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bekas [8.4K]
2 years ago
6

Ali simplifies the expression 9y+y to 9y2. why is she wrong?

Mathematics
2 answers:
Scorpion4ik [409]2 years ago
7 0
<span>9y+y = y(9 + 1) = 10y
answer is 10y

if </span><span>9y^2 then it should be 9y times y = 9y^2

hope it helps</span>
LiRa [457]2 years ago
3 0

Answer:

the answer is 10y

Step-by-step explanation:

they reason why she is wrong  is because in this answer, there would be no power involved. hope this works. have a great day!

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Is 52L greater than 5,200mL?
Vesnalui [34]
<span>5200mL </span>→ 520 cL → 52dL →<span> 5.2L

</span><span>Example:

If

1L ------ 1000mL
x -------- 5200mL

1000x = 5200
</span>x = \frac{5200}{1000}
<span>x = 5,2
</span>
Therefore:
<span>52L > 5200mL or 5.2L (True)


</span>
5 0
2 years ago
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Metro buses are scheduled to arrive at each stop every 30 minutes. If the time a person waits at a bus stop is uniformly distrib
Nutka1998 [239]

Answer:

The probability is P(X > 25 )  =  1.667

Step-by-step explanation:

From the question we are told that

    The  maximum wait is  b  = 30 \ minutes

      The  minimum wait would be  a =  0\  minutes

Generally the probability that you will wait more than 25 minutes for a bus is mathematically represented as

   P(X > 25 )

Now given that the time a person waits is uniformly distributed and that the maximum is  30 then we can evaluate the above probability as

    P(X > 25 ) =  P(25 <  X  <  30 ) =  \frac{30 - 25}{30 -  0}

     P(X > 25 )  =  1.667

4 0
1 year ago
Brandon is shopping at Old Navy during a sale. All shorts are $16 each and all T-shirts are $10 each. He has $100 to spend and w
Tatiana [17]

Answer:32

Step-by-step explanation:

8 0
2 years ago
Let L be the line with parametric equations x=2+t, y=1-t, z=1+3t.Let v=(1,2,0).Find vectors w1 and w2 such that v= w1 + w2, and
charle [14.2K]

Answer:

w1 = (-1/11, 1/11, -3/11)

w2 = (12/11, 21/11, 3/11)

Step-by-step explanation:

Direction ratio of w1 = Direction ratio of L (because parallel) = K+(1, -1, 3)

Let <a,b,c> be direction ratio of w2.

Then, <a,b,c>. <1,-1,3> = 0

a-b+3c = 0

v = w1 + w2

(1, 2, 0) = k(1, -1, 3) + (a, b, c)

a + k = 1

b - K = 2

c - 3k = 0

Solving 4 equations, a = 12/11, b= 21/11, c = 3/11, k=-1/11

So, w1 = -1/11(1, -1 ,3) = (-1/11, 1/11, -3/11)

w2 = (12/11, 21/11, 3/11)

6 0
1 year ago
Find the percentage change between two numbers if the original number was 150 and now is 330.
bearhunter [10]

Answer:

0.45

Step-by-step explanation:

8 0
2 years ago
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