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lawyer [7]
2 years ago
13

Which equation can be used to find the unknown length, b, in this triangle?

Mathematics
1 answer:
lisabon 2012 [21]2 years ago
8 0

Answer: Choice A

4^2 + b^2 = 5^2

This is due to the pythagorean theorem.

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Ellen says that 1 2/5 equal 5/7. Is she correct? Explain.
Akimi4 [234]

Answer:

no

Step-by-step explanation:

1 2/5 has a whole and a fraction where as 5/7 only has a fraction

3 0
3 years ago
Read 2 more answers
09:57:09
Sveta_85 [38]
8 cm and 9 cm is the correct answer
8 0
3 years ago
Express 78 billion in scientific notation
ryzh [129]

Answer:

7.8 * 10^{10} is scientific notation of 78 billion

Step-by-step explanation:

For scientific notation , follow the following notation:

a * 10^{b} -------->(equation 1)

Let,  a^{'} = 78 billion

a^{'} = 78000000000

a^{'} = 78000000000.0

In standard form

a = 7.8000000000

or

a = 7.8

As decimal point move 10 places from right to left, therefore

b = 10

Put the value of 'a' and 'b' in (equation 1)

7.8 * 10^{10} is scientific notation of 78 billion

6 0
3 years ago
What is 24 − 6 × 3 + 5x^{2} − (16 ÷ 2)?
Andrew [12]
<span>y=3x^2-30x-7  there u go</span>
5 0
3 years ago
Correct Answers only please!
Tcecarenko [31]

Answer:

C. $97

Step-by-step explanation:

The average of his wage for all 15 days is the sum of all wages for the 15 days divided by 15.

average wage for 15 days = (sum of wages for the 15 days)/15

The amount of wages during a number of days is the product of the average wage of those days and the number of days.

First 7 days:

average wage: $87

number of days: 7

total wages in first 7 days = 7 * $87/day = $609

Last 7 days:

average wage: $92

number of days: 7

total wages in last 7 days = 7 * $92/day = $644

8th day:

wages of the 8th day is unknown, so we let x = wages of the 8th day

total wages of 15 days = (wages of first 7 days) + (wages of 8th day) + (wages of last 7 days)

total wages of 15 days = 609 + x + 644 = x + 1253

average wage for 15 days = (sum of wages for the 15 days)/15

average wage for 15 days = (x + 1253)/15

We are told the average for the 15 days is $90/day.

(x + 1253)/15 = 90

Multiply both sides by 15.

x + 1253 = 1350

Subtract 1253 from both sides.

x = 97

Answer: $97

3 0
3 years ago
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