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telo118 [61]
3 years ago
7

This drawing shows the plan for a ramp to be installed in front of a building. Using the dimensions given, find the length of th

e ramp.
A. (the square root of) 26 ft.
B. (the square root of) 27 ft.
C. 16ft
D. 35ft
Mathematics
2 answers:
hammer [34]3 years ago
6 0

Answer:

D

Step-by-step explanation:

I am not sure

otez555 [7]3 years ago
5 0

Answer:

A

Step-by-step explanation:

h^{2}  =  a^{2}  +  b^{2}

h^{2}  =  5^{2}   +  1^{2}

h^{2}  = 25     +   1

h^{2}  = 26

\sqrt{26} = h

or      \sqrt{26}  =  5.09901951359

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The sides of a rectangle are in the ratio 4:7.
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
Calcular cuántos números impares hay entre 20 y 50 y calcular su suma​
const2013 [10]

Answer:

<em>La suma de los impares entre 20 y 50 da 875</em>

Step-by-step explanation:

<u>Suma de Progresiones Artiméticas </u>

Una progresión aritmética es aquella en la cual, cada término se obtiene como el anterior mas una cantidad fija llamada diferencia común. El término general de una progresión aritmética es

a_n=a_1+(n-1)r

Donde a_1 es el primer término, n el número de términos y r la diferencia común o radio. La suma de los primeros n términos se calcula como:

\displaystyle S_n=n\frac{a_1+a_n}{2}

En nuestro ejercicio, se deben sumar los números impares entre 20 y 50, se forma la progresión

21, 23, 25, 27, ....49

Sabemos que a_1=21,\ a_n=49,\ r=2

Primero averiguamos cuántos términos son, despejando n del término general

\displaystyle n=\frac{a_n-a_1}{r}+1

\displaystyle n=\frac{49-21}{2}+1

\displaystyle n=25

La progresión tiene 25 términos

Ahora la suma es

\displaystyle S_{25}=25\frac{21+49}{2}

\displaystyle S_{25}=25\frac{70}{2}

S_{25}=875

La suma de los impares entre 20 y 50 da 875

6 0
4 years ago
If you reflect any shape across the x-axis and then rotate it 90° clockwise about the origin, do you get the same result as if y
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Answer:

Yes, reflecting a shape across the x-axis and then rotating it 90° clockwise about the origin gives the same results as reflecting it across the y-axis followed by rotating it 90° counterclockwise about the origin. This means these two sequences of transformations are equivalent.

Step-by-step explanation:

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