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gavmur [86]
3 years ago
13

Please give answers for all

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
6 0

Answer:

Your answers are correct except the 7th

7th Answer : 6 + 5a

Step-by-step explanation:

12)  2a - 8 = 14 ⇔ 2a = 22 ⇔ a = 11

13)  2(a + 3)

16)  3x - 1 = 7 ⇔ 3x = 8 ⇔ x = 8/3

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Factories <br>(a+b)^3+8c^3​
Rom4ik [11]

Answer:

(a + b + 2c)(a² + 2ab + b² - 2ac - 2bc + 4c²)

Step-by-step explanation:

Given

(a + b)³ + 8c³ ← this is a sum of cubes and factors in general as

a³ + b³ = (a + b)(a² - ab + b²)

Thus

(a + b)³ + 8c³

= (a + b)³ + (2c)³

= (a + b + 2c)( (a + b)² - 2c(a + b) + (2c)² )

= (a + b + 2c)(a² + 2ab + b² - 2ac - 2bc + 4c²)

8 0
3 years ago
What are the coordinates of Z?
vaieri [72.5K]

Answer:

d I'm pretty sure that's what is is my math is 10 out of 10

8 0
3 years ago
Teresa is building a scale model of the JP Morgan chase Tower in Houston.In her scale model, 1.5 inches represents 61 meters. Si
Jet001 [13]

Answer:

Teresa should build 7.5 inches model.

Step-by-step explanation:

Consider the provided information.

Teresa is building a scale model of the JP Morgan chase Tower in Houston.

Her scale model, 1.5 inches represents 61 meters.

The actual building is 305 meters tall,

First find how many 61's are there in 305.

For this divide 305 by 61.

\frac{305}{61}= 5

Actual building is 5 times taller than 61. Thus the model should be 5 times taller than 1.5.

multiply 1.5 with 5 gives us:

1.5\times 5=7.5

Hence, Teresa should build 7.5 inches model.

7 0
3 years ago
Please take a look at the question. Please explain and type your explaination. Please make it quick as possible. Thankyou!
Firlakuza [10]

Answer:

Yes, it's true

Step-by-step explanation:

A fraction is a part of a whole number for example 1/2. 1/2 is a half of one whole piece and if you multiply it into any whole number whether it's 2,4,6,8,10...... basically, if you multiply a fraction less than one with a non-zero whole number, it will always be less than the whole number it's being cut into smaller pieces. However, if the fraction is greater than 1, we would technically have an answer greater than the whole number product, just something to remember.

5 0
3 years ago
What is the geometric sequence?<br><br> 2,3,4.5?
kykrilka [37]
An=a12n-1 or an=(1)2n-1
7 0
3 years ago
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