0.297 x 7.1 = 297 + 20790 / 21.087 is it true or false

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn