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Rom4ik [11]
3 years ago
12

What does 7(p + q +9) equal​

Mathematics
1 answer:
Montano1993 [528]3 years ago
5 0
Answer:
7p+7q+63

Step by step:
Distribute 7 to p, q and 9
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Simplify.
dimaraw [331]
Answer is (D). -6-7x. Or to play with it a lil bit -7x-6. The numbers and coefficients and signs are all correct doesn’t matter how you form them unless “they” disagree with it
8 0
3 years ago
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A car travels at a constant velocity of 84 km/hr. How far would the car travel in 20 minutes?
Rama09 [41]

d=vt

d=84 km/hr x 2/6 hr

d = 28 km

3 0
2 years ago
HELP ASAP!<br>Find the equation of the line.<br>Use exact numbers.<br>y=___x+___​
snow_tiger [21]

Answer:

y = 3/4x-2

Step-by-step explanation:

5 0
3 years ago
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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

3 0
3 years ago
Here are the heights in inches of 10 professional basketball players: 66,74,76,77,78,79,80,80,82,84. The means of these heights
Lesechka [4]

Answer:

heights are:

66, 74, 76, 77, 78, 79, 80, 80, 82, 84

The mean is: 77.6 inches

Step-by-step explanation:

removing 66 will make the mean increase to 78.9  

The set has 66 as an outlier and removing it increases the mean by about 1.3 inches.

7 0
3 years ago
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