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3 years ago

Does anyone know this

Mathematics

1 answer:

Rudik [331]3 years ago

6 0

Answer:

its the first one. you're right.

A reflection over y-axis.

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Solve. 11 = 4 x Z 11= 4 x z

Lelechka [254]

$\huge\textbf{Hey there!}$

$\large\boxed{\mathbf{11 = 4\times z}}\\\large\boxed{\mathbf{\rightarrow 4\times z = z}}\\\large\boxed{\mathbf{\rightarrow 4z = 11}}\\\\\large\textbf{DIVIDE 4 to BOTH SIDES}\\\large\boxed{\mathbf{\rightarrow \dfrac{4z}{4} = \dfrac{11}{4}}}\\\bullet\large\textbf{ CANCEL out: }\bf{\dfrac{4}{4}}\large\textbf{ because it gives you 1}\\\bullet\large\textbf{ KEEP: }\bf\dfrac{11}{4}\large\textbf{ because it gives you the z-value}\\\\\large\textbf{SIMPLIFY IT!}\\\\\mathbf{z = \dfrac{11}{4 }\approx 2\dfrac{3}{4}}}$

$\huge\textbf{Therefore, your answer is: }\\\huge\boxed{\mathsf{z = \dfrac{11}{4}\ or \ 2\dfrac{3}{4}}}\huge\checkmark$

$\large\textbf{Either of those two should work because they are both}\\\large\textbf{equivalent to each other! }\heartsuit$

$\huge\textbf{Good luck on assignment \& enjoy}\\\huge\textbf{your day!}$

~ $\frak{Amphitrite1040:)}$

7 0

3 years ago

Read 2 more answers

8090 [49]

Answer:

im guessing it is 6

Step-by-step explanation:

ok ok hi hi

4 0

3 years ago

(b) Develop a probability distribution for x y. x y f(x y) 130 Incorrect: Your answer is incorrect. 80 Incorrect: Your answer is

GenaCL600 [577]

Answer:

P(X = x, Y = y) = f(x, y)

Step-by-step explanation:

Let X be a discrete random variable, and suppose that the possible values that it can assume are given by x1, x2, x3, . . . , arranged in some order. Suppose also that these values are assumed with probabilities given by

P(X = xk) = f(xk) k = 1, 2, . . . (1)

It is convenient to introduce the probability function, also referred to as probability distribution, given by

P(X = x) = f(x)

If X and Y are two discrete random variables, we define the joint probability function

of X and Y by

P(X = x, Y = y) = f(x, y)

where f(x, y) ≥ 0

5 0

3 years ago

Help me find the value of x

Sergeu [11.5K]

We know that the entire angle is equal to 90 degrees (look at image below). This means that the sum of 4x-10 and x is 90 degrees, so you can make a formula:

4x - 10 + x = 90

Now you can solve for x

5x - 10 = 90

5x = 100

x = 20

Hope this helped!

3 0

3 years ago

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The quantities x and y are proportional. pls help plsssss this work is due 20 min plsss helppp

Dahasolnce [82]

Answer: 2.5

Step-by-step explanation:

y = rx

substitute numbers in and solve for r

y = 10

x = 4

then

10 = r4

r = 10/4 = 2.5

this works for all the other numbers and always gives r = 2.5

5 0

4 years ago