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siniylev [52]
3 years ago
7

Solve x2 - 3x = 28 by factoring.

Mathematics
2 answers:
Anastasy [175]3 years ago
8 0

Answer:

<h2>x = -4 or x = 7</h2>

Step-by-step explanation:

x^2-3x=28\qquad\text{subtract 28 from both sides}\\\\x^2-3x-28=0\\\\x^2+4x-7x-28=0\qquad\text{distribute}\\\\x(x+4)-7(x+4)=0\\\\(x+4)(x-7)=0\iff x+4=0\ \vee\ x-7=0\\\\x+4=0\qquad\text{subtract 4 from both sides}\\\boxed{x=-4}\\\\x-7=0\qquad\text{add 7 to both sides}\\\boxed{x=7}

sertanlavr [38]3 years ago
8 0

Answer:

x = -4 or x = 7

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If M &lt;1 = 115 degrees what is m &lt;2
SIZIF [17.4K]

Answer:

M<2= 65

Step-by-step explanation:

The reason it is 65 because 2 angles add up to either 90 or 180 and in this case it would be 180.

You would use angle addition postulate to find the answer so M<1 + M<2 = 180.

Since M<1 is 115 you would substitute it into the formula so 115 + M<2 = 180

Then you would subtract 115 from 180 in which you would get M<2 = 65

6 0
3 years ago
Plz help and show work! easy points! It needs factored​
Bad White [126]

Answer: 2(x2 + 10x + 16)

Step-by-step explanation: You need to factor the whole equation by 2. In other words divide each term by 2 and put parentheses to indicate factoring. You should get 2(x2 + 10x + 16)

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4 years ago
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Find the unknown side length. Round to the nearest tenth a=5 b=? C=25
ZanzabumX [31]

Answer: 5

Step-by-step explanation:

6 0
3 years ago
Help me out? it would mean tons tysm
m_a_m_a [10]

Answer:

y - 5 = -3(x + 2)

General Formulas and Concepts:

<u>Algebra I</u>

Point-Slope Form: y - y₁ = m(x - x₁)  

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Step-by-step explanation:

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Point (-2, 5)

<u>Step 2: Write function</u>

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The hypotenuse of triangle JKL(KL = 10) is congruent to a leg of triangle XYZ (YX = 10). This implies that they cannot be congruent triangles.

Therefore, ΔJKL and ΔXYZ CANNOT be congruent triangles because: the hypotenuse of one triangle is equal in length to the leg of the other triangle.

Learn more about congruent triangles on:

brainly.com/question/11457412

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2 years ago
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