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Ainat [17]
2 years ago
10

What is the result when the number 40 is decreased by 10%?

Mathematics
1 answer:
choli [55]2 years ago
8 0

Answer:

it would be 36

Step-by-step explanation:

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if there are 300 calories in 100 g of a certain food, how many calories are there in a 30 g portion of food​
kap26 [50]

Answer:

90 calories

Step-by-step explanation:

Calories : quantity of food

there are 300 calories in 100 g of a certain food

300 calories : 100 g food

how many calories are there in a 30 g portion of food​

Let x = number of calories

x calories : 30 g food

Equate both ratios

300 calories : 100 g food = x calories : 30 g food

300/100 = x/30

300 * 30 = 100 * x

9000 = 100x

x = 9000/100

x = 90

x = number of calories = 90 calories

6 0
3 years ago
210 students were asked whether they want to go to a water park or a roller skating rink for a class party.
Brrunno [24]

Answer:

60.3

Step-by-step explanation:

hope this helps

4 0
3 years ago
Triangle ABC is similar to triangle DEF.
amid [387]

Answer:

1.5

Step-by-step explanation:

12 / 8 = 1.5

8 0
2 years ago
PLEASE HELP DUE IN 30 MINUTES
Vladimir79 [104]
<span>(a) At the end of Month 0, about how many more insects were in Pod A than Pod B? Explain.
In Pod A, the point is higher than 50, it could be 60 to 70 insects. Pod B has 20 insects. So, Pod A has at least 40 insects more than Pod B.

(b) Find and compare the growth rates of each pod. Show your work.
Pod A: (0,60) ; (1,80) ; (2,100) 
(80-60)/60 = 0.33
(100-80)/80 =  0.25

Pod B: (0,20) ; (1,44) ; (2,97)
(44-20)/20 = 1.2
(97-44)/44 = 1.2

Based on my computation, the rate of Pod A is lower than the rate of Pod B. 

(c) When does the population in Pod B exceed the population in Pod A? Explain. 
Pob B exceeds the population of Pod A at the END OF MONTH 4.

Pod A has a population of less than 200 while Pod B has a population of 469.</span>
5 0
3 years ago
Find both unit rates and explain what each means:<br><br> <br><br>250 miles on 8 gallons of fuel
My name is Ann [436]
250 miles on 8 gallons of fuel
means 250 miles were traveled on 8 gallons, so an average of 250mi/8gal = 31.25 mpg
3 0
3 years ago
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