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DIA [1.3K]
3 years ago
8

Please help me please

Mathematics
2 answers:
pashok25 [27]3 years ago
7 0
{3a}^{2} + 4(2b + c)

When a = 2, b = 3 and c = 5,

3( {2}^{2} ) + 4(2(3) + 5) = 56

Hope this helps :)
jeka57 [31]3 years ago
6 0

Answer:

56

Step-by-step explanation:

3 * 2 * 2 = 12

4[(2*3) + 5] = 4(6+5) = 4(11) = 44

12+44 = 56

Hope this helps! Have a great day!

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What is the equation of the line that passes through the point(−7,−1) and has a slope of 1?
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Answer:

y=x+6

Step-by-step explanation:

Put (-7,-1) into

y-y1=m(x-x1) form, and m=1 (the slope)

y+1=1(x+7)

y+1=x+7

y=x+6

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Write an expression to find the greatest difference:​
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4 0
2 years ago
If x=7+root 40 ,find the value of root x+1by the root of x​
Luda [366]

Chapter : Algebra

Study : Math in Junior high school

x = 7 + √40

find √x of √x + 1

= √x + 1

= √(7+√40) + 1

in Formula is :

= √7+√40 = √x + √y

= (√7+√40)² = (√x + √y)²

= 7+√40 = x + 2√xy + y

= 7 + √40 = x + y + 2√xy

→ 7 = x + y → y = 7 - x ... Equation 1

→ √40 = 2√xy → √40 = 2.2√10 = 4√10

= xy = 10 ... Equation 2

substitution Equation 1 to 2 :

= xy = 10

= x(7-x) = 10

= 7x - x² = 10

= x² - 7x + 10 = 0

= (x - 5)(x - 2) = 0

= x = 5 or x = 2

Subsitution x = 5 and x = 2, to equation 1

#For x = 5

= y = 7 - x

= y = 7 - (5)

= y = 2

#For x = 2

= y = 7 - x

= y = 7 - (2)

= y = 5

and his x and y was find :

#Equation 1 :

= x = 5 and y = 2

#Equation 2 :

= x = 2 and y = 5

So that :

√7+√40 = √x + √y

= √7+√40 = √2 + √5

And that is answer of question :

= √2 + √5 + 1

3 0
3 years ago
Please help me, thank you
Pavel [41]

Answer:

the answer is -3. Your welcome

4 0
3 years ago
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