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tigry1 [53]
3 years ago
12

Please help on these!

Mathematics
2 answers:
Tomtit [17]3 years ago
7 0
1.
A=\dfrac{14\cdot5}{2}=\dfrac{70}{2}=35

2. Look at the picture.

A_I=8\cdot13=104\ in^2\\\\h=19-13=6\ in\\\\A_{II}=\dfrac{8\cdot6}{2}=\dfrac{48}{2}=24\ in^2\\\\A=104+24=128\ in^2

Kobotan [32]3 years ago
4 0
Area of the triangle = 1/2 x base x height
Area  = 1/2 x 14 x 5 = 35 unit²

Answer: 35 unit²

Area of the rectangle = length x width
Area of the triangle = 1/2 x base x height
Area = (13 x 8) + (1/2 x 6 x 8) = 104 + 24 = 128 in²

Answer:  128 in²

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John wants to construct a dog pen at the back of his garage. he will use the wall of the garage as one side of the pen and will
Komok [63]

If . he will use the wall of the garage as one side of the pen and will construct the rest of the rectangular pen from 28 yards of fencing. The maximum area that can be achieved for the dog pen is: 392 yards².

<h3>Maximum area </h3>

Let x represent the  width of the fence

Let the two widths represent  2x

Let the  length of one side represent 28-x

Let A represent Area

Hence,

A=x(28-x)

=-x²+28x

Using calculus or vertex = -b/2a,

x value = -28/-2

x = 14

2x = 28

So,

Maximum area= 14 ×28

Maximum area = 392 yards²

Therefore the maximum area is 392 yards².

Learn more about maximum area here: brainly.com/question/16665507

#SPJ1

8 0
1 year ago
6. We want to build the smallest cube possible using bricks with dimensions 8 cm - 12 cm 20 cm. How many bricks do we need?​
Georgia [21]

Answer:

1200

Step-by-step explanation:

We’ll need a number that is evenly dividable by all three values: 8,12 & 15. We can develop the generic common multiple by multiplying all three numbers and get 1440. But is that the smallest common multiple? The quick and dirty way to factor the number is to divide it by it’s various elements and see what works. In this case 1440/12=120 which is the smallest common multiple of the three numbers. The smallest length is therefore 120.

In order to find how many bricks just divide (120x120x120)/(8x12x15)=1200 bricks

7 0
2 years ago
Five carpenters worked 15 &amp; 3/4, 15 &amp; 1/4, 17 &amp; 1/2, 12 &amp; 1/2 and 17 &amp; 1/2 hours respectively. What was the
azamat

<u>The total </u><u>labor cost</u><u>  of the carpenters is $2296.91</u>

The carpenters worked 15\frac{3}{4} , 15\frac{1}{4}, 17\frac{1}{2}, 12\frac{1}{2}, 17\frac{1}{2}

<h3>Conversion of Fraction</h3>

Let's convert the mixed fraction to improper fraction

So, we would have

  • 63/4,
  • 61/4,
  • 35/2,
  • 25/2
  • 35/2.
<h3>Working Cost</h3>

Let's sum it up and multiply by the working cost per hour

63/4 + 61/4 + 35/2 + 25/2 + 35/2 =78.5

  • The total labor cost is = total hours worked * hourly rate.

This becomes 78.5*29.26=2296.91

<u>The total labor cost is $2296.91</u>

Learn more about rate here;

brainly.com/question/1115815

3 0
3 years ago
How many games must be played when 7 players are in the tournament?
AURORKA [14]
I believe the answer is 14
7 0
3 years ago
Sophia took home 2/9 of the pizza that was left over from a party. The amount she took represents 1/2 of a whole pizza. The equa
andre [41]

Answer:

19/5

Step-by-step explanation:

i used a calculater

5 0
3 years ago
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