1/8
If you can make the bottom numbers (denominator) The same that you can use subtract the top numbers like normally
The answer to your question is
A.
-3x+1
If you have a quadratic equation in the form ax^2+bx+c
Step 1) Determine the product of AC (the coefficients in a quadratic equation)
Step 2) Determine what factors of a⋅ca⋅c sum to bb
Step 3) "ungroup" the middle term to become the sum of the factors found in step 2
Step 4) group the pairs.
She spent 85%
⇒ She is left with 100% - 85% = 15%
15% = $75
1% = $75 ÷ 15 = $5
85% = $5 x 85 = $$425
------------------------------------------------------------
Answer: She spent $425.
------------------------------------------------------------
There are all parallelograms.
To find their area we need to use only one formula.
A=base*height
Everything is given, so
1) A=b*h=5.3*4=21.2 km²
2) A=b*h= 11*10.7= 117.7 mi²
3) A=b*h= 10.5*7.9 =82.95 mi²