juanrangel207 juanrangel207

17-08-2016
Mathematics

contestada

please help
Find the value of x. Round the answer to the nearest tenth, if needed.

A.9
B.18.9
C.22
D.32.1

please help Find the value of x Round the answer to the nearest tenth if needed A9 B189 C22 D321 class=

Respuesta :

mathwonder7 mathwonder7

17-08-2016

its D does your work need to be shown?

Answer Link

dalendrk dalendrk

17-08-2016

[tex]\Delta ADC\sim\Delta CDB\\\\therefore\\\\\dfrac{21}{x}=\dfrac{x}{49}\ \ \ \ |cross\ multiply\\\\x\cdot x=21\cdot49\\\\x^2=21\cdot49\to x=\sqrt{21\cdot49}\\\\x=7\sqrt{21}\to x\approx32.1[/tex]

Answer: D. 32.1

Ver imagen dalendrk

Answer Link

Otras preguntas

The torque output of an engine is usually measured in the units of A RPM B BHP C FOOT POUNDS D FEET PER POUND

find the percentage 40% of an hour

X/2+x/3=3/4 Solve for x

Which of the below is not one of the properties of logarithms? A; the log of a product (ab) is equal to the addition of log a nad log b B; the log of the sum of

how do u factor this x^2−2x−1 x^2−3x+1 please show work

Random answers will be reported!! Question Which statement is true? A) inexhaustible resources are limited B) only tangible goods are scarce C) exhaustible

Helen and her colleagues require a blank to evaluate the goals and objectives

What is the name of the legislation passed during the Clinton administration that attempted to create universal health care? A. Affordable Care Act B. Medicred

during the 1600s and the 1700s, the enlightenment celebrated the

Find an equation for the line that passes through the points (3,-5) and (-5,5).