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Elena L [17]
2 years ago
8

Constant of proportionality?

Mathematics
1 answer:
Anna11 [10]2 years ago
6 0

Answer:

12

Step-by-step explanation:

uhh division

hope this helped! :)

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What is the slope between the points (3,-4)&(7,6)?
olchik [2.2K]

Answer: The slope is \frac{5}{2}

Step-by-step explanation:

1. You need to apply the following formula for calculate the slope:

m=\frac{y_{2}-y_1}{x_{2}-x_1}

2. Given the points, (3,-4) and (7,6), you have:

y_{2}=6\\y_1=-4\\x_{2}=7\\x_{1}=3

3. Substitute these values into the formula for calculate the slope, as following:

m=\frac{6-(-4)}{7-3}\\m=\frac{10}{4}

4. Simplify the result. Therefore, you obtain that the slope is:

m=\frac{5}{2}


5 0
3 years ago
Please find the surface area of a sphere with a volume of 36
natta225 [31]

Answer:

12 is the answer

Step-by-step explanation:

I just know the answer

7 0
3 years ago
Read 2 more answers
Factor each trinomial completely.<br> 4x^2 - 25b^2 and x^2 - 81
GenaCL600 [577]

Step-by-step explanation:

4x2 - 25b2

We can solve it by the squares so

(2x - 5b) (2x + 5b)

2) x2 - 81

The same case is here so

(x - 9) (x + 9)

8 0
3 years ago
Problem: According www.textrequest, an American between 18-24 sends and receives about 128 text messages per day. Assume that th
borishaifa [10]

Answer:

(130.08, 139.92)

Step-by-step explanation:

Given that:

Mean (m) = 135

Standard deviation (σ) = 30

Sample size (n) = 100

α = 90%

The confidence interval value is obtained using the relation:

Mean ± Zcritical * (standard deviation / sqrt(n))

Zcritical at 90% = 1.64

standard deviation / sqrt(n) = 30 / sqrt(100)

= 30 / 10 = 3

Hence,

135 ± 1.64 * (3)

Lower limit : 135 - (1.64 * 3) = 130.08

Upper limit : 135 + (1.64 * 3) = 139.92

Hence,

Confidence interval = (130.08, 139.92)

8 0
3 years ago
1. Work in small groups. Perform the experiment described in Sample 1.
zavuch27 [327]

Answer: 12.6

Step-by-step explanation:

3 0
3 years ago
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