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3 years ago

Solve for x. 3 (2x + 7) = 15 (x - 4)

Mathematics

1 answer:

hjlf3 years ago

5 0

Answer = 9

Explanation :

I hope this helps !!!!

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Margarita [4]

The answer is 2 y-5=-4/3(x-2)

7 0

3 years ago

What is 3.30 divided by -2.00? Show work.

Lana71 [14]

Answer:

Step-by-step explanation:

$\frac{3.3}{-2}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{-b}=-\frac{a}{b}\\=-\frac{3.3}{2}\\\\\mathrm{Divide\:the\:numbers:}\:\\\frac{3.3}{2}=1.65$

7 0

3 years ago

When given points (1,1) and (2,2), what is the slope ?

scoray [572]

Answer:

$m=1$

Step-by-step explanation:

Slope can be calculated using following formula

$m=\frac{y_2-y_1}{x_2-x_1}$ ----------- (1)

<u>Here</u>

$(x_1, y_1)=(1, 1) \ \ and \ \ (x_2, y_2) = (2, 2)$

Substitute values in equation (1)

$m=\frac{2-1}{2-1}$

$m=1$

7 0

3 years ago

The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: M(x) = 13 x - x2. What

My name is Ann [436]

Answer:

The number of mosquitoes is maximum for 6.5 inches rainfall.

Step-by-step explanation:

The given function is

$M(x)=13x-x^2$ .... (1)

where, M(x) is number of mosquitoes in millions and x the June rainfall in inches.

We need to find the rainfall that produces the maximum number of mosquitoes.

Differential the above function with respect to x.

$M'(x)=13-2x$ .... (2)

Equate first derivative equal to 0.

$13-2x=0$

$2x=13$

$x=\frac{13}{2}=6.5$

Differential function (2) with respect to x.

$M''(x)=-2$

Double derivative is negative. So, the value of function is maximum at x=6.5.

Therefore, the number of mosquitoes is maximum for 6.5 inches rainfall.

4 0

3 years ago

Question 5 of 7 -

MatroZZZ [7]

Answer: B and E

Step-by-step explanation:

5 0

3 years ago

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