2 years ago

3⋅ (3⁴) = 3x= What does x equal to?

Mathematics

1 answer:

sergeinik [125]2 years ago

6 0

X=27
81 = 3x= 27
So x means 27

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Change 1/5 to a decimal with work shown

uranmaximum [27]

Answer:

1/5=2/10 2/10=.2

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3 years ago

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What are the x- and y-intercepts of a line that passes through (5, 18) with a slope of 2?

WINSTONCH [101]

18=2(5)+b
b=8 y intercept is 8

0=2(x)+8
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3 years ago

9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9

gladu [14]

Answer: a) (176.76,172.24), b) 0.976.

Step-by-step explanation:

Since we have given that

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Standard deviation = 6.9 cm

n = 50

we need to find the 98% confidence interval.

So, z = 2.326

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$x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)$

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3 years ago

Multiply.

sergij07 [2.7K]

Answer:

D) 2x² + 4x - 30

Step-by-step explanation:

Follow the FOIL method:

FOIL =

First

Outside

Inside

Last

...and is the order you multiply to solve:

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(5)(-6) = -30

Combine like terms. Simplify:

2x² -6x + 10x - 30 = 2x² (-6x + 10x) - 30 = 2x² + 4x - 30

2x² + 4x - 30 is your answer.

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3 years ago

Noel has 5/6 of a yard of purple ribbon and 9/10 of a yard of pink ribbon. How much ribbon does she have altogether?

Rom4ik [11]

You get 14/16 and when you simply you then get 7/8.

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3 years ago

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