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3 years ago

Plzzzz help asappppppppppppp

Mathematics

1 answer:

densk [106]3 years ago

3 0

The answer is a. i promise.

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Luis hizo un viaje en el coche en el cual consumio 20 l de gasolina. el trayecto lo hizo en dos etapas en la primera consumio 2/

algol13

Answer: $24\ liters$

Step-by-step explanation:

Let be "x" the amount of gasoline in liters that the car's tank had at the beginning of the trip.

1. In the first part of the trip the amount of gasoline the car used can be expressed as:

$\frac{2}{3}x$

2. After the first part of the trip, the remaining was:

$x-\frac{2}{3}x=\frac{1}{3}x$

3. In the second part of the trip the car used $\frac{1}{2}$ of the remaining. This is:

$(\frac{1}{3}x)(\frac{1}{2})=\frac{1}{6}x$

4. The total amount ot gasoline used in this trip was 20 liters.

5. Then, with this information, you can write the following equation:

$\frac{2}{3}x+\frac{1}{6}x=20$

6. Finally, you must solve for "x" in order to find its value. This is:

$\frac{2}{3}x+\frac{1}{6}x=20\\\\\frac{5}{6}x=20\\\\5x=120\\\\x=24$

3 0

3 years ago

Ok so I only need help with the table and I need you to help me with the 2.50 one if you do this for points I report

crimeas [40]

Answer:

The green dots in this picture would be where the points go:

5 0

3 years ago

How to change a number written in scientific notation to standard notation.

saveliy_v [14]

In scientific notation, a number is usually?.?*10^??
for example:
1.3*10^-2
To write it in standard notation you can simply multiply it out
for example:
0.013

6 0

4 years ago

Which equation represents a line that passes through (–2, 4) and has a slope of ? y – 4 = 2/5(x + 2) y + 4 = 2/5(x – 2) y + 2 =

valentinak56 [21]

$\bf \begin{array}{lllll}
&x_1&y_1\\
% (a,b)
&({{ -2}}\quad ,&{{ 4}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies \cfrac{2}{5}
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-4=\cfrac{2}{5}[x-(-2)]
\\\\\\
y-4=\cfrac{2}{5}(x+2)$

7 0

3 years ago

Solve :2x/5 - 3x/4 = 3/10

Anarel [89]

Answer:

I hope it helps you

Step-by-step explanation:

2x/5-3x/4=3/10

> (8x-15x)/20=3/10

> -7x×10=3×20

> -70x=60

> -x=60/70

> x= -6/7

4 0

3 years ago

Read 2 more answers