help ill mark brainliest if right ​

Answer:

The last one.

Step-by-step explanation:

2(x + 3)

= 2*x + 2*3

= 2x + 6.

Answer:

5×4+9

Step-by-step explanation:

The product of something means to multiply, so you would multiply 5 and 4 together.

Then you would add 9 to that.

Answer:

1 hour and 40 minutes

Step-by-step explanation:

60/24 = 2.5

40 x 2.5 = 100 minutes

100 minutes =  1 hour and 40 minutes.

i am highly sorry but there is no graph for me to help you with on this site :(

but to help you the X line always comes first for example the (-5,2) the -5 would be on the X line. I really hope that this help. :)

The angle that the right side of the roof makes with the base of the roof to the nearest degree is 32 degrees.

We know that a triangle is a three sided figure. The question shows us that the left side of the triangular roof is  8.0 m long and makes an angle of 70 degrees with the base of the roof. This base has a length of  13.6 m.

We can now make use of the cosine rule;

b^2 = a^2 + c^2 - 2ac cos B

a = 13.6

b = ?

c = 8

B = 70 degrees

Now;

b = √(13.6)^2 + (8)^2 - 2(13.6 * 8) cos 70

b = √184.96 + 64 - 2(108.8) * 0.3420

b = √184.96 + 64 - 44.42

b = 14.3

By the use of the sine rule;

b/sinB = c/sinC

14.3/sin70 = 8/sinC

14.3 * sinC = 8 * sin70

sinC = 8 * sin70/14.3

C = 32 degrees

The angle that the right side of the roof makes with the base of the roof to the nearest degree is 32 degrees.

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Answer:

y-intercept : 3

x-intercepts are 1 and 2

Vertex is at (2,-1)

Axis of symmetry is at x = 2

Step-by-step explanation:

See attached graph.

The equation y = x² – 4x + 3 represents a parabola

y-intercept at is at B(0,3); y-intercept is 3

x-intercept points at C(1,0) and D(3,0) so x-intercepts are 1 and 3

The vertex is the lowest point on this parabola (2-1)

Axis of symmetry is a line passing through the vertex and dividing the parabola into two equal halves. This is the vertical line x = 2

The probability that either event will occur is 0.83

From the question, we have the following parameters that can be used in our computation:

Event A = 18

Event B = 12

Other Events = 6

Using the above as a guide, we have the following:

Total = A + B + C

So, we have

Total = 18 + 12 + 6

Evaluate

Total = 36

So, we have

P(A) = 18/36

P(B) = 12/36

For either events, we have

P(A or B) = 30/36 = 0.83

Hence, the probability that either event will occur is 0.83

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Answer:

second one!

Step-by-step explanation:

Answer:

44.8 miles

Step-by-step explanation:

We can use ratios to solve

33.6 miles      x miles  

--------------   = --------------

.75 hours       1 hours

Using cross products

33.6 * 1 = .75x

Divide each side by .75

33.6 / .75 =x

44.8 miles

Answer:

horizontal line

Step-by-step explanation:

The y- coordinates of both points are 5

This indicates the line is horizontal and parallel to the x- axis with equation

y = 5

Anjali needs to travel for 3.5 hours before she and Jasmine are 380 km apart.

Let's break down the problem step by step. Jasmine traveled towards the dump at an average speed of 40 km/h. Anjali left two hours later,

so Jasmine had a head start of 40 km/h * 2 hours = 80 km.

Since Jasmine and Anjali are traveling in opposite directions,

their combined speed is 40 km/h + 60 km/h = 100 km/h.

To find the time it takes for them to be 380 km apart, we divide the distance by their combined speed: 380 km / 100 km/h = 3.8 hours.

However, we need to account for the head start Jasmine had.

Anjali needs to catch up to Jasmine's initial 80 km before they start moving apart.

Anjali's speed is 60 km/h, so the time it takes for her to catch up is 80 km / 60 km/h = 1.33 hours.

Adding the time it takes to catch up to the time it takes for them to be 380 km apart

we get 1.33 hours + 3.8 hours = 5.13 hours. Rounded to the nearest half hour, Anjali needs to travel for approximately 3.5 hours before they are 380 km apart.

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(i) The function that predicts your expected payroll for the day is,

For first person; y = $50 + $10.50x

For second person; y = $60 + $10.50x

Where, y is total amount and x is number of working hours.

(ii) In Wednesday; The amount expect to pay your employees is,

For first person;

⇒ y = $102.50

For second person;

⇒ y = $112.50

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The first employee scheduled to work next Wednesday makes $10.50 per hour and averages $50 per day for commission.

And, The other person that is scheduled earns $10.50 per hour and averages $60 per day for commission.

Let total amount earn = y

And, Number of working hours = x

Hence, We can formulate;

The function that predicts your expected payroll for the day is,

For first person;

⇒ y = $50 + $10.50x

For second person;

⇒ y = $60 + $10.50x

And, For 5 hours, the amount is,

For first person;

⇒ y = $50 + $10.50x

⇒ y = 50 + 10.50 × 5

⇒ y = 50 + 52.50

⇒ y = $102.50

For second person;

⇒ y = $60 + $10.50x

⇒ y = 60 + 10.50 × 5

⇒ y = 60 + 52.50

⇒ y = $112.50

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Answer:

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The expected value of your bet is $10.58 (rounded to the nearest cent).

Let's break this down:

There are 52 cards in a standard deck, and 12 of them are face cards (4 jacks, 4 queens, and 4 kings). Therefore, the probability of drawing a face card on any given draw is 12/52 or 3/13. When the first card is drawn, there will be 51 cards left in the deck, 11 of which are face cards.

Therefore, the probability of drawing a non-face card on the second draw is 40/51.

The probability of both events happening (drawing two non-face cards in succession) is the product of their individual probabilities:

37/52 × 40/51 ≈ 0.5646.

The probability of the opposite event (drawing at least one face card) is therefore 1 − 0.5646 ≈ 0.4354.

If your friend draws two non-face cards in succession, you pay him $30.

The expected value of that outcome is −$16.94 (the probability of the event multiplied by the amount you pay:

0.5646 × −$30).

If your friend doesn't draw two non-face cards in succession, he pays you $50.

The expected value of that outcome is $21.77 (the probability of the event multiplied by the amount you receive: 0.4354 × $50).

The expected value of the entire bet is the sum of these two expected values: −$16.94 + $21.77 = $4.83. Therefore, your expected profit is $4.83 per bet. Since you're making one bet, your expected value is $4.83. However, this answer isn't quite correct because it doesn't account for the initial $50 you pay to enter the bet. Therefore, you need to subtract that $50 from the expected value to get the net expected value of the bet:

$4.83 − $50 = −$45.17.

This means that, on average, you lose $45.17 per bet. However, the question asks for the expected value of your bet, not the expected value of your profit or loss.

To get the expected value of the bet, you need to add back in the initial $50 that you paid to enter the bet. Therefore, the expected value of your bet is −$45.17 + $50 = $4.83 (rounded to the nearest cent).

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Answer:

2 < -14

Step-by-step explanation:

I hope this helps!

Vertical angles : 8 and 10

Linear pair : 9 and 10

Adjacent angles : 7 and 10

Answer: standard form  f(x)=8x

Step-by- step explanation:

True. With a sample size of 100 and a p of .5, the sampling distribution of the sample proportion will approximate a normal distribution.

This is because of the central limit theorem, which states that with a sufficiently large sample size, the sampling distribution of the sample proportion will approach a normal distribution regardless of the shape of the population distribution.

The central limit theorem is an important concept in statistics that allows us to make inferences about population parameters based on sample statistics. It states that with a large enough sample size, the sampling distribution of the sample mean or proportion will approximate a normal distribution, even if the underlying population distribution is not normal. In this case, with a sample size of 100 and a p of .5, we have a sufficiently large sample size to apply the central limit theorem and approximate a normal distribution. Conclusion: In conclusion, the statement that the sampling distribution of the sample proportion will approximate a normal distribution with a sample size of 100 and a p of .5 is true. The central limit theorem is a powerful tool that allows us to make inferences about population parameters with confidence, even if the underlying population distribution is not known.

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The equations are solved to w = 0 and z = -2. Option B

From the information given, we have the simultaneous equations as

3w-4z=8

2w+3z=-6

Make w the subject from equation 1

w = 8 + 4z/3

Substitute the value into equation 2, we have that;

2(8 + 4z/3) + 3z = -6

expand the bracket, we get;

16 + 8z/3 + 3z = -6

find the LCM, we have;

16 + 8z + 9z/3 = -6

cross multiply

16 + 17z = - 18

add the values

19z = -34

Make 'z' the subject

z =-2

Substitute the value

3w - 4z = 8

3w = 8 - 8

w = 0

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The three (3) possible combinations are

Alex should 20 hats and 20 scarves

Let the number of scarves be x and y be the number of hats

He can make at most 20 hats and 30 scarves, but no more than 40 items altogether

x ≤ 20

y ≤ 30

x + y ≤ 40 (in time of market)

x + y ≥ 25

The possible combinations are

He should choose the third option x = 20, y = 20 this allows him to take more products to the show

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\(x-8.2=-9.09\\\\\implies x = -9.09 +8.2 =-0.89\)

x = -0.89

Step-by-step explanation:

when subtracting a positive number to a negative it will always be negative or atleast 0. It is like a number line, when subtracting on a number line, you always go left, which is also why its negative.

How I solved it: (just another way to solve this)

9.10-8.20=0.89

since the 9.10 was actually a negative(-9.10), it would make 0.89 negative, making it -0.89.

Answer:

RS 4950

Step-by-step explanation:

50×110= 5500

10% of 5500= 550

5500-550= 4950

Answer:T=(X*520N)+650

Step-by-step explanation:

Answer:

14/3 cm

Step-by-step explanation:

The lengths of sides of a figure get multiplied by the dilation factor.  The dilated square has side length 2 x 7/3 = 14/3.

Answer:

Step-by-step explanation:

Plug (-1,5) into the equation y = 2x+7

5 = 2(-1)+7

5 = -2+7

5 = 5

The equation holds true, so (-1,5) is a solution to y = 2x+7

(a) The answer of the question "What is the interval's margin of error (Round your answers to 3 decimal places.)" to part (b) is B = 0.978.

(b) margin of error = 1.96*(10/sqrt(385)) = 0.978

(a) To find the sample size needed to construct a 95% confidence interval with a margin of error of 1, we use the formula:

margin of error = z*(standard deviation/sqrt(sample size))

where z is the critical value from the standard normal distribution for a 95% confidence level, which is approximately 1.96.

Plugging in the given values and solving for the sample size, we get:

\(1 = 1.96*(10/sqrt(sample size))\)

\(sqrt(sample size) = 1.96*10/1\)

\(sample size = (1.96*10)^2 = 384.16\)

Rounding up to the nearest whole number, we need a sample size of 385.

Therefore, the answer to part (a) is 385.

(b) To calculate the 95% confidence interval for the population mean given a sample size of 385 and a sample mean of 295, we use the same formula as above with the values we have:

1 = 1.96*(10/sqrt(385))

Solving for the margin of error, we get:

margin of error = 1.96*(10/sqrt(385)) = 0.978

The 95% confidence interval for the population mean is then:

295 - 0.978 to 295 + 0.978

or

(294.022, 295.978)

Therefore, the answer to part (b) is B = 0.978.

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When a scatterplot is created from a table of values, the statement that is correct is A.It is possible for two points to have the same x-coordinate and the same y-coordinate.

Scatter plots in mathematics can be considered as the graphs that helps in the establishment of the relationship between two variables in a data-set.

It shoud be noted that this represents data points which can be represented on the two-dimensional plane or on a Cartesian system however there are two variables whereby the independent variable or attribute is plotted on the X-axis,  and the other is plotted on the Y-axis.

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Solution

We have the following function given:

For this case we need to interchange x by y and we have:

And we need to solve for x and we have:

Solving for y we got:

Answer:

B

Step-by-step explanation: