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Makovka662 [10]
3 years ago
14

Alex can shovel the driveway in 45 minutes if he works alone. Alex and Luisa can shovel the driveway in 20 minutes if they work

together. According
to this equation, Luisa can shovel the driveway in minutes if she works alone,
How many minutes would it take Luisa to shovel the driveway if she works alone?
Mathematics
1 answer:
Daniel [21]3 years ago
5 0

Answer: it would take her 25 minutes I believe

Step-by-step explanation:

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Find the volume of the box. Use the formula V = lwh. Rectangular box with sides x plus 1, 2x plus 1, and 3x minus 2.
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F) One number is 78 more than
vladimir2022 [97]

Answer:

The larger number = 116

Step-by-step explanation:

Let the smaller number = x

Given that one number is 78 more than  another, so

The larger number = x+78

Given that if we add 12 to the  smaller number, the result is 50, so

x+12=50

subtract 12 from both sides

x+12-12=50-12

Simplify

x=38

Therefore,

  • The smaller number = 38
  • The larger number = x+78 = 38+78 = 116

Thus, the larger number = 116

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3 years ago
What is the value of 8x-25 when x is equal to 12?
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71

Step-by-step explanation:

Evaluate for x=12

(8)(12)−25

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Fill in the Blank: When evaluating an observational study, the four factors that should be reviewed are Introduction, Methodolog
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The correct term to fill in the blank would be   discussion. When evaluating an observational study, the four factors that should be reviewed are Introduction, Methodology, Results, and Discussion. In an observational study, the researcher cannot control the variables. The researcher wold draw some inferences from a set of sample without controlling anything.
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Use the diagram below to answer parts B, and C.
expeople1 [14]

Answer:

The volume of the triangular prism in the diagram is:

  • <em>105.5</em> in^{3}

The surface area of the triangular prism in the diagram is:

  • <em>10.75</em> in^{2}

Step-by-step explanation:

First, we're gonna calculate the surface area to obtain the volume, then, to calculate the area of a triangle (because the surface o a triangular prism is just a triangle), you can use the formula:

  • Area of a triangle = (base * height) / 2

We have this data from the diagram, where the base of the triangles is 5 inches and, the height is 4.3 inches, replacing this in the formula:

  • Area of a triangle = ( 5 in * 4.3 in) / 2
  • Area of a triangle = ( 21.5 in^{2}) / 2
  • Area of a triangle = <em>10.75</em> in^{2}

Now, we can calculate the volume of the triangular prism with the next formula:

  • Volume of a triangular prism = surface area * depth

In the diagram, we can see the depth is 14 inches, then:

  • Volume of a triangular prism = 10.75 in^{2} * 14 in
  • Volume of a triangular prism = <em>105.5</em> in^{3}

How you can see with the calculations perfomed, <em>the surface area is 10.75 </em>in^{2}<em> and the volume of that triangular prism is 105.5 </em>in^{3}.

7 0
3 years ago
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