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ira [324]
2 years ago
7

Which of these is a simplified form of the expression –b – 2(2b + 5)?

Mathematics
2 answers:
Kay [80]2 years ago
5 0
The answer to this question is definitely C.
monitta2 years ago
3 0

Answer:

c

Step-by-step explanation:

-b -4b - 10

-5b - 10

hence c is the answer

You might be interested in
If AB,BC, and AC are 7 inches, 9 inches, and 10 inches, respectively, and XY is 9 inches, find XZ
Ket [755]

Answer:

d) 12.9 in

Step-by-step explanation:

3)

ΔABC ≅ ΔXYZ

AB/AC = XY/XZ

7/10 = 9/XZ

XZ = 10 *9/7  

XZ = 12.9

Answer:

d) 12.9 in

5 0
3 years ago
Divide the following fractions and reduce to lowest terms 2/3 divided by 4/5
pshichka [43]
Well to divide 2 fraction you first have to find a least common number between the 2 bottom numbers in the fractions, we know automaticall that 15 fits in both the 3 and the 5. now u have to find out what to multiply by each number to get 15, for example what number do you multiply by 3 to get 15?? well it will be 5, so go ahead and multiply it by the fraction (note that what you do  in the bottom you have to do in the top) this will give you 10/15, because I multiplied the top and bottom number by 5... lets try the other one what number do you multiply by 5 to get 15?? well it will be 3 so go ahead and multiply that to get 12/15.. now add the top numbers (note that the bottoms always stay the same, you never add or subtract them) when you do you will get 22/15, now you have to see if you can simplify it any further in this case you can't so your final answer is 22/15

Hope this helps
5 0
3 years ago
Please help<br> Find the arc length of Arc AB.<br><br> Leave your answer in terms of pi.
daser333 [38]
The formula is L = 2 pi r * (angle/360). We have what we need to figure it out. Do the work inside the () first. 72/360 = .2. So we have 2 pi (5) (.2). Do all that multiplication to get L = 2pi
5 0
3 years ago
Come help a sister out on 2 geometry questions please
PSYCHO15rus [73]
1- question

Data:
width = 6 cm
length = 5 cm
height = 8 cm


<span>First we will find the area of ​​the base that is square, we have:
</span>
Ab = 6 * 5 
Ab = 30 cm²

<span>Now we will calculate the volume of a square pyramid, we have:
</span>Formula: V =  \frac{1}{3}  A_{b}  *h

Solving:
V = \frac{1}{3} A_{b} *h
V =  \frac{1}{3}*30*8
V =  \frac{240}{3}
\boxed{\boxed{V = 80\:cm^3}}\end{array}}\qquad\quad\checkmark

Answer:
D) 80 cm³

2- question:

Data:
width = 7 in
length = 7 in
height = 9 in


First we will find the area of ​​the base that is square, we have:

Ab = 7 * 7 
Ab = 49 in²

Now we will calculate the volume of a square pyramid, we have:
Formula: V = \frac{1}{3} A_{b} *h

Solving:
V = \frac{1}{3} A_{b} *h
V = \frac{1}{3}*49*9
V = \frac{441}{3}
\boxed{\boxed{V = 147\:in^3}}\end{array}}\qquad\quad\checkmark

Answer: 
C) 147 in³

3 0
3 years ago
If 3x+8=3x+8 is it one solution or no solution
Nadusha1986 [10]

Answer:

infinite solutions

Step-by-step explanation:

3x+8=3x+8

Subtract 3x from each side

3x-3x+8=3x-3x+8

8=8

Since this is always true, we have infinite solutions


4 0
2 years ago
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