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snow_lady [41]
3 years ago
15

CAN SOMEONE HELP?????????????????????????????????

Mathematics
2 answers:
Likurg_2 [28]3 years ago
7 0

Answer: perpendicular = 5/7

parallel = -7/5

Step-by-step explanation:

Zanzabum3 years ago
5 0

Answer:

5/7 and -7/5

Step-by-step explanation:

slope is - 7/5

if line is written as Ax + By + C = 0

the slope is -A/B

if you work that equation you have

By = - Ax - C

y = (-A/B) × x - C/B

and term multiplying the x is the slope in case you had doubts about the - A/B

the multiplication of the slopes of 2 lines that are perpendicular is - 1

x × -7/5 = -1

x = 5/7

the slope of 2 lines that are parallels is the same, so slope = -7/5

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Write the following in correct mathematical language: 45.23
dexar [7]

Forty-five and twenty-three hundredths.

In general, with decimals, the first place value after the decimal is read as a tenth, the second is read as a hundredth, the third is read as a thousandth, and so on. In front of the decimal, we know that 4 is in the tens place and 5 is in the ones place, so we say forty-five. Past the decimal, 2 is in the tenths place (think about how 2/10 = .2, which is "two-tenths") and 3 is in the hundredths place (think about how 23/100 = .23). You read the number after the decimal like normal ("twenty-three," "two-hundred fifteen," etc), then you add the place ("tenths, hundredths, ten-thousands") at the very end.

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2 years ago
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hichkok12 [17]

Answer:

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3 years ago
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2 years ago
Need help again asap please! Find the sum of the first 30 terms of the sequence below an=3n+2
hoa [83]

S_{30} = 1455

generate a few terms of the sequence using a_{n} = 3n + 2

a_{1} = ( 3 × 1) + 2 = 5

a_{2} = (3 × 2) + 2 = 8

a_{3} = (3 × 3 ) + 2 = 11

a_{4} = (3 × 4 ) + 2 = 14

a_{5} = ( 3 × 5 ) + 2 = 17

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d = 8 - 5 = 11 - 8 = 14 - 11 = 3 and a_{1} = 5

S_{30} = \frac{30}{2} [( 2 × 5) + (29 × 3) ]

= 15( 10 + 87) = 15 × 97 = 1455



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