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natka813 [3]
3 years ago
13

Look at the picture and plzz help me and also pick from the boxed sentences

Mathematics
1 answer:
poizon [28]3 years ago
3 0
<h2>Hello!</h2>

The answers are:

3. Addition property of equality

4. 6x-7+7=12+7 - Simplification

7. x=\frac{19}{6}

<h2>Why?</h2>

To solve the problem, we need to start with the result of the second step:

6x-7=12

So,

For the step 3:

Then, for the 3rd step, we have to apply the addition property of equality.

The addition property of equality states that if we add a term to one side of the equality, we need to add it to the other side of the equality, in order to not alterate the equality.

Then, applying the property, we have:

6x-7=12

Adding 7 to both sides, we have:

6x-7+7=12+7

For the step 4:

Now, for the 4th step, we have to simplify the expression:

6x-7+7=12+7

Then, simplifying, we have:

6x=19

For the step 7:

Simplificating, we divide each side of the equality by 6:

\frac{6x}{6}=\frac{19}{6} \\\\x=\frac{19}{6}

Have a nice day!

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(३) एक शब्द में उत्तर लिखो:
o-na [289]

करना चाहिए। वे तुम्हें नष्ट कर देंगे।

आप कोई मौका नहीं खड़े हैं। तुम

उसके हाथ पर मर जाओगे। पछताना

8 0
3 years ago
Which of the following is a perfect square trinomial?
shutvik [7]

Answer:

A.

Step-by-step explanation:

Take a look at what happens when squaring either of these...

(ax-by)^2=(ax-by)(ax-by)=a^2x^2-2abxy+b^2y^2\\\\(ax+by)^2=(ax+by)(ax+by)=a^2x^2+2abxy+b^2y^2\\

Notice a couple of patterns.

1.  The last term has a positive coefficient.  That rules out answer choices C and D.

2.  The coefficient of the middle term is either +2ab \text{ or } -2ab .  So what are <em>a</em>  and <em>b</em>?  <em>a</em> is the square root of the x^2 term and <em>b</em> is the square root of the y^2 term.

25x^2 \Rightarrow a=5\\\\9y^2 \Rightarrow b=3\\\\ab=15\\\\2ab=30

The middle coefficient needs to be either +30 or -30.  The answer is choice A.

5 0
2 years ago
Solve for x: −3x + 3 &lt; 6<br><br> x &gt; −1<br> x &lt; −1<br> x &lt; −3<br> x &gt; −3
Misha Larkins [42]

Answer:

x > -1

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
How do you estimate 175.32 ÷ 3 =
geniusboy [140]

Answer:

  ≈ 58

Step-by-step explanation:

Estimation usually means you want an answer good to one or maybe two significant figures. That usually means you want to round the numbers involved to one or two significant figures.

Doing that here transforms the problem to 180/3 = 60, an answer with one significant figure.

You can improve the estimate a bit by recognizing that it is a little high (the numerator is higher than 175.32, but the denominator is the same). Since the numerator is high by about 5, the estimate is high by about 5/3 or a little less than 2. A closer estimate will be 60 - 2 = 58.

_____

The degree to which you refine the estimate will depend on the error requirements you have. Certainly an estimate of 60 is within 10% of the true value, so is "close enough" for many purposes.

7 0
3 years ago
A model satellite has a scale of 1 in: 6 ft.
insens350 [35]

Answer:

B) 18 ft

Step-by-step explanation:

The scale is 1 in. model : 6 ft real.

6/1 = 6

To go from model size to real size, multiply the model size by 6 and change from inches to feet.

3 in. model = 3 × 6 ft = 18 ft

5 0
1 year ago
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