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aleksley [76]
3 years ago
12

Can someone help please

Mathematics
1 answer:
Sophie [7]3 years ago
7 0

Answer:

33

Step-by-step explanation:

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A standard interior staircase has steps each with a rise (height) of 21 cm and a run (horizontal depth) of 24 cm. Research sugge
Alisiya [41]

Answer:

The staircase would extends 1.20 m if the changes were made.

Step-by-step explanation:

Acording tho the statement the total heigth is 5.04 m, that is 504 cm, each steps rises 21 cm. with this information we can calculte how many steps are in the whole staircase:

Number steps= \frac{Total heigth}{each step} \\Number steps= \frac{504}{21}  = 24 steps

To calculate how much the staircase will extend, whe have to multiply the horizontal depth times the number of steps.

using the run of 24 cm that gives us a lengt of 576 cm and if the changes were made the new length will be 696 cm.

So the staircase would extend an amount of (696 - 576), that is 120 cm, or 1.20 m, if the changes were made.

6 0
3 years ago
Reflect the triangle in the mirror line.
vredina [299]

Answer:

I can't include a picture but it will be the same shape except it will be flipped over  and will look a bit like differently angled packman with the back of the mouth apart the same distance, with the mouth "pointier" part of it one line away from the red line from the other side.... Oof sorry if this didn't help, I tried my best...

Step-by-step explanation:

From the "point" of the blue triangle, go diagonally SE 2 spaces. From there, draw a straight line to the right for 3 spaces. From there, draw upwards two spaces, and then connect those two lines into a triangle.

5 0
2 years ago
Planes A and B intersect in line s. If point Vis a point on line s, then it lies on:
Trava [24]

Answer:

Option C.

Step-by-step explanation:

It is given that planes A and B intersect in line s.

It means, all points lie on the line s must be lie on both plane A and B because s is the line of intersection of both plane A and B.

It is given that V is a point on line s.

Since, the point V lies on line s, therefore it is also lies on both plane A and B.

Hence, the correct option is C.

7 0
3 years ago
Bo and Erica are yoga instructors. Between the two of them, they teach 40 yoga classes each week. If Erica teaches 14 fewer than
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<span>21 Bo; 19 Erica,Vote me brainliest

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3 0
3 years ago
A research team hypothesizes that setting weekly scheduled online interactions versus not setting such interactions can boost th
leva [86]

Answer:

Type I error occurs when the null hypothesis, H0, is rejected, although it is true.

Here the null hypothesis, H0 is:

H0: Setting weekly scheduled online interactions will boost the well being of people who are living on their own during the stay at home order.

a) A Type I error would be committed if the researchers conclude that setting weekly scheduled online interactions will not boost the well being of people who are living on their own during the stay at home order, but in reality it will

b) Two factors affecting type I error:

1) When the sample size, n, is too large it increases the chances of a type I error. Thus, a sample size should be small to decrease type I error.

2)A smaller level of significance should be used to decrease type I error. When a larger level of significance is used it increases type I error.

7 0
3 years ago
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