3 years ago

Sue can ride her bike 14 km/hr faster than she can walk. It takes 17.5 min longer to walk 2.5 km

Mathematics

1 answer:

alekssr [168]3 years ago

5 0

Answer:

6 km/hr

Step-by-step explanation:

Sue can ride her bike 14 km/hr faster than she can walk. So for each step, add 14 km/hr.

Solve

$-17.5r^2-245r+2100=0 \\\\r^2+14r-120=0 \\\\(r-6)(r+20)=0\\\\$

Therefore, it is 6.

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all sides of the square are 6 cm if he wants to enlarge the box by a scale factor of 1.6 what will the perimeter and area of the

aev [14]

The sides of the square is 6 cm with a scale factor of 1.6
So the actual size will be
= 6 * 1.6
= 9.6 cm

Getting the area:
Area = s^2
Area = 9.6^2
Area = 92.16 square centimeters

Getting the perimeter:
Perimeter = 4*s
Perimeter = 4 * 9.6
Perimeter = 38.4 cm

4 0

4 years ago

Which statements are true about squares? Select all that apply.

Daniel [21]

Answer: B, C, D

Step-by-step explanation:

Are correct:

B) Diagonals are perpendicular

C) Consecutive Angles are Supplementary

D) Diagonals bisect angles

Not correct:

A) Diagnols are congruent to sides is not correct the because diagonals of a square are congruent to each other, not to the sides