4. The length of the base of a triangle is 8.2cm. The area of the triangle is 39.77 cm2.
Shen works out that the perpendicular height of the triangle is 7.9cm
a. Without using a calculator, explain how you can tell that Shen is wrong.
b. Work out the perpendicular height of the triangle
39.77 cm2
8.2cm
c. What mistake do you think, Shen made?

(Can you guys help me here is the the picture can you help me pls)

Combine like terms to make a simpler expression 3z+z

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

Scenario: a rectangular plot of ground is 5 meters longer than it is wide. its area is 20,000 square meters. question: what equation will you find the dimensions? note: let w represent the width. options: w(w+5)=20,000 w^2=20,000+5 (w(w+5))/2=20,000 w+2(w+5)=20,000