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s2008m [1.1K]
3 years ago
11

Factor Please help me I will mark as brainliest

Mathematics
2 answers:
masya89 [10]3 years ago
8 0

Answer: Heyaa! :D

Your Answer Is... 9

Step-by-step explanation:

<em>Since both terms </em><em>are</em><em> perfect squares, factor using the difference of squares formula, </em>

a²−b²=(a + b)(a − b) where a = B and

b = 9.

(B + 9)(B − 9)

aalyn [17]3 years ago
6 0

Answer:

hope this will help you

Step-by-step explanation:

b { }^{2}  - 81 = 0 \\ b {}^{2}  = 81 \\ b =  \sqrt{81} \\  b = 9

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How do you do distributive property
skad [1K]
3(2 + x)
3(2) + 3(x)

<span>With the distributive property, you can multiply numbers inside parenthesis by numbers outside a parenthesis.
</span>
x(a + 1 + 4)
x(a) + x(1) + x(4)
ax + x + 4x

The number must be distributed across every term.
3 0
3 years ago
Find the value of a. HELP PLEASE!!
navik [9.2K]
<h2>Greetings!</h2>

Answer:

a = 17

Step-by-step explanation:

Because all the lines are congruent (same length) as indicted by the lines, this means that every angle is the same.

180 ÷ 3 = 60

So every angle is 60°

This also means that:

4a - 8 = 60

Isolate the 4a by moving the -8 over to the other side, making it a +8:

4a = 60 + 8

4a = 68

Now simply divide both sides by 4 to get the value of 1a:

\frac{4a}{4} = \frac{68}{4}

a = 17

<h3>So a = 17 </h3><h3 /><h2>Hope this helps!</h2>
6 0
4 years ago
What is the value of X
ASHA 777 [7]
The answer is 21, 21 is the value of x
6 0
3 years ago
Y = 7x-3<br> Rearrange the equation to make x the subject
EleoNora [17]

Step-by-step explanation:

y = 7x - 3

To make x the subject, you need to isolate it. (Get x by itself)

y = 7x - 3

Add 3 on both sides...

y + 3 = 7x

Divide by 7 (Maybe your teacher wants 7x = y = 3 but if she doesn't and wants x completely by itself here's the answer)

x = y/7 + 3/6

6 0
3 years ago
A model train has a scale of 1 in : 3in. if the real train is 12ft tall then how tall is the model train
Gelneren [198K]

If the ratio of a model train to a real train exists 1:3 and the real train exists 12 feet then the model train exists 3 feet long.

<h3>How to estimate the ratio of the model train?</h3>

Given that the model train contains a scale of 1: 3 and the real train exists 12 feet tall.

The ratio indicates how many times one number has another number.

A ratio exists as the relationship in quantity between two things.

It conveys the quantity of one thing in words of another.

The ratio of a model train to a real train exists at 1 inch :3 inches.

Height of model train = 12 * 1/4

Height of model train = 3 inches

Therefore, the ratio of a model train to a real train exists 1: 3 and if the real train exists 12 feet then the model train exists 3 feet long.

To learn more about ratios refer to:

brainly.com/question/2328454

#SPJ4

4 0
2 years ago
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