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3 years ago

A Kite of Area 255 m2 has one diagonal of length 9m . find the length of the other diagonal

Mathematics

1 answer:

Bas_tet [7]3 years ago

6 0

$\\ \rm\longmapsto Area=255m^2$

$\\ \rm\longmapsto LB=255$

$\\ \rm\longmapsto 9L=255$

$\\ \rm\longmapsto L=\dfrac{255}{9}$

$\\ \rm\longmapsto L=28.3m$

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3 years ago

What is 5 + 2(3x + 4)+ x?

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Answer:

What is 5 + 2(3x + 4)+ x?

the answer is 7x + 13

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3 years ago

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At the county fair, the Baxter family bought 6 hot dogs and 4 juice drinks for $14.70. The Farley family bought 3 hot dogs and 4

photoshop1234 [79]

Answer:

A hot dog would cost 1.75 and the juice would cost 1.05

Step-by-step explanation:

In order to find this, set x as the number of hot dogs and y as the number of juice drinks. This allows us to set up the following equations for each situation.

6x + 4y = 14.70

3x + 4y = 9.45

Now we can mutliply the second equation by -2 to get the x values to cancel out.

6x + 4y = 14.70

-6x - 8y = -18.90

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-4y = -4.20

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Now that we have this, we can plug it into either equation to find the cost of a hot dog.

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6 0

3 years ago

Sue wrote a doubles fact. It has a sum less than 10 and greater than 4. The addends are each less than 5. What fact might she ha

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3 years ago

The diagram shows a solid shape.

Stolb23 [73]

Answer:

$756\pi$

Solution,

Volume of cone=270 pi cm^3

$\frac{1}{3} \pi \: {r}^{2} = 270\pi \\ or \: {r}^{2} \times 10 = 270 \times 3 \\ or \: {r}^{2} \times 10 = 810 \\ or \: {r}^{2} = \frac{810}{10} \\ or \: {r}^{2} = 81 \\ or \: r = \sqrt{81} \\ or \: r = \sqrt{ {9}^{2} } \\ r = 9 \: cm$

Volume of semisphere:

$\frac{2}{3} \pi {r}^{3} \\ = \: \frac{2}{3} \times \pi \times 9 \times 9 \times 9 \\ = 486\pi$

Total:

$270\pi + 486\pi \\ = 756\pi$

hope this helps...

Good luck on your assignment..

6 0

3 years ago