I need help with the attached​

Answer:

Option A

Step-by-step explanation:

We use the slope formula:

[tex]\frac{y_{2}-{y_{1}} }{x_{2} -x_{1} }[/tex]

We substitute the values given and see which option corresponds with our equation:

[tex]\frac{-4-(-6)}{-2-3}[/tex]
Option A must be correct

Answer:

{x,y}={-4,-1}

Step-by-step explanation:

Solve by Substitution :

// Solve equation [2] for the variable x

[2] 3x = 4y - 8

[2] x = 4y/3 - 8/3

// Plug this in for variable x in equation [1]

[1] 2•(4y/3-8/3) + 5y = -13

[1] 23y/3 = -23/3

[1] 23y = -23

// Solve equation [1] for the variable y

[1] 23y = - 23

[1] y = - 1

// By now we know this much :

x = 4y/3-8/3

y = -1

// Use the y value to solve for x

x = (4/3)(-1)-8/3 = -4

Solution :

{x,y} = {-4,-1}

Step-by-step explanation:

sin 2b = -.5

2b =-30°

b = -15°

cot ^2(3π/4 +15)

=cot^2(3π/4+ π/12)

=cot ^2(10π/12)

=cot^2(150°)

=2.99

Answer:

[tex]cos2\theta = -frac7{25}[/tex]

Step-by-step explanation:

By using the double angle formula for cosine [tex]cos 2\theta = 2cos^2\theta -1[/tex], replacing the value we have we get

[tex]cos 2\theta = 2 (\frac35)^2 -1 = 2\frac9{25} -1 = \frac{18}{25}-\frac{25}{25} = -\frac{7}{25}[/tex]

Answer:

-7/25

Step-by-step explanation:

Disclaimer: I'm using variable x instead of theta.

Step 1: Simplify cos 2x.

[tex] \cos(2x) = \cos {}^{2} (x) - { \sin {}^{2} (x) }^{2} [/tex]

[tex] \cos(2x) = \cos {}^{2} (x) - (1 - \cos {}^{2} (x) ) [/tex]

[tex]2 \cos {}^{2} (x) - 1[/tex]

We know that cos x= 3/5 so that means

[tex] 2(\frac{3}{5} ){}^{2} - 1 = 2( \frac{9}{25} ) - 1 = \frac{18}{25} - 1 = \frac{ - 7}{25} [/tex]

So the exact value of cos 2x=

[tex] \frac{ - 7}{25} [/tex]

There is another way to find this but this is easier.

Answer:

52

Step-by-step explanation:

answer = fifty two

x = 52

Answer:

X+90+90+128=360(total sum of quadrilateral)

X+180+128=360

X+308=360

X=360-308

X=52

Check the picture below.

Answer:

They scored 66 points

Step-by-step explanation:

Sally scored 45% out of the 100%

And there are 120 points in all.

To find the rest of the teams points you have to subtract Sally's points:

100% - 45% = 55

So to find this out you solve for x (points):

55/100 = x/120

100x = 6,600

100x = 6,600

100         100

x = 66

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Quarter hour on chemistry

Quarter hour on class 2

Quarter hour on class 3

Quarter hour on class 4

Total time....One hour

Answer:

we need the figure, where is it

Answer:

it's 7.5

Step-by-step explanation:

1/2 as a decimal is 0.5

Answer:

O 16,30,34

Step-by-step explanation:

To confirm, use Pythagorean theorem to check.

(16)² + (30)² = (34)²

256 + 900 = 1156

=> It is correct

=> Therefore, this set of three lengths will form a right triangle

Answer:

y=x-1

Step-by-step explanation:

Do the math. Just plug in x and y trust me it’s easy

Answer: y= x-1

Step-by-step explanation: y is always x minus 1 because -4 is one less than -3, 1 is one less than 2, and 4 is one less than 5.

Answer:

$0.25

Step-by-step explanation:

To find the unit rate of each orange, divide the total cost of the bag by the number of oranges in the bag:

⇒ 3.75 ÷ 15 = 0.25

Therefore, the unit rate of each orange is $0.25

Answer:

Explanation to the answer below... (Answers in the Explanation)

Step-by-step explanation:

We Know that our rule is y = [tex]y = -6(3)^{x}[/tex] , which means we can use this rule to find y from x. Since we don't know what X, is, we have to assume numbers like 1, to 7. And there is no space to write on the graph, I'll put a virtual copy of a graph.

1st Point,

[tex]y = -6(3)^{x}\\y = -6(3)^{1}\\y = -6(3)\\y = -18\\x = 1, y = -18[/tex]

2nd, point

[tex]y = -6(3)^x\\ y = -6(3)^2\\y = -6(9)\\y = -54\\x = 2, y = -54[/tex]

3rd Point

[tex]y = -6(3)^x\\y = -6(3)^3\\y = -6(27)\\y = -162\\x = 3, y = -162[/tex]

4th Point

[tex]y = -6(3)^4\\y = -6(81)\\y = -486\\x = 4, y = -486\\[/tex]

5th Point

[tex]y = -6(3)^5\\y = -6(243)\\y = -1458\\\x = 5, y = -1458[/tex]

6th Point

[tex]y = -6(3)^x\\y = -6(3)^6\\y = -6(729)\\y = -4,374\\x = 6, y = -4,374\\[/tex]

7th Point (Last Point)

[tex]y = -6(3)^x\\y = -6(3)^7\\y = -6(2,187)\\y. = -13,122\\x = 7, y = -13,122[/tex]

Let's now plot them on the Graph, the values are so big, the graph might look a little odd.

Always remember that we can continue the points infinitely, and there is no stop, The Graph is attached below...

Answer:

All of them except A

B: 10 meters in 4 seconds

C: 7.5 meters in 3 seconds

D: 5 meters in 2 seconds

Step-by-step explanation:

divided the number meters by the number seconds to get meters per second

Answer:

18 cats.

Step-by-step explanation:

5 divided by 2 is 2.5. 45 multiplied by 2.5 is 18. This is the right answer, I double checked it.

Answer:

we can do it again and again and again and again and again and again and again and again and again on Monday morning baby I'm a fan for the rest are the only way we do to help me to get to see this

Answer:

y-intercept mean the line going through

Step-by-step explanation:

it means the line going threw

Answer:

E'=[0,-8]

H'=[0,-3]

Step-by-step explanation:

Answer:

The answer is A)

Step-by-step explanation:

If we take it from the bottom left corner which it wants us to. We get the point (4,-6) if you move it 8 left and 7 up you get the new point (-4,1) Which ends up putting figure 1 inside of figure 2.

Hope this helped.

A brainliest is always appreciated

Based on the statements provided, Barry will a have a Labrador, a Collie and a Staffie at home if he has at least one dog breed.

Logical reasoning in mathematics is the process of using rational and critical thinking abilities to arrive at a conclusion about a problem.

Since Barry have at least one dog breed, the possible breeds of dogs that Barry have can be determined as follows:

Statement 1: If I have a Labrador but not a Staffie, I also have a Collie

Statement 2: I either have both a Collie and a Staffie or neither.

Statement 3: If I have a Collie, then I also have a Labrador.

Therefore, Barry will have a Labrador, a Collie and a Staffie at home if he has at least one dog breed.

Learn more about logical reasoning at: https://brainly.com/question/25175983

Answer:

43 cm!

Step-by-step explanation:

First, C = 86π

So, 86 × 3.14 (which is π) = 270.04

270 ÷ 3.14 = 86

86 ÷ 2 = 43

i hope this helps :)

Using the z-distribution, as we are working with a proportion, it is found that:

A. Yes, the data provides convincing statistical evidence that Swedish men who would be classified into group A have a lower probability of stroke than Swedish men who would be classified into group B.

B. Considering that the data provides statistical evidence, the conclusion was appropriate.

At the null hypothesis, it is tested if the proportions are the same, that is:

[tex]H_0: p_A - p_B = 0[/tex]

At the alternative hypothesis, it is tested proportion A is less than proportion B, that is:

[tex]H_1: p_A - p_B < 0[/tex]

For each sample, they are given by:

[tex]p_A = \frac{458}{9250} = 0.0495, s_A = \sqrt{\frac{0.0495(0.9505)}{9250}} = 0.0023[/tex]

[tex]p_B = \frac{543}{9250} = 0.0587, s_B = \sqrt{\frac{0.0587(0.9413)}{9250}} = 0.0024[/tex]

Hence, for the distribution of differences, we have that:

[tex]\overline{p} = p_A - p_B = 0.0495 - 0.0587 = -0.0092[/tex]

[tex]s = \sqrt{s_A^2 + s_B^2} = \sqrt{0.0023^2 + 0.0024^2} = 0.0033[/tex]

It is given by:

[tex]z = \frac{\overline{p} - p}{s}[/tex]

In which p = 0 is the value tested at the null hypothesis.

Hence:

[tex]z = \frac{\overline{p} - p}{s}[/tex]

[tex]z = \frac{-0.0092 - 0}{0.0033}[/tex]

[tex]z = -2.77[/tex]

Item a:

Considering a left-tailed test, as we are testing if the proportion is less than a value, with the standard significance level of 0.05, the critical value is of [tex]z^{\ast} = -1.645[/tex].

Since the test statistic is less than the critical value, it is found that yes, the data provides convincing statistical evidence that Swedish men who would be classified into group A have a lower probability of stroke than Swedish men who would be classified into group B.

Item b:

Considering that the data provides statistical evidence, the conclusion was appropriate.

More can be learned about the z-distribution at https://brainly.com/question/26454209

Answer:

Step-by-step explanation: it is 37 and per =45

Answer:

pick all 3 of the bottom row

Answer:

D

Step-by-step explanation:

D is the only graph where the shaded region is on 6 and less.

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