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mart [117]
4 years ago
11

Fill in the blanks. Please answer as shown in the boxes. Please fill out all boxes. Will mark brainiest if correct

Mathematics
1 answer:
jarptica [38.1K]4 years ago
6 0

Answer:

(5x + 7y)² = 25x² + 70xy + 49y²

Step-by-step explanation:

(5x + 7y)² = 25x² + 70xy + 49y²

Because,

(5x + b)² = (5x)² + 2(5x)(b) + b²

2(5x)(b) = 70xy

b = 7y

b² = (7y)² = 49y²

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Time traveler can take 5 books with him and he has 79 books to choose from how many different ways can the books be selected
AveGali [126]

<u>We are given:</u>

The time-traveller has 79 books, but he can only take 5 books

since we need to find the number of ways he can choose 5 books, we know that the order in which he takes the books does NOT matter

Hence, we will use combination

<u>Finding the number of ways:</u>

Since we will use combination, ₇₉C₅

We know that the formula for combination is  (n!) / (r!(n-r)!)

₇₉C₅  = 79! / 5!(74!)

₇₉C₅ = 22,537,515

Therefore, the time traveller can choose 5 books in 22,537,515 different ways

8 0
3 years ago
0.39/0.75 as a decimal​
MissTica

Answer:

0.52

Step-by-step explanation:

Divide.

5 0
4 years ago
Read 2 more answers
Chicago, Illinois has an elevation of 600 feet. Seely, California is -200 feet. What does 0 represent in the context of this sit
tatyana61 [14]

Answer:

Sea level

Step-by-step explanation:

In geography, 'Elevation' is measured in relation to sea level, so sea level would be zero.

Thus, Chicago is 600 feet above sea level and Seely, California is 200 feet below sea level.

If there were nothing but flat land all the way from Seely to the ocean, sea water would come in and cover Seely. Fortunately for the people in Seely. California's coastal mountain range is between the town and the ocean, so that does not happen.

3 0
3 years ago
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Karen has 3 1/4 feet of ribbon she's uses 1 3/4 feet to wrap gifts
astra-53 [7]

what is the question asking? all you said was that Karen has 3 1/4 feet of ribbon and she uses 1 3/4 feet to wrap gifts

7 0
3 years ago
You have two pairs of sneakers. One pair of sneakers is currently worth $80 and its value increases by $5 per month. The other p
mafiozo [28]

Answer:

I don't know but here's an example.

Step-by-step explanation:

Here's a word problem to start with.

Jane spent $42 for shoes. This was $14 less than twice what she spent for a blouse. How much was the blouse?

First, identify what the question is asking for.

Jane spent $42 for shoes. This was $14 less than twice what she spent for a blouse . How much was the blouse?

Next, identify the numbers.

Jane spent $42 for shoes. This was $14 less than twice what she spent for a blouse . How much was the blouse?

Next, identify the key words. These include add, subtract, remove, spend, earn, less, more, times, twice, half, etc.

Jane spent $42 for shoes. This was $14 less than twice what she spent for a blouse . How much was the blouse?

Finally, convert everything into an equation.

42

=

2

⋅

blouse

−

14

Now, solve the equation.

56

=

2

⋅

b

l

o

u

s

e

b

l

o

u

s

e

=

28

The blouse was 28 dollars.

3 0
3 years ago
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