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maksim [4K]
4 years ago
8

Rosa can till 375 ft² of land in 15 min.

Mathematics
2 answers:
goldenfox [79]4 years ago
7 0
375 ft² of land in 15 min =    375 ft² /15 min ==== 25<span>ft² / min (B)</span>
hoa [83]4 years ago
4 0

Answer:  The correct option is (B)  25 ft²/min.

Step-by-step explanation:  Given that Rosa can till 375 ft² of land in 15 min.

We are to find Rosa's tilling rate.

We will be using the UNITARY method to solve the given problem.

We have

In 15 min, the area of the land tilled by Rosa = 375 ft².

Therefore, in 1 min, the area of the land tilled by Rosa will be

\dfrac{375}{15}=25~\textup{ft}^2.

That is, Rosa can till 25 ft² of land in 1 min.

Therefore, Rosa's tilling rate is 25 ft²/min.

Thus, (B) is the correct option.

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Triangle S R Q is shown. Angle S R Q is a right angle. An altitude is drawn from point R to point T on side S Q to form a right
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Answer:

Option b.

Step-by-step explanation:

Given : \Delta SRQ is right angled triangle . An altitude is drawn from point R to point T on side S Q to form a right angle. The length of S T is 9 and the length of T Q is 16. The length of S R is x.

In the figure, \angle SRQ=90^{\circ} and RT is perpendicular to SQ.

We know that in a right angled triangle if a perpendicular is drawn from the vertex of the right angle to the hypotenuse then triangles on both sides of the perpendicular are similar to each other and to the whole triangle .

Therefore , \Delta STR\sim \Delta SRQ

Also, we know that if two triangles are similar then their sides are proportional .

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So, option b. is correct

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3 years ago
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