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aliina [53]
2 years ago
11

Please Help Me!!!! qwq

Mathematics
1 answer:
Semmy [17]2 years ago
6 0

Answer:

We add 25 and subtract 25 to complete the square.

(x+5)^{2}-38=0\\ is the equation we get.

Step-by-step explanation:

x^{2} +10x-13=0\\x^{2} +10x+25-13-25=0\\(x+5)^{2}-38=0\\

So, we're adding 25-25 to complete the square.

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There are 70 historical fiction books in the school library. Historical fiction books make up 1/10 of the library's collection.
Gre4nikov [31]

Answer:

There are 700 books in Library Collections.

Step-by-step explanation:

Given:

Number of historical books = 70

The equation used to find the totals number of books in library collection.

\frac{1}{10}b = 70

where b⇒ Total number of books in library collections.

We need to find the Total number of books in library collections.

Solution:

\frac{1}{10}b = 70

Now by solving the above equation we get;

First we will multiply both side by 10 we get;

\frac{1}{10}b \times 10= 70\times 10\\\\b =700

Hence there are 700 books in Library Collections.

6 0
3 years ago
find the height and of a parallelogram if its base is 35 centimeters and its area is 700 square centimeters
OLEGan [10]
Hello!

We know what the base and area of the parallelogram are, but the height is still unknown. We also know that the formula for the area is: 

A = bh

Meaning we multiply the base by the height to find the area. The opposite of multiplication is division, so we must divide the area by the base to find the height. (We work in the opposite way).

B = a / h 

B = 700 cm² / 35 cm

B = 20 

We can double check by multiplying 20 by 35, and the product should result in 700. 

20 * 35 = 700

Therefore, the height of the parallelogram is 20 centimetres. 
5 0
3 years ago
If gas costs $2.19 per gallon, how many whole gallons of gas could you buy with $17.00? (Make sure to answer with a whole number
ankoles [38]

Answer:

2.19*17.00

=37.23

=$37

Step-by-step explanation:

4 0
2 years ago
Diana ordered a shipment of 48 sun hats for the store she owns. Of the 48 hats she ordered, about 20% were pink. How many of the
kotegsom [21]

Answer: If the answer was a half then I would say about 9.6 but if the answer if a whole then the whole would be 10 but doing the math out the answer is 9.6. Have a wonderful day

7 0
3 years ago
Read 2 more answers
Find the value of x (please help)
notka56 [123]

Answer:

ok

Step-by-step explanation:

5 0
3 years ago
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