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3 years ago

Please help. Find the value of x in the triangle shown below. 5 8

Mathematics

1 answer:

Levart [38]3 years ago

4 0

Answer:

x=+- $\sqrt{89}$

Step-by-step explanation:

$x^{2}$ = $8^{2}$ + $5^{2}$

$x^{2}$ =64+25

$x^{2}$ =89

x=+- $\sqrt{89}$

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Triangle A″B″C″ is formed by a reflection over x = −1 and dilation by a scale factor of 4 from the origin. Which equation shows

juin [17]

Answer:

$\frac{AB}{A''B''} = \frac{1}{4}$

Step-by-step explanation:

Given the information:

A'B'C' reflection over x = −1
dilation by a scale factor of 4 from the origin

<=> the two triangles are similar to each other, triangles are similar if they have the same shape, but can be different sizes, so A″B″C″ is 4 time bigger than ABC

=> the relationship between ΔABC and ΔA″B″C″

= $\frac{AB}{A''B''} = \frac{1}{4}$

We choose C.

Hope it will find you well.

7 0

3 years ago

HELP ME PLEASE IVE BEEN STRUGGLING WITH THIS FOR SO LONG

Ber [7]

Answer:

Step-by-step explanation:

Figure Interpretation:

m∠CBA + m∠CDE = 180

m∠BCA = (180-m∠CBA)/2

m∠DCE = (180-m∠CDE)/2

=======================

Then

m∠BCA + m∠DCE = (180-m∠CBA)/2 + (180-m∠CDE)/2

= [360-(m∠CBA+m∠CDE)]/2

= [360 - 180]/2

= 90

finally,

m∠ACE= 180 - (m∠BCA + m∠DCE)

= 180 - 90

= 90

8 0

2 years ago

If a car moves at a speed of 80 km/h for 5 hours, what distance will it travel?

jarptica [38.1K]

S = D/t

D = S×t

D = 80km/h×5h = 400 km

8 0

3 years ago

Read 2 more answers

2. A rope is thrown over a beam, and one end is tied to a 300 N bundle of lumber. You pull the free end of the rope 2 m with a f

bonufazy [111]

504 water resource of number of the lumber of the ground

3 0

3 years ago

How to complete this

KATRIN_1 [288]

Answer:

4 $x^{6}$ $y^{7}$

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$

12 $x^{5}$ × $y^{3}$ × $\frac{1}{2}$ x x $\frac{2}{3}$ $y^{4}$

= 12 × $\frac{1}{2}$ × $\frac{2}{3}$ × $x^{(5+1)}$ × $y^{(3+4)}$

= 4 $x^{6}$ $y^{7}$

8 0

3 years ago