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Keith_Richards [23]
3 years ago
5

What expression is equivalent to -5(x)+(-4)(-3)

Mathematics
1 answer:
azamat3 years ago
6 0

Answer:-25+-12

Step-by-step explanation:so I made x value as 5 so I multiplied -5x5 and it's -25 then I multiplied -4x-7 and that's -12 so the equivalent expression for my way is -25+-12

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(02.01)<br> Solve for x: 3x - 5 = 2x + 6. (1 point)<br> a<br> -1<br> d<br> -11
sp2606 [1]

Answer:

Step-by-step explanation:

3x - 5 = 2x + 6

x - 5 = 6

x = 11

8 0
3 years ago
"Polio has a basic reproduction number (R0) = 5. The vaccine is very good; in fact, polio vaccine is 99% effective when two foll
yulyashka [42]

Answer:

0.81

Step-by-step explanation:

Herd immunity or community immunity is the immunity seen after vaccination of a population wherein the large portion of the population becomes immune to the pathogen. It depends on vaccine efficacy and vaccination rate.

The reproduction number R_o is a factor indicating the number of people that can be infected by the person with the disease. If Ro=5 then one infected person can infect 5 people with Polio virus.

V_c= q_c/E

V_c= Vaccine coverage

q_c= herd immunity threshold

E= Vaccine efficacy= 99%=0.99

q_c=1-1/R_o= 1-1/5=0.8

V_c= q_c/E

V_c= 0.8/0.99= 0.808= 0.81

Thus, 81% coverage or vaccination for Polio is required to stop spread of Polio in the population.

5 0
3 years ago
Suppose you select a letter at random from the word MISSISSIPPI.The probability of selecting the letter M is? The probability of
jonny [76]

Answer:

M=9%, P=18.1%

Step-by-step explanation:

7 0
3 years ago
A car factory can build 14 cars in 4 hours. <br><br> How many cars can it build in 7 hours?
inessss [21]
You can do rate. 14 divided by 4 equals 3.5. A car factory can build one car in 3.5 hours. 3.5 multiply by 7 equals 24.5. 
3 0
4 years ago
In the diagram, AD = 5, BD = 4, and the area of triangle ACD is 15. Find the area of triangle ABC.​
Archy [21]

Answer:

√20 =4.47

Area =4.47*4.5

Area =20 unit ^2

6 0
2 years ago
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