Test prep
steel is a mixture of iron, carbon, and other elements. the table shows the
number of parts of each element in two different-sized samples of steel.
other elements
iron
carbon
7
90
sample # 1
sample # 2
3.5
45
1.5
a. what is the unit rate of parts iron to parts carbon?
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b. what is the unit rate of parts iron to parts all other elements, including
carbon?

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

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step-by-step explanation:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

exactly you go it

step-by-step explanation: