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Elden [556K]
3 years ago
5

HURRY! what is x? |4x + 7| +11=14

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
8 0

Answer:

20

Step-by-step explanation:

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3) 6n– 7n – 5m?n – 7n + 2m + 6mn - 7n + 2m + 6m?n
Drupady [299]

Answer:

1)-n-5m

2)-13n+10m+6mn

Step-by-step explanation:

1) (6n-7n)-5m= -n-5m

2)(n-7n-7n)+(2m+2m+6m)+6mn= -13n+10m+6mn

5 0
3 years ago
A cube has a surface area of 294sq. In. What is the length of the sides<br> 49<br> 7<br> 6.6
arlik [135]

Answer:

The length of the sides is <u>7 In</u>.

Step-by-step explanation:

Given:

A cube has a surface area of 294 sq. In.

Now, to find the sides.

Let the side be a

Putting the formula of area to get the length of side:

Area = 6(side)^2

294=6a^2

<em>Dividing both sides by 6 we get:</em>

49=a^2

<em>Using square root on both sides we get:</em>

7=a

Side = 7 In.

Therefore, the length of the sides is <u>7 In</u>.

5 0
3 years ago
Which property explains why these two expressions are equal?
STALIN [3.7K]
The correct answer is letter S
5 0
3 years ago
How do you substitute x+y=2 3x+2y=5
Monica [59]
Here's how you solve this.  So, x+y=2, right?  Let's isolate x.  x+y-y=2-y.  x=2-y.  NOW, if x=2-y, in 3x+2y=5, we can REPLACE x with 2-y and use it to solve for y!  3x+2y=5.  3(2-y)+2y=5.  (3*2)+(3*-y)+2y=5.  6+(-3y)+2y=5.  6+(-y)=5.  6+(-y)-6=5-6.  -y=-1.  -y/-1=-1/-1.  y=1.

So, if y=1, we can substitute that back into either equation--but let's go with the easier one, x+y=2.  x+1=2.  x+1-1=2-1.  x=1.  1+1=2, so that works; let's check the other equation.  3(1)+2(1)=5.  3+2=5.  5=5.  That's correct!

Answer: x=1, y=1
4 0
3 years ago
Read 2 more answers
What is the recursive rule for the following arithmetic sequence?<br><br> -7, -4, -1, 2, 5, …
Ludmilka [50]

Answer:

Recursive rule for arithmetic sequence = an = a[n-1] + 3

Step-by-step explanation:

Given arithmetic sequence;

-7, -4, -1, 2, 5, …

Find:

Recursive rule for arithmetic sequence;

Computation:

Let a1 = -7

So,

⇒ a2 = a1 + 3 = -4

⇒ a3 = a2 + 3 = -1

⇒ a4 = a3 + 3 = 2

⇒ a5 = a4 + 3 = 5

So, the recursive formula is

⇒ an = a[n-1] + 3

Recursive rule for arithmetic sequence = an = a[n-1] + 3

6 0
3 years ago
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