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3 years ago

Is (-2,7), (6,2), (-2,-3), 0,9) a function

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

5 0

No. Because -2 has two outputs. To be a function each input have to have one output. I.E

2,3 4,5 6,7 8,9 are functions.

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What is the value of x and the length of segment DE?

Mandarinka [93]

Answer:

Part 1) $x=6.6\ units$

Part 2) $DE=16.2\ units$

Step-by-step explanation:

Part 1) Find the value of x

we know that

Triangles CDF and FDE are similar

therefore

The ratio of its corresponding sides is proportional and its corresponding angles are congruent

$CD/FD=FD/DE$

$\frac{5}{9}=\frac{9}{2x+3} \\ \\5*(2x+3)=9*9\\ \\10x+15=81\\ \\10x= 81-15\\ \\10x=66\\ \\ x=6.6\ units$

Part 2) Find the length of DE

$DE=2x+3$

substitute the value of x

$DE=2(6.6)+3=16.2\ units$

8 0

3 years ago

Read 2 more answers

In a New York Times/CBS News Poll, respondents were asked if it should be legal or illegal to send a text message while driving.

AnnZ [28]

Answer: $\dfrac2{201}$

Step-by-step explanation:

Number of persons said it is legal to text while driving = 8

Number of persons said it is illegal to text while driving = 804

Total persons sampled = 804+8 = 812

Since probability = $\dfrac{\text{favorable outcomes}}{\text{Total outcomes}}$

The probability of randomly selecting someone who believes it should be legal to text while driving = $\dfrac{8}{804}=\dfrac2{201}$

Required probability = $\dfrac2{201}$

7 0

3 years ago

Help please!!!!

wolverine [178]

Answer:

2nd statement is false

Step-by-step explanation:

3 0

3 years ago

What is 341/1000 in words

vladimir1956 [14]

Three-forty one over one thousand XD

7 0

3 years ago

Esteban paid $134.10 for 4½ sheets of plywood at the local home improvement store. What does one sheet of plywood cost? A. $28.9

Yakvenalex [24]

Answer:$29.80

Step-by-step explanation:Esteban paid $134.10 for 4½ sheets of plywood at the local home improvement store. What does one sheet of plywood cost? A. $33.53 B. $28.90 C. $29.80 D. $29.78

Esteban paid $134.10 for 4½ sheets of plywood at the local home improvement store. One sheet of plywood costs 134.10/4.5 = $29.80.

5 0

3 years ago