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liberstina [14]
3 years ago
15

I have been having trouble with this one for a while please help

Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0

The answer is A.

A is correct because...

(7z+23)-(15z+9)       There's an invisible positive 1 in front of (7z+23). Distribute.

7z+23-(15z+9)         Distribute the negative sign among 15z and 9.

7z+23-15z-9            Now, combine the like terms, 7z, and -15z. 7z - 15z

-8z+23-9                 Combine the like terms, 23 and -9. 23 - 9

-8z +14


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B. Lance is 39 years old. Ted is 22 years old.
Rudiy27

Answer:

28 years

Step-by-step explanation:

Sum of the years of Lance , Ted, Rosalinda = 39 + 22 +45 = 106 year

Sum of the years of Lance , Ted, Rosalinda & Erik = 33.5*4 = 134.0 year

Age of Erik = 134 - 106 = 28 years

8 0
3 years ago
Pls help me i need to fill in the boxes that dont have anything in them but i aldo need to fill in the one that says "A="​
Irina18 [472]

Answer:

Area= 32 (formula is: length x width)

Perimeter= 8 + 4 + 8 + 4= 24

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A circular swimming pool has a radius of 15 ft. There is a path all around that pool that is three feet wide.
Romashka-Z-Leto [24]

Answer:

Circumference(C) of the circle is given by:

C = 2 \pi r

where, r is the radius of the circle.

As per the statement:

A circular swimming pool has a radius of 15 ft.

⇒radius of the pool(r) = 15 ft

There is a path all around that pool that is three feet wide.

⇒radius of the outer edge of the path around the pool(r') = 15 +3 = 18 ft

Substitute these in the formula we have;

C = 2 \pi r'

⇒C = 2 \cdot 3.14 \cdot 18 = 113.04 ft

Therefore, the circumference of the outer edge of the path around the pool is, 113.04 ft

6 0
4 years ago
Read 2 more answers
This circle is circumscribed about quadrilateral ABCD. What is the value of x?
worty [1.4K]

Answer:

The value of x is 56°

Step-by-step explanation:

Given that opposite angles in a cyclic quadrilateral is add up to 180°. So in order to find x, you have to write an expression in terms of x :

97  + x + 27 = 180

x + 124 = 180

Next you have to solve it by substracting 124 to both sides :

x + 124 - 124 = 180 - 124

x = 56

6 0
3 years ago
What does negative 9 equal positive 27
Ghella [55]

Answer:

Step-by-step explanation:

Formula 27, by 4

6 0
3 years ago
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