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PtichkaEL [24]
3 years ago
12

Evaluate u + xy, for u = 2, x = 9, and y = 6.

Mathematics
2 answers:
yawa3891 [41]3 years ago
8 0
U+xy when u=2, x=9, and y=6

2+9(6)
2+54
56
puteri [66]3 years ago
6 0
Replace all variables with their equivalents.

The expression u + xy now becomes 2 + (9)(6).

Do the order of operations.

2 + (9)(6)
2 + 54
56

So, the answer is 56.
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The diameter of a dome is 28 inches. What is the volume? Leave in terms of pi.
MArishka [77]
To find the volume of a dome, you would have to find the volume of the sphere, theoretically, and then divide it by two. To calculate the volume, we would use the formula 4/3 \pi r^{3}. The radius (r) in this case is half of the diameter which is 14. 4 x 3.14 (pi) = 12.56. 12.56 x 14 x 14 x 14 (2744) = 34464.64. If we divide this number by 3, we get 11488.2133. If we divide this by 2 (to get the dome), we get 5744.10656. Which would be 5744.1 rounded to the nearest tenth.
4 0
3 years ago
A negative number divided by a positive number is:
Verdich [7]

Answer:

When you divide a negative number by a positive number then the quotient is negative.

Step-by-step explanation:

hope this helped

7 0
2 years ago
An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model the si
antiseptic1488 [7]
A = 30,000 - 2000m where A=altitude and m = number of minutes

After 5 minutes A ( altitude) = 30,000 - 2000(5) = 20,000 feet
6 0
2 years ago
Which number line correctly represents the irrational numbers listed below
dimaraw [331]

Answer:

D

Step-by-step explanation:

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4 0
3 years ago
Complete the square to factor X^2 +10X=-8
ella [17]

Answer: x=\sqrt{17}-5 and x = -\sqrt{17}-5

Step-by-step explanation:

Alright, lets get started.

The given equation is :

x^{2} +10x = -8

Adding 8 in both sides, it will become

x^{2} +10x + 8 = -8 +8

x^{2} +10x + 8 = 0

To make it perfect square, we need to add 25 and subtract 25

x^{2} +10x + 8 +25-25= 0

x^2+10x+25+8-25=0

(x+5)^2+8-25=0

(x+5)^2-17=0

Adding 17 in both sides  

(x+5)^2=17  

taking square root

x+5=\sqrt{17}

So,

x=\sqrt{17}-5 and x = -\sqrt{17}-5  .. Answer

Hope it will help :)

7 0
2 years ago
Read 2 more answers
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