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3 years ago

How many steel rods are in a staircase frame with 20 steps?

Mathematics

2 answers:

lys-0071 [83]3 years ago

5 0

Answer:

There would be 300 steel rods in a staircase frame with 20 steps.

Step-by-step explanation:

For 1 step there would be 15 steel rods.

So all we have to do is multiply 15 by the 20 steps.

15 * 20 = 300

So the answer is 300 steel rods.

Hope this helps! :)

inysia [295]3 years ago

5 0

Answer: It would be 300 steel rods cause you do 15 times 20 which is 300

Step-by-step explanation: I know cause the math was really easy

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The graph of a function f(x)=5to the power of x -5 contains the point (2,y) what is the value of y

Mila [183]

I believe this this the function.

$f(x) = {5}^{x - 5}$

then

$f(x) = {5}^{2 - 5}$

then

$f(x) = {5}^{ - 3}$

then

$y = \frac{1}{125}$

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3 years ago

How to solve for x and y?

BlackZzzverrR [31]

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Hope this helps! :)

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4 years ago

Lucy has a strawberry lace that is 36cm long. She needs pieces 18mm long to decorate a cake. How long is the 36cm one in mm

KonstantinChe [14]

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7 0

3 years ago

Read 2 more answers

Which decimal is equivalent to 2.5%

Vesna [10]

Answer:

0.025

Explanation:

Divide the percentage by 100 to convert it to decmals.

for example 20%=

100

=.2

30%=

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3 years ago

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Pls help me! And explain how you found the answer pls

Dmitriy789 [7]

Answer:

y = $\frac{1}{2}$ x - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (- 22, - 14) and (x₂, y₂ ) = (- 18, - 12)

m = $\frac{-12+14}{-18+22}$ = $\frac{2}{4}$ = $\frac{1}{2}$ , thus

y = $\frac{1}{2}$ x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 18, - 12) , then

- 12 = - 9 + c ⇒ c = - 12 + 9 = - 3

y = $\frac{1}{2}$ x - 3 ← equation of line

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3 years ago