3 years ago

How can transformations be used to determine congruency? I will give you 20 points. I really need help.

Mathematics

1 answer:

DedPeter [7]3 years ago

3 0

If you move and rotate the shapes and they perfectly line up then they are congruent.

Hope this helps :)

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Jeffrey ate out for lunch his meal cost 10.50 he would like to leave an 18% tip. how much does the lunch cost in total?

Mila [183]

Answer:

12.39

Step-by-step explanation:

18% 10.50 = 1.89

10.50+1.89 = 12.39

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3 years ago

Marcos purchased a sail boat for $56,900. He anticipates each year the boat will decrease in value by 8.1% from the previous yea

Varvara68 [4.7K]

Answer: $56,900\left( 0.919\right)^x$

Step-by-step explanation:

Given

Marcos purchased a sailboat for $\$56,900$

Each year the boat will decrease in value by $8.1\%$

After 1 year it is

$\Rightarrow 56,900-56,900\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\\$

after another year it becomes

$\Rightarrow 56,900\left( 1-0.081\right)-56,900\left( 1-0.081\right)\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\cdot \left( 1-0.081\right)\\\Rightarrow 56,900\left( 1-0.081\right)^2$

After $x$ years it is

$\Rightarrow 56,900\left( 1-0.081\right)^x$

$\Rightarrow 56,900\left( 0.919\right)^x$

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2 years ago

A grapefruit weighs 0.25 kilograms a lemon weighs 0.24 times as much as the grapefruit how many kilograms did the lemon weigh

lesantik [10]

Answer:

The lemon weighs 0.06 kilograms.

Step-by-step explanation:

0.25*0.24=0.06

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3 years ago

Convert the mixed number to an improper fraction. 6 7/8

zepelin [54]

6 * 8 + 7 = 48 + 7 = 55

55/8

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2 years ago

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HELP!!! 30 points!

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3 years ago

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