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V125BC [204]
3 years ago
13

Factorise 4x squared + 27 - 7

Mathematics
1 answer:
Olenka [21]3 years ago
7 0
STEP-BY-STEP SOLUTION:

= 4x^2 + 27 - 7

= 4x^2 + 20

= 4 ( x^2 + 5 )

Please mark as brainliest if you found this helpful! :)
Thank you <3
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The results of a swim meet are shown. Who swam the fastest? Explain your reasoning.
kobusy [5.1K]

Answer : The Susana swam the fastest.

Step-by-step explanation :

Speed : It is defined as the distance traveled per unit time.

Formula used :

Speed=\frac{Distance}{Time}

First we have to determine speed of the following persons.

<u>For Tawni :</u>

Distance = 50 m

Time = 40.8 s

Speed=\frac{Distance}{Time}=\frac{50m}{40.8s}=1.225m/s

The speed of Tawni is, 1.225 m/s

<u>For Pepita :</u>

Distance = 100 m

Time = 60.2 s

Speed=\frac{Distance}{Time}=\frac{100m}{60.2s}=1.661m/s

The speed of Pepita is, 1.661 m/s

<u>For Susana :</u>

Distance = 200 m

Time = 112.4 s

Speed=\frac{Distance}{Time}=\frac{200m}{112.4s}=1.779m/s

The speed of Susana is, 1.779 m/s

From this we conclude that, in this problem meter affects the response and the speed of Susana is more than the Pepita and Tawani.

Thus, Susana swam the fastest.

6 0
3 years ago
The circumference of a circle is 32π. What is the diameter of this circle?
lawyer [7]
C = 2 (pi) r 

32 (pi) = c

32 (pi)= 2 (pi) r 

r= 16 

2r = d 
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hope that helps
4 0
3 years ago
Can u help me with this
Tanzania [10]
1. x^2 + x - 90

2. (x+10)(x-1)

3. x= -10 and 1
4 0
3 years ago
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8 0
3 years ago
Estimate the amount of the tip by rounding the bill to the nearest dollar before calculating.
telo118 [61]

Answer:

$16

Step-by-step explanation:

Round : $80.36 : $80

Equation : 20% of 80

Answer : $16

Sidenote: I hope this answers your questions!

6 0
2 years ago
Read 2 more answers
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