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2 years ago

HELP PLEASEEE ASAAAAPPPPPPPPPPPP I WILL GIVE BRAINLY TO THE FIRST ONE!!!!!!!!

Mathematics

1 answer:

gogolik [260]2 years ago

6 0

Answer:

the total amount is £ 756.

hope it helps..

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Multiply and simplify the product.

lianna [129]

Multiplying complex numbers is a lot like multiplying binomial terms. The only relation one has to remember when dealing with complex numbers is that i² = -1.

Now let us try to multiply binomials. This is done by adding the products of the first term of the first binomial distributed to the second binomial, and the second term of the first binomial distributed to the second binomial. This is done below:

(3 – 5i)(–2 + 4i) = -6 + 12i + 10i -20i²

Simplifying and applying i² = -1:
-6 + 22i - 20(-1)
-6 + 22i + 20
14 + 22i

Among the choices, the correct answer is B.

5 0

3 years ago

Read 2 more answers

Which of the lines graphed has a slope of -1/2 and a y-intercept of 3?

VARVARA [1.3K]

Answer:

The answer is image 3.

Step-by-step explanation:

The equation for the line will be y = (-1/2)x + 3 so the gradient is negative and you will have to find the x-intercept and y-intercept.

x-intercept :

$let \: y = 0$

$0 = - \frac{1}{2} x + 3$

$\frac{1}{2} x = 3$

$x = 3 \div \frac{1}{2}$

$x = 6$

y-intercept :

$let \: x = 0$

$y = - \frac{1}{2} (0) + 3$

$y = 3$

8 0

3 years ago

Read 2 more answers

What is the value of -4 x ( 4 - 6 ) ?

Delicious77 [7]

Answer: 8

Step-by-step explanation:

4 0

2 years ago

34. Make Sense and Persevere Stay Fit gym

Evgesh-ka [11]

Answer:

15 classes

Step-by-step explanation:

Let

x -----> the number of class

y ----> the total amount in charges

we know that

The total charge is equal to the number of class multiplied by the additional fee plus the membership fee (only members)

Members

$y=3x+75$ -----> equation A

Non Members

$y=8x$ -----> equation B

Equate equation A and equation B

$8x=3x+75$

Solve for x

$8x-3x=75$

$5x=75$

$x=15$

7 0

3 years ago

Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to determine the value of c so t

IgorLugansk [536]

Using the normal distribution, considering it's symmetry, it is found that the value of C is of 2.19.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

$Z = \frac{X - \mu}{\sigma}$

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The standard normal distribution has mean and standard deviation given, respectively, by:

$\mu = 0, \sigma = 1$ .

Hence, considering the symmetry of the normal distribution, the value of c is Z with a p-value of (1 + 0.9715)/2 = 0.98575, hence c = Z = 2.19.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

4 0

1 year ago