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Leno4ka [110]
3 years ago
9

4

Mathematics
1 answer:
rjkz [21]3 years ago
6 0
-2x + 4
(Substitute -3 in the ‘x’ spot)
-2(-3) + 4
6 + 4 = 10

Answer:
10
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You buy rice at 71 cent a pound. One batch of fried rice requires 5 pounds of rice. How much does the rice for one batch cost
DIA [1.3K]

Answer: One batch of Fried rice costs $3.55

Step-by-step explanation: One batch consists of 5 pounds. One pound is 71 cents. We have to multiply 71 by 5. The product of 71 and 5 is equal to 355 cents. One batch of Fried Rice costs 355 cents or $3.55

3 0
3 years ago
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A fair coin is flipped four times . use a tree diagram to find the probability of observing. exactly two heads . enter youe answ
Leni [432]

Answer:

50%

Step-by-step explanation:

So, we divide by another 2! to cancel out double counting of two T's. Finally, if we divide all 6 different ways of getting exactly 2 heads (and 2 tails) in 4 flips by all possible outcomes 2 * 2 * 2 * 2 = 16 we would get the probability of exactly 2 heads in 4 flips.

5 0
3 years ago
A cone with a radius 2 units is shown below. Its volume is 29 cubic units. Find the height of the cone
rusak2 [61]

Answer:

The height of the cone is 6.9\ units

Step-by-step explanation:

we know that

The volume of the cone is equal to

V=\frac{1}{3}Bh

where

B is the area of the circular base of the cone

h is the height of the cone

In this problem we have

V=29\ units^{3}

r=2\ units

<em>Find the area of the base B</em>

B=\pi r^{2}

substitute the value of r

B=\pi (2)^{2}=4 \pi\ units^{2}

<em>Find the height of the cone</em>

29=\frac{1}{3}(4 \pi)h

h=29*3/(4 \pi)

assume \pi=3.14

h=29*3/(4*3.14)=6.9\ units

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Answer:

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Step-by-step explanation:

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I think it is the last one
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