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Savatey [412]
3 years ago
7

A triangle has the lengths of (10a+9) centimeter,(8a—3) centimeters and (10b+7). Which expression represents the perimeter in ce

ntimeters of the triangle
Mathematics
1 answer:
marysya [2.9K]3 years ago
6 0

Answer:

P = (18a+10b+13) cm

Step-by-step explanation:

Given that,

A triangle has the lengths of (10a+9) cm, (8a—3) cm and (10b+7) cm.

We need to find an expression that represents the perimeter of the triangle.

Perimeter = sum of all sides

P = (10a+9) + (8a-3) + (10b+7)

Taking like terms together,

P = (10a+8a)+10b+(9-3+7)

= 18a+10b+13

Hence, the epresssion for the perimeter is (18a+10b+13) cm.

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Can someone help me with this
Alexxandr [17]

Answer:

B

Step-by-step explanation:

the perimeter (P) of a rectangle is calculated as

P = 2l + 2w ( l is the length and w the width ) , then

P = 2(3\sqrt{15} ) + 2(\sqrt{15} ) ← distribute both parenthesis )

   = 6\sqrt{15} + 2\sqrt{15}

   = 8\sqrt{15}

5 0
2 years ago
Katherine v
maks197457 [2]

Answer:

13/102

Step-by-step explanation:

In a standard deck of 52 cards, there are 13 black spades, 13 black clubs, 13 red diamonds and 13 red hearts. There are 26 <u>black </u>cards in the deck of 52 cards.

Probability of drawing a black card = 26/52 = 1/2

Suppose we drew the black card. There are now <u>only 51</u> cards left in the deck. ALL of the hearts are still there - <u>13</u> of them.

Probability of drawing a heart from this deck of 51  = 13/51

In general, for the probability of event A <u>and then</u> event B, we multiply.

1/2 x 13/51 = 13/102

6 0
3 years ago
Select all the equations where z= 5 is a solution. <br> Na
kolezko [41]

Answer: A, D, & E

Step-by-step explanation:

they are all correct when 5 is plugged in.

5 0
3 years ago
What conversion factor would you use to solve thikproblem?
ira [324]

Conversion factor is the term that is to be multiplied to a variable when converting between units. The conversion factor is: 2.20lbs /kg

Given that:

54kg \to x\ lbs

From standard unit of conversion:

1kg = 2.20lbs

So, we have:

54kg \to x\ lbs

1kg = 2.20lbs

Cross multiply

54kg \times 2.20lbs = xlbs \times 1kg

Divide both sides by 1kg

54kg \times 2.20lbs /kg= xlbs

Rewrite as:

x = 54kg \times 2.20lbs /kg

Hence, the conversion factor is: 2.20lbs /kg

Read more about conversion factors at:

brainly.com/question/6988886

8 0
2 years ago
A school choir has 36 members. There are three times as many underclassmen as seniors. How many seniors are in the choir? 9 seni
amm1812
There are 9 seniors.

Although there are several ways of solving this problem, I just did what was easiest for me in my head. I divided 36 by 4, which gave me 9.
3 0
3 years ago
Read 2 more answers
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