Answer:
Two color drawings and seven black and white drawings.
Step-by-step explanation:
If it takes 25 minutes for a color drawing it would take him 50 minuies to do two, leaving him with a remainder of 70 minutes. In that time he can create 7 black and white drawings. 7+2=9, giving you your answer.
To determine the number of black and white and color drawings, set up a system of equations based on the given information. Solve the system of equations by adding them together. The solution is 3 black and white drawings and 6 color drawings.
To solve this problem, we can set up a system of equations. Let the number of black and white drawings be represented by x and the number of color drawings be represented by y.
The first equation is based on the fact that it takes Akira 10 minutes to make a black and white drawing and 25 minutes for a color drawing. So, the total time spent on black and white drawings is 10x minutes and the total time spent on color drawings is 25y minutes.
The second equation states that on Saturday Akira made a total of 9 drawings in 2 hours, which is equivalent to 120 minutes. So, we have x + y = 9.
Adding the equations 10x + 25y = 120 and x + y = 9, we can solve for x and y. Solving this system of equations gives us x = 3 and y = 6.
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B.77 x 7-10
C. 7-2 x 7-5
D. 7-5 x 72
(All expressions have an Integer either negative or positive u just can't type it correctly here and B and D or not 77 or 72 it's 7 and positive 7 and D is 7 positive 2
(a + b)^2?
Answer: (a + b)² = 50
Step-by-step explanation:
(a + b)² = (a + b)(a + b)
= a² + ab + ab + b²
So, (a + b)² = a² + b² + 2ab
Then substitute the value of ab and (a² + b²)
(a + b)² = 30 + 2(10)
= 30 + 20
Therefore, (a + b)² = 50
a. The populations of grasshoppers, mice, and snakes would increase.
b. The populations of grasshoppers and mice would increase, while the population of snakes would decrease.
c. The populations of grasshoppers would decrease, while the population of mice and snakes would increase.
d. the number of plants will increase, the number of grasshoppers will increase, the number of snakes will increase
Answer;
-The populations of grasshoppers, mice, and snakes would decrease.
Explanation;
-The food web or a food chain describes the series of relationships that occur between predators and prey in an ecosystem.
-Several types of life forms form the food web. Green plants that can make their own food through photosynthesis are the web's producers. They form the bottom of the chain. Animals that get food from other animals and plants are consumers. Decomposers feed off dead plants and animals because decomposers cannot make their own food.
-If producers were removed in a food chain then, all the other animals in the food web would die too, because their food supplies would have died out. The populations of the consumers would fall as the population of the producer fell.
Answer:
B
Step-by-step explanation:
Answer:
6 or 3
Step-by-step explanation: