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3 years ago

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Mathematics

1 answer:

Yuri [45]3 years ago

5 0

Step-by-step explanation:

This can be put into fractions like this

Say x is the length of the missing dimension

8.5/11 = 10.5/x

Because the 2 drawings are SIMILAR, the ratio of their side lengths has to also be the same

8.5 ÷ 10.5 = 0.8095

11 × 0.8095 = 8.9047

Roung the answer to the nearest tenth

x = 8.9 in

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At a pizza shop, customers can select either crispy crust (C) or deep crust (D). Suppose that two customers place an order and s

Sonbull [250]

The sample space for this action of selecting crispy crust (C) or deep crust (D) by two persons are (C, C)(C, D)(D, C)(D, D).

<h3>What is a sample?</h3>

A sample is the collection of well-defined elements. A sample is represented by a capital letter symbol and the number of elements in the finite set is shown as curly bracket {..}.

At a pizza shop, customers can select either crispy crust (C) or deep crust (D).

Suppose that two customers place an order and select their crust.

The number of samples will be

Sample size = 2 × 2

Sample size = 4

The combination of the sample will be

Sample = (C, C)(C, D)(D, C)(D, D)

The sample space for this action of selecting crispy crust (C) or deep crust (D) by two persons are (C, C)(C, D)(D, C)(D, D).

More about the sample link is given below.

brainly.com/question/350477

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3 years ago

Convert 8.6 ha to km².<br> Remember to include units with your answer.

andrezito [222]

Answer:

0.086 sq km

Step-by-step explanation:

$\because \: 1 \: ha = 0.01 \: {km}^{2} \\ \therefore \: 8.6 \: ha = 8.6 \times 0.01 \\ \\ \red{ \boxed{ \bold{\therefore \: 8.6 \: ha = 0.086 \: {km}^{2} }}}$

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3 years ago

Assume that y varies inversely as x. If y = -8 when x = -9, find y when x = 4.

IrinaVladis [17]

Y α 1/x

y = k/x Where k is the constant of proportionality.

xy = k Cross Multiplying.

k = xy

Recall y= -8 when x = -9

k = -9 * -8 = 72

Finding y when x = 4.

k = xy

72 = 4y Divide both sides by 4.

y = 72/4 = 18.

y = 18.

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3 years ago

Niklas takes a dose of 25 micrograms of a certain supplement each day. The supplement has a half life of 4 hours, meaning that 1

MrRa [10]

Answer:

The amount of the supplement in Niklas' body immediately after the 12th dose is 4.30 micrograms.

Step-by-step explanation:

Half life is the time required for an element to decay into half of its initial size. The supplement has a half life of 4 hours means that it decay to half of its size every 4 hours. Therefore there are 6 stages of division in a day.

i.e $\frac{1}{2}$ × $\frac{1}{2}$ × $\frac{1}{2}$ × $\frac{1}{2}$ × $\frac{1}{2}$ × $\frac{1}{2}$ = $\frac{1}{64}$

The amount of the supplement in Niklas' body after the first dose (first day) can be determined by;

= $\frac{1}{64}$ × 25

= 0.390625 micrograms

He used the supplement daily for 12 days (12th dose), but the amount of the supplement in his body immediately after the 12th dose would be;

amount in his body per day × number of period for complete decay

= 0.390625 × 11

= 4.296875

The amount of the supplement in Niklas' body immediately after the 12th dose is 4.30 micrograms. This is because immediately after the 12th dose, the supplement has not reach its half life.

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3 years ago

Ross took a survey of his classmates' preferred food as well as recording their genders. The results are in the table below:

iogann1982 [59]

The answer to your question is 30

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3 years ago

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