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3 years ago

Which of the following relationships represents a function?

Mathematics

2 answers:

rjkz [21]3 years ago

6 0

Answer:

A. (-3,4), (6,2), (-7,1), (2,2)

Step-by-step explanation:

Functions cannot have the x repeating. All the other answers have one of their x-values repeating, so they are not functions.

Mkey [24]3 years ago

5 0

Which of the following relationships represents a function?
Answer: B

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In the diagram below, ΔABC ∼ ΔDEF. If AC=18,BC=24. and DF=12, find EF

ValentinkaMS [17]

Answer:

Step-by-step explanation:

similar triangles.

that means there is one common factor to transform the lengths of all lines from one triangle to the other.

it looks to me DF is the longest side in DEF, and that would make it associated to BC of ABC.

so, the factor is then

BC = DF×f

24 = 12×f

=> f = 2

so, EF then is associated to AC.

AC = EF × f

18 = EF × 2

EF = 18/2 = 9

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3 years ago

The area of a trampoline is about 1.8 x 10' square inches. Write this number in standard form. Then represent the area of the tr

Anni [7]

<h3>Solution</h3>

1.8 × 10⁴

= 18 × 10³

= 180 × 10²

= 1800 × 10

= 18000

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2 years ago

Two types of plastic are suitable for an electronics component manufacturer to use. The breaking strength of this plastic is imp

Allushta [10]

Answer:

(a) Null Hypothesis (H₀) = Mean of x₁ > Mean of x₂

Alternative Hypothesis (H₁) = Mean of x₁ ≠ Mean of x₂

(b) We will use here t-test for two sample means which is given by,

$[tex]t = \frac{\bar_{x_{1}}-\bar_{x_{2}}}{\sqrt{s^2(\frac{1}{n_{1}}+\frac{1}{n_{2}} )}}$ [/tex]

Putting all values we get, t = 17.5 with 20 degree of freedom

At α = 0.05

p-value = 95% Confidence Interval for the Difference ( 6.6068 , 8.3932 )

8 0

3 years ago

What is the simplified form of the expression start root start fraction 1 over 196 end fraction end root?

Dominik [7]

$\sqrt{\dfrac{1}{196}}=\sqrt{\dfrac{1}{14^{2}}}=\dfrac{1}{14}$

8 0

3 years ago

Read 2 more answers

Solve by any method (graphing, substitution or linear combination)

Lostsunrise [7]

Answer:

b) (5, -3)

Step-by-step explanation:

The given equations are;

$y=x-8...(1)$

$2x+3y=1...(2)$

I prefer using substitution because of the first equation.

Put equation (1) into equation (2) to obtain;

$2x+3(x-8)=1$

We expand the parenthesis to obtain;

$2x+3x-24=1$

Group similar terms to get;

$2x+3x=1+24$

Simplify

$5x=25$

Divide through by 5;

$x=\frac{25}{5}$

$\Rightarrow x=5$

Put $x=5$ into equation (1) to get;

$y=5-8$

$\Rightarrow y=-3$

The solution is (5,-3).

The correct answer is B

8 0

3 years ago