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ehidna [41]
3 years ago
14

Which of the following is equivalent to the expression below? 7(3+4i)

Mathematics
1 answer:
vodomira [7]3 years ago
3 0

7(3+4i) is equivalent to 21+28i

Option D is correct option

Step-by-step explanation:

We need to find the equivalent to the given expression:

7(3+4i)

To solve the expression multiply 7 with the terms inside the bracket

7(3+4i)\\=7(3)+7(4i)\\=21+28i

So, 7(3+4i) is equivalent to 21+28i

Option D is correct option

Learn more about complex numbers at:

brainly.com/question/10736268

brainly.com/question/4678474

Keywords: Complex Numbers

#learnwithBrainly

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a bowl of grapes has a total massif 265 grams. the bowl has a mass of 121 grams. what is the mass of the grapes
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144 grams

Step-by-step explanation:

the total mass of the bowl of grapes includes the bowl. to get the mass of the grapes, we need to subtract the mass of the bowl. 265 grams - 121 grams is 144 grams.

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the larger room is twice as long as the smaller room. how long is the larger room. small room is 20 4/5 feet​
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What is a real world example of rate of change
Tatiana [17]

Answer:

Step-by-step explanation:

A population of rats increasing by 40 rats per week. A car traveling 68 miles per hour  

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3 years ago
Given that y is directly proportional to x^2 and that y=2 when x=3 find the value of y when x=6
Sergio039 [100]

Answer:y=4/3

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y \alpha  {x}^{2} introducing a constant,

y=kx^2

but from the question, when y=2 , x=3 . putting it in the formula to get the value of k

2 =  {3}^{2}  \times k

2=9k . <em>divi</em><em>ding</em><em> </em><em>throu</em><em>gh</em><em> </em><em>by</em><em> </em><em>9</em><em> </em><em>to</em><em> </em><em>get</em><em> </em><em>the</em><em> </em><em>valu</em><em>e</em><em> </em><em>of</em><em> </em><em>k</em>

<em>\frac{2}{9}  =  \frac{9k}{9}</em>

<em>k =  \frac{2}{9}</em>

<em>pu</em><em>tting</em><em> </em><em>it</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>ge</em><em>neral</em><em> </em><em>expres</em><em>sion</em>

<em>y =  \frac{2}{9} x</em>

<em>the</em><em> </em><em>valu</em><em>e</em><em> </em><em>of</em><em> </em><em>y</em><em> </em><em>whe</em><em>n</em><em> </em><em>x</em><em>=</em><em>6</em>

<em>y =  \frac{2}{9}  \times 6</em>

<em>y =  \frac{4}{3}</em>

<em>there</em><em>fore</em><em> </em><em>the</em><em> </em><em>valu</em><em>e</em><em> </em><em>of</em><em> </em><em>y</em><em> </em><em>when</em><em> </em><em>x</em><em>=</em><em>6</em><em> </em><em>is</em>

<em>4</em><em>/</em><em>3</em>

3 0
3 years ago
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