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pav-90 [236]
3 years ago
5

(2x1)+(2x4)=2x(?+?) what’s the ?

Mathematics
1 answer:
valina [46]3 years ago
4 0

Answer:

20

Step-by-step explanation:

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TRUE OR FALSE: <br> An isosceles trapezoid is a trapezoid with congruent legs.
dem82 [27]

Answer:

True

Step-by-step explanation:

If a quadrilateral (with one set of parallel sides) is an isosceles trapezoid, its legs are congruent.

4 0
3 years ago
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NASA launches a rocket at
Lapatulllka [165]

Answer:

the  height is :  2365.48  m

Step-by-step explanation:

hello :

h(t) = − 4.9 t 2 + 211 t + 94 .

the vertex of this parabola is : (-b/2a  , h(-b/2a) when : a= -4.9  and b=211

-b/2a = -(211)/2(-4.9) = 21.53

h(21.53) = -4.9(21.53)²+211(21.53)+94 = 2365.48  m

4 0
3 years ago
Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
weqwewe [10]

Answer:

19 people

Step-by-step explanation:

To find how many people went to the mall, count each x

At 0 trips, there are 2 xs, so<u> 2</u> people had 0 trips to the mall

At 1 trip, there are 0 xs, so <u>0</u> people had 1 trip to the mall

At 2 trips, there are 10 xs, so <u>10 </u>people had 2 trips to the mall

At 3 trips, there are 7 xs, so <u>7</u> people had 3 trips to the mall

Add up all the xs

2+0+10+7=19

19 people in all

8 0
3 years ago
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Refer to your math writing journal file named "Lines and Angles." What real-world examples did you describe for the three ways i
Sav [38]

Answer:

  1. Railway lines are example of parallel lines
  2. The floor and the walls of a room are example of perpendicular lines
  3. Two roads crossing at a signal can be termed as example of intersecting lines

Step-by-step explanation:

The lines can be related in following three ways

  1. Lines can be parallel
  2. Lines can be perpendicular
  3. Lines can be intersecting at an angle other than 90.

Now three real life examples of above three scenarios are described below:

  1. Railway lines are example of parallel lines
  2. The floor and the walls of a room are example of perpendicular lines
  3. Two roads crossing at a signal can be termed as example of intersecting lines
6 0
3 years ago
A vending machine operator has determined that the number of candy bars sold per week by a certain machine is a random variable
docker41 [41]

Answer:

The answer is below

Step-by-step explanation:

Let Y represent the profit per day, and x represent the number of bar sold per day. Hence:

Y = 0.25x - 2

a) The mean is given as:

\mu_y=E(Y)=E(0.25X-2) = 0.25E(X)-2\\\\But\ E(X)=mean\ of\ machine=125. Hence:\\\\E(Y)=0.25(125)-2=29.25\\\\E(Y)=\$29.25

b) The standard deviation of y is:

\sigma_y=var(0.25X-2)\\\\\sigma_y=0.25\sigma(X)\\\\but\ \sigma_X=7,hence:\\\\\sigma_y=0.25(7)=1.75\\\\\sigma_y=\$1.75

6 0
3 years ago
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