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pav-90 [236]
3 years ago
8

POINTS i need answer to this question tyy

Mathematics
1 answer:
Nadya [2.5K]3 years ago
5 0
X= 3
Steps:
10•3+1= 31
12•3-5=31
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You and your best friend go out to lunch on the last day of school to celebrate
Komok [63]
69.75 x 0.05 = $3.49 discount

$69.75 - $3.49 = $66.26 discounted price with tax

66.26 x 0.18 = $11.93 tip

Discounted price with tax + tip
66.26 + 11.93 = 78.19
4 0
3 years ago
Read 2 more answers
Let Upper A equals left bracket Start 2 By 2 Matrix 1st Row 1st Column negative 2 2nd Column 4 2nd Row 1st Column 1 2nd Column 3
vagabundo [1.1K]

Answer:

not

Step-by-step explanation:

\left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] *\left[\begin{array}{ccc}-2&1\\3&7\end{array}\right]=

First is A and Second is B

Let's find A*B

\left[\begin{array}{ccc}-2(-2)+4*3&-2*1+4*7\\1(-2)+3*3&1*1+3*7\end{array}\right] =\left[\begin{array}{ccc}16&26\\7&22\end{array}\right]

b)

\left[\begin{array}{ccc}-2&1\\3&7\end{array}\right]  \left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] =

Now let's find B*A

\left[\begin{array}{ccc}-2(-2)+1*1&-2*4+1*3\\3(-2)+7*1&3*4+7*3\end{array}\right] =\left[\begin{array}{ccc}5&-5\\1&23\end{array}\right]

c) They are not

7 0
3 years ago
The city has a population of 3400,000 people. Suppose that each year the population grows by 8%. What will be the population aft
Mila [183]

Answer:

353,60000

Step-by-step explanation:

  1. 3400,000 x 8%=272,00000
  2. 272,000000 x 13 years
  3. 353,600000
4 0
3 years ago
Find the values of sand y <br> VR=y<br> TS=x+11<br> VT=y-3x <br> RS=x+2
Bumek [7]
I'm guessing this is a parallelogram or something, so VR=TS and RS=VT
therefore, y=x+11 and x+2=y-3x
y=x+11 , 2=y-4x
y=x+11 , y=4x+2
then use the process of elimination:
   y=4x+2         then plug in:    y=3+11
-  y=x+11                                 y=14
   0=3x-9                     I think this is how you'd do it, tbh it's just an educated
  3x=9 , x=3                               guess. Btw, sorry if it looks weird
6 0
3 years ago
Trucks in a delivery fleet travel a mean of 110 miles per day with a standard deviation of 38 miles per day. The mileage per day
Montano1993 [528]

Answer: 0.1824

Step-by-step explanation:

Given : The mileage per day is distributed normally with

Mean : \mu=110\text{ miles per day}

Standard deviation :  \sigma=38\text{ miles per day}

Let X be the random variable that represents the distance traveled by truck in one day .

Now, calculate the z-score :-

z=\dfrac{x-\mu}{\sigma}

For x= 132 miles per day.

z=\dfrac{132-110}{38}\approx0.58

For x= 159 miles per day.

z=\dfrac{159-110}{38}\approx1.29

Now by using standard normal distribution table, the  probability that a truck drives between 132 and 159 miles in a day will be :-

P(132

Hence, the probability that a truck drives between 132 and 159 miles in a day =0.1824

6 0
3 years ago
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