Answer:
–21.87 ÷ 4.79
≈ -20 ÷ 5
≈ -4
Step-by-step explanation:
front end estimation means to round off to the most left digit.
eg 12 ≈ 10
X=angle
x+(10/9)x=(19/9)x=76
x=(76*9/19)=36
Answer:
18.3 m
Step-by-step explanation:
Sin(55) = 15/X
X = 18.31161883
Answer:

If
is constant, say k
Then,

∴ d ∝ w
Hence, weight is proportional to the density
Step-by-step explanation:
From the question,
Let w denote the weight of the rock in pounds
s denote the size of the rock in cubic inches and
d denote the density of the rock in pounds per cubic inch.
First, we will write the equation connecting w, s, and d.
We get

That is,

Now, given a 48-cubic-inch rock with weight w pounds, to show the proportional relation between the weight and the density, we will write

If
is constant, say k
Then,

∴ d ∝ w
Hence, density is proportional to the weight OR weight is proportional to the density
Wyatt could hike for 27 miles in 9 hours. Hope this helped! PLS MARK BRAINLIEST!