(A) Bella's TV ratio of sides: 36"/27" = 1.333...
Lenny's: 52"/29.25" = 1.777...
Bella's and Lenny's TVs are NOT similar - their side ratios are different. Bella's is 4:3 while Lenny's is close to 16:9.
(B) Bella's TV has an exact ratio of 4:3 (36/27=4/3) and so is the older type.
Lenny's TV has a ratio of 52"/29.25". Divide both 52 and 29.25 by 3.25 to get 16/9, or 16:9. So Lenny's is the newer type.
Answer: 400 miles
Solving Steps:
0.4x + 80 = 0.5x + 40
-0.1x + 80 = 40
-0.1x = -40
x = 400 miles
Answer:
As a percent: 115%
As a decimal: 1.15
As a fraction:
Step-by-step explanation:
<u>Percentages</u>
Suppose Michael spends some amount of money on food, and that money is set at 100%. He leaves a 15% tip for the waitress.
Thus, he is really paying 100%+15% = 115% of the original price.
To express a percentage as a decimal, we just divide by 100:
115% = 115/100 = 1.15
The same division should be simplified instead of operated to express the percentage as a fraction:
115% =
Simplifying by 5:
115% =
Summarizing:
As a percent: 115%
As a decimal: 1.15
As a fraction:
Answer:
85
Step-by-step explanation:
Answer:
Step-by-step explanation:
La función es
La derivada de la ecuación nos da la tangente
El punto es
Entonces en
La pendiente de la tangente es .
El ángulo de la pendiente está dado por
El ángulo que forma la tangente con el eje x positivo es