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Phoenix [80]
3 years ago
9

The equation c = 2000 + 3r represents the cost in dollars (C) of producing remote

Mathematics
1 answer:
ladessa [460]3 years ago
8 0

Answer:

The cost of producing 1000 remote controls is $5000.

Step-by-step explanation:

You have to substitute r = 1000 into the expressions :

c = 2000 + 3r

let \: r = 1000

c = 2000 + 3(1000)

c = 2000 + 3000

c = 5000

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Dr. Christina Cuttleman, a nutritionist, claims that the average number of calories in a serving of popcorn is 75 with a standar
taurus [48]

Answer:

a) T test

b) Claim

because critical value is not equal to test statistic then reject null hypothesis

Step-by-step explanation:

Construction of hypothesis

H₀  : p = 75

H₁  : p  ≠ 75

Here Standard deviation = 7

sample = n = 50

Average = x-bar = 78

Level of significance:

∝ = 5% = 0.05

Degree of freedom:

df = n-1

  = 50 -1 = 49

Critical value :

± 1.96

a) T test

test t is  used as average X mean is used

Test Statistic:

t = X₂ - X₁ / Sd /√n

= 78 - 75 / 7/√50

=3.0304

Critical region :

We take two tail T test

test statistic is in reject interval. Reject H₀

b) Claim

because critical value is not equal to test statistic then reject null hypothesis

5 0
4 years ago
Please help I will mark brainlist if correct
Furkat [3]
Hi there!

Since the slope of a line perpendicular to a line is always the negative inverse of that slope, you just switch the numerator and denominator around and add or omit the negative sign to the original slope.

The answer would be -2.

Hope this helps!
5 0
3 years ago
What is 10 divided by 78?
pychu [463]

Answer:

5/39

Step-by-step explanation:

10divided by 78 is 10/78.

you can simplify it to 5/39

this is the simplest form

8 0
3 years ago
Solve, using linear combination.
alexandr1967 [171]
P - q = 8.....multiply by -1
2p - q = 19
----------------
-p + q = -8 (result of multiplying by -1)
2p - q = 19
---------------add
p = 11

now we sub 11 in for p in either of the original equations to find q
p - q = 8
11 - q = 8
11 - 8 = q
3 = q

so ur solution is (11,3)
3 0
3 years ago
What are the coordinates of point A?​
Ratling [72]

Answer:

  (d)  (7, -5)

Step-by-step explanation:

The x-coordinate is listed first in an ordered pair. It is found on the horizontal scale. The point is on the grid line halfway between 6 and 8, so is presumed to have an x-coordinate of 7.

The y-coordinate is listed second in an ordered pair. It is found on the vertical scale. The point is on the grid line halfway between -4 and -6, so is presumed to have a y-coordinate of -5.

The coordinates of point A are (x, y) = (7, -5).

__

<em>Additional comment</em>

As in the case here, you will often run across graphs that don't have markings on every grid line You are expected to be able to figure out the value of a grid line based on the spacing of the marked lines.

It is a good idea to get familiar with reading coordinates of a point on a graph, as you will be doing it a lot.

4 0
2 years ago
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