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
mestny [16]
3 years ago
12

Alina has just received 333 video games for her birthday to add to her existing 121212 video games. A week later she went to the

thrift store and doubled her video games. Another week later she bought 555 more games.
Write a numerical expression with parentheses for the total number of video games Alina has now.
Do not simplify your expression.
Mathematics
1 answer:
Katarina [22]3 years ago
7 0
[(121212+333)(2)]+555
You might be interested in
Can someone help me in the problem above
MrMuchimi

Answer:

The answer is D

Step-by-step explanation:

When solving you get 23/5 this is 4.6 It says that X must be less than or equal to this

6 0
3 years ago
The difference between the number of customers in line at the express checkout and the number in line at the superexpress checko
icang [17]
The table is:0 1 2 3 

x1 0 0.08 0.06 0.04 0.00 

1 0.05 0.18 0.05 0.03 

2 0.05 0.04 0.10 0.06 

3 0.00 0.03 0.04 0.07 

4 0.00 0.01 0.05 0.06 


Expected difference =
+(0.08*(0-0)) +(0.06*(0-1)) +(0.04*(0-2)) +(0.00*(0-3)) +(0.05*(1-0)) +(0.18*(1-1)) +(0.05*(1-2)) +(0.03*(1-3)) +(0.05*(2-0)) +(0.04*(2-1)) +(0.10*(2-2)) +(0.06*(2-3)) +(0.00*(3-0)) +(0.03*(3-1)) +(0.04*(3-2)) +(0.07*(3-3)) +(0.00*(4-0)) +(0.01*(4-1)) +(0.05*(4-2)) +(0.06*(4-3))
= 0.17
6 0
3 years ago
A laboratory technician needs to make a 63-liter batch of a 20% acid solution How can the laboratory technician combine a batch
Gre4nikov [31]
Let x be the volume (liters) of pure (at 100%) acid needed
Let y be the volume (liters) of the other acid (at 10%) needed 
The final solution will be:
a) x+ y = 63 liters, AND their respective concentration in acid: is
100% x & 10% :y that will generate 63 liters at 20%
b) x +0.1 y = 63x 0.2 = 12.6

Let's solve this system of 2 equations:

x + y =63
x + 0.1 y = 12.6

Solving it will give you:

x= 7 liters at 100%
y = 56 liters at 10%
6 0
3 years ago
Read 2 more answers
For what value of k is there one solution to the given quadratic equation (k+1)x²+4kx+2=0.
andriy [413]

Answer:

If k = 1 or k = -\frac{1}{2}, there is only one solution to the given quadratic equation.

Step-by-step explanation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = (x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

The signal of \bigtriangleup determines how many real roots an equation has:

\bigtriangleup > 0: Two real and different solutions

\bigtriangleup = 0: One real solution

\bigtriangleup < 0: No real solutions

In this problem, we have the following second order polynomial:

(k+1)x^{2} + 4kx + 2 = 0.

This means that a = k+1; b = 4k; c = 2

It has one solution if

\bigtriangleup = 0

b^{2} - 4ac = 0

16k^{2} -8(k+1) = 0

16k^{2} - 8k - 8 = 0

We can simplify by 8

2k^{2} - k - 1 = 0

The solution is:

k = 1 or k = -\frac{1}{2}

So, if k = 1 or k = -\frac{1}{2}, there is only one solution to the given quadratic equation.

4 0
3 years ago
Its my birthday today= Free points!
xz_007 [3.2K]

Answer:

happy birthday

Step-by-step explanation:

thank you

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which number belongs in the integers area on the Venn diagram?
    9·1 answer
  • Can someone do this quickly please?
    15·2 answers
  • A company sell earbuds for $17 each. At the end of the week,they have sold $731 worth of earbuds.how many earbuds did they sell?
    10·1 answer
  • What is the mean in 74,75,80,76,75,81,78?
    14·2 answers
  • What is 35/75 reduced to
    14·2 answers
  • Megan's family paid $45.00 for 5 tickets to the country fair. Each ticket costs the same amount. What was the cost per ticket?
    7·1 answer
  • Negative financial information (excluding bankruptcy) can stay on your credit report for:
    6·1 answer
  • Assume that y varies inversely<br> with x. If y= 16 when x = 0.5,<br> find y when x = 32.<br> y=[? ]
    14·1 answer
  • A book costs $13 correct to the nearest
    12·1 answer
  • The solution of the equation 5 − 2 + 2 = 8 is __
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!