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jek_recluse [69]
3 years ago
13

What is the data value X if its z value is

Mathematics
1 answer:
aleksley [76]3 years ago
4 0
The formula for this type of question is z=x-u/y
z=-2 (z-value)
u = 27 (mean)
y = 4 (standard deviation)

Therefore -2=x-27/4
You now figure this out like a normal equation

4x-2=4 X x-27/4
-8+27= x-27+27
19=x

Therefore the data value of x is 19
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PLS BRANLIEST
Neko [114]

Dilation is the process in which the dimensions of a given shape is increased or decreased by a scale factor. Therefore the answers to the questions are:

A. Since the dilation of triangle XYZ do not affect the measure of its internal angles, then the trigonometric ratios of respective internal angles are the same.

B. segment CB = 10

ii. segment AB = 11.18

From the given information in the question, triangle XYZ is an image of triangle ACB. In triangle XYZ, given that Sin X = ; it implies that its hypotenuse is 5.59, and the opposite side as 5. So that;

Sin X =

X =  0.8945

X  =

Thus,

<X + <Y + <Z =

+  + <Z =

<Z =  -

   =

<Z =

So then, the third side can be determined by applying the Pythagoras theorem.

=  +

=  +

=  -

  = 6.2481

x =

 = 2.49962

x = 2.5

Thus,

Cos X =

          =

Cos X =

Tan X =

         =

Tan X =

Therefore:

A. Considering triangles XYZ and ACB, the measure of their respective internal angles are the same.

i.e <X ≅ <A

   <B ≅ <Z

   <C ≅ <Y

So that the trigonometric ratios of respective internal angles are the same.

B. Given that triangle XYZ was dilated by a scale factor of 2, then the respective length of each sides of triangle ACB is twice that of XYZ.

Then,

i. segment CB = 2 x segment YZ

                    = 2 x 5

segment CB = 10

ii. segment AB = 2 x segment XZ

                       = 2 x 5.59

segment AB = 11.18

8 0
3 years ago
Please help!! There is a photo of my question
goldfiish [28.3K]

Answer:

0.03A + 0.03B = 800

A + B = 20000

Step-by-step explanation:

Let one part A of the total money invested with 3% interest = $A

Therefore, other part B of the money invested with 5% interest = $B

Interest = Principal amount × Rate of interest × Duration of investment

If the duration is 1 year,

Interest = Principal amount × Rate of interest

Return on part A = A × 0.03

Return on part B = B × 0.05

Total return = $800

So the equations will be,

0.03A + 0.03B = 800 -------(1)

Since, total money invested = $20000

Equation will be,

A + B = 20000 -------(2)

6 0
3 years ago
If she writes 6 checks for exactly $19.98 what expression describes the change in her bank account
aleksley [76]
$119.88 hope it helps
4 0
3 years ago
Lisa is making headbands using ribbons she would like to make 12 headbands each one requires 15.5 inches of ribbon she estimates
Wittaler [7]

No it is not reasonable because you need 186 inches of ribbon and 160 is not nearly enough

4 0
3 years ago
Inish earns $6.25 for each car he washes. He always puts $25 of his weekly earnings into his college savings account. This week,
alexandr1967 [171]
1 car = $6.25.
7 cars = $43.25
7 x $6.25 = $43.25
10 cars = $62.50
I got this far
3 0
3 years ago
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