2 years ago

Please help please help please help

Mathematics

1 answer:

Elena-2011 [213]2 years ago

6 0

Answer:

Step-by-step explanation:

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AOC and BOD are diameters of a circle, centre O. Angles BAD and CDA are 90°. Prove that triangle AND and triangle DCA are congru

ololo11 [35]

Answer:

By using SAS which stands for Side, Angle, Side.

Step-by-step explanation:

This means that if we have two angles and side measures that are equal to the corresponding angles and side measures of the other triangle then they are congruent.

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2 years ago

Show me how to solve 10>x/2 +4

postnew [5]

Treat this as if the inequality sign was the same thing as an equal sign. Most of the equality rules apply to inequalities (with a few exceptions)

$10>\dfrac{x}{2}+4$

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$6>\dfrac{x}{2}$

Multiply both sides by 2

$2\times6>\dfrac{x}{2}\times2$

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Nan rode the roller coaster 8 times, which was twice as many times as she rode the F erris wheel

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So she rode the Ferris Wheel 4 times. 8/2= 4

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3 years ago

Rick knows that 1 cup of glue weighs 1/18 pound. He has 2/3 pound of glue. How many cups of glue does he have?

Basile [38]

$\begin{array}{ccc}1\ cup&-&\frac{1}{18}\ lb\ (pound)\\\\x\ cup&-&\frac{2}{3}\ lb\ (pounds)\end{array}\ \ \ \ \ \ cross\ multiply\\\\\\\frac{1}{18}x=1\times\frac{2}{3}\\\\\frac{1}{18}x=\frac{2}{3}\ \ \ \ \ \ |multiply\ both\ sides\ by\ 18\\\\18\times\frac{1}{18}x=18\times\frac{2}{3}\\\\x=6\times2\\\\\boxed{x=12}\\\\Answer:He\ has\ 12\ cups\ of\ glue.$

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3 years ago