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2 years ago

(2+4i) + (9+10i) = (2+9) + (4i+10i)

Mathematics

1 answer:

HACTEHA [7]2 years ago

5 0

11+14i=11+14

The answer is 0

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Which expression is equivalent to<br> 32x8, 10?

diamong [38]

Answer:

480

Step-by-step explanation:

8x4=32

8x8=64

32x4=128

32x8=256

256+128+64+32=480

5 0

2 years ago

Which transformations will produce similar, but not congruent, figures?

n200080 [17]

A, because anything with a dilation will not be congruent as the original PQR :))

7 0

3 years ago

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Un cono ha l'area laterale di 255 pigreco cm^2, l'apotema di 17 cm e pesa 900 pigreco g. Calcola il peso specifico del materiale

valkas [14]

Answer:

The specific weight is $1.5\frac{g}{cm^{3}}$

Step-by-step explanation:

The question in English

A cone has a lateral area of 255 pi cm^2, an apothem of 17 cm and weighs 900 pi g. It calculates the specific weight of the material of which it is composed

step 1

Find the radius of the cone

we know that

The lateral area of a cone is equal to

$LA=\pi rl$

we have

$LA=255\pi\ cm^{2}$

$l=17\ cm$

substitute the values

$255\pi=\pi r(17)$

Simplify

$255=r(17)$

$r=255/(17)=15\ cm$

step 2

Find the height of the cone

Applying the Pythagoras Theorem

$l^{2} =r^{2} +h^{2}$

substitute the values and solve for h

$17^{2} =15^{2} +h^{2}$

$h^{2}=17^{2}-15^{2}$

$h^{2}=64$

$h=8\ cm$

step 3

Find the volume of the cone

The volume of the cone is equal to

$V=\frac{1}{3}\pi r^{2}h$

substitute the values

$V=\frac{1}{3}\pi (15)^{2}(8)$

$V=600\pi\ cm^{3}$

step 4

Find the specific weight

Divide the mass by the volume

$\frac{900\pi }{600\pi}=1.5\frac{g}{cm^{3}}$

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3 years ago

Eric has 7 red shirts and 11 black shirts what is the ratio of red and black shirts.

olya-2409 [2.1K]

Answer:

7:11

Step-by-step explanation:

Hope this helps! God bless.

7 0

3 years ago

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X/4=-5/20<br> Algebra<br> Solve for x

Ivahew [28]

Answer:

Algebra =

X/4 = -5/20

Simplify :

X/4 = -1/4

Of course, Will same x/4 = -1/4

<h3>Answer : X = -1</h3>

8 0

2 years ago

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