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PolarNik [594]
3 years ago
10

Simplify 3x+6=18, please

Mathematics
2 answers:
Fiesta28 [93]3 years ago
7 0

Answer:

x = 4

Step-by-step explanation:

Step 1: Write out equation

3x + 6 = 18

Step 2: Subtract 6 on both sides

3x = 12

Step 3: Divide both sides by 3

x = 4

k0ka [10]3 years ago
3 0

Answer:

4

Step-by-step explanation:

3x +6 =18

3x =18 - 6

3x =12

x =12 :3

x =4

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Triangle ABC is congruent to triangle DEF. If DE = 41, EF = 23, DF = 36, and AC = 5x - 9, what is x? Round to the nearest tenth.
Aloiza [94]

Similar shapes may or may not be congruent.

The value of x is (a) 9.0

The corresponding sides are:

  • AB and DE
  • BC and EF
  • AC and DF

The side lengths are:

\mathbf{DE = 41}

\mathbf{EF = 23}

\mathbf{DF = 36}

\mathbf{AC = 5x - 9}

Because the shapes are congruent, and AC corresponds to DF.

This means that:

\mathbf{AC = DF}

So, we have:

\mathbf{5x - 9 = 36}

Collect like terms

\mathbf{5x = 9 + 36}

\mathbf{5x = 45}

Divide both sides by 5

\mathbf{x = 9.0}

<em>Hence, the correct option is (a) 9.0</em>

Read more about congruent triangles at:

brainly.com/question/12413243

5 0
3 years ago
Factor completely 169x2 _ 64
makvit [3.9K]
A^2 - b^2 = (a - b)(a + b)
169x^2 - 64 = (13x - 8)(13x + 8)
6 0
3 years ago
What is that answer to this question?
Hoochie [10]

Answer:

5/13

Step-by-step explanation:

Cosine ratio for an angle is defined as the ratio of Adjacent side to Hypotenuse.

We have to find the cosine ratio for angle F. The side adjacent to angle F is side GF and the hypotenuse of the triangle is side FH. The side opposite to the right angle is always the hypotenuse.

So, we can write:

\textrm{Cosine Ratio}=\frac{Adjacent}{Hypotenuse}\\\\ \textrm{Cosine Ratio of F}=\frac{FG}{FH} \\\\ \textrm{Cosine Ratio of F}=\frac{5}{13}

Therefore, the cosine ratio of angle F is 5/13

6 0
3 years ago
Read 2 more answers
Help!! Will Upvote!!
butalik [34]
With the same base of 3, multiplying numbers with different exponents means that you add the exponents. Making your final answer 3^(2+4+6), or 3^12.
7 0
3 years ago
Please help me I am so confused
aivan3 [116]

Answer:

67.65%

Step-by-step explanation:

Look for the difference between the two amounts:

$510-$165=$345

$345 is the amount that was "discounted" originally, then look for the % "discount" which is:

(345/510) × 100%= 67.65%

7 0
3 years ago
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