Answer:
57
Step-by-step explanation:
-7a + 4b
Let a = -3 b = 9
Substitute the values in
-7(-3) + 4(9)
Multiply
21 + 36
Add
57
Answer:
1.020 < 1.200
= <
Step-by-step explanation:
If you look at 1.020 like 1.02 and 1.200 like 1.2, 1.2 is more and the 2 in 1.200 is in the <em>tenths</em> place.
<span>1520.5</span>^2 feet is the answer
Answer:
19 %
Step-by-step explanation:
380 : 2000 = 0.19
0.19 X 100%= 19 %

Correct option is C)
On putting x=2y+5 in second equation, we get
y=(4y+7)(2y+14)
⇒8y 2 +70y+98=y
⇒8y 2+69y+98=0
Discriminant D=69 2−4(8)(98)=1625>0
Hence, the equation has 2 real roots.
Therefore, there are 2 ordered pair.
Option C is correct.
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