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3 years ago

A line passes through the point (-8,8) and has a slope of -3/2. Write an equation in point-slope form for a this line.

Mathematics

1 answer:

zhuklara [117]3 years ago

3 0

Answer:

y-8=-3/2(x+8)

Step-by-step explanation:

y-y1=m(x-x1)

y-8=-3/2(x-(-8))

y-8=-3/2(x+8)

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1A technical magazine stated that the mean retail cost of all models of a particular laptop was $600. A random sample of 10 stor

My name is Ann [436]

Answer:

Yes

Step-by-step explanation:

Given,

Population mean Z = 600

Sample mean, µ = 586.50

Size of the sample, n = 10

Standard deviation, σ = 26.77

The testing hypothesis is,

Null hypothesis = µ<600

Alternative hypothesis = µ≥600

The test statistics is the calculated value of Z,

(Z- µ)/(σ/√n)

= (600-586.50)/(26.77/√10)

= (13.5*3.1623)/26.77

= 42.691/26.77

= 1.5947

And at 5% level of significance, the table value of Z = 1.644

Here, calculated Z<Table value of Z, so we accept the null hypothesis.

So, the null hypothesis is accepted. The mean value of the laptop is less than 600.

3 0

3 years ago

27 1/5 over 4/5 as a unit rate

REY [17]

Answer:

$\frac{34}{1}$ or $34$

Step-by-step explanation:

we know that

To find the unit rate divide 27 1/5 by 4/5

but first

Convert mixed number to an improper fraction

$27\frac{1}{5}=27+\frac{1}{5}=\frac{27*5+1}{5} =\frac{136}{5}$

$\frac{136}{5}:\frac{4}{5}=\frac{136}{4}=\frac{34}{1}$

8 0

3 years ago

Help please!! Thank you :)

Softa [21]

My answer that i have gotten is 280

3 0

3 years ago

The ratio of two numbers is 4 to 3. The sum of the numbers is 49. What are the two numbers?

Irina-Kira [14]

Answer:

28/21

Step-by-step explanation:

28/21 is the equivalent to 4/3.

We know this is the fraction we are looking for because 28 + 21 = 49

Hope that helps!

4 0

2 years ago

!!!Factor each completely, please

frez [133]

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4. 79x - 3

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7. (x-4) (x + 9)

8. 2 (x + 4) (x + 6)

5 0

3 years ago