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larisa [96]
3 years ago
14

A student found the slope of a line that passes through the points (-8, -6) and (2, -3) to be 3/10.

Mathematics
1 answer:
blondinia [14]3 years ago
5 0
D she is correct because if you use the formula to find a slope it gives u 3/10

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Lf x+1/x=12 then find the value of x3+1/x3​
Tresset [83]
Answer:

Explanation:

First we find what x is:
x + 1/x = 12
x + 1 = 12x
1 = 12x - x
1 = 11x
1/11 = x
Or x = 1/11

Plug x value in x^3 + 1/x^3

(1/11)^3 + 1/(1/11)^3
= (1^3/11^3)+ 1/(1^3/11^3)
= (1/1331 + 1)/1/1331
= (1/1331 + 1331/1331)/1/1331
= 1332/1331 x 1331/1
= 1332/1
= 1332

Therefore, x^3 + 1/x^3 = 1332
4 0
3 years ago
A contractor is building the base of a circular fountain. On the blueprint, the base of the fountain has a diameter of 18 centim
Daniel [21]
The answer is 1808.64 ft²

To calculate area of square we need to find radius r. Radius is a half of a diameter:
r = d/2

The blueprint:
d = 18 cm
r = 18/2 = 9 cm

<span>The blueprint has a scale of three centimeters to four feet. Actual radius r1 is:
</span>3 cm : 4 ft = 18 cm : r1
After crossing the products:
r1 = 4 ft * 18 cm : 3 cm
r1 = 24 ft

The area of the circular base of the fountain is:
A = r1² * π
π = 3.14
r1 = 24 ft

A = 24² * 3.14
A = 1808.64 ft²
3 0
3 years ago
What is 2(8x-3) -4(3x-5)=19
vladimir1956 [14]

Answer:

5/4

Step-by-step explanation:

2(8x-3)-4(3x-5)=19

16x-6-12x+20=19

16x-12x-6+20=19

4x+14=19

4x=19-14

4x=5

x=5/4

7 0
3 years ago
( 144 + 6 x 8 ) ÷ 3 = g
UNO [17]
<span>( 144 + 6 x 8 ) ÷ 3 = g
(144 + 48) </span>÷ 3 = g
192 ÷ 3 = g
64 = g or g = 64
4 0
3 years ago
How long (to the next whole year) will it take
fomenos

Step-by-step explanation:

2x = x1.2^n

2 = 1.2^n

log1.2(2) = n

log10(2)/log10(1.2) = n = 3.801784017...

so, rounded to the next whole year it takes 4 years.

6 0
2 years ago
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