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3 years ago

Pls help I’m failing

Mathematics

1 answer:

GuDViN [60]3 years ago

6 0

Answer:

-7

Step-by-step explanation:

you divide both sides by -2 and 14/-2 is equal to -7

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Cut a 60 cm ribbon into such that one part is one third of the other half

oee [108]

Answer:

15cm and 45cm

Step-by-step explanation:

If one part is one third of the other, then the long one is three times as long as the short one.

If the short one has length x

x + 3x = 60cm

4x = 60cm

x = 15cm

So short one is 15cm and the long one is 3*15cm = 45cm

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3 years ago

Express (x+5)² as a trinomial in standard form

dolphi86 [110]

Answer:

Step-by-step explanation:

(x+5)² = x² + 10x + 25

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3 years ago

A plane is flying at an altitude of 45,000 feet. It begins to drop in altitude 3,000 feet per minute. What is the slope in this

In-s [12.5K]

Answer: C which is -3,000

Step-by-step explanation:

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2 years ago

WILL MARK BRANLIEST A graph is shown below: Dotted line joining negative 1, negative 2 and 5,0 and the region above the line is

s2008m [1.1K]

Hello there!

<span>A graph is shown below: Dotted line joining negative 1, negative 2 and 5,0 and the region above the line is shaded. Which of the following inequalities is best represented by this graph? x − 3y > 5 x − 3y < 5 x − 2y > 5 x − 2y < 5

Answer:
</span><span>x – 3y < 5</span>

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3 years ago

Which is greater 4 P 3 or 4 C 3?

Vladimir [108]

Answer:

$\large\boxed{_4P_3>_4C_3}$

Step-by-step explanation:

$\left\begin{array}{ccc}_nP_r=\dfrac{n!}{(n-r)!}\\\\_nC_r=\dfrac{n!}{r!(n-r)!}\end{array}\right\}\Rightarrow\dfrac{n!}{(n-r)!}>\dfrac{n^!}{r!(n-r)!}\Rightarrow_nP_r>_nC_r\\\\\text{because}\\-\text{the nominators are the same}\\-\text{the denominator}\ (n-r)!\ \text{is graeter than the denominator}\ r!(n-r)!$

$\text{Let's check our example:}\\\\n!=1\cdot2\cdot3\cdot4\cdot...\cdot n\\\\_4P_3=\dfrac{4!}{(4-3)!}=\dfrac{1\cdot2\cdot3\cdot4}{1!}=\dfrac{24}{1}=24\\\\_4C_3=\dfrac{4!}{3!(4-3)!}=\dfrac{1\cdot2\cdot3\cdot4}{1\cdot2\cdot3\cdot1!}=\dfrac{24}{6}=4\\\\24>4\Rightarrow_4P_3>_4C_3$

3 0

3 years ago

Read 2 more answers