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user100 [1]
2 years ago
11

Someone help me with these questions please

Mathematics
1 answer:
Kobotan [32]2 years ago
4 0
To multiply mix numbers and a normal fractions you make the mix number into a improper fraction. To do that you multiply the bottom and add the top. Here are the answers:
1/2 x 5 1/2 = 2 3/4
3 3/4 x 1/2 = 1 7/8
1/2 x 3 1/3 = 1 1/6
3/4 x 3 1/6 = 3 1/8
2/1 x 1 1/7 = 2 2/3

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What single decimal multiplier would you use to increase by 9% followed by 3% decrease
MaRussiya [10]

Answer:

= 94

Step-by-step explanation:

To work out the multiplier, first add or subtract the percentage from 100, then convert to a decimal. Example: we want to add 20% to £110. To work out the multiplier, add 20 to 100, to get 120, and then change it to a decimal (divide by 100) to get 1.2. The answer is £110 x 1.2 = £132.

so to workout an increase of 9% followed by 3% we would do:

9% - 3% = 6%. convert = 0.06 = 100-6 = 94 converted into 0.94 x 100 = 94

7 0
3 years ago
What is the best mechanical advantage that you can obtain for any door that you simply push open?
Komok [63]

Answer:

  2

Step-by-step explanation:

The best mechanical advantage you can get is obtained by pushing the door at its edge. If the door's center of mass is halfway from the hinge to the edge, then the advantage you get (in terms of force reduction) is ...

  1/(1/2) = 2

8 0
3 years ago
Please help me answer I need this question right, one more wrong answer and I'll fail
Shkiper50 [21]

Answer: The second option.

Step-by-step explanation:

1. Calculate the first volume assuming that the figure is completed (with no missing part). Therefore, you must apply the formula for calculate the volume of a square prism:

V_A=s^{2}*h

Where s is the side of the base and h is the height.

2. Then:

V_A=(40cm)^{2}*50cm=80,000cm^{3}

4. The volume of the missing part is calculated with the formula of a rectangular prism:

 V_B=l*w*h

Where l is the lenght, w is the width and h is the height. Then:

V_B=(40cm)(40cm-35cm)(50cm-25cm)=5,000cm^{3}

5. Therefore, you must subtract both volumes to obtained the volume of the figure:

V_f=80,000cm^{3}-5,000cm^{3}=75,000cm^{3}

6 0
2 years ago
ASAP please help!!!
Serggg [28]
Y+4<u><</u>9
subtract 4
y<u><</u>5
y is smaller than and equal to 5
so you shade from 5 to the negative end to infinity (to the left) and shade the 5 to show that it is included (attachment says A)







6 less than (-6) 2 times a number (2 time x) is greater than (>) 8 (8)

-6+2x>8
add 6
2x>14
divide 2
x>7
so
x is bigger than 7
shade from 7 to the positive end to infinity (to the right) and don't shade 7 but put a circle around it to show that it is not included (attachment says B )

I have included pictures of the number lines

4 0
3 years ago
Carter and his family are driving from Atlanta to Raleigh. They drive for 2 hours and 45 minutes at an average speed of 60 miles
bija089 [108]
The answer is C. Hope this helps :)
8 0
2 years ago
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