Answer:
See below
Step-by-step explanation:
13x + 5 + 17x - 4.5 + x
NOTE: You can only add/subtract LIKE terms . Here we have variable terms in x (13x , 17x and x) and 2 constants ( 5 and 4.5).
Sarah's next line is
18x + 17x - 4.5 + x
This is incorrect . It looks like she added 13x + 5 and got 18x!! Which is of course wrong because they are NOT LIKE terms. 5 is a constant and 13x is a variable term in x.
The third line is correct:-
35x - 4.5 + x.
She has added the 2 variables 17x and 18x.
Fourth line is 30.5x + x. She's at it again - Trying to subtract 4.5 from 35x .
Last line 31.5x
She has added the 2 terms in x correctly, but the final answer is wrong of course due to the earlier errors.
Answer:
x = 15
Step-by-step explanation:
2 = -7/4 + 1/4x
+7/4 +7/4 Add 7/4 to both sides
15/4 = 1/4x Divide both sides by 1/4
15 = x
If this answer is correct, please make me Brainliest!
Answer:
La cantidad de cable necesaria es de 47.43 metros.
Step-by-step explanation:
La información dada es;
Longitud, L de la tierra = 2 × Ancho, W de la tierra
Por lo tanto tenemos;
L = 2 × W
El área cubierta por la tierra = 125 m²
Lo que da;
L × W = 125 m² = 2 × W × W = 2 × W²
W² = 125/2 = 62.5
W = √62.5 =
= 7,91 metros
La longitud = 2 × ancho = 2 ×
= 5·√10 metros
La longitud del cable requerido = El perímetro de un rectángulo que forma la cerca = 2 × Ancho + 2 × Longitud del rectángulo
La longitud del cable requerido = 2 × 5·√10 + 2×
= 10 · √10 + 5 · √10 = 15 · √10 metros = 47.43 metros.
Answer:
x=2.98
Step-by-step explanation:
<span>On the day of a child's birth, a sum of money is to be invested into a certificate of deposit (CD) that draws 6.2% annual interest compounded continuously. The plan is for the value of the CD to be at least $20,000 on the child's 18th birthday.
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The substitution<span> method is used to eliminate one of the variables by replacement when solving a system of equations
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