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2 years ago

9

A computer's hard disk drive holds 80000000 bytes of information. If Jill buys an extra memory stick that holds 30000000 bytes o

f information, how much memory will the computer hold?

1 answer:

Tanzania [10]2 years ago

3 0

Answer:

110000000 bytes, or 110 Megabytes (MB)

Step-by-step exp

80000000 bytes (or 80MB) + 30000000 bytes (30MB)= 110000000 bytes (0r 110MB)

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Lillian works 7hours each day for 5 days a week she earn £420 each week how much does she earn per hour

frosja888 [35]

Answer:

£12 per hour

Step-by-step explanation:

7 × 5 = 35 hours

35 h : 420

1 h : x

x = 420×1 / 35

= £12 per hour

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3 years ago

The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,

bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

$\bar{x_1}=3.02\\\\\bar{x_2}=3.04\\\\\sigma_1=0.08\\\\\sigma_2=0.06$

So, s would be

$s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075$

So, the value of test statistic would be

$t=\dfrac{\bar{x_1}-\bar{x_2}}{s(\dfrac{1}{n_1}+\dfrac{1}{n_2})}\\t=\dfrac{3.02-3.04}{0.074(\dfrac{1}{50}+\dfrac{1}{25})}\\\\t=\dfrac{-0.04}{0.074(0.02+0.04)}\\\\t=\dfrac{-0.04}{0.044}\\\\t=-0.90$

Hence, the test statistic is t= -0.90.

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3 years ago

Match the expression with its equivalent expression? 4(x+3)

Sergeu [11.5K]

Answer:

4x+12

Step-by-step explanation:

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3 years ago

If you are smart put this emojiif u not smart put this emoji ok thanks

PtichkaEL [24]

Yesssss that is right

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3 years ago

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Luda [366]

If 3/7 is equal to 42 then 7/7 (100%) is = 98

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3 years ago

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