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jonny [76]
3 years ago
13

Hi!! I need some help with those exercises can anybody help me please !! Thanks you

Mathematics
1 answer:
elena55 [62]3 years ago
6 0

Answer:

Step-by-step explanation:

(a+b)^2=a^(2)+2ab+b^(2)

(a-b)^2=a^(2)-2ab+b^(2)

13)

(x+2)^(2)-(x-1)^2

x^(2)+4x+4-(x^(2)-2x+1)

x^(2)+4x+4-x^(2)+2x-1

6x+3

15)

(x+5)^(2)-(x+1)^2

x^(2)+10x+25-(x^(2)+2x+1)

x^(2)+10x+25-x^(2)-2x-1

8x+24

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Vishal's phone plan costs $45.37 per month plus $0.60 per text message. How many text messages can he send and keep his monthly
Liono4ka [1.6K]

Answer:

56 messages.

Step-by-step explanation:

So, from the $79 you subtract $45.37, which results in $33.63. That is the amount he has left for the text messages. So, you divide $33.63 by 0.60c, which results in 56.05. However, you cannot have a .05 of a text message, so it rounds to 56 messages.

Hope I helped!!

8 0
3 years ago
I dont know how to do this
Blababa [14]

Answer:

<h2>Option C = 78,125</h2>

Step-by-step explanation:

First prime factorize 135,

135 = 5×3×3×3

Now prime factorize 128,

128=2×2×2×2×2×2×2 = 2^7

the highest prime factor of 135 is 5,

Let 5 be x

the highest power of the lowest prime factor of 128 which is the power 2 is 7

Let 7 be y

According to the question x^y = 5^7

<h3>= 78,125</h3>

4 0
2 years ago
What is the slope of the equation that is represented by the table below?
yuradex [85]

Answer:A

Step-by-step explanation:

You use the equation:

m= (y2-y1) ÷ ( x2-x1)

m= (12-9) ÷ (2-1)

m= 3÷1

m= 3

3 0
4 years ago
Read 2 more answers
Alex wants to share 3 L of orange juice
vovangra [49]

Answer:

6 people including alex

Step-by-step explanation:

1 liter = 1000 ML

3 X 1000 = 3000 ML

3000/500=6 glasses of 500 ml

:))

6 0
2 years ago
Read 2 more answers
6. The temperature of an iron block decreases from 85°C to 25°C. If the mass for
Fittoniya [83]

Answer:

8280 cal

Step-by-step explanation:

Q=mc(delta)T

Q=1200(0.115)(-60)

Q=8280 cal

I used 1200 g instead of 1.2 kg

4 0
3 years ago
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