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san4es73 [151]
3 years ago
6

Which proportion resulted in the equation 3a=7b

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
7 0

Answer:

3/5 7/a

Step-by-step explanation:

the guy above has small brain

allsm [11]3 years ago
4 0

Answer: 3a+7b?

hope im correct

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Suppose that AB and EF are corresponding sides of similar triangles. If AB=2 and the scale factor is 5, what is EF?
Zina [86]

Answer:

EF=10

Step-by-step explanation:

If they are corresponding,

AB = 2 x Scale factor of 5 = 10

8 0
3 years ago
he volume of a gas varies inversely as the pressure upon it. The volume of a gas is 1600 cm3 under a pressure of 4 kg/2. What wi
Vladimir [108]

<u>Answer</u>

320 cm³


<u>Explanation</u>

Firstly, find the constant of proportionality.

V ∝ 1/p

V = k/p   Where V= volume, k = constant and p = pressure of the gas.

1600 = k/4

k = 1600 × 4

   = 6,400

The equation will be,

V = 6,400/p

For p =20 Kg/cm²,

V = 6,400/20

   = 320 cm³


8 0
3 years ago
(7 + 7i)(2 − 2i)
Ostrovityanka [42]

The complex number  -7i into trigonometric form is 7 (cos (90) + sin (90) i) and  3 + 3i in trigonometric form is 4.2426 (cos (45) + sin (45) i)

<h3>What is a complex number?</h3>

It is defined as the number which can be written as x+iy where x is the real number or real part of the complex number and y is the imaginary part of the complex number and i is the iota which is nothing but a square root of -1.

We have a complex number shown in the picture:

-7i(3 + 3i)

= -7i

In trigonometric form:

z = 7 (cos (90) + sin (90) i)

= 3 + 3i

z = 4.2426 (cos (45) + sin (45) i)

\rm 7\:\left(cos\:\left(90\right)\:+\:sin\:\left(90\right)\:i\right)4.2426\:\left(cos\:\left(45\right)\:+\:sin\:\left(45\right)\:i\right)

\rm =7\left(\cos \left(\dfrac{\pi }{2}\right)+\sin \left(\dfrac{\pi }{2}\right)i\right)\cdot \:4.2426\left(\cos \left(\dfrac{\pi }{4}\right)+\sin \left(\dfrac{\pi }{4}\right)i\right)

\rm 7\cdot \dfrac{21213}{5000}e^{i\dfrac{\pi }{2}}e^{i\dfrac{\pi }{4}}

\rm =\dfrac{148491\left(-1\right)^{\dfrac{3}{4}}}{5000}

=21-21i

After converting into the exponential form:

\rm =\dfrac{148491\left(-1\right)^{\dfrac{3}{4}}}{5000}

From part (b) and part (c) both results are the same.

Thus, the complex number  -7i into trigonometric form is 7 (cos (90) + sin (90) i) and  3 + 3i in trigonometric form is 4.2426 (cos (45) + sin (45) i)

Learn more about the complex number here:

brainly.com/question/10251853

#SPJ1

3 0
2 years ago
(5^3)^1<br> Find the value, and Write the answer without exponents
beks73 [17]

Answer:

125

Step-by-step explanation:

u do 5 to the power of 3 then to the power of 1. yw.

7 0
3 years ago
−sin^2 θ+cos^2 θ=sinθ+1
Brut [27]
Drjbvfdlkx dvdgshskslslslavf
8 0
3 years ago
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