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cluponka [151]
4 years ago
5

Maria's math test had 25 questions. She got 84% correct. How many problems did she get wrong?

Mathematics
1 answer:
Art [367]4 years ago
4 0
She got 4 problems incorrect
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What is the value of x ???
k0ka [10]

Answer:

D. 2\sqrt {133}

Step-by-step explanation:

{x}^{2}  =  {18}^{2}  + ( {12}^{2}  +  {8}^{2} ) \\  \\  {x}^{2}  = 324 + (144 + 64) \\  \\  {x}^{2}  = 324 + 204 \\  \\  {x}^{2}  = 528 \\  \\ x =  \sqrt{532}  \\  \\ x =  \sqrt{4\times 133}  \\  \\ x = 2\sqrt {133}

6 0
3 years ago
How many solutions does the system have?
Mrac [35]

Answer:

A Exactly one solution

Step-by-step explanation:

\left \{ {{6x-3y=9} \atop {6x+y=9}} \right.\\\\\left \{ {{6x-3y=9} \atop {-6x-y=-9}} \right\\\\Then, \\\\-4y=0\\\\\\ y=0\\\\

Putting y=0 at second equation, we have

-6x=-9\\\\x=\frac{9}{6} =\frac{3}{2}

The unique solution is (\frac{3}{2} , 0)

3 0
3 years ago
How l can write a brief summary about measurement for 3rd grade
I am Lyosha [343]
The topic "measurement" is very, very broad.
You'd be best off by limiting your scope to a couple of familiar situations:

Weighing a piece of chocolate

Having your height and weight measured by the school nurse

Counting the number of coins in your pocket

Getting a rough measure of how well you have learned new material by checking how many questions you got right out of the whole test.



7 0
4 years ago
I NEED THE ANSWER TO THIS QUESTION!!!!!! ITS A 6TH GRADE MATH!!! PLS!!!! THX!!!!! I WILL MARK THE BRAINLIEST!!!!!!!!’
adell [148]

Answer:

I think its $120

Step-by-step explanation:

there are 20 players each having 2 slices. Meaning that they'll need 40 pizzas. each box has 8 slices so theyll need 5 boxes for 40 pizzas. each box costs $24 so that will be $24 x 5 =$120

4 0
4 years ago
Which equation represents a direct variation?
Aloiza [94]

Answer:

y+0.5x

Step-by-step explanation:

y=Kx

y=Ax

(direct varation- a relation in wich the quotient of the dependant and independant   remain constant.)

8 0
4 years ago
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