2 years ago

Is 7.8 cm, 1.1 cm, 9.1 cm a triangle

1 answer:

5 0

Answer: The sum of the lengths of any two sides of a triangle must be greater than the length of the third side. Since, 11 + 21 > 16, 11 + 16 > 21, and 16 + 21 > 11, you can form a triangle with side lengths 11 mm, 21 mm, and 16 mm.

Step-by-step explanation:

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An office needs 6,300 envelopes. If there are 36 envelopes in each box, how many boxes

densk [106]

Answer:

175 boxes

Step-by-step explanation:

si cada caja tiene 36 sobres y necesitas 6300. entonces tenemos que el numero de cajas = x

x = 6300 / 36

x = 175

boxes = 175

4 0

2 years ago

Solve 5(2x + 4) = 15. Round to the nearest thousandth.<br> PS: x+4 is the power for 2

lilavasa [31]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

Let's solve for x ~

$\qquad \sf \dashrightarrow \: 5(2x + 4) = 15$

$\qquad \sf \dashrightarrow \: (5 \times 2x) + (5 \times 4) = 15$

$\qquad \sf \dashrightarrow \: 10x + 20 = 15$

$\qquad \sf \dashrightarrow \: 10x + 20 - 20 = 15 - 20$

$\qquad \sf \dashrightarrow \: 10x = - 5$

$\qquad \sf \dashrightarrow \: \dfrac{10x}{10} = \dfrac{ - 5}{10}$

$\qquad \sf \dashrightarrow \: x = - \dfrac{ 1}{2}$

hence value of x is - 1/2

3 0

1 year ago

HELP FAST PLEASEE<br> 3x + 5 = -16

kobusy [5.1K]

-7
The answer is -7

..

5 0

2 years ago

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Erin has n books. She sold half of her books and then bought 16 more. Which expression represents the number of books Erin has?

Margarita [4]

Answer:

n÷2+16

Step-by-step explanation:

8 0

2 years ago

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$140 for 18ft squared=?????

andrew11 [14]

Unit rate means how much does it cost for 1 unit
140 for 18ft^2

divide by 18
140/18=7.77777777777777
so the unit rate is $7.78 per square foot

8 0

2 years ago

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