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Burka [1]
3 years ago
8

If the average speed of a car is 45 km/hr, how far can it travel in 40 min?

Mathematics
1 answer:
alexandr1967 [171]3 years ago
3 0

Answer:

30 kilometers

Step-by-step explanation:

40 min=2/3 hour

2/3*45=30

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ser-zykov [4K]

Answer:

Step-by-step explanation:

y_{1} = - 4 - 2( - 3) = 2

y_{2} = - 4 - 2( - 2) = 0

y_{3} = - 4 - 2( - 1) = - 2

y_{4} = - 4 - 2( 0 ) = - 4

y_{5} = - 4 - 2( 1 ) = - 6

Range: { 2, 0, - 2, - 4, - 6 }

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You said you’d give 30 points but i only see 15 there ☹️
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2 years ago
How would you solve this problem?
klio [65]

Answer:

a) 6x²/2x³-4

b)  2ln (2x^3-4)+ C

Step-by-step explanation:

a) Given the ln(2x³-4). We will use the chain rule in differentiating the function

If y = ln(2x³-4);

u = 2x³-4; du/dx = 3(2)x³⁻¹

du/dx = 6x²

y = ln u; dy/du = 1/u

According to chain rule, dy/dx = dy/dy*du/dx

dy/dx = 1/u * 6x²

dy/dx = 1/2x³-4 * 6x²

dy/dx = 6x²/2x³-4

Hence, the derivative of the given function is 6x²/2x³-4

b) Given an integral function \int\limits {\frac{12x^2}{2x^3-4} } \, dx, the integral problem can be solved using integration by substitution method as shown below;

From the question, let y = 2x³-4... 1, dy/dx = 6x²

dx = dy/6x² ... 2

Substituting equation 1 and 2 into the question given;

\int\limits {\frac{12x^2}{y} } \,\frac{dy}{6x^2} \\\\= \int\limits {\frac{2dy}{y} } \\\\= 2 \int\limits {\frac{dy}{y} }\\\\= 2lny + C\\substituting\ y = 2x^3-4\ into\ the \ resulting\ function\\\\= 2ln (2x^3-4)+ C

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3 years ago
Name the line and plane shown in the diagram.
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D. Line PQ and Plane PQS
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3 years ago
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I’ll give brainley , pleaseee helppp
Sveta_85 [38]

Answer:

Vertical Stretch & horizontal translation

Step-by-step explanation:

the vertical stretch makes the line bigger

Horizontal translation will move the shape 2 left of the x axis

4 0
2 years ago
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