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3 years ago

Classify the following triangle as acute, obtuse, or right

Mathematics

1 answer:

dybincka [34]3 years ago

6 0

Answer:

Please provide an image of the triangle so that an answer can be provided.

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A man can drive a motorboat 70 miles down the Colorado River in the same amount of time that he can drive 40 miles upstream. Fin

pochemuha

The speed of the current is 40.34 mph approximately.

SOLUTION:

Given, a man can drive a motorboat 70 miles down the Colorado River in the same amount of time that he can drive 40 miles upstream.

We have to find the speed of the current if the speed of the boat is 11 mph in still water. Now, let the speed of river be a mph. Then, speed of boat in upstream will be a-11 mph and speed in downstream will be a+11 mph.

And, we know that, $\text{ distance } =\text{ speed }\times \text{ time }$

$\begin{array}{l}{\text { So, for upstream } \rightarrow 40=(a-11) \times \text { time taken } \rightarrow \text { time taken }=\frac{40}{a-11}} \\\\ {\text { And for downstream } \rightarrow 70=(a+11) \times \text { time taken } \rightarrow \text { time taken }=\frac{70}{a+11}}\end{array}$

We are given that, time taken for both are same. So $\frac{40}{a-11}=\frac{70}{a+11}$

$\begin{array}{l}{\rightarrow 40(a+11)=70(a-11)} \\\\ {\rightarrow 40 a+440=70 a-770} \\\\ {\rightarrow 70 a-40 a=770+440} \\\\ {\rightarrow 30 a=1210} \\\\ {\rightarrow a=40.33}\end{array}$

8 0

3 years ago

Nine times the sum of n and one

Sveta_85 [38]

Answer:

i have no idea what you mean

5 0

3 years ago

6 What is the surface area? 26 yd 26 yd 24 yd 33 yd 20 yd square yards

CaHeK987 [17]

Answer:

26 yards = 78 ft square

78 × 78 = 6084 foot of surface area

Step-by-step explanation:

I think this is correct. Multiply 26y× 3 ft = (78)^2

4 0

3 years ago

What is the solution to x-4y=-5 and -x+6y=7

Triss [41]

x - 4y = -5
-x + 6y = 7
---------------add
2y = 2
y = 1

 x - 4y = -5
x - 4(1) = -5
x - 4 = -5
x = -1

answer
x = -1 and y = 1

8 0

3 years ago

Which expression is equivalent to108--3? O 5/3) O 63 O 73i

Wewaii [24]

Answer:

(A) option

Step-by-step explanation:

becoz according to me when I solved this sum then answer was 5√3

4 0

3 years ago