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anastassius [24]
3 years ago
5

Can u help me figure out this question plz

Mathematics
1 answer:
Dmitry [639]3 years ago
4 0
Rectangle = 9*5=45
Triangle= 1/2 * 10 * 3 = 15
Add the two shapes: 45+15 = 60 sq units
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What is the solution to the system of equations?
alukav5142 [94]

Answer:

  (x, y) = (-4, 15)

Step-by-step explanation:

The two equations have the same coefficient for y, so you can eliminate y by subtracting one equation from the other. Here the x coefficient is largest for the first equation, so it will work best to subtract the second equation.

  (3x +y) -(2x +y) = (3) -(7)

  x = -4 . . . . . . . . simplify

Now, we can find y by substituting this value for x.

  2(-4) +y = 7

  y = 7 +8 = 15 . . . . . add 8 to both sides of the equation

The solution is (x, y) = (-4, 15).

6 0
3 years ago
The value of -9(square root) is not-3 because
love history [14]

Answer:

A)  (-3)^{2} \neq -9

Step-by-step explanation:

7 0
3 years ago
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What is the sign of the product (−4)(2)(−3)(6)?
solong [7]

Answer: negative ; -144 sowwy if im wrong

Step-by-step explanation:

-4, 2, -3 , 6

-4 times -3 = -12

6 times 2 = 12

-12 times 12 = -144

5 0
3 years ago
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HELPPP KE PJEASE. ASAPPPP ITS FOR A QUIZZZ
san4es73 [151]
=(1/2) * 2 * 3.2 + (1/2) *2 * 3.2 + (1/2) * 2 * 4 + (1/2) * 2 * 4
= 2 * 3.2 + 2 * 4
= 2 * (3.2 + 4)
= 2 * 7.2
= 14.4 sq feet
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8 0
3 years ago
Item 10 A bacterial culture quadruples in size every hour. You begin observing the number of bacteria 3 hours after the culture
Vinvika [58]

Answer:

There will be 200 000 bacteria after 8 hours

Step-by-step explanation:

The crop quadruples every hour.

x represents the number of hours that pass after preparing the crop

y represents the number of bacteria after x hours.

The equation for y in function of x  3 hours after observing the crop is:

y = 192(4^{x - 3})

We want to know after how long there will be 200 000 bacteria.

Then we make y = 200 000 and clear x.

200\ 000 = 192(4^{x - 3})\\\\log(200\ 000) = log(192(4^{x-3}))\\\\log(200\ 000) = log(192) + log(4 ^{x-3})\\\\log(200\ 000) - log(192) = (x-3)log(4)\\\\\frac{log(200\ 000) - log(192)}{log(4)} = (x-3)\\\\x = 3 + \frac{log(200\ 000) - log(192)}{log(4)}\\\\x = 8\ hours

5 0
3 years ago
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