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2 years ago

This is timed pleaseeeeee hurry!!!!!! see picture

Mathematics

2 answers:

KIM [24]2 years ago

5 0

I think it’s c I’m not quite sure try Desmos for graphing calculator

astra-53 [7]2 years ago

4 0

Im pretty sure the answer is c.

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The sum of two rational numbers will always be

Ostrovityanka [42]

The sum of two rational numbers will always be <u>rational</u>

<u></u>

$\frac{a}{b} +\frac{c}{d} =\frac{ad+bc}{bd}$ , therefore it will always be rational

7 0

3 years ago

Describe the sequence of transformations that demonstrates the congruence between triangle ABC and triangle A´B´C´.

Shtirlitz [24]

Reflecting over the x axis means to perform the following tranformation:

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

So, you maintain the x coordinate, and change the sign of the y coordinate. The vertices become

$A=(-4, 4)\to \hat{A} = (-4,-4),\quad B=(-2, 3)\to \hat{B} = (-2,-3),\quad C=(0, 7) \to \hat{C}=(0,-7)$

Translating 3 units to the left means to perform the following transformation:

$(x,y) \to (x-3,y)$

So, you maintain the y coordinate, and decrease the x coordinate by 3. The vertices become

$\hat{A} = (-4,-4) \to (-7,-4),\quad \hat{B} = (-2,-3)\to (-5,-3),\quad \hat{C}=(0,-7)\to (-3,-7)$

So, as you can see, after these two transformation, the vertices A, B and C become A', B' and C'.

4 0

3 years ago

When designing a study to determine this population proportion, what is the minimum number of drivers you would need to survey t

Vlada [557]

Answer: 601

Step-by-step explanation:

The formula to find the minimum sample size(n) , if the prior population proportion is unknown:

$n=0.25(\dfrac{z^c}{E})^2$ , where E = margin of error , $z^c$ = critical z-value for confidence level c.

Given : E = 0.04

Z-value for 95% confidence = 1.96

So, the minimum sample size required = $0.25(\dfrac{1.96}{0.04})^2=0.25(49)^2$

$= 0.25\times 2401=600.25\approx601$

Hence, the minimum sample size required = 601

6 0

2 years ago

Which point on the number line represents the number that can be added to-3

vova2212 [387]

Answer: 3

Step-by-step explanation: This is because the 2 numbers are opposites, which cancel each other out, going back to zero.

8 0

3 years ago

Read 2 more answers

1. A package contains 7 red candies, 4 blue candies, and 3 green candies. Three candies are drawn

erastovalidia [21]

Answer:

the answer i got was 0.214

6 0

3 years ago