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Dmitry [639]
3 years ago
10

The length of the hypotenuse of a right triangle is 157 units. The length of one leg of the triangle is 132 units. Lara wrote th

e following step to find the length of the unknown leg: Length of the unknown leg = 1572 − 1322 = 24,649 − 17,424 = 7,225 units Which statement best explains whether Lara's step is correct or incorrect?
Mathematics
1 answer:
just olya [345]3 years ago
8 0

Answer:

24649-17424=7225 UNITS

Step-by-step explanation:

This step implies that Lara was using the Pythagoras theorem to find the missing length of the right triangle.

a²+b²=c², taking a and b to be the  two lengths adjoined by the right angle and c the hypotenuse.

Laura's step represents the step above.

157²=24649

132²=17424

157²-132²=c²

24649-17424=7225

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A woman bought 50 meters of cloth at 60 cedis . she sold the cloth at 1.50 cedis per meter. Find her percentage profit.​
Usimov [2.4K]

Answer:

<em>2</em><em>5</em><em> </em><em>%</em>

Step-by-step explanation:

Cost price = 60 Ghana cedis for 50 metres

Selling price = 1.50 cedis for 1 meter

x cedis for 50 meters

Cross multiply

Selling price = 75 cedis

Profit = Selling price - Cost price

75 - 60

Profit = 15

Profit % =

\frac{profit}{cost \: price}  \times  \frac{100}{1}  \\  \frac{15}{60}  \times  \frac{100}{1}  \\  \\

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5 0
3 years ago
a circuit overloads at 1800 watts of electricity you plug a microwave oven that uses 1100 watts into the circuit write and solve
Bogdan [553]
Let w be the additional watts you can add on the circuit.

1100 + w < 1800 (write the inequality)
-1100 -1100 ( - 1100 from each side)

w < 700 (simplify)


ANSWER:
You can add up to 700 watts to the circuit, which means that you can also plug in the clock radio and the blender.


LOOK BACK:
You can check that your answer is correct by adding the numbers of watts used by the microwave oven, clock radio and blender.

1100 + 50 + 300 = 1450

The circuit will not overload because the total wattage is less than 1800 watts.
5 0
3 years ago
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Please some help for question 1
o-na [289]

Answer:

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Step-by-step explanation:

f (3) means that x is equal to 3 [hence f (x) ---> f (3)]

Plugin 3 into all the x values to solve:

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Alexxandr [17]

The answer is D. 3(x+4)

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