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ki77a [65]
3 years ago
14

Suppose you have 30 CDs. You know that you have 11 more CDs than your friend. Write and solve an equation to find the number of

CDs your friend has. A. n – 11 = 30; 41 B. 30 + n = 11; –19 C. 30 + 11 = n; 41 D. n + 11 = 30; 19
Mathematics
2 answers:
shutvik [7]3 years ago
4 0
The Correct answer is D. <span>n + 11 = 30; 19</span>
gulaghasi [49]3 years ago
3 0
You have 30 more cds than your friend 
So it would be your friends CDs + 11 = your CDs, which is 30
n + 11 = 30
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Zielflug [23.3K]
C = 3
You isolate the variable by dividing each side by factors that don’t contain the variable
5 0
3 years ago
Carmela saves 8% of her weekly earnings. She earned $25 last week. How
balu736 [363]

Answer:

$2

Step-by-step explanation:

So, 8% is the same as 8/100 or .08. I'll be using .08 to make things more simple. Now, if she earned $25 last week and she saves 8% of it then, the equation to find how much she saved would be 25 times .08. Simply plug that into a calculator to get the answer $2.

8 0
3 years ago
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Which ordered pair (x, y) satisfies the system of equations? 1/2 x − 1/4 y = 10 1/8 x − 1/8 y = 19
zlopas [31]

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Step-by-step explanation:

5 0
2 years ago
Bruce has a rope that is 21 feet long he needs to cut the rope into 1/5 long peices. How many strips can Bruce cut from his rope
dybincka [34]

Bruce has a rope that is 21 feet long he needs to cut the rope into 1/5 long pieces.

The length of the rope = 21 feet

the length of each strip = \frac{1}{5}

We need to cut the rope 21 feet into \frac{1}{5} strips

To find the number of strips we divide 21 feet by the length of the strip

\frac{21}{\frac{1}{5}} = 21 * \frac{5}{1} = 105

105 strips can Bruce cut from his rope.

7 0
3 years ago
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In this truss bridge, AAOB ABDC. AO=5 meters, BD=10 meters, AB=5 meters. What is the length of BC? A. 5 m B. 8 m C. 10 m D. 15 m
Olenka [21]

Consider \Delta AOB\cong \Delta BDC.

Given:

\Delta AOB\cong \Delta BDC, AO=5\ m,BD=10\ m, AB=5\ m.

To find:

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Solution:

We have,

\Delta AOB\cong \Delta BDC

We know that the corresponding parts of congruent triangles are congruent (CPCTC).

AB=BC                   (CPCTC)

5\ m=BC

The length of BC is 5 m. Therefore, the correct option is A.

5 0
2 years ago
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