Use compatible numbers to estimate the quotient 784 divided by 8

Mathematics

2 answers:

Afina-wow [57]3 years ago

7 0

98,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

algol [13]3 years ago

7 0

Answer:

Step-by-step explanation:

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Write an expression for: half a number decreased by 12.

Gennadij [26K]

Answer:

x/2 - 12

Step-by-step explanation:

let the number be x

half a number means x divide by 2. i.e x/2

when decreased by 12 means x/2 - 12

5 0

2 years ago

Rob is making a tent out of canvas in the shape of a square pyramid. Each side of the square base is 6 feet long, and the height

Elena L [17]

The amount of balloons in the tent is 125.075 feet cube. From the given options, approximately, option D is correct

Solution:

Given, Rob is making a tent out of canvas in the shape of a square pyramid. Each side of the square base is 6 feet long, and the height is 6.3 feet.

Rob filled the tent with balloons,

We have to find which measurement BEST describes the amount of balloons in the tent?

As tent if filled with balloons the amount of balloons equals with volume of tent.

Volume of tent is given as:

$\text { volume of tent }=a^{2}+2 a \sqrt{\frac{a^{2}}{4}+h^{2}}$

where "a" is side length and "h" is height.

$\begin{array}{l}{\text { Then, Volume }=6.3^{2}+2(6.3) \sqrt{\frac{6.3^{2}}{4}+6^{2}}} \\\\ {=39.69+12.6 \sqrt{9.925+36}} \\\\ {=39.69+12.6 \times 6.7766=39.69+85.385} \\\\ {=125.075 \mathrm{ft}^{3}}\end{array}$