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KengaRu [80]
3 years ago
5

What value for c will make the expression a perfect square trinomial? X^2-7x+c

Mathematics
1 answer:
gavmur [86]3 years ago
6 0

Answer: c= 49/4

Step-by-step explanation:

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What must be added to 3x^3+x^2-22x+9 so that the result is exactly divisible by 3x^2+7x-6.​
Alecsey [184]

Answer:

Step-by-step explanation:

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3 years ago
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What is the answer to this somebody!!!
Fed [463]

Use the geometric mean for right triangles as the sides are related to the hypotenuse. 30 - 6 = 24. We need that for our proportion. \frac{24}{x}=\frac{x}{30}. We cross-multiply to get x^2=720. Taking the square root of both sides gives us that x=12\sqrt{5}, the second choice above.

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4 years ago
Lexi had 3/4 of an apple pie. She gave 1/4 of what she had to her friend Julie. What fraction of the whole pie did Julie get?
Murljashka [212]

Answer:

<u>3/16 of the whole pie</u>

Step-by-step explanation:

Lexi had 3/4 of an apple pie. She gave 1/4 of it to Julie. That means what Julie receives is the product of the whole and the portion.

==========================================================

Solving :

Therefore, the equation is :

⇒ 3/4 × 1/4

⇒ <u>3/16 of the whole pie</u>

4 0
2 years ago
8. Solve for x.<br> A 30<br> C 180<br> B 60<br> D 90
xxTIMURxx [149]

Answer:

<em><u> </u></em><em><u>Given </u></em><em><u>:</u></em>

<em><u>=</u></em><em><u>></u></em><em><u> </u></em><em><u>An </u></em><em><u>equilateral</u></em><em><u> Triangle</u></em><em><u> </u></em><em><u>i.e </u></em><em><u>a </u></em><em><u>triangle</u></em><em><u> </u></em><em><u>which </u></em><em><u>have </u></em><em><u>all </u></em><em><u>it's</u></em><em><u> </u></em><em><u>side </u></em><em><u>equal.</u></em>

<em><u>To </u></em><em><u>Find </u></em><em><u>:</u></em>

<em><u>=</u></em><em><u>></u></em><em><u>The </u></em><em><u>value </u></em><em><u>of </u></em><em><u>(</u></em><em><u>2</u></em><em><u>x</u></em><em><u>)</u></em><em><u>°</u></em>

<em><u>-</u></em><em><u>-</u></em><em><u>-</u></em><em><u>-</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>-</u></em><em><u>-</u></em><em><u>-</u></em><em><u>-</u></em><em><u>❣️</u></em>

<h2><em><u>Solution</u></em><em><u> </u></em></h2>

<em><u>----_______----❣️</u></em>

<em><u>1</u></em><em><u>. </u></em><em>We </em><em>know</em><em> </em><em>that </em><em>the </em><em>sum </em><em>of </em><em>a </em><em>triangle</em><em> </em><em>is </em><em>1</em><em>8</em><em>0</em><em>°</em>

<em>2.We </em><em>also </em><em>know</em><em> </em><em>that </em><em>all </em><em>the </em><em>sides </em><em>of </em><em>a </em><em>triangle</em><em> </em><em>are </em><em>equal</em><em> </em><em>hence,</em><em> thier</em><em> </em><em>corresponding</em><em> </em><em>Angles </em><em>are </em><em>Equal</em><em> </em><em>too.</em>

<em>So.</em><em>.</em><em>.</em>

<em> </em><em><u>Each </u></em><em><u>angle </u></em><em><u>measures </u></em><em><u>6</u></em><em><u>0</u></em><em><u>°</u></em><em><u>. </u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>(</u></em><em><u>.</u></em><em><u>1</u></em><em><u>)</u></em>

<em><u>3</u></em><em><u>.</u></em><em><u> </u></em><em>using(</em><em>1</em><em>)</em><em>,</em>

<em>We </em><em>can </em><em>find</em><em> the</em><em> </em><em>value</em><em> </em><em>of </em><em>x</em>

<h2><em>=</em><em>></em><em> </em><em>2</em><em>x</em><em>°</em><em> </em><em>=</em><em>6</em><em>0</em><em>°</em></h2><h2><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>x=</em><em> </em><em>6</em><em>0</em><em>/</em><em>2</em></h2><h2><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>x=</em><em> </em><em>3</em><em>0</em></h2>

3 0
3 years ago
Graph the linear equation in three plots: -x+2y=11
MariettaO [177]

Answer:

<h2>In the attachment.</h2>

Step-by-step explanation:

Convert the given equation to the form y = mx + b:

-x+2y=11          <em>add x to both sides</em>

2y=x+11          <em>divide both sides by 2</em>

y=\dfrac{1}{2}x+\dfrac{11}{2}

It's a linear function.

We need only two points to plot the graph. Select any two x values, insert into the equation and calculate y values.

for x = 1

y=\dfrac{1}{2}(1)+\dfrac{11}{2}=\dfrac{1}{2}+\dfrac{11}{2}=\dfrac{12}{2}=6\to(1,\ 6)

for x = -5

y=\dfrac{1}{2}(-5)+\dfrac{11}{2}=-\dfrac{5}{2}+\dfrac{11}{2}=\dfrac{6}{2}=3\to(-5,\ 3)

3 0
3 years ago
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