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bagirrra123 [75]
3 years ago
8

Test

Mathematics
1 answer:
patriot [66]3 years ago
5 0

Answer:

DF = 4

Step-by-step explanation:

See attachment for proper question

From the attachment, triangle DEF is an image of ABC

By comparing the position of the angles, the following sides are similar

AB to DE

AC to DF

BC to EF

By dividing the similar sides, we calculate the scale of dilation.

Scale = \frac{DE}{AB}

Scale = \frac{8}{4}

Scale = 2

To calculate DF, we make use of sides AC and DF as comparison:

Scale = \frac{DF}{AC}

Substitute 2 for Scale and 2 for AC

2= \frac{DF}{2}

Make DF the subject

DF = 2 * 2

DF = 4

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Quadrilateral ABCD is similiar to quadrilateral EFGH. The lengths of the three longest sides in quadrilateral ABCD are 60 feet,
Ivan

Answer:

15 feet

Step-by-step explanation:

Quadrilateral ABCD has a scale facter of 2.5 over the quadrilateral EFGH. The order of ABCD is 60, 40, 30, and x, EFGH has y, z, 12, and 6.

6 times the scale factor of 2.5 is 15, the answer.

7 0
3 years ago
Which is the best definition of an exterior angle of a triangle
Nina [5.8K]

Answer:

exterior of an angle should add up to 180 with the other angle. so the angle next to the exterior angle should add up to 180. the exterior angle should be the one outside or facing the or opening up to the outside.

Step-by-step explanation:

5 0
4 years ago
The value of a boat, in dollars, x years after its purchase is represented by the function.
DIA [1.3K]
The average decrease in value can be solve by first solving the value at year 1 and year 2
and i think the equation is <span>f(x)=10,000(0.73)^x</span>

at x = 1

<span>f(x) = 10,000(0.73)^x
</span><span>f(1) = 10,000(0.73)^(1)
f(1) = 7300

at x = 2
</span><span>f(x) = 10,000(0.73)^x
</span><span>f(2) = 10,000(0.73)^(2)
f(2) = 5329

so the average decrease = ( 7300 - 5329) = $ 1971 per year</span><span>
</span>
8 0
4 years ago
Pleas e help ; ^ (((
Yuri [45]

Answer:

$535.25

Step-by-step explanation:

withdrawal means to take out (subtract)

$539.50- $35.50= $504

$504- 23.75= $480.25

deposit means to put in (addition)

$480.25+ $55.00 = $535.25

8 0
3 years ago
The winner of a raffle will receive three/fourths of the money raised from a raffle ticket sales the raffle raised $530.40 how m
Roman55 [17]
It is 397.8 bc if u make 530.4 a fraction = 530.4/1 then u just multiply it by 3/4 u will get 1591.2/4 then u simply reduce it by dividing ( top in , bottom out ) and u get 397.8
7 0
3 years ago
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