Solve: 9 + 2 + 42 × 5 − 1 = solve: (9 + 2) + 42 × (5 − 1) =

2 answers:

lisabon 2012 [21]3 years ago

7 0

To solve: 9 + 2 + 42 × 5 − 1

=9+2+(42×5)-1

=9+2-1+(42×5)

=10+210

=220

To solve: (9 + 2) + 42 × (5 − 1)

=11+(42×4)

=179

One of the thing we should note is that multiplication always comes first, or we might get the wrong answer.

Hope it helps!

kirill115 [55]3 years ago

6 0

9 + 2 + 45 x 5 - 1 = 220.

(9 + 2) + 42 x (5 - 1) = is 220.

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How do you do this I have no idea

sveta [45]

Answer:

Step-by-step explanation:

Eliminate B C and D

6 0

3 years ago

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y <

levacccp [35]

Solution-

The given inequalities are,

$y < 2x-7,\\\\y\geq-\frac{1}{2}x+3$

Part A

As the former inequality is only '<' so it will be represented as dotted line, but in case of the later inequality there is '≥' so it will be represented as a solid line.

This happens because in only '<, >' the values must be either lesser or greater than y, they can't take the values of y, but in case of '≤, ≥' the values can be equal to y.

Taking origin (0, 0) and putting in the first inequality.

$\Rightarrow 0< 2(0)-7\\\\\Rightarrow 0\nless -7$

As the equation does not satisfy, so the shaded area will be on the other side of the origin.

Again taking origin (0, 0) and putting in the second inequality.

$\Rightarrow 0\geq-\frac{1}{2}0+3\\\\\Rightarrow 0\ngeqslant 3$

As the equation does not satisfy, so the shaded area will be on the other side of the origin.

The second attachment contains the feasible region.

Part B

In order to know whether the point (3, −7) is included in the solution area for the system or not, we must put it in both the equations, if it satisfies both then only it is within the solution area.

$\Rightarrow -7< 2(3)-7,\ -7\geq-\frac{1}{2}(3)+3\\\\\Rightarrow -7$