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3 years ago

Please help! I will give fifty points and brainiest if you answer and get it right.

Mathematics

2 answers:

EastWind [94]3 years ago

8 0

Answer: The tourist was in the taxi for 23 miles.

Step-by-step explanation:

atroni [7]3 years ago

6 0

Step-by-step explanation:

speed =4 miles/hour

distance travelled =31 miles

we have

speed =distance/time

time =31/4hour

for taxi

time =2hours

speed =50mph

distance covered by taxi =?

we have

speed =distance /time

50=distance/2

distance =50×2=100miles

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The ratio of men to women enrolled in Math for Elementary Teachers at Indiana University Purdue University Indianapolis is 1 to

Alekssandra [29.7K]

Answer:

31 men are enrolled

Step-by-step explanation:

1 to 5

Divide 186 by 6. Then you would get 31 since that is the unit rate.

To check, multiply 31 by 5 and you would get 155, add 155 with 31, you would get 186. I don't really know how to explain it but thats my answer.

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3 years ago

A human brain weighs about 1 kg and contains about 1011 cells. Assuming that each cell is completely filled with water (density

elena-s [515]

Answer:

Step-by-step explanation:

From the information given:

a human brain weighs = 1 kg ; = 1000 grams

Number of cells = 10¹¹ cells

The density of water filled in each cell = 1 g/mL

From above;

the weight of each of the brain cell = total weight of the human brain/the number of cells

the weight of each of the brain cell = 1000/10¹¹

the weight of each of the brain cell = 1 × 10⁻⁸ grams

Now, to calculate the quantity of water in each cell; we have:

= the weight of each brain × density

= $1 \times 10^{-8} \ g \times \dfrac{1 \ mL}{1 \ g}= 1 \times 10^{-8} \ mL$

For cube; we know that

1 mL = 1 cm³

Thus:

$1 \times 10^{-8} \ mL= 1 \times 10^{-8} \ cm^3$

Recall that; the volume of a cube as well = $x^3$

where;

x = length of each sides

∴

$x^3$ = $1 \times 10^{-8} \ cm^3$

$x = \sqrt[3]{1 \times 10^{-8}}$

x = 0.0022 cm

Thus, the length of each side of the cell = 0.0022 cm

The surface area of a single cell = x²

The surface area of a single cell = (0.0022 cm)²

The surface area of a single cell = 4.84 × 10⁻⁶ cm²

Therefore, the total surface area of is:

$1 \times 10^{11} \ cells \times \dfrac{4.84 * 10^{-6} \ cm^2}{1 \ cell}$

= $4.84 \times 10^5 cm^2$

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4 years ago

12. You have $10 to spend on charms and stickers. The equation

ANEK [815]

Answer:

Step-by-step explanation:

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2 years ago

Read 2 more answers

Find the are of the segment

Alex777 [14]

Answer:

$(9\pi - 18)cm^2$

Step-by-step explanation:

To find the area of this section of the triangle, we will have to find the area of the sector, and then subtract the area of the triangle. To first find the area of the sector of the circle. Remember that the sector of a circle can be found using a proportion of angles. Since there is an angle of 90 degrees in the center. We will take that and divide it by 360 degrees, which is an entire circle. $\frac{90}{360} = \frac{1}{4}$ , so the sector is one-quarter of the entire circle. Now find the area of the entire circle which will be $\pi r^{2}$ × $\frac{1}{4}$ , where r is 6 since it is the radius of the circle. So therefore the area of the sectore will be a quarter of 36 $\pi$ , which is 9 $\pi$ .

Now you must find the area of the triangle with side length 6. Remember, this is an isosceles triangle with sides length of 6 because two of the sides are radii. Also, remember that this is a 90 degree triangle, so the area of the triangle is simply $\frac{6*6}{2}$ , which is 18 cm^2.

Now to find the area of just the yellow segment, just take the area of the sector we found, and subtract the area of the triangle. Therefore, the answer is $(9\pi - 18)cm^2$

Hope this helped.

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3 years ago

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vovikov84 [41]

Answer:

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Step-by-step explanation:

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3 years ago