14·1 answer
  • What is the factored form of 2x^2+2x-4
    7·1 answer
  • Pls help
    11·1 answer
  • PLS HELPPPP<br> will mark brainliest:))
    8·1 answer
  • Please help me!<br><br> I will give brainliest if you explain how you got the answer
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!