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3 years ago

PLEASE HELP. In the figures △CDA ≅ △XYZ

Mathematics

2 answers:

Dafna11 [192]3 years ago

8 0

Answer:

Option C is correct.

Step-by-step explanation:

Given: ΔCDA $\cong$ ΔXYZ

Congruent triangles states that when they have exactly the same three sides and exactly the same three angles.

therefore,

by CPCT (Corresponding Part of Congruent Triangle) in triangle CDA and triangle XYZ

we have;

$\angle C \cong \angle X$

$\angle D \cong \angle Y$

$\angle A \cong \angle Z$

irga5000 [103]3 years ago

6 0

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Answer:

D. 4(a^2)(a^3)/16(b)(b^2)

Step-by-step explanation:

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3 years ago

Answer this question please shown in the image below.

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3 years ago

6.- Find the area under the standard normal distribution: to the left of z=-1.55.

Kisachek [45]

Answer:

$P(z$

Step-by-step explanation:

For this case we want to find this probability:

$P(z$

Because they want the area to the left of the value. We need to remember that the normal standard distribution have a mean of 0 and a deviation of 1.

We can use the following excel code: =NORM.DIST(-1.55,0,1,TRUE)

And we got:

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5 0

3 years ago

Please help I have no clue how to do this

Alinara [238K]

Step-by-step explanation:

It's a question of trigonometry.

You need to remember that tangent (tan) stands for Perpendicular / Base.

So, tan P = QR / PR

By Pythagoras Theorem,

34² = 30² + x²

x² = 34² - 30²

x² = 1156 - 900

x² = 256

x = 16

Now, placing the values,

tan P = 30 / 16

tan P = 1.875

HOPE IT HELPS ^_^

5 0

2 years ago

The number of windows on each floor form an arithmetic sequence; 124 windows on the first floor, 116 windows on the second floor

zubka84 [21]

Answer:

Formula is 132 - 8n, and there are 52 windows on 10th floor.

Step-by-step explanation:

difference = 116-124 = -8 ( 8 less windows for every floor you go up)

the first fllor has 124 windows

Formula:

$a_{1} = 124$

$a_{n} = 124 + (-8)(n - 1)$ = 132 - 8n

10th Floor:

$a_{10} = 124 + (-8)(10 - 1) = 124 + (-8)(9) = 124 - 72 = 52 windows$

6 0

2 years ago