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serious [3.7K]
2 years ago
6

Can you help me with this plz

Mathematics
2 answers:
kaheart [24]2 years ago
7 0
Answer:

72 and 18

Step-by-step explanation:
prohojiy [21]2 years ago
6 0

Answer:

72 and 18

Step-by-step explanation:

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When using the binomial formula, which of the following is a correct step in the expansion of (x+y)^4 ?
avanturin [10]
Here is the expansion of <span>(x + y)n </span><span>for </span><span>n = 0, 1,…, 5</span><span> :</span>

<span>(x + y)0 = 1</span> 
<span>(x + y)1 = x + y </span>
<span>(x + y)2 = x 2 +2xy + y 2 </span>
<span>(x + y)3 = x 3 +3x 2 y + 3xy 2 + y 3 </span>
<span>(x + y)4 = x 4 +4x 3 y + 6x 2 y 2 +4xy 3 + y 4 </span>
<span>(x + y)5 = x 5 +5x 4 y + 10x 3 y 2 +10x 2 y 3 +5xy 4 + y 5 
</span>
hopefuly this helps you understand


7 0
3 years ago
Jackie scored 81 and 87 on her first two quizzes . Write and solve a compound inequality to find the possible values for a third
asambeis [7]

Answer:

The third score must be larger than or equal to 72, and smaller than or equal 87

Step-by-step explanation:

Let's name "x" the third quiz score for which we need to find the values to get the desired average.

Recalling that average grade for three quizzes is the addition of the values on each, divided by the number of quizzes (3), we have the following expression for the average:

average=\frac{81+87+x}{3}

SInce we want this average to be in between 80 and 85, we write the following double inequality using the symbols that include equal sign since we are requested the average to be between 80 and 85 inclusive:

80\leq average\leq 85\\80\leq \frac{81+87+x}{3} \leq 85\\80\leq \frac{168+x}{3} \leq 85

Now we can proceed to solve for the unknown "x" treating each inaquality at a time:

80\leq \frac{168+x}{3}\\3*80\leq 168+x\\240\leq 168+x\\240-168\leq x\\72\leq x

This inequality tells us that the score in the third quiz must be larger than or equal to 72.

Now we study the second inequality to find the other restriction on "x":

\frac{168+x}{3} \leq 85\\168+x\leq 85 *3\\168+x\leq 255\\x\leq 255-168\\x\leq 87

This ine72\leq x} \leq 87quality tells us that the score in the third test must be smaller than or equal to 87 to reach the goal.

Therefore to obtained the requested condition for the average, the third score must be larger than or equal to 72, and smaller than or equal 87:

4 0
3 years ago
11. Describe and correct the error in evaluating the expression.<br> -2(-7)= -14
Ulleksa [173]

Answer:

Step-by-step explanation:

The left side  

14

does not equal to the right side  

−

14

, which means that the given statement is false.

False

7 0
3 years ago
I’ll Mark u as brainless if you solve this
Contact [7]

i think the person below me is correct and the answer is 12

4 0
3 years ago
Read 2 more answers
A school is selling tickets for the prom. Tickets with a picture package cost $50 and tickets without the packet cost $30. If th
krek1111 [17]

Answer:

Answer

1.0/5

0

1 answer

2780/20 = 139 picture tickets

175-139 =36other tickets

43 - 18*2 = 43 -36 = 7

7 were 3 point shots

11 were 2 point shots

Step-by-step explanation:

8 0
3 years ago
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