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3 years ago

Would the missing value be 12cm?

Mathematics

1 answer:

nika2105 [10]3 years ago

7 0

Answer: The missing value, y = 24

Step-by-step explanation:

The triangles are similar, so the sides are proportional.

The length of side BD is 10. The segment AD is also 10. Add them to get the length of side AB.

DE is 12

12:10 = y:20 . 20/10 = 2 2×12 = 24

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Burka [1]

Answer:

8/625

Step-by-step explanation:

bc i guessed and its says 8/625

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3 years ago

Chapter 7 of the Jiuzhang suanshu presents a problem of two linear equations involving acres of land and their respective prices

djyliett [7]

Answer: 33.041666

Step-by-step explanation:

Given: The translated equation : $300x+y = 10000$

To find the value of x if y = 87.5, we need to substitute the value of y in the given translated equation, we will get

$300x+87.5 = 10000$

Subtract 87.5 from both the sides , we get

$300x=9912.5$

Now, divide 300 on both the sides, we get

$x=\frac{9912.5}{300}\\\\\Rightarrow x=33.041666666$

3 1

3 years ago

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How many solutions does the system of equations have?

omeli [17]

Usa el icono de edición para fijar, añadir o eliminar clips.

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3 years ago

Rewrite the equation below so that it does not have fractions four -4/9 times equals two over three do not use decimals in your

Rama09 [41]

The equation is 36 - 4x = 6.

Solution:

To write the equation without fraction.

$$4-\frac{4}{9} x=\frac{2}{3}$

$$\frac{4}{1} -\frac{4}{9} x=\frac{2}{3}$

The denominators must be same to add/subtract the fractions.

LCM of 1, 9 and 3 = 9.

Multiply first term by $\frac{9}{9}$ and $\frac{2}{3}$ by $\frac{3}{3}$ to make the denominator same.

$$\frac{4\times9}{1\times9} -\frac{4}{9} x=\frac{2\times3}{3\times3}$

$$\frac{36}{9} -\frac{4}{9} x=\frac{6}{9}$

$$\frac{36-4x}{9} =\frac{6}{9}$

Multiply by 9 on both sides.

$$\frac{36-4x}{9}\times9 =\frac{6}{9}\times9$

Both 9 in the numerator and denominator get canceled.

36 - 4x = 6

This term does not have fraction.

Hence the equation is 36 - 4x = 6.

6 0

3 years ago

Multiply (2.5 x 10 ^-8) ( 9x10 ^ - 10 ) Express answer in scientific notation

earnstyle [38]

2.25 x 10^-17. Because it's negative you move the decimal to the left. So 2.5 x 10^-8 is .000000025 and 9 x 10^-10 is .0000000009.

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3 years ago

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