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3 years ago

14

10 x 2 tens=_ Tens = ___

2 answers:

motikmotik3 years ago

4 0

10 × 2 tens = 20 tens = 200

laila [671]3 years ago

4 0

Hello there!

Just to get the idea of it, work it out in number form as 10 x 20 = 200.
Then simply place it in.

10 x 2 tens = 20 tens = 200.

Hope This Helps You!
Good Luck :)

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Diego takes more than twice as long to assemble a computer as Kenneth does. Kenneth assembles a computer in 24 minutes. If Diego

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3 years ago

Which two points on the number line are opposites? A number line going from negative 2 to positive 2 in increments of 1. There a

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Points B and C are opposite

Step-by-step explanation:

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3 years ago

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Sam scored 43 48 and 42 points on 3 test how many points should he get on the fourth test to get in average score of 50

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3 years ago

Given right triangle ABCABC with altitude \overline{BD} BD drawn to hypotenuse ACAC. If BC=10BC=10 and DC=5,DC=5, what is the le

Helen [10]

Answer: $\overline{AC}=$ 12.5

Step-by-step explanation: The triangle ABC and its altitude $\overline{BD}$ is represented in the figure below.

<u>Altitude</u> is a segment of line that link a vertex and the opposite side, forming a right angle.

So, because of $\overline{BD}$ , now we have two similar triangles, which means that ratios of corresponding sides are equal:

$\frac{\overline{BD}}{\overline{BC}} =\frac{\overline{AD}}{\overline{BD}}$

$\overline{BD}^{2}=\overline{BC}.\overline{AD}$ (1)

This is always true for a right triangle and a altitude drawn to the hypotenuse.

Triangle BDC is also right triangle. So, we can use Pythagorean theorem to determine the missing side.

$\overline{BC}^{2}=\overline{CD}^{2}+\overline{BD}^{2}$

$\overline{BD}^{2}=\overline{BC}^{2}-\overline{CD}^{2}$ (2)

Substituting (2) into (1):

$\overline{BC}^{2}-\overline{CD}^{2}=\overline{BC}.\overline{AD}$

We want to find f, so:

$\overline{AD}=\frac{\overline{BC}^{2}-\overline{CD}^{2}}{\overline{BC}}$

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f = 7.5

The length of $\overline{AC}$ is

$\overline{AC}=f+5$

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$\overline{AC}=12.5$

The length of the hypotenuse of triangle ABC is 12.5 units.

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3 years ago

Read 2 more answers

2 a - 8 < 4 + 8 a < - a - 5

Leokris [45]

Answer:

$2a - 8 < 4 + 8a < - a - 5 \\ = (2 + 8 + 1)a < ( 8 + 4 - 5) \\ = 9a < 7 \\ a < \frac{7}{9}$

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2 years ago