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3 years ago

Brainliest answer pls answer appropriately or i will report

Mathematics

2 answers:

tamaranim1 [39]3 years ago

5 0

Answer:

30cm +27cm =57cm
10cm +6cm=16cm
17cm +8cm =25cm
57cm+16cm+25cm =
50cm+10cm+20cm=80cm
7cm+6cm+5cm=18cm
80cm+18cm=98cm

Gnom [1K]3 years ago

3 0

Answer:

2064cm²

Step-by-step explanation:

The total surface area of a shape is given by the area of each side. In this case 2 × the trapezium/trapezoid, 1 × the top side, 1 × the bottom side, 1 × the left slanted side and 1 × the right slanted side.

Let's start with the trapeziums/trapezoids. The formula for their area is $\frac{1}{2}$ h(a+b). In this case, because there are 2, we can work them out at once without the $\frac{1}{2}$ .

By substituting a with 6cm (the top length), b with 27cm (the bottom length), and h with 8cm (the height), the equation becomes 8(27+6) or 8×33, which can be solved to 264cm².

The rest of the sides are rectangles, which use the formula lw for area. For the top side, this is 6×30, or 180cm².

For the bottom side, this is 27×30, or 810cm².

For the left slanted side, this 10×30, or 300cm².

For the right slanted side, this is 17×30, or 510cm².

We should add these all together to get the final result. This equation is 264+180+810+300+510. This adds up to 2064cm².

**This content involves total surface area of prisms, which you may wish to revise. I'm always happy to help!

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Several years ago, 50% of parents who had children in grades K-12 were satisfied with the quality of education the students r

galina1969 [7]

Answer:

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Step-by-step explanation:

We have to see if 50% = 0.5 is part of the confidence interval.

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

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For this problem, we have that:

$n = 1095, \pi = \frac{478}{1095} = 0.4365$

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The lower limit of this interval is:

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The upper limit of this interval is:

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5 0

3 years ago

A photo is 15 cm high and 9 cm wide Michael wants to but porcelain shrink it so it's height is 6 cm High how wide will it then b

weqwewe [10]

Answer:

3.6cm

Step-by-step explanation:

Given data

We are given that the dimension of the photo is

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15cm height will make 9cm width

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3 years ago

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Serggg [28]

Answer:

-1 and -30 -1+-30=-31

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-6 and -5 -6+-5=-11

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30 and 1 30+1=31

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10 and 3 10+3=13

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5 and 6 5+6=11

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Step-by-step explanation:

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