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kozerog [31]
3 years ago
7

Do these pairs of values (x and y) represent two quantities that are

Mathematics
1 answer:
Alisiya [41]3 years ago
8 0
B. Yes, because as x increases, y also increases

X Y
1 5 (1 x 5)
2 10 (2 x 5)
3 15 (3 x 5)
5 25 (5 x 5)
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Which expression is undefined ?
satela [25.4K]

Answer:

A

Step-by-step explanation:

8/(-2+2) is just 8/0 and anything divided by 0 is undefined

7 0
2 years ago
Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it
Alexeev081 [22]
We can solve this problem by calculating the individual rate of working and equate it to their total rate of working.

If Dave can complete a sales route in 4 hours, then his working rate is

\frac{1}{4}

Also, if James can do it in 5 hours, then his working rate is

\frac{1}{5}

Let
x
be the hours that both will use to complete the sales route,

Then rate at which both completes this task is
\frac{1}{x}


Meaning if we add their individual rates we should get

\frac{1}{x}

That is;

\frac{1}{4} + \frac{1}{5} = \frac{1}{x}

The LCM is
20x

So let us multiply through with the LCM.

20x \times \frac{1}{4} + 20x \times \frac{1}{5} =20x \times \frac{1}{x}

5x + 4x = 20

We simplify to get,

9x = 20

Dividing through by 9 gives;

x = \frac{20}{9}

x = 2\frac{1}{9}

Therefore the two will complete sales route in
2 \frac{1}{9}
hours.
3 0
3 years ago
B is the midpoint of AC, what in the measure of AB if AC 82cm?​
Bess [88]

Answer:

AB = 41 cm

Step-by-step explanation:

If B is the midpoint of AC, then B splits AC into 2 equal halves: AB & BC.

Therefore, AB = ½ of AC.

Given, AC = 82 cm.

So,

AB = ½ × AC

AB = 82/2

AB = 41 cm

_____

Hope it helps ⚜

8 0
2 years ago
Brian invested $3,000 in an account that paid a simple interest rate of 1.7%. When he cashed in the investment, he received $306
lesya692 [45]

Answer:

$165

Step-by-step explanation:

8 0
2 years ago
How many roots does a linear equation have?
Semmy [17]

Answer:

1 root

Step-by-step explanation:

A linear equation should only cross the x-axis at one point. That means there would only be 1 root. (Root is when y= 0)

6 0
3 years ago
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