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3 years ago

Please help me, choose the right one

Mathematics

2 answers:

gtnhenbr [62]3 years ago

6 0

It is A for sure hope this helps

Semmy [17]3 years ago

5 0

The answer would be C. $18

Let me know if you have questions

Hope this helps

Have a great day/night

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Supriya has a lot more cards than Sanya and is willing to give her 256 cards for a month. She will charge an interest of 100% pe

yuradex [85]

Answer:

In early production, first calcium cyanamide was converted into dicyandiamide, which was heated above its melting temperature to produce melamine. Today most industrial manufacturers use urea in the following reaction to produce melamine: 6 (NH2)2CO → C3H6N6 + 6 NH3 + 3 CO.

8 0

3 years ago

Write down the reciprocal of<br> 1/3

Leokris [45]

<h2><u>RECIPROCAL</u></h2>

<h3>ANSWER: </h3>

$\boxed{ \bold{3 \: \: \: or \: \: \: \frac{3}{1} }}$

<h3>EXPLANATION:</h3>

As we can see above, it's clear that 3 and 1/3 are reciprocals of each other.

And we can find the reciprocal of 1/3 by forming a fraction and to multiply the numerator and denominator by 3.

$\\ \large \tt \: \frac{1 \times 3}{ \frac{1}{3} \times 3 } = \bold{ \frac{3}{1} = 3} \\ \\$

Hence, 3/1 or 3 is the correct answer.

_______________∞_______________

6 0

2 years ago

Read 2 more answers

What is the average velocity of the bouncing ball over the 5 seconds?

Harlamova29_29 [7]

Your answer would be -20 ft per sec/5 = -4 ft/sec

7 0

3 years ago

Solve 5x2 = −30x − 65

Crank

I hope this helps you

5x^2+30x+65=0

5 (x^2+6x+13)=0

x^2+6x+13=0

a=1 b=6 c=13

disctirminant=b^-4ac

disctirminant=6^2-4.1.13

disctirminant=36-52

disctirminant= -16

x1= -6+square root of -16/2.1

x1= -6+4i/2=2i-3

x2= -6- square root of -16/2.1

x2= -6-4i/2= -3-2i

6 0

3 years ago

What is the area of a triangle whose vertices are X(1, 1), Y(3, -1), and Z(4,4)?

shepuryov [24]

Answer:

Step-by-step explanation:

Note that in this diagram, point A represents point X, point B represents point Y, and point C represents point Z.

From the diagram, it appears as if $\overline{XZ} \perp \overline{XY}$ . To determine if this is the case, we can find the slopes of both segments.

$m_{\overline{XZ}}=\frac{4-1}{4-1}=1\\m_{\overline{XY}}=\frac{-1-1}{3-1}=-1$

Since these slopes are negative reciprocals, we know that they are perpendicular.

This means we can use the formula $A=\frac{1}{2}bh$ , where b is the base (XY) and h is the height (XZ).

Note these are interchangeable.

Using the distance formula,

$XY=\sqrt{(3-1)^{2}+(-1-1)^{2}}=2\sqrt{2}\\XZ=\sqrt{(4-1)^{2}+(4-1)^{2}}=3\sqrt{2}$

This means the area is $\frac{1}{2}(2\sqrt{2})(3\sqrt{2})=\boxed{6}$

7 0

2 years ago