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3 years ago

All equilateral triangles are isosceles, true or false

2 answers:

jeka943 years ago

8 0

True- for a triangle to be isosceles, it has to have at least two sides congruent, and an equilateral has three sides congruent

Allushta [10]3 years ago

5 0

Not true equilateral triangles have 3 equal sides and isosceles have 2 equal sides and 1 different

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What are the correct justifications , listed in proper order?

Sergio039 [100]

Answer:

4 5 6 7

Step-by-step explanation:

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2 years ago

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A sprinter who weighs 706 N runs the first 5.5 m of a race in 1.6 s, starting from rest and accelerating uniformly. What are the

zhenek [66]

Answer:

(a) Speed = 6.875 m/s

(b) Kinetic Energy = 1.70 kJ

Step-by-step explanation:

Given:

d = 5.5 m

t = 1.6 s

W = 706 N

Part (a)

Using the equation of motion with the assumption of zero initial speed:

$d = \frac{1}{2} ({v-0})t$

$5.5= \frac{1}{2} (1.6v)$

The speed of the sprinter then become:

$v = 6.875 m/s$

Part (b)

Convert the weight of the sprinter to mass:

$m = \frac{w}{g}$

$m = \frac{706}{9.8}$

$m = 72 kg$

KE (Kinetic Energy) can then be calculated as:

$KE = \frac{1}{2} mv^{2}$

$KE = \frac{1}{2} (72)(6.875)^{2}$

$KE = 1701.56 J = 1.70 kJ$

Part (c)

The change of the kinetic energy is equivalent to the work done by the sprinter. The average power P is the rate of the work done and can be calculated as

$P = \frac{KE}{t} \\\$

$P = \frac{1701.56}{1.6}$

$P = 1063.48 W = 1.06 kW$

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3 years ago

What does x=? I know it is vertical

Rudik [331]

The angles are <span>supplementary
</span>
7x + x + 20 = 180
8x = 160
x = 20

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3 years ago

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Noala brought 2 boxes of fruit bars to share with his football team. There are 12 bars in each box and 16 people on the team. If

Liono4ka [1.6K]

Each person would get 1.5 bars.

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3 years ago

Give a helping hand please.

Studentka2010 [4]

$\frac{5}{6}$

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2 years ago