Answer:
A
Step-by-step explanation:
X=-7
Answer:
4
Step-by-step explanation:
if the required number is 'x', then the sum of 2 times the number and 10 is 2x+10; the difference of the number and 1 is x-1. Using these two equation it is possible to make up the common one:
2x+10=6(x-1);
4x=16;
x=4.
Answer:
30.3 hours
Step-by-step explanation:
v = 11
h = 1.8v + 10.5
Now Substituting v = 11 in the given equation,
h =( 1.8 × (11) ) + 10.5
h = 19.8 + 10.5
h = 30.3
30.3 hours in front of the TV someone with 11 video games would spend
Using the formula for the perimeter and area of rectangle, the dimensions are: Length = 19 m; width = 9 m.
<h3>What is the Perimeter and Area of a Rectangular Shape?</h3>
Perimeter = 2(length + width)
Area = (length)(width).
Let x represent the length and y the width, therefore:
2(x + y) = 56 --> eqn. 1
xy = 171 --> eqn. 2
Rewrote eqn. 1
x + y = 56/2
x = 28 - y
Substitute x = (28 - y) into eqn. 2
171 = (28 - y)y
171 = 28y - y²
171 - 28y + y² = 0
y² - 28y + 171 = 0
Factorize
(y - 9)(y - 19)
y = 9 and y = 19
Therefore, the dimensions are: Length = 19 m; width = 9 m.
Learn more about the perimeter and area of rectangle on:
brainly.com/question/24571594
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