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Eva8 [605]
3 years ago
15

Can someone help me solve this?

Mathematics
1 answer:
katen-ka-za [31]3 years ago
5 0
See the pic for the answer.  You just multiply each term on the left by each term on the top.  The coefficient is just the number in front of an unknown.

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If CDE ~ GDF, find ED
qaws [65]

Answer:

10

Step-by-step explanation:

\triangle CDE \sim \triangle GDF.. (given) \\\\\therefore \frac{CD}{GD} =\frac{DE}{DF}.. (csst) \\\\\therefore  \frac{15}{x+3} =\frac{3x+1}{4}\\\\ \therefore   \: 15 \times 4 = (x + 3)(3x + 1) \\  \\ \therefore   \: 60 = 3 {x}^{2}  + x + 9x + 3 \\  \\ \therefore  3 {x}^{2}  + 10x + 3 - 60 = 0 \\ \therefore  3 {x}^{2}  + 10x  - 57 = 0 \\ \therefore  3 {x}^{2}  + 19x - 9x  - 57 = 0 \\ \therefore   \: x(3x + 19) - 3(3x + 19) = 0 \\\therefore   \:  (3x + 19)(x - 3) = 0 \\ \therefore   \: 3x + 19 = 0 \:  \: or \:  \: x - 3 = 0 \\  \therefore   \: x =  -  \frac{19}{3}  \:  \: or \:  \: x = 3 \\  \because \: x \: can \: not \: be \:  - ve \\ \therefore   \: x = 3 \\ ED = 3x + 1 = 3 \times 3 + 1  \\ \huge \red{ \boxed{ ED= 10}}

7 0
3 years ago
The calculated average of a data set best describes which of the following
sasho [114]
The calculated average of a data set best describes A: Mean.
3 0
3 years ago
Is this function linear or nonlinear? *
Bogdan [553]

Answer:

It's linear

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Vicky grew 15 flowers with 3 seed packets. How many seed packets does Vicky need to have a total of 20 flowers in her garden?
asambeis [7]

Answer:

definitely 4

Step-by-step explanation:

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7 0
3 years ago
Please help me!!!!!!!!
sergejj [24]

Answer:

Angle 1: 105

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Step-by-step explanation:

You know 2 is 75 because both lines are parallel.

To get 1 you subtract 75 from 180.

6 0
2 years ago
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