Add and write the fraction or mixed number in its simplest form 2/5+1/4+7/10=

My homework says to give my answer correct to 2 decimal places. Does anyone know what that means?

In an older television set, the screen height is 0.75 times the screen width. If a television set measures 20 inches along the diagonal, what is the screen width?

Kylie drank 35% of 400-mL container of water. Eugenia drank 45% of a 350-mL. Who drank more water? How do you know? I will have more questions I have a math packet due tomorrow and I don't know percents I listen but I just don't understand

Can you solve an equation two different ways and can you explain both methods

The ratio of keepers to animals in the city zoo is 2 : 7. The table shows the current numbers of animals and keepers in the zoo.

Determine the value of x which satisfies the following equation. ln (4x+1) = 6

Wide all along its perimeter. What is an expression for A portrait without its frame has a height 1.5 times its width w, in inches.

What is the mode of the following data values 87, 39, 31, 52, 31

A 2 column table with 7 rows. The first column, x, has the entries, negative 2, negative 1, 0, 1, 2, 3. The second column, f (x) has the entries, 3, 3, 3, 3, 3, 3. A 2 column table with 7 rows.

Joanna recorded the number of laps she swam during practice in one week. Freestyle 100 Breaststroke 50 Backstroke 60 Butterfly 25 What is the value of the breaststroke to butterfly ratio? [Type your answer as a fraction in simplest form.