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podryga [215]
3 years ago
10

Is a 90° angle perpendicular ​

Mathematics
2 answers:
Dima020 [189]3 years ago
7 0

Answer:

yes

Step-by-step explanation:

SCORPION-xisa [38]3 years ago
4 0

Answer:

If you're asking about the lines then yes since perpendicular lines intersect at a right or 90 degree angle.

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A cyclist rides her bike at a rate of 5 meters per second. What is this rate in kilometers per hour ? How many kilometers will t
Romashka-Z-Leto [24]

Answer:

18 km/hr

90 km

Step-by-step explanation:

We know that there are

1000 m = 1 km

and

3600 s = 1 hr

We need to convert m/s to km/h

5 m      3600s        1 km         18000km       18 km

------ * ------------  * ------------ = ---------------   = ------------

s                1 hr         1000m    1000 hr            hr

It is 18 km/hr since the units cancel.

We want to know how far the cyclist travels

d=rt

We know the rate 18km/hr and the time = 5 hr

d = 18 km/hr * 5 hr

d =90 km

7 0
3 years ago
John bought a pack of 18 cards for $2.99. About how much did each card cost?
Iteru [2.4K]

Answer:

0.166

Step-by-step explanation:

Bought 18 cards for $2.99, so you can write it like this:

18 = 2.99

Since you want to find the value of one card, u could write that like this:

1 = x  (where x is the unknown value of 1 card)

To get from 18 to 1, you divide by 18, so to get to 2.99 to x you must divide by 18 as well.

So 2.99/18 = 0.166

therefore x = 0.166

So you can say that each card costs about 17 c

6 0
3 years ago
36 inches = how many degrees
denis-greek [22]

Answer:36 degrees

Step-by-step explanation:

Because when is from zero it is at 0° then you got 36° when you go to 36°.

6 0
3 years ago
wright down in terms of n, an expression for the nth term of the following sequences: a) 12,10,8,6,4 b) 25,20,15,10,5
Arturiano [62]

Answer:

a)a_{n} =−2n+14

b)a_{n}  = − 5 n + 30

3 0
3 years ago
What is the value of x that satisfies the equation<br> 15(x + 9) = -21?
Alexeev081 [22]

Step-by-step explanation:

follow the steps careful

hope this helps

4 0
2 years ago
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