Please help me on this question

Answer:

A = (2x+1)(3x+4)

Step-by-step explanation:

Area is length × height

Answer:

=6x23+4

Step-by-step explanation:

6+6x23−2

=6+6x23+−2

Combine Like Terms:

=6+6x23+−2

=(6x23)+(6+−2)

Answer:

12 x 21

Step-by-step explanation:

hope this help -____-

p.s. can u give brainliest???

Answer:

w = 9

Step-by-step explanation:

1. Add 15 from both sides: 8w = 72

2. Divide my 8: w = 9

Answer:

the answer for this question is 9

Answer: the value of ac is 36

the value of b is 13

the two numbers that have a product of ac and a sum of a and b are 4 and 9

Don't for get to drop a heart

Answer: 4.2

Step-by-step explanation:

Answer:

i have the sAMe problem lol

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

2/8 is 1/4 when simplified. 1/2 is bigger than 1/4.

Answer:

1. 4x=16+12

2. 4x=28

3. 4x over 4=28 over 4

4. 4 is cancelled by 4 and x will remainder =7

5. x=7

that's it good luck

Answer:

it should be 44.91

Step-by-step explanation:

4 bars - 19.96

19.96/4 = 4.99

4.99 = 1 bar of chocolate

4.99*9 = 44.91

The amount that she will pay for 9 bars of chocolate will be R 44.91.

The rate is the ratio of the amount of something to the unit. For example - If the speed of the car is 20 km/h it means the car travels 20 km in one hour.

Zandi pays R19.96 for 4 bars of chocolate. Then the rate of each bar of chocolate is calculated as,

Rate = 19.96 / 4

Rate = R 4.99 per bar of chocolate

The amount that she will pay for 9 bars will be given as,

Amount = 9 x Rate

Amount = 9 x R 4.99

Amount = R 44.91​

The amount that she will pay for 9 bars of chocolate will be R 44.91.

More about the rate link is given below.

https://brainly.com/question/14731228

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Answer:

The 10th percentile is 66.42.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

X ~ N(70, 14).

This means that [tex]\mu = 70, \sigma = 14[/tex]

Suppose that you form random samples of 25 from this distribution.

This means that [tex]n = 25, s = \frac{14}{\sqrt{25}} = 2.8[/tex]

Find the 10th percentile.

This is X when Z has a pvalue of 0.1, so X when Z = -1.28.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]-1.28 = \frac{X - 70}{2.8}[/tex]

[tex]X - 70 = -1.28*2.8[/tex]

[tex]X = 66.42[/tex]

The 10th percentile is 66.42.

Answer:

The margin of error for a 99% confidence interval is of 0.0639, that is, approximately 0.06.

The margin of error for a 95% confidence interval is of 0.0486, that is, approximately 0.05.

The margin of error for a 90% confidence interval is of 0.0408, that is, approximately 0.04.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

350 citizens, 240 responded favorably:

This means that [tex]n = 350, \pi = \frac{240}{350} = 0.6857[/tex]

99% confidence level

So [tex]\alpha = 0.01[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.01}{2} = 0.995[/tex], so [tex]Z = 2.575[/tex].

[tex]M = 2.575\sqrt{\frac{0.6857*0.3143}{350}} = 0.0639[/tex]

The margin of error for a 99% confidence interval is of 0.0639, that is, approximately 0.06.

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

[tex]M = 1.96\sqrt{\frac{0.6857*0.3143}{350}} = 0.0486[/tex]

The margin of error for a 95% confidence interval is of 0.0486, that is, approximately 0.05.

90% confidence level

So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].

[tex]M = 1.645\sqrt{\frac{0.6857*0.3143}{350}} = 0.0408[/tex]

The margin of error for a 90% confidence interval is of 0.0408, that is, approximately 0.04.

Answer:

13.5 = 9.5 + x

x=4

Step-by-step explanation:

In this problem, the price of the baseball cap, which is $9.50, and a baseball, whose price is unknown (and therefore must be the variable), total $13.50. So, to set up the equation add the two prices and set them equal to the total, 9.5+x=13.5.

Then, using the subtraction property of equality subtract 9.5 from both sides. This means x=4, so the baseball cost 4 dollars.

Answer:

how to delete a question can you tell me

Answer:

X earns $ 2,178.57, as does Z, while Y earns $ 1,742.85.

Step-by-step explanation:

Since an employer pays three workers X, Y and Z a total amount of $ 6100 a month, of which X is paid 125% of the amount Y is paid; which represents 80% of the amount Z is paid, to determine how much does X receive a month the following calculation must be performed:

X = 1.25Y

Y = 0.8Z

Z = Z

Z + Y + X = 6,100

Z + 0.8Z + (1.25 x 0.8Z) = 6,100

Z + 0.8Z + Z = 6,100

2.8Z = 6,100

Z = 6,100 / 2.8

Z = 2,178.57

Y = 0.8 x 2,178.57 = 1,742.85

X = 1,742.85 x 1.25 = 2,178.57

2,178.57 + 2,178.57 + 1,742.85 = X

6,099.99 = X

Thus, X earns $ 2,178.57, as does Z, while Y earns $ 1,742.85.

Answer:

The answer is 7/11 , Hope this helps!!

Answer:

4.5(0.75)= 3.375 miles

Answer:

3.6 miles

Step-by-step explanation:

4.5*0.25=1.125

1.125*3=3.6

Answer:

Explanation:

6/8 simplifies to 3/4

3 × 3 = 9

4 × 3 = 12

Since they are both multiples of 3, it's equivalent to 6/8.

Answer:

i think it's A

Step-by-step explanation:

The total distance of Kite from the ground is 16.38 meters and this can be determined by using the trigonometric function.

Given :

The following steps can be used in order to determine the total distance of Kite from the ground:

Step 1 - The trigonometric functions can be used in order to determine the total distance of Kite from the ground.

Step 2 - The sine function is used to measure the distance. The mathematical expression of the sine function is:

[tex]\rm sin\theta = \dfrac{P}{H}[/tex]

where P is the perpendicular and H is the hypotenuse.

Step 3 - Now, substitute the values of the known terms in the above expression.

[tex]\rm sin55 = \dfrac{Distance}{20}[/tex]

Step 4 - Simplify the above expression.

Distance = 16.38 meters

For more information, refer to the link given below:

https://brainly.com/question/13710437

Answer:

3 oz of cheese.

Step-by-step explanation:

18 meatball = 2 oz of cheese (Half it)

9 meatballs = 1 oz of cheese (times it by 10)

90 meatballs = 10 oz of cheese (-7 oz of cheese)

She needs 3 oz of cheese more

Answer:

C) 2x10²

Step-by-step explanation:

1400000/7000=

1400/7=

200=

2x10²

Using cosine rule, the value of angle Y in the triangle is 21.3 degrees

The cosine rule is a mathematical formula used to calculate the length of the sides of a triangle when the angles and one side are known. It states that the square of the length of any side of a triangle is equal to the sum of the squares of the other two sides minus twice the product of those sides multiplied by the cosine of the angle between them.

Mathematically, this is expressed as;

y² = x² + w² - 2xwCos(y)

Data given;

Substituting the values into the formula above;

y² = x² + w² - 2xwCos(y)

5.5² = 2.9² + 8.1² -2(2.9)(8.1)cosY

30.25 = 8.41 + 65.61 - 46.98cosY

30.25 = 74.02 -46.98cosY

46.98cosY = 74.02 - 30.25

46.98cosY = 43.77

cos Y = 43.77 / 46.98

cos Y = 0.9317

Y = cos⁻¹(0.9317)

Y = 21.3°

Learn more on cosine rule here;

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[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{7.59 \times 10^5}[/tex]

[tex]\mathsf{10^5}[/tex]

[tex]\mathsf{= 10(10)(10)(10)(10)}[/tex]

  [tex]\mathsf{10(10) = 100}[/tex]

[tex]\mathsf{= 100(100)(10)}[/tex]

[tex]\mathsf{100(100) = 10,000}[/tex]

[tex]\mathsf{= 10,000(100)}[/tex]

[tex]\mathsf{= 100,000}[/tex]

[tex]\mathsf{7.59(100,000)}[/tex]

[tex]\mathsf{= \bf 759,000}[/tex]

[tex]\boxed{\boxed{\huge\text{Answer: \bf 759,000}}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

none of these

Step-by-step explanation:

the side lengths are are 2√5/5, 2, and 4.

sin(x) = opp/hyp

sin(x) = 2/2√5

Answer:

y=72

Step-by-step explanation:

Hey There!

So the Triangle angle sum theorem states that all of the angles in a triangle add up to equal 180

So all we have to do is subtract the given angles from 180 to find the missing angle

180-59-49=72

Thus y=72