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Cloud [144]
3 years ago
10

So how would you break down the problem(2x-5)^2=49

Mathematics
2 answers:
BigorU [14]3 years ago
4 0
First, simplify the equation.

4x2−20x+25=<span>49
</span>
Step 2: Subtract 49 from both sides.

<span><span>4x2−20x+25</span>=<span>49 - 49

</span></span><span><span>4x2−20x</span>−24 </span>=<span>0
</span>
Step 3: Factor left side of equation.

<span><span><span>4<span>(x+1)</span></span><span>(x−6)</span></span>=<span>0

</span></span>Step 4: Set factors equal to 0.

<span><span><span>x+1</span>=<span><span><span>0<span> or </span></span>x</span>−6</span></span>=0

Your answers:
</span><span><span>x=<span>−<span><span>1<span> or </span></span>x</span></span></span>=6</span><span>
</span><span>

</span>
ivanzaharov [21]3 years ago
3 0
To solve this you first expand the brackets.
4x^2 - 20x + 25 = 49
Then make it equal 0.
4x^2 - 20x - 24 = 0
Now solve the quardratic.

x^2 - 5x - 6 = 0
(x - 6)(x + 1) = 0
x = 6 or x = -1
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mylen [45]

Answer:

Step-by-step explanation:

V, r, h are the volume, radius, and height, respectively.

V = πr²h = 9πr²

The only error in your previous answers was that you forgot the π.

if r = 1, V = 9π1² = 9π ≅ 28 in³

if r = 2, V = 9π2² = 36π ≅ 113 in³

if r = 3, V = 9π3² = 81π ≅ 254 in³

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3 years ago
12. MP Persevere with Problems Write the function rule for each function.
densk [106]

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6. 50,000 7. 900 8. 70,000,000 9. 30,000,000

Step-by-step explanation:

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2 years ago
A die is rolled one thousand times. The percentage of aces should be around ____ or so. the first step iin computing this proble
Katyanochek1 [597]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

Please find the complete question in the attached file.

Box \ average =\frac{1}{6}  \\\\SD = \frac{1}{6}  \times \frac{5}{6} = \frac{5}{36} \approx 0.373\\\\Expected \ value= 1000 \times \frac{1}{6}  \approx 166.7\\\\SE = 1000 \times 0.373 \approx 11.8\\\\

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The percentage of aces is expected to be around 16.67% , or 1.2%.

7 0
3 years ago
Given that El bisects ZCEA, which statements must be
Alexxx [7]

Question: Given that BE bisects ∠CEA, which statements must be true? Select THREE options.

(See attachment below for the figure)

m∠CEA = 90°

m∠CEF = m∠CEA + m∠BEF

m∠CEB = 2(m∠CEA)

∠CEF is a straight angle.

∠AEF is a right angle.

Answer:

m∠CEA = 90°

∠CEF is a straight angle.

∠AEF is a right angle

Step-by-step explanation:

Line AE is perpendicular to line CF, which is a straight line. This creates two right angles, <CEA and <AEF.

Angle on a straight line = 180°. Therefore, m<CEA + m<AEF = m<CEF. Each right angle measures 90°.

Thus, the three statements that must be TRUE are:

m∠CEA = 90°

∠CEF is a straight angle.

∠AEF is a right angle

3 0
2 years ago
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<em>I hope this helps, and Happy Holidays! :)</em>

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