How many ways can the letters in the word laughter be arranged if the g must be followed by the h?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Find the value of x. give reasons to justify your solutions! h ∈ ig

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?