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2 years ago

Use the given cost table for the same product from two different companies to create a linear syst

Mathematics

1 answer:

Brilliant_brown [7]2 years ago

5 0

Answer:

209 and 369 that's the answer

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Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $90 per hour. The mechan

Katena32 [7]

Answer:

First mechanic worked 20 hours and second mechanic worked 5 hours

Step-by-step explanation:

Let the number of hours the first mechanic worked = $a$

Let the number of hours the second mechanic worked = $b$

Therefore, we can write 2 equations and then solve them simultaneously:

$a+b=25$

$65a+90b=1750$

Rearranging the first equation: $a=25-b$

and substituting into the second equation to find $b$ :

$65(25-b)+90b=1750$

$1625-65b+90b=1750\\
25b=125\\
b=5$

Now sub $b=5$ into the first equation to find $a$

$a+5=25\\
a=20$

Therefore, first mechanic (a) worked 20 hours and second mechanic (b) worked 5 hours

4 0

1 year ago

6(a)If the gradient of the straight line

tensa zangetsu [6.8K]

Answer:

(i) k =1

(ii) y-intercept is 7

Step-by-step explanation:

Given line:

ky = kx + x + 7

Divide all terms by k to get slope-intercept form of the line

y = (1 + 1/k)x + 7/k

Since the gradient (slope) of the line is 2:

1 + 1/k = 2
1/k = 1
k = 1

The equation is now:

y = 2x + 7

y - intercept is found when x = 0

x = 0 ⇒
y = 2*0 + 7
y = 7

5 0

2 years ago

What are the mean, median, and mode of the data in the following sample?

Leto [7]

Answer:

Step-by-step explanation: You have to add all the numbers together for the mean then for the median you put them in order from least to greatest. Then put your finger on the first and last number and start counting down until you have the middle number.

6 0

2 years ago

I don’t really know math so...

lubasha [3.4K]

Y= 5, 2, 1, 2,5

............

3 0

2 years ago

(0.1296)^3/4 of law of indices plz step by step

Serjik [45]

Answer:

$\boxed {\frac{27}{125}}$