3 years ago

Can someone help me please

Mathematics

1 answer:

valentina_108 [34]3 years ago

3 0

Answer:

What do you need to know?

Step-by-step explanation:

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Sid intended to type a seven-digit number, but the two 3's he meant to type did not appear. What appeared instead was the five-d

Karo-lina-s [1.5K]

Answer: D. 21ways.

Step-by-step explanation:

This is based on selection, fixing two '3' numbers into 5numbers to make it 7 numbers can be done in 7C2 ways.

Generally, nCr = n!/(n-r)!r!

7C2 = 7!/(7-2)!2!

=7!/5!2!

=7×6×5!/5!×2!

=7×6/2

=21ways (D)

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3 years ago

While shopping for clothes Jaclyn spent 38 less than 2 times what Daniel spent. Jaclyn spent $10. Writes and solve an equation t

Colt1911 [192]

38-(2•x)=10 < equation
$14 < Dylan spent

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3 years ago

A rectangular piece of land is 1.2 km by 900 m. What is the area in square kilometers?

allsm [11]

1.08 km^2 you get this by converting 900 meters to .9 km and then just multiply the 2 numbers together to get the area

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4 years ago

Go step by step to reduce the radical.

zysi [14]

2x16 is 32 so you would take square root of 16 out which is 4 and leave the 2 inside. So the answer is 4sqrt(2)

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2 years ago

Given:

Fynjy0 [20]

Answer:

Option B is correct.

$\triangle RST \cong \triangle TUR$

Step-by-step explanation:

Given: RSTU is a parallelogram.

By definition of parallelogram, two pairs of opposite sides are congruent in length.

⇒ $TU \cong RS$ and $TS \cong RU$

In triangle RST and triangle TUR

$RS \cong TU$ [Side]

$TS \cong RU$ [Side]

$RT \cong RT$ [Common side]

SSS(Side-Side-Side) postulates states that if three sides of one triangle are congruent to three sides of other triangle, then the triangles are congruent.

then, by SSS postulates we have;

$\triangle RST \cong \triangle TUR$

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4 years ago