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Gnoma [55]
3 years ago
6

There\ were\ 750\ questions\ in\ a\ mathematics\ book.\ \ Sam\ answered\ 82\%\ of\ them\ correctly.\ \ how\ many\ questions\ did

\ he\ answer\ in\ correctly?\newline
Mathematics
1 answer:
aniked [119]3 years ago
6 0

Answer: 135

Step-by-step explanation:

Multiply 750 times .82 and then substract the result from 750

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Answer?I need it pleaseeee
Elan Coil [88]

Answer: 20 dallors

Step-by-step explanation:

8 0
2 years ago
What is the solution for x in the equation?
Soloha48 [4]
By just changing the x and numbers you can solve it:
-4x=-8 => x=2
7 0
2 years ago
What kind of triangle is this?
Sindrei [870]
Right angle
Te reason being is that it has a 90° corner.

Hoped this helped
3 0
3 years ago
Read 2 more answers
Solve x + 3y = 9<br> 3x – 3y = -13 (1 point)
zavuch27 [327]

Answer:

(-1, 10/3)

x = -1

y = 10/3

Step-by-step explanation:

To solve a system, one of the methods you can use is <u>elimination</u>. To use elimination, you need <u>a variable to have the same coefficient in BOTH equations</u>. Since both equations have "3y", with the same coefficient (3), we can use this method.

We want to eliminate a variable by cancelling it out. Since positive 3y PLUS negative 3y is 0, the variable in eliminated. ADD each of the terms in the equations together.

.        x + 3y = 9

<u>+    3x – 3y = -13</u>

.     4x – 0y = -4           3y - 3y = 0        

.             4x = -4            Divide both sides by 4 to isolate 'x'

.               x = -1              Solved for the x-coordinate

Since we know one variable, 'x', we can easily find the other, 'y'. Substitute 'x' with -1 in any of the equations. Then, isolate 'x'.

x + 3y = 9

(-1) + 3y = 9

-1 + 1 + 3y = 9 + 1      Add 1 to both sides to cancel out left side.

3y = 9 + 1          Add on the right side (9 + 1 = 10)

3y = 10              Divide both sides by 3 to isolate 'y'

y = 10/3             Solved for the y-coordinate

Put the 'x' and 'y' coordinates together in an ordered pair, which you write as (x, y).

The solution to the system is (-1, 10/3).

5 0
3 years ago
What is the surface area of the figure 8" 8" 12"
fgiga [73]
First, find the surface area of the bigger sides (there are 4 of them so what you get for one you will multiply by 4)

12 x 8 = 96

96 x 4 = 384

Then find the surface area of the smaller sides ( there are two small sides so multiply your answer by two)

8 x 8 = 64

64 x 2 =128

Then add both together 

128 +384 =  512

Hope this helps :)

3 0
3 years ago
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