2 years ago

PLZZ HELP ME!! MEDAL

Mathematics

2 answers:

solniwko [45]2 years ago

7 0

X = 90-22
x = 68
..............

Sloan [31]2 years ago

5 0

So since you know that the upper right angle is 90 degrees (that's what the little box means) you know that it's opposite angle has he same measurement.

The angle opposite of the box is 22+x degrees.

We now have the equation 90=22+x

Just solve for x

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(2.5×10−8)(9×10−10)<br><br> Express your answer in scientific notation.

Lunna [17]

Answer: 2.25x $10^{-17}$

Scientific notation is used in science because the number can be vary from so much that using decimal is making it hard. The number expressed in $10^{x}$ form. Both number in the question is already in scientific notation. Then to multiply the number and keep it at scienfitic notation the calculation should be:

2.5 x $10^{-8}$ x 9 x $10^{-10}$ = 22.5 x $10^{-18}$ = 2.25x $10^{-17}$

6 0

2 years ago

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Find the area of the shaded figure in the diagram below. Use 3.14 for π and round your answer to the nearest hundredth.

kirill [66]

Answer:

Step-by-step explanation:

diameter of 1 circle = 21.3/3= 7.1

radius of 1 circle= 7.1/3=3.55

area of 1 circle =πr^2=3.14× (3.55)^2=39.57

area of 3 circle= 39.57×3=118.72

therefore,area of shaded portion= area of 3 circle =118.72