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uranmaximum [27]
3 years ago
7

I have 9 questions. multiply or divide

Mathematics
2 answers:
stira [4]3 years ago
7 0
1) 70
2) 80
3) 151
4) 73
5) 741
6) 7,739
Alchen [17]3 years ago
5 0
4. 70
5. 80
6. 151
7. 73
8. 741
9. 7,739
or you can use the calculator next time
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Lara solved an equation incorrectly, as shown below:
son4ous [18]

We have been given the steps to solve the equation as

Step 1: 2x = 18

Step 2: x = 18 − 2

Step 3: x = 16

There is an error in step 2.

We have 2x=18

x is in multiplication with 2. So in order to get rid of 2 from the left hand side, we perform opposite operation of multiplication i.e. division.

So we must divide both sides by 2.

Therefore, A is the correct option.

A) She did not divide 18 by 2.

8 0
3 years ago
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6.
Lady_Fox [76]

Answer:

Choice A

Step-by-step explanation:

Use the F. O. L. D method while solving

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3 years ago
A flying squirrel jumped from a tree 11 feet in the air at an initial velocity of 9 feet per sencond. The equation h=-2t^2+9t-11
vovikov84 [41]
This must be on the moon as the acceleration due to gravity in this equation must be around 1/8 that on earth. :)  Anyway...

h=-2t^2+9t+11

A)

dh/dt=-4t+9, when velocity, dh/dt=0, it is the maximum height reached

dh/dt=0 only when 4t=9, t=2.25 seconds

h(2.25)=21.125 ft  (21 1/8 ft)

B)

As seen in A), the time of maximum height was 2.25 seconds after the squirrel jumped.

C)

The squirrel reaches the ground when h=0...

0=-2t^2+9t+11

-2t^2-2t+11t+11=0

-2t(t+1)+11(t+1)=0

(-2t+11)(t+1)=0, since t>0 for this problem...

-2t+11=0

-2t=-11

t=5.5 seconds.

4 0
3 years ago
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Solve 2(4/x+8)=18 <br><br> Side note: 4/X is supposed to be a fraction
kirill115 [55]

9514 1404 393

Answer:

  x = 4

Step-by-step explanation:

Divide by 2, subtract 8 ...

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  4/x = 1

  4 = x . . . . . multiply by x

6 0
2 years ago
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Choose the system of inequalities that best matches the graph below.
mezya [45]
GuuUuuuuUuuurl we can’t see graphs sos
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3 years ago
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