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3 years ago

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Maria's father is 20 years older than Maria Write an expression that will represent the age of Maria's father use a variable and

identify what your variable stands for

1 answer:

abruzzese [7]3 years ago

4 0

Let's make "x" the variable for Maria's age.

And since Maria's father is 20 years older than Maria:

Age of Maria's Father = x + 20.

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Sam and Bobby want to know who cycled faster. The table shows the total miles Sam traveled over time. The graph shows the same r

tigry1 [53]

Answer:

<h2>Sam cycled fast, at a rate of 10 miles per hour.</h2>

Step-by-step explanation:

To solve this problem we have to find the slope of each case. The definition of a slope is:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\$

Where $(x_{1};y_{1})$ is the first point, and $(x_{2};y_{2})$ is the second point.

Let's find each slope.

<h3>Sam.</h3>

Let's use the points $(2;20)$ and $(5;50)$

Applying the definition of the slope, we have:

$m_{sam} =\frac{50-20}{5-2}=\frac{30 \ miles}{3 \ hour}=10 \ miles/hour$

This relation means that Sam cycled 10 miles per hour.

<h3>Bobby.</h3>

Let's use the points $(2;18)$ and $(6;54)$

$m=\frac{54-18}{6-2}=\frac{36 \ miles}{4 \ hour}=9 \ miles/hour$

Bobby cycled 9 miles per hour.

Therefore, according to these ratios, Sam cycled fast, at a rate of 10 miles per hour.

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3 years ago

0.8 as a fraction in simplest form

Tju [1.3M]

The answer would be 4 over 5 or 4/5

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Graph the equation by plotting three points. If all three are correct the line will appear 2y=x+2

Temka [501]

Answer:

(-2,0) and (0,1)

I could be way off

Step-by-step explanation:

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lukranit [14]

Answer:

is there anything else to the question?

Step-by-step explanation:

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3 years ago

A system of equations is shown below: Equation A: 4c = d − 8 Equation B: c = 5d + 8 Which of the following steps should be perfo

Alchen [17]

<span>Equation A: 4c = d − 8
</span><span>Equation B: c = 5d + 8
</span>
Multiply Equation A by -5:
Equation A: - 20c = -5d + 40

Equation (1) + (2) :
-19c = 48

Answer: <span>B. Multiply equation A by -5</span>

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3 years ago