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oksian1 [2.3K]
3 years ago
12

Apply the multiplication property of equality to write an equation equivalent to 7n=28

Mathematics
1 answer:
AleksAgata [21]3 years ago
3 0
Well you solve for N so 7n =28 you do 28 divided by 7 and you get N equals 4
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From the set {20, 38, 47}, use substitution to determine which value of x makes the inequality true.
vredina [299]
One way is to solve (it's easier)

x-9>29
add 9
x+9-9>29+9
x+0>38
x>38
just pick the numbers bigger than 38 as answer


47 is only number (38>38 is false)



answer is A

7 0
4 years ago
Sales of SUVs​ (sport utility​ vehicles) in the United States ​(in millions) for the years​ 1990-1999 can be modeled by the quad
Andrei [34K]
If x = 0 is 1990, x = 1 is 1991, then 1998 is represented by x = 8. Substitute this value of x into the quadratic equation to find y:
y = 0.016*(8^2) + 0.124*8 + 0.787 = 1.024 + 0.992 + 0.787 = 2.803
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3 0
3 years ago
A cone with a radius of 3" has a total area of 24π sq. in. Find the volume of the cone.
Rus_ich [418]
The answer is 12π.

To get the volume of the cone, we need the height. The radius is given.

V = πr² × (h/3)

The total surface area of the cone is:
SA = πr² + πrl where r is radius and l is slant height

24π = π(3)² + π(3)(l)
24π = 9π + 3πl
24π - 9π = 3πl
15π = 3πl
l = 15π / 3π
l = 5

Using Phytagoras, we can calculate the height of the cone:
l² = h² + r²
5² = h² + 3²
25 - 9 = h²
h = √16
h = 4

Therefore the volume is:
V = π(3)² × (4 / 3)
V = 3π × 4
V = 12π
5 0
3 years ago
Read 2 more answers
What is the value of X given that the two triangles are similar.
grin007 [14]

Answer:

x = 13

Step-by-step explanation:

ΔRST≈ΔYSZ

therefore:

RT/ST = YZ/SZ

(3x-7)/40 = (2x+2)/35

cross-multiply:

40(2x+2) = 35(3x-7)

80x+80 = 105x-245

80 = 25x-245

325 = 25x

325/25 = x

x = 13

3 0
3 years ago
Please can you help me 1-1
Readme [11.4K]

Answer:

0

Step-by-step explanation:

3 0
3 years ago
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