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ludmilkaskok [199]
4 years ago
11

Write the product in standard form.(2 - 3i)(2 + i)​

Mathematics
2 answers:
Stels [109]4 years ago
8 0

Answer:

Brainelist?

Step-by-step explanation:

7-4i

just use a online calculator

Nata [24]4 years ago
8 0

Answer:

7-4i

Step-by-step explanation:

(2 - 3i)(2 + i)​

FOIL

first 2*2 = 4

Outer: 2i

Inner: -3i*2 = -6i

Last: -3i*i = -3i^2 = -3(-1) = 3

Add them together

4+2i-6i+3

7-4i

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if 3/4 of a cup of water fills 2/3 of a plastic container, how many containers can you fill with one cup of water?​
Luda [366]

Answer:

1 cup of water will fill = \frac{8}{9} of the plastic container.

Step-by-step explanation:

Given :

\frac{3}{4} of a cup of water fills \frac{2}{3} of a plastic container.

To find number of containers that can be filled with 1 cup of water, we will use unitary method.

if \frac{3}{4} of a cup of water fills \frac{2}{3} of a plastic container.

Then 1 cup of water will fill = \frac{2}{3}\div \frac{3}{4} of a container.

Dividing fractions.

\frac{2}{3}\div \frac{3}{4}

Replacing division with multiplication by taking reciprocal of the divisor.

\frac{2}{3}\times \frac{4}{3}

Multiplying the numerators and denominators.

\frac{2\times4}{3\times3}

\frac{8}{9}

∴ 1 cup of water will fill = \frac{8}{9} of the plastic container.

5 0
3 years ago
Please help me I really need help
Fofino [41]

Answer:

A, C

Step-by-step explanation:

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

the ∠A is adjacent (adj) to  AB and opposite (Opp) of BC and AB is the hypotenuse (Hyp) of the triangle

which one of the above trig functions fits that?

sin(Ф) = BC / AC   is sin(Ф)= Opp / Hyp , so choice A) works

cos(Ф) = BC / AC  is not cos(Ф) = Opp / Hyp  so choice B) does not work

cos(Ф) = BA / AC  is cos(Ф) = Adj / Hyp  so choice C)  works

AC / BC is just a ratio   it's not the angle , so D) doesn't work

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3 years ago
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KatRina [158]

Answer:

Formula for the volume of a rectangular prism:

V = length x width x height

To solve, substitute the dimensions given in the problem and multiply.

6 0
4 years ago
Someone should help me ???
andrezito [222]

The triangles are equal because they follow AAS congruency fact.

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Hi Mack17 the answer is 9 minutes

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3 years ago
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