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Mila [183]
3 years ago
10

-19.78 is rational or irrational

Mathematics
1 answer:
Bess [88]3 years ago
7 0
Is irrational because Star with number more and 1.
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How can tell if a table values is proportional
Gnoma [55]

Answer:

You can

Step-by-step explanation:

To see if multiple ratios are proportional, you could write them as fractions, reduce them, and compare them.

7 0
2 years ago
Read 2 more answers
Two cars leave the same location traveling in opposite directions. One car leaves at 3:00 p.m. traveling at an average rate of 5
sergey [27]
Recall your d = rt,   distance = rate * time

thus \bf \begin{array}{lccclll}
&distance&rate&time(hrs)\\
&-----&-----&-----\\
\textit{first car}&d&55&x\\
\textit{second car}&380-d&75&x+1
\end{array}\\\\
-----------------------------\\\\

\begin{cases}
\boxed{d}=(55)(x)\\\\
380-d=(75)(x+1)\\
----------\\
380-\left( \boxed{(55)(x)} \right)=(75)(x+1)
\end{cases}

notice, the first car leaves at "x" time, the other leaves on hour later, or x + 1

the first car travels some distance "d", whatever that is, thus
the second car, picks up the slack, or the difference, they're 380 miles
apart, thus the difference is 380-d
8 0
3 years ago
The dependent variable, y is 7 more than 1/2 the independent variable, x.
san4es73 [151]
Y=(x/2)+7 as an equation if that is what you are asking
8 0
2 years ago
How can one determine the number of x-intercepts of the graph of a quadratic function without graphing the function?
velikii [3]

Answer:

The easiest method is to find the x-intercepts of the quadratic function by substituting y=0 in the function and solving it to find the possible values of x. The number of all possible values of x is the number of x-intercepts of the graph.

5 0
2 years ago
How do you simplify 5/7/15
Natali [406]

Answer:

10 5/7.

Step-by-step explanation:

In words we say this is ' 5 divided by 7/15'.

5 / 7/15

= 5 * 15/7

= 75/7

= 10 5/7


8 0
3 years ago
Read 2 more answers
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