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slava [35]
3 years ago
6

Find the value of x.

Mathematics
1 answer:
gayaneshka [121]3 years ago
7 0

Answer:

146 + ( - 39 + x) = 180 \\ 146 - 39 + x = 180 \\ 107 + x = 180 \\ x = 180 - 107 \\ x = 73

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It would take an hour for plane A to meet plane B. If the distance between them will be 200 miles in 45 minutes, how far are the
masha68 [24]

Answer:  125 miles

if you do the math you will get the same answer.

8 0
3 years ago
In any​ year, the weather can inflict storm damage to a home. From year to​ year, the damage is random. Let Y denote the dollar
krok68 [10]

Answer:

a. mean = 1000

standard deviation = 4358.9

b. expected value of average damage bar Y = 1000

probability bar y exceeds 2000 = 0.011

Step-by-step explanation:

we have p1 = 95%, y1 = 0, p2 = 5%, y2 = 20000

Mean = (0.95 * 0) + (0.05 * 20000)

= 1000

var(y) = E(y²) - E(Y)²

= we solve for E(y)²

= 0²*0.95 + 20000²*0.05

= 0 + 20000000

then the variance of y = 20000000 - 1000²

=20000000-1000000

= $19000000

standard  deviation is the square root of variance

= √19000000

= 4358.9

2.

a. Expected value of average is also the mean = 1000

b. we are to find probability that barY exceeds 2000

z=\frac{2000-1000}{\sqrt{19000000/100} }

= 1000/435.889

= 2.29

1-p(z≤2.29)

= 1 - 0.989

= 0.011

so the probability that barY exceeds 2000 is 0.011

8 0
3 years ago
Help me pls I’ve been posting this question all day
Rama09 [41]

Answer:

19.5 sq. inches

Step-by-step explanation:

This one is fairly simple. The area of a rhombus is the same as that of a parallelogram, which is side * height. In this case, we have 6.5 (side) *3 (height) = 19.5 sq. inches. Hope this helps!

6 0
3 years ago
In the image, point A is the center of the circle. Which two line segments must be equal in length?
alex41 [277]
The answer is C (EF and HI)

This is because both lines pass through the centre A, meaning both are diameters. Hence, they are equal in length.
6 0
3 years ago
What is the sum of X2-3x+7 and 3x2+5X-9
Pie
x^2-3x+7+3x^2+5x-9=\ \ \ \  | combine\ like\ terms\\\\
4x^2+2x-2\\\\
Solution\ is\ 4x^2+2x-2.
6 0
3 years ago
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