I don't understand these questions. I got them wrong on a test so I jus want to know what is the answer and how to do it:
Which estimate is the best for 1/2 of 385?
A)2
B)20
C)19
D)39
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The International Space Station is about 30 ft. from end to-end. A model of the sace station is 24 in. What scale was used to build the model?
A)1 in. = 1.25 in.
B)1 in. = 1.25 ft.
C)1 in. = 8 in.
D)1 in. = 8 ft.
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A soup recipe calls for 2 pounds of rice for 25 servings. How many pounds are needed for 30 servings?
A)3.5
B)0.5
C)2.4
D)3.3
Which estimate is the best for 1/2 of 385?
A)2
B)20
C)19
D)39
None of these answers is correct. Half of 385 is almost 200.
The International Space Station is about 30 ft. from end to-end. A model of the sace station is 24 in. What scale was used to build the model?
A)1 in. = 1.25 in.
B)1 in. = 1.25 ft.
C)1 in. = 8 in.
D)1 in. = 8 ft.
Imagine a 30-foot long room (like your classroom), which is the length of the space station. Your model is only 24 inches (2 feet) long (about the length of my arm and hand). Obviously, A and C, then, are wrong. Which do you think is correct -- B or D?
A soup recipe calls for 2 pounds of rice for 25 servings. How many pounds are needed for 30 servings?
A)3.5
B)0.5
C)2.4
D)3.3
Since 2 pounds of rice serves 25, then 1 pound of rice serves 12-13. Thirty servings is only 5 more than 25. Which do you think is the logical answer?
Is the second one B and the last one B too?
The second one is B. :-)
For the third one -- you'd only serve about 6 people with 0.5 (1/2) pound of rice. You need more than 2 pounds to serve 30 people.
Hint: 3 pounds of rice would serve about 37 people.
What number is between 2 and 3 in your possible answers?
oh 2.4 right?
Which estimate is the best for 1/2 of 385?
To find the best estimate for 1/2 of 385, we need to consider the given options: A) 2, B) 20, C) 19, D) 39.
To find 1/2 of a number, we divide the number by 2. So, to find 1/2 of 385, we calculate 385 ÷ 2, which gives us 192.5.
Now, let's compare this result to the given options:
A) 2: This is a very low estimate and not close to the actual answer of 192.5.
B) 20: This estimate is still significantly lower than the actual answer.
C) 19: This estimate is closer than option B, but still not very accurate.
D) 39: This is a high estimate and is more than the actual answer.
Based on these comparisons, the best estimate for 1/2 of 385 is C) 19, as it is the closest to the actual answer.
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The International Space Station is about 30 ft. from end to end. A model of the space station is 24 in. What scale was used to build the model?
To determine the scale used to build the model, we need to compare the actual length of the International Space Station (30 ft) to the length of the model (24 in).
The scale represents the relationship between the length of the actual object and the length of the model.
To find the scale, we can set up a proportion:
Actual length / Model length = Scale
Substituting the given values:
30 ft / 24 in = Scale
Since we want the answer in the same unit, we need to convert feet to inches. Since 1 ft = 12 in, we have:
(30 ft * 12 in/ft) / 24 in = Scale
Simplifying the expression:
360 in / 24 in = Scale
15 = Scale
Therefore, the scale used to build the model of the International Space Station is 1 in. = 15 ft. This means that for every 1 inch on the model, it represents 15 feet of the actual space station.
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A soup recipe calls for 2 pounds of rice for 25 servings. How many pounds are needed for 30 servings?
To determine the amount of rice needed for 30 servings, we can set up a proportion based on the given information:
Number of servings / Amount of rice = Scale
Substituting the given values:
25 servings / 2 pounds = 30 servings / X pounds
Cross-multiplying and solving for X:
25X = 2 * 30
25X = 60
X = 60 / 25
X ≈ 2.4
Therefore, the amount of rice needed for 30 servings is approximately 2.4 pounds. The closest option to this answer is C) 2.4.