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3 years ago

NEED UR HELPPPP PLEASE..

Mathematics

2 answers:

Mashcka [7]3 years ago

8 0

17.32 deal with it aaaaaaaaaaaaaaaaa

Anestetic [448]3 years ago

5 0

If ∠A =30° and ∠B = 90°, than ∠C = 60°

sin C = AB/AC → sin 60° = 15/x OR sin 60<span>° =</span>√3/2, then:√3/2 = 15/x
and x = (2*15)/√3 → x =17.32 units

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The temperature at a point (x, y, z) is given by T(x, y, z) = 300e−x2 − 3y2 − 7z2 where T is measured in °C and x, y, z in meter

Elenna [48]

Answer:

Rate of change $24^{\circ}$ C per meter.

Step-by-step explanation:

Given,

$T(x,y,z)=300e-x_{2}-3y_{2}-7z_{2}$

Then,

$T_{x_2}=-1, T_{y_2}=-3, T_{z_2}=-7$

Change of temperature at the point say, $(x,y,z)=(2,-1,3)$ along the direction say, $(u,v,w)=(6,-4,6)$ is,

$\Big[uT_{x_2}+vT_{y_2}+wT_{z_2}\Big]_{(x,y,z)}$

$=(6\times -1)+((-4)\times (-3))+(3\times 6)$

= $24$

Hence the rate of change of temperature is $24^{\circ}$ C per meter.

3 0

3 years ago

In what ways was the introduction of imaginary numbers similar to the introduction of negative numbers and the introduction of i

raketka [301]

The introduction of imaginary numbers similar to the introduction of negative numbers through the determination of square root of a negative number.

<h3>Imaginary numbers </h3>

Complex numbers are square root of a negative number. Since a square root of a negative number cannot be determined, it is always represented with "i"

Given the rational number √-4 for instance, this will result in complex number or imaginary number since it is a negative number.

Learn more on imaginary number here: brainly.com/question/10662770

7 0

2 years ago

Christian has a cookie recipe that yields four dozen cookies and calls for 2 1/4 cups white sugar and 3/4 cup brown sugar.cif ch

Paha777 [63]

The ingredients given are for 4 dozen cookies; however, Christian only want to make one dozen, meaning he requires only 1/4 the ingredients.

1/4 of 2 1/4 cups of while sugar is found the following way.

First, we write 2 1/4 as an improper fraction

$2\frac{1}{4}=2+\frac{1}{4}=\frac{9}{4}$

1/4 of this is

$\frac{9}{4}\times\frac{1}{4}=\frac{9}{16}$

Hence, Christian requires 9/16 cups of white sugar.

Similarly, the 1/4 of 3/4 cups of brown sugar is

$\frac{1}{4}\times\frac{3}{4}=\frac{3}{16}$

Hence, Chrisitan requires 3/16 cups of brown sugar.

Therefore, the total cups of sugar required is the sum of

$\frac{3}{16}+\frac{9}{16}=\frac{12}{16}=\frac{3}{4}$

3/4 cups of sugar.

7 0

1 year ago

Evaluate the expression <br> [6+9 x (4-2)] ÷ 4+2

Sedaia [141]

Answer:

Step-by-step explanation:

4-2=2

2x9=18

18+6=24

24/4=6

6+2=8

3 0

3 years ago

Read 2 more answers

A local hamburger shop sold a combined total of 488 hamburgers and cheeseburgers on Friday. There were 62 fewer cheeseburgers so

Andrej [43]

9514 1404 393

Answer:

275

Step-by-step explanation:

Let h represent the number of hamburgers sold. Then the number of cheeseburgers sold is h-62, and the combined total is ...

hamburgers + cheeseburgers = combined total

h + (h -62) = 488

2h = 550 . . . . . . . . add 62, collect terms

h = 275 . . . . . . . . . .divide by 2

275 hamburgers were sold on Friday.

6 0

2 years ago