Answer:
X= -15/7
Step-by-step explanation:
search up on photomath it's really useful
Answer:

Step-by-step explanation:
Given that,
Mass of material, m = 6900 grams
Volume of the material, V = 4.5 quarts
We need to find the density in pounds per cubic foot
We know that,
1 pound = 453.59 grams
⇒ 6900 grams = 15.21 pounds
Also, 1 cubic foot = 29.92 quarts
4.5 quart = 0.15 feet³
Density = mass/volume
Or

Hence, the density of the material is 
Okay I'm not too sure on this but I believe it is the third one.
I hope this helps!!
Answer:
pls give brainlist
Step-by-step explanation:
a.
50 x 9 = 450. A=450
b. I can scale the unit rate of the area given above and largen the area of the map. Ex.
=
<---(scaled by 2)
Then we can enlarge it however we want so,
=
<--(scaled by 2 once more)
If the statement above is true then we can scale times 4.
=
<---(scaled by 4)
A= 
all i can give u at the moment , if u go on M a t h w a y it can help