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AnnZ [28]
3 years ago
14

How many steel rods are in a staircase frame with 12 steps?

Mathematics
1 answer:
kolbaska11 [484]3 years ago
3 0
180 steel rods to be exact
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I need help please help me quick
sergejj [24]

Count the squares in between each letter.

Point Q is 6 units from Point R

Point R is 7 units from Point T

Point T is 3 units from Point S

For the area, it is easiest to take the area of each of those shapes and then add them.

(3*7/2) + (6*7)

10.5 + 42 = 52.5 Square Units

3 0
3 years ago
The longer leg of a 30°- 60°- 90° triangle is 4 3 cm. Which is the length of the hypotenuse?
liberstina [14]

i think its 25 because of the Pythagorean theorem. 4^2 + 3^2= 16 + 9 =25

When you find the square root of 25 its 5

6 0
3 years ago
Select all the equations that are true when x = 4
V125BC [204]

Answer:

B and E

Step-by-step explanation:

A. 8x = 2

8(4) = 2

32 = 2

B. 19 + x = 23

19 + 4 = 23

23 = 23

C. 40/x = 5

40/4 = 5

10 = 5

D. -3x = 12

-3(4) = 12

-12 = 12

E. x - x - x - x = -8

4 - 4 - 4 - 4 = -8

0 - 4 - 4 = -8

-4 - 4 = -8

-4 + (-4) = -8

-8 = -8

7 0
3 years ago
Which table shows a function that is increasing only over the interval (-2, 1), and nowhere else?
Luda [366]

Answer:

Step-by-step explanation:c,b

4 0
4 years ago
Can someone take 3 min for there time and help me with this please??
seropon [69]
Since the left side of the equation says f(5), then plug in 5 for x. 

So, it is: 
              
-4|5| + 3
= -20 + 3
= 23 
4 0
3 years ago
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