Natalia1634
Natalia1634
01-10-2017
Mathematics
contestada
Explain please thanks
Respuesta :
Catya
Catya
01-10-2017
all the angles inside a triangle add up to 180°.
(2x + 15) + (5x + 5) + x = 180
8x + 20 = 180
8x = 180 - 20
8x = 160
x = 160/8
x = 20
the question is asking what angle B is,
B = 2(20) + 15
B = 40 + 15
B = 55°
Answer Link
VER TODAS LAS RESPUESTAS ( 74+ )
Otras preguntas
Raul calculated that he would spend $125 on school supplies this year but he accually spent 87.50 on school supplies what is his percent of error
what is 4k+44=10k-10
The Panama Canal cuts through
An electron in a sodium atom moves from the third shell to the fourth shell. This change is a result of the atom (1) absorbing energy (3) gaining an electron (2
Adding a catalyst to a chemical reaction results in (1) a decrease in activation energy and a decrease in the reaction rate (2) a decrease in activation energy
When an Arrhenius acid dissolves in water, the only positive ion in the solution is (1) H+ (3) Na+ (2) Li+ (4) K+
Adding a catalyst to a chemical reaction results in (1) a decrease in activation energy and a decrease in the reaction rate (2) a decrease in activation energy
What is the half-life of sodium-25 if 1.00 gram of a 16.00-gram sample of sodium-25 remains unchanged after 237 seconds? (1) 47.4 s (3) 79.0 s (2) 59.3 s (4) 11
20 is 80% of what number?
The ultimate decision by Hitler to exterminate all Jews
