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4 years ago

An ostrich can run at a rate of 50 miles in 60 minutes.At this rate,how long would it take an ostrich to run 15 miles?

1 answer:

3 0

If an ostrich can run 50 miles in one hour then he can run 12.5 miles in 15 minutes. 15 minutes is 1/4 of an hour. Multiply 50 by 0.25 = 15.

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Use in the elimination mentioned for this problem 6x+5y=11 x+y =6

Oliga [24]

Answer:

{x = -19 , y = 25

Step-by-step explanation: System solved by elimination

Solve the following system:

{6 x + 5 y = 11 | (equation 1)

{x + y = 6 | (equation 2)

Subtract 1/6 × (equation 1) from equation 2:

{6 x + 5 y = 11 | (equation 1)

{0 x+y/6 = 25/6 | (equation 2)

Multiply equation 2 by 6:

{6 x + 5 y = 11 | (equation 1)

{0 x+y = 25 | (equation 2)

Subtract 5 × (equation 2) from equation 1:

{6 x+0 y = -114 | (equation 1)

{0 x+y = 25 | (equation 2)

Divide equation 1 by 6:

{x+0 y = -19 | (equation 1)

{0 x+y = 25 | (equation 2)

Collect results:

Answer: {x = -19 , y = 25

6 0

4 years ago

Please help me with this question

muminat

The exercise is apparently directed toward getting you to group the positive integers together and the negative integers together before you work out the difference. Doing that gives you ...

a) (10 +5) -19

b) = 15 -19

= -4

_____

Personally, I wouldn't do that for this problem. If you do the arithmetic in order, it seems easier to me because you're only doing single-digit arithmetic after the first sum.

= (10 -19) +5

= -9 +5

= -4

_____

The idea is that there are different stratgies that you can employ to simplify your work and reduce errors. Grouping positive and negative numbers together is one such strategy. Arranging the sums so they almost cancel is another strategy you can use.

4 0

3 years ago

Please tell me the final answer and process

Vladimir [108]

I would say 20 because if you add the 10 with 10 the other shaded area so that is why i say 20

5 0

3 years ago

Label the trapezoids with the given side measures: , and Use similar figures and the given side lengths to complete the followin

Anna71 [15]

Answer:A trapezoid has ONLY ONE set of parallel sides. When proving a figure is a trapezoid, it is necessary to prove ... The angles on the same side of a leg are called adjacent angles such as ∠A and ∠D are ... Image: The midsegment of a trapezoid is: parallel to both bases has length ... Given : ABCD is an isosceles trapezoid.

Step-by-step explanation:

4 0

3 years ago

Write an equation of the line with the given slope, m, and y-intercept (0,b). m = 2, b = 1

xeze [42]

Y= 2x + 1 is the equation hope this helps!

4 0

3 years ago

Read 2 more answers