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hoa [83]
4 years ago
7

What is the value of x in a & b?

Mathematics
1 answer:
lina2011 [118]4 years ago
3 0

Answer:

a. x = 9

b. x = 3.6

Step-by-step explanation:

a. By Basic proportionality theorem:

AB/BD = AC/CE

4/4 = x/9

1 = x/9

9 = x

x = 9

b.

In \: \triangle ABC \: \& \: \triangle EDF\\\angle B \cong \angle D....(given) \\\angle C \cong \angle F.....(given) \\\therefore \triangle ABC \: \sim \: \triangle EDF.. (AA\: POSTULATE) \\\therefore \frac{AB}{ED} = \frac{BC}{DF} ...(csst) \\\therefore \frac{2}{5} = \frac{x}{9}\\\therefore x = \frac{2\times 9}{5} \\\therefore x = \frac{18}{5} \\\huge \red{\boxed {\therefore x = 3.6}} \\

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What are some of the basic things about domain and range functions I should know I have midterms this Monday
blagie [28]

Answer:

Domain is all the possible x-values a function can have. For example, for the function f(x) = √x, the domain would be x ≥ 0, because you cannot square a negative number. Another example is the function g(x) = 2x. The domain of g(x) would be all real numbers, or ℝ.

Range is all possible y-values a function can have. For example, for the function f(x) = √x, the range would be f(x) ≥ 0, since the square root of a number will be positive. Another example is h(x) = x². The square of x will  not be negative, so the range of h(x) will be h(x) ≥ 0.

For functions of the parent family y = a(x - h)² + k, the domain and range will always be⇒ Domain: all real numbers, and Range: y ≥ k

For functions of the parent family y = a(x - h)³ + k, the domain and range will always be all real numbers.

For functions of the parent family y = a√(x - h) + k, the domain and range will always be⇒ Domain: x ≥ h, and Range: y ≥ k

For functions of the parent family y = a∛(x - h) + k, the domain and range will  always be all real numbers.

5 0
4 years ago
Triangle RST has the vertices R(2, 3), S(-2, 1), and T(-1, 5). What are the coordinates after the two transformations: Reflectio
SCORPION-xisa [38]

Answer:

R''(2,-3), S''(-2,-1) and T'(-1,-5).

Step-by-step explanation:

The given vertices of triangle are R(2, 3), S(-2, 1), and T(-1, 5).

Reflection over the y-axis:

(x,y)\to (-x,y)

Using this rule, the vertices after reflection are

R(2,3)\to R'(-2,3)

S(-2,1)\to S'(2,1)

T(-1,5)\to T'(1,5)

Rotation at 180 degrees around the origin.

(x,y)\to (-x,-y)

Using this rule, the vertices after reflection are

R'(-2,3)\to R''(2,-3)

S'(2,1)\to S''(-2,-1)

T'(1,5)\to T''(-1,-5)

Therefore, the coordinates of vertices after the two transformations are R''(2,-3), S''(-2,-1) and T'(-1,-5).

7 0
4 years ago
I need help badly :[
n200080 [17]
535.25 is the answer bc you add the deposits and subtract the withdrawals
4 0
3 years ago
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What is the product of 16x48?
Elis [28]
768 because 6x8 = 48 the 8 drop Down to the answer and the 4 on top of 1 and multiply 1x8= 8+1 =9 so the 9 drop down to the answer. Now that is fake because you need to multiply 4x6 and 4x1 so 4x6 is 24 below the 8 add a 0 and go 1 move to the left and put 4 and 2 on top of 1 now 4x1 is 4+1 is 5 and put 5 on the left of 4 and the final step is add 98+540=768 so 768 is your real answer.
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3 years ago
Accidentally selected an answer lol<br><br> what is the correct answer
rosijanka [135]

You picked the correct answer.

4 0
4 years ago
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