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Alenkinab [10]
3 years ago
15

The expression 21 - (2x + 3)2 + 4 (1 - 1) + z3 can be simplified into the form

Mathematics
1 answer:
mr Goodwill [35]3 years ago
5 0

Answer:

A=z

B=-2

C=0

D=30

Step-by-step explanation:

First lets simply the equation

21 - (2x +3)2 + 4(1-1) + z^3

21 - (2x^2 + 9) + 4(0) + z ^3

21 - 2x^2 + 9 + z^3

- 2x^2 + z ^3 + 30

This means that:

A=z

B=-2

C=0

D=30

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Theresa is 14 years younger than her brother Jonathan. Together, their total age in years is 35. A) How many years old is Theres
ikadub [295]

A) The age of Theresa is 10 years 6 months old

B) Jonathan age is 24 years and 6 months old

<u>Solution:</u>

Given, Theresa is 14 years younger than her brother Jonathan.  

Let the age of Theresa be "n" years

Then the age of Jonathan will be "n + 14" years

Together, their total age in years is 35

<em><u>A) Finding age of Theresa:</u></em>

Jonathan age + Theresa age = 35  

n + 14 + n = 35  

2n + 14 = 35  

2n = 35 - 14  

2n = 21  

n = 10.5

So, age of Theresa is 10 years 6 months  

<em><u>B) Finding age of Jonathan</u></em>

Now, we know that n = 10.5  

Then Jonathan age = n + 14 = 10.5 + 14 = 24.5 years

So, Jonathan is 24 years and 6 months old

4 0
3 years ago
You have $35 to spend on candy and soda is $0.75 each. Assume x represents the amount of candy and y is the amount of sodas purc
sukhopar [10]
<h3>Answer:</h3>

x + 0.75y = ≤ 35

<h3>Explanation:</h3>

The amount of candy purchased, plus the amount of soda purchased times the amount per soda must be less than or equal to 35.

<em>I hope this helps, let me know if it's wrong though.</em>

7 0
3 years ago
F(x)=1/3x4x^ <br> How do I find F(4)
djverab [1.8K]
Assuming yo meant
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sub 4 for x
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Answer:

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Step-by-step explanation:

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Answer:

1. A  2. C


Step-by-step explanation:

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