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2 years ago

Find the value of 3a^2+2b, If a=3 and b = 4.An explanation would be great.

Mathematics

2 answers:

vichka [17]2 years ago

8 0

Answer:

=35

Step-by-step explanation:

3(3) ^2 + 2(4)

= 3(9) + 8

= 35

Where you see a, substitute with 3 and where you see b, substitute with 4

Just follow the steps above.

QveST [7]2 years ago

5 0

$\\ \sf\Rrightarrow 3a^2+2b$

$\\ \sf\Rrightarrow 3(3)^2+2(4)$

$\\ \sf\Rrightarrow 3(9)+8$

$\\ \sf\Rrightarrow 27+8$

$\\ \sf\Rrightarrow 35$

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PLEASE HELP

Virty [35]

<u>Answer-</u>

$\boxed{\boxed{\dfrac{\widehat{BC}}{\widehat{DE}}=\dfrac{3}{4}}}$

<u>Solution-</u>

We know that arc length is the product of radius and central angle in radian.

i.e $\text{Arc length}=\text{Radius}\times \text{Central angle}$

Here,

$\theta_{BC}=1.18\ rad,\ \theta_{DE}=2.36\ rad\\\\AD=\dfrac{2}{3}AB\Rightarrow AB=\dfrac{3}{2}AD$

So,

$\dfrac{\widehat{BC}}{\widehat{DE}}=\dfrac{AB\times 1.18}{AD\times 2.36}$

$=\dfrac{\frac{3}{2}AD\times 1.18}{AD\times 2.36}$

$=\dfrac{3\times 1}{2\times 2}$

$=\dfrac{3}{4}$

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3 years ago

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Verdich [7]

Answer:

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4 0

2 years ago

Please help me !!!!!!!!!

lidiya [134]

Answer:

f(-2) = 0

f(1) = 12

f(2) = 5

Step-by-step explanation:

f(-2) will lie in the function $f(x) =x^2 - 4$

$\therefore f( - 2) = {( - 2)}^{2} - 4 = 4 - 4 = 0$

f(1) will lie in the function $f(x) =2x^2 +10$

$\therefore f(1) = 2 {(1)}^{2} + 10 = 2 + 10 = 12$

f(2) will lie in the function $f(x) =5$

$\therefore f(2) = 5$

5 0

3 years ago

Solve for x: - 4 + x > 5

Rufina [12.5K]

Answer:

x>9 this is the correct answer

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3 years ago

Simplify -(-2a + 13) + (-9a - 2) - (-7a - 3)

nadya68 [22]

-12 hope it helps :)

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3 years ago

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