PSK2(5/7)+1(1/4)=(2+(5/7)+(1+(1/4)))
=(2+1)+(5/7)+(1/4)
=3+(20/28)+(7/28) \ \ [lcm(7,4)=28]
=3+27/28
=3(27/28)ZSK

Question

asked 2020-11-14

Write the reciprocal of each of the following:

\(\displaystyle{a}.{\frac{{{1}}}{{{8}}}}\)

\(\displaystyle{b}.{\frac{{{7}}}{{{12}}}}\)

\(\displaystyle{c}.{\frac{{{3}}}{{{5}}}}\)

\(\displaystyle{d}.{1}{\frac{{{1}}}{{{2}}}}\)

\(\displaystyle{e}.{3}{\frac{{{3}}}{{{4}}}}\)

f. 6

\(\displaystyle{a}.{\frac{{{1}}}{{{8}}}}\)

\(\displaystyle{b}.{\frac{{{7}}}{{{12}}}}\)

\(\displaystyle{c}.{\frac{{{3}}}{{{5}}}}\)

\(\displaystyle{d}.{1}{\frac{{{1}}}{{{2}}}}\)

\(\displaystyle{e}.{3}{\frac{{{3}}}{{{4}}}}\)

f. 6

asked 2020-11-23

Modeling: Draw models to represents \(\displaystyle\frac{{3}}{{4}}\) and \(\displaystyle{2}{\left(\frac{{3}}{{5}}\right)}\).

asked 2021-02-13

un atleta debe recorrer 30 km en sus ultimos 5 dias de preparacion para una competencia. el primer dia recorre \(\displaystyle{\frac{{{23}}}{{{2}}}}\) km, el segundo \(\displaystyle{\frac{{{15}}}{{{4}}}}\) km, el tercer dia \(\displaystyle{\frac{{{16}}}{{{3}}}}\) km y el cuarto dia \(\displaystyle{\frac{{{35}}}{{{6}}}}\) km. ¿cuanto km recorrió el atleta en estos cuatro dias?

asked 2021-03-07

The amount of error allowed in the size of structural steel is \(\displaystyle\frac{{1}}{{10}}\) of 1%. If an I beam is 7.2 inches deep, what, in inches, is the amount of error allowed?

asked 2021-02-02

\(\displaystyle\frac{{\frac{{5}}{{7}}}}{{\frac{{5}}{{6}}}}\)

asked 2021-02-14

One cake recipe calls for \(\displaystyle\frac{{2}}{{3}}\) cup of sugar. Another recipe calls for \(\displaystyle\frac{{1}}{{4}}\) cups of sugar. How many cups of sugar are needed to make both cakes?

asked 2021-01-23

How many tenths are there in \(4/5\)?

asked 2021-01-27

Draw a diagram to represent the situation. Start by drawing a segment to represent the distance between Sam and the base of the building. Place a point on the segment and label the portion from Sam to this point as 1.22 m and the other portion as 7.32 m. Then draw two right triangles that have right angles at the endpoints of the first segment. Label the height for Sam's triangle as 1.82 m and the height of the building's triangle as h:

asked 2020-11-08

A flying distance is 800 km. If this distance on a map is 5 cm, what is the scale factor? Hint: 1 km = 100000 cm.

asked 2021-02-13

Jamal hiked on two trails. The first trail was \(\displaystyle{3}\frac{{1}}{{3}}\) miles long, and the second trail was 1 \(\displaystyle\frac{{3}}{{5}}\) times as long as the first trail. How many miles did Jamal hiked ? Answer as a mixed number in simplest form.