Answer:
The answer is 600
Step-by-step explanation:
Front end estimation is a method of rounding use to make operations more easily and obtain approximate answers. Is called front end because we take the first digit of the number or the "front digit" and round our number to the nearest value detemined by our front end digit, making zeros the other numbers until the end.
In your case we have:
788.44 - 7 is the front number - in hundreds place - we round to nearest hundred 788.44 and this is 800.
225.6 - 1 is the front number - in hundreds place - we round to nearest hundred 225.6 and this is 200.
We perform the operation and obtain : 800-200 = 600.
Answer: R = 37.5 miles per gallon.
Step-by-step explanation:
Sandras truck need one gallon to drive 25 miles, then the rate of Sandra's truck is 25 miles per gallon.
Her sister's car can travel 12.5 more miles with one gallon, so the car travels
25mi + 12.5mi = 37.5 miles with one gallon, the rate is
R = 37.5 miles per gallon.
Now, with that number you can multiply the amount of gallons that you have and you will obtain the total amount of miles that you can travel with that amount of gallons.
Answer:
15x+7
Step-by-step explanation:
x+7+14x
x+14x+7
15x+7
The value of sin(30°) is: One-half ⇒ 2nd answer
Step-by-step explanation:
In a right triangle there are two acute angles, the side opposite to the right angle is called hypotenuse, and the other two sides are opposite and adjacent to the acute angles
- sine the acute angle (sin) = opposite side to it/hypotenuse
- cosine the acute angle (cos) = adjacent side to it/hypotenuse
- Tangent the acute angle (tan) = opposite side to it/adjacent side to it
In Δ QRS:
∵ m∠QRS = 90°
∵ SQ is opposite to ∠QRS
∴ SQ is the hypotenuse
∵ SQ = 10 units
∴ The hypotenuse = 10
∵ m∠RSQ = 30°
- The opposite side to ∠RSQ is RQ
∵ RQ = 5 units
∴ The opposite side to the angle of 30° = 5
∵ sin(30°) = opposite side to 30°/hypotenuse
∵ The opposite side to angle 30° = 5
∵ The hypotenuse = 10
∴ sin(30°) =
∴ sin(30°) =
The value of sin(30°) is: One-half
Learn more:
You can learn more about the trigonometry ratios in brainly.com/question/9880052
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Answer:
Step-by-step explanation:
proportion time...
3 teaspoons salt to 4 cups flour = x teaspoons salt to 28 cups flour
3 x
----- = ----- cross multiply
4 28
(4)(x) = (3)(28)
4x = 84
x = 84/4
x = 21 <==== 21 teaspoons of salt are needed