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Naya [18.7K]
3 years ago
13

Solve for x. PLZ WAIT FOR THE PHTO TO UPLOAD

Mathematics
1 answer:
stepan [7]3 years ago
7 0
6x² - 5x + -21 = 0

Because this whole equation equals zero, we must simply factorize the first half of the equation, or the left side.

(3x - 7)(2x + 3) = 0

I was never really taught a specific way to factorize, so I usually just guess and check when factorizing. It usually takes a long time, it always gives you the tight answer.

Then, take each equation and make it equal zero.

3x - 7 = 0 AND 2x + 3 = 0

3x - 7 = 0

Add 7 to both sides.

3x = 7

Divide both sides by 3.

x = 7/3

Now, we do our second equation.

2x + 3 = 0

Subtract 3 from both sides.

2x = -3

Divide both sides by 2.

x = -3/2

So, x = 7/3 AND x = -3/2

So, your answer is C) x = 7/3, x = -3/2

~Hope I helped!~
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How do I turn 3 1/5 into a decimal?
Tpy6a [65]

Answer:

3.2

Step-by-step explanation:

Step 1: Multiply the whole number by the denominator: 3 × 5 = 15.

Step 2: Add the product you got in Step 1 to the numerator: 15 + 1 = 16.

Step 3: Divide the sum from Step 2 by the denominator: 16 ÷ 5 = 3.2. That's it folks!

4 0
4 years ago
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Radius=9 in <br> The area is _
iren2701 [21]

Step-by-step explanation:

Pie r square

3.14 x 9x9=254.34

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4 years ago
The question is asking me choose all of the numbers that are unit fractions, and here are my options, 14 &lt;16 14 &lt;16 510&lt
____ [38]

Answer:

(d) \frac{4}{8}>\frac{2}{6}

Step-by-step explanation:

Given

\frac{1}{4}

\frac{5}{10}

\frac{1}{2}>\frac{1}{3}

\frac{4}{8}>\frac{2}{6}

\frac{3}{5}>\frac{4}{5}

Required

Select the unit fractions

<em>If we are to go by what a unit fraction means: it means that the numerator of the fraction must be 1 and must be written as a single fraction i.e. </em>\frac{1}{2}<em> and not as an inequality i.e. </em>\frac{3}{5}>\frac{4}{5}<em />

<em>Given the format of the question, what is required of the question is to </em><em>select all correct inequality.</em>

<em></em>

(a) \frac{1}{4}

Convert to decimals

0.25 < 0.167 ---- This is not true because 0.25 > 0.167

(b) \frac{5}{10}

Convert to decimals

0.5 < 0.5 ---- This is not true because 0.5 = 0.5

(c) \frac{1}{2}>\frac{1}{3}

Convert to decimals

0.5 > 0.33 ---- This is true

(d) \frac{4}{8}>\frac{2}{6}

Convert to decimals

0.5 > 0.33 ---- This is true

(e) \frac{3}{5}>\frac{4}{5}

0.6 > 0.8 --- This is not true because 0.6 < 0.8

So: the true inequality is:

(d) \frac{4}{8}>\frac{2}{6}

6 0
3 years ago
Mr zuro finds the mean height of all 14 students in his class to be 69.0 inches. Just as Mr Zuro finishes explaining how to get
ycow [4]

Answer:

69.1

Step-by-step explanation:

<em>Mean height of 14 students = 69.0 inches</em>

<em>Mean = sum of data/number of data</em>

<em>69 = sum of data/14</em>

<em>sum of data = 966</em>

<u>FOR NEW MEAN:</u>

<em>Height of additional student = 70.5</em>

Mean = sum of data/ number of data

Mean = 966+70.5/14+1

Mean = 1036.5/15

Mean = 69.1

Therefore, the mean height of the 15 students in the class is 69.1

4 0
4 years ago
Select the polynomial that is a perfect square trinomial.
gregori [183]

none of the above

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8 0
4 years ago
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