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Aleonysh [2.5K]
3 years ago
9

Mathematics sat question

Mathematics
2 answers:
Tanzania [10]3 years ago
6 0

Answer:

A) a^2 + a

Step-by-step explanation:

So the problem says "sum" which means you have to add the expressions

(a^2) - 1 and a+1

Work:

((a^2) - 1) + (a + 1)

We can simplify only the constants

(a^2) + a + 1 - 1

(a^2) + a

so the answer is A

navik [9.2K]3 years ago
5 0

Answer: A) a^{2} + a

add the two equations together to get A.

the ones cancel eachother out and you cant add a^{2} to a

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Please help me and show how you worked out.
sdas [7]

Answer: The sequence rule is division. 80 divided by 2 = 40 divided by 2 = 20 divided by 2 = 10 and 10 / 2 equals 5.

Step-by-step explanation:

The sequence is divided by 2 because when you divided 80 by 2, it equals the second pattern in the sequence, 40.

I worked it out by dividing every number by 2 and getting the same numbers in the pattern, I checked by doing the opposite, 40 x 2 = 80.

Hope this helps!

5 0
3 years ago
2/3&lt; x/8 &lt;7/8 what number could replace x to make a true statement<br><br> 3<br> 4<br> 5<br> 6
ICE Princess25 [194]

Answer:

6

Step-by-step explanation:

Multiply all three sides by 8 to get x by itself

16/3 < x < 7

5 1/3 < x < 7

so it’s between 5 and 1/3 and 7. the only answer between those two would be 6. 3 and 4 is too less. 5 is also too less.

5 0
3 years ago
Read 2 more answers
Can somebody please help me?
9966 [12]

28+28+28= 84

28 x 28 x 28 = 21952

hope it helps!:)

4 0
3 years ago
The difference between two numbers is 14. if 1/3 of the larger number is subtracted from the smaller number ,the result equals 1
otez555 [7]

Answer:

Step-by-step explanation:

x-y=14

x-1/3y=1/10

-y=14-x

y=-14+x

take out the factors

x-10/30y=3/30

30x-10y=3

substitute

30x-10(-14+x)=3

30x+140-10x=3-140

20x/20=-137/20

x=-6.85

y=-14+(-6.85)

y=-20.85

7 0
3 years ago
True or false: Polar equations can describe graphs as functions, even when their equations in the rectangular coordinate system
pshichka [43]
The statement above is true. Polar equations indeed can describe graphs as functions, even if when the equations in the rectangular coordinate system are not one of the functions. Polar equations can be graphed accurately using hands by using the Polar Coordinate System.
6 0
3 years ago
Read 2 more answers
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