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KiRa [710]
3 years ago
11

If x = 5, find the value of a) x2 b) (x + 3)2

Mathematics
1 answer:
PtichkaEL [24]3 years ago
3 0

Answer: a) = 10

b) = 16

Step-by-step explanation:

a) as x = 5 so putting the value of x in given equation

5 multiplied by 2 is equal to 10

b) Putting value of x in given equation

= (5 + 3) 2

According to BODMAS solve the brackets first

= 8 x 2

= 16

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What is 2 2/20 • 2 2/7 and 2 1/3 • 2 2/7 simplify?
Delicious77 [7]

Answer:

22/20=11=10

22/7 =22/7

21/3=7

22/7=22/7

4 0
3 years ago
A cylinder shaped storage tank has a radius of (x+5) metres and a height of x metres. Determine the dimensions (round to two dec
givi [52]

Answer:

Radius = 6.46 meters

Height = 1.46 meters

Step-by-step explanation:

The volume of a cylinder = πr²h

In the above question, we were given

r = (x + 5) meters

h = x meters

Volume = 192 cubic meters

Hence,

192 = π × (x + 5)² × x

192 = π × (x² + 10x + 25) × x

192 = π × (x³ + 10x² + 25x)

Divide both sides by π

192/π = x³ + 10x² + 25x

61.115498147 = x³ + 10x² + 25x

x³ + 10x² + 25x - 61.12

This Quadratic equation is a polynomial

x = 1.46119

From the above:

Radius = (x + 5)meters

Radius = 1.46119 + 5 = 6.46119 meters

Approximately to 2 decimal places = 6.46 meters

Height = x meters

Height = 1.46119 meters

Approximately to 2 decimal places = 1.46 meters

6 0
3 years ago
A line has a slope of zero. Which of the following points could this line pass through?
IrinaK [193]

Answer:

c or d i think

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
The graph of a function f(x) is shown below: plot ordered pairs negative 1, negative 3 and 0, 1 and 1, 2.2 and 2, 3
JulijaS [17]

we have the points

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Using a graphing tool

see the attached figure  

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-1 \leq x\leq 2      

the range is the interval--------> [-3,3]

-3 \leq y\leq 3  

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integers from  -1 \leq x\leq 2  

6 0
3 years ago
How do u graph x=68 in an inequality
worty [1.4K]
You use x ≤ 68 or x ≥68
7 0
3 years ago
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