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3 years ago

If x = 4, find the perimeter. 13x - 3

Mathematics

1 answer:

zysi [14]3 years ago

5 0

Answer:

Step-by-step explanation:

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Help!! Anyone know how to do this?

Oksanka [162]

Answer:

42.5

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

The total surface area of rectangular solid is 130 cm.If the solid is 7 cm long and 5 cm wide,calculate the height.

ivolga24 [154]

Answer:

2.5cm

Please vote for Brainliest and I hope this helps!

3 0

2 years ago

Which choices are equivalent to the expression below? Check all that apply.<br> 5 square root 3

blsea [12.9K]

Option A: $\sqrt{75}$

Option C: $\sqrt{15} \cdot \sqrt{5}$

Option F: $\sqrt{25} \cdot \sqrt{3}$

Solution:

Given expression is $5 \sqrt{3}$ .

Option A: $\sqrt{75}$

$\sqrt{75}=\sqrt{25\times3}$

$=\sqrt{5^2\times3}$

$=5\sqrt{3}$

Hence $\sqrt{75}$ is equivalent expression of $5 \sqrt{3}$ .

Option B: $\sqrt{45}$

$\sqrt{45}=\sqrt{9\times5}$

$=\sqrt{3^2\times5}$

$=3\sqrt{5}$

Hence $\sqrt{45}$ is not equivalent expression of $5 \sqrt{3}$ .

Option C: $\sqrt{15} \cdot \sqrt{5}$

$\sqrt{15} \cdot \sqrt{5}=\sqrt{15\times5}$

$=\sqrt{75}$

$=5\sqrt{3}$ (proved in option A)

Hence $\sqrt{15} \cdot \sqrt{5}$ is equivalent expression of $5 \sqrt{3}$ .

Option D: $\sqrt{3} \cdot \sqrt{5}$

$\sqrt{3} \cdot \sqrt{5}=\sqrt{3\times5}$

$=\sqrt{15}$

Hence $\sqrt{3} \cdot \sqrt{5}$ is not equivalent expression of $5 \sqrt{3}$ .

Option E: 75

75 is a whole number.

Hence 75 is not equivalent expression of $5 \sqrt{3}$ .

Option F: $\sqrt{25} \cdot \sqrt{3}$

$\sqrt{25} \cdot \sqrt{3}=\sqrt{25\times3}$

$=\sqrt{75}$

$=5\sqrt{3}$ (proved in option A)

Hence $\sqrt{25} \cdot \sqrt{3}$ is equivalent expression of $5 \sqrt{3}$ .

Therefore, $\sqrt{75},\ \ \sqrt{15} \cdot \sqrt{5}, \ \ \sqrt{25} \cdot \sqrt{3}$ are all equivalent expressions of $5 \sqrt{3}$ .

6 0

3 years ago

To win at LOTTO in a certain state, one must correctly select 6 numbers from a collection of 55numbers (one through 55.) The ord

Romashka [77]

Answer:

Number of different selection = 50C6

Number of different selection = 50 x 49 x 48 x 47 x 46 x 45

Number of different selection = 15 890 700

Step-by-step explanation:

7 0

3 years ago

Describe the shape resulting from the cross section of the shape.

Ronch [10]

Answer:

A tilted circle, or an oval.

Step-by-step explanation:

Just to let you know, when I studied cross sections, they were the most annoying things I have ever studied in math, so here is my go at this:

Although I am not sure, I think the cross section is an oval. This is because the plane that cuts the cone is a little tilted, providing an oval (or a tilted circle.)

Hope that this helps you!

7 0

3 years ago