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3 years ago

Kenny reads 4 9 page in 3 4 minute.

Mathematics

1 answer:

NeX [460]3 years ago

3 0

Answer:

Step-by-step:

It takes him 1.4 minutes to read one page.

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Round these numbers to the nearest 1000 a) 45 678 b) 24 055 c) 50 505

ELEN [110]

Answer:

A. 46,000

B. 24,000

C. 51,000

Step-by-step explanation:

Follow the rule, 5 or over round up.

8 0

2 years ago

Read 2 more answers

Vertical? Supplementary? Right? Complementary?

Reika [66]

Answer:

Step-by-step explanation:

because we know that angle EOD is less the 90 so that means that it is complementary. For AOB it is the same but we can check by adding 35 plus x plus 90 =180 degrees so 35+90=125 x=180-125=55 so x=55 and 55 is less then 90 so it is a complementary angle.

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3 years ago

If AB=20, then AB+CD=?

Leona [35]

Answer:

20*20+CD=400+CD

Step-by-step explanation:

Multiply

6 0

3 years ago

The number of books borrowed from a library each week follows a normal distribution. When a sample is taken for several weeks, t

Marat540 [252]

$\mathbb P(X>250)=\mathbb P\left(\dfrac{X-190}{30}>\dfrac{250-190}{30}\right)=\mathbb P(Z>2)\approx0.0228$

Or, if you're familiar with the empirical rule and the basic properties of the normal distribution, you can use the fact that approximately $95/%$ of the distribution lies within two standard deviations of the mean, or

$\mathbb P(|Z|$

which means about $5\%$ of the distribution lies outside this interval, or

$\mathbb P((-22))\approx0.05$

Because the distribution is symmetric, you have

$\mathbb P(-22)$
$\implies \mathbb P((-22))=\mathbb P(-22)=2\mathbb P(Z>2)\approx0.05$
$\implies \mathbb P(Z>2)\approx 0.025$

8 0

3 years ago

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When the following quadratic equation is written in general form, what is the value of "c"?

Artyom0805 [142]

It will be negative 2,cause your equation is already in general form but we can't have a negative on a, so we should changed it on their opposite sign, so 2 will be negative

8 0

3 years ago

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