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Rus_ich [418]
3 years ago
13

In the function f(x) = 5(x2 − 4x + ____) + 15, what number belongs in the blank to complete the square?

Mathematics
2 answers:
Georgia [21]3 years ago
5 0
If you would like to find the number which belongs in the blank to complete the square, you can calculate this using the following steps:

f(x) = 5(x^2 - 4x + a) + 15
a ... the number = ?

<span>x^2 - 4x + a = (x - 2)^2 = x^2 - 4x + 4
</span>a = 4

The correct result would be 4.
gavmur [86]3 years ago
5 0

Hey there!

I took the test, and I can confirm that 4 is the CORRECT answer

xXxGolferGirlxXx

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Simplify: -c - 8(4c - 5) - (-18c + 3)
d1i1m1o1n [39]

Answer:

-15c + 2

Step-by-step explanation:

you start by multiplying the coefficients of the parentheses to the numbers inside which gives you

- c - 32c + 5 + 18c - 3

then you simply just group together the like numbers. all "c" 's go together and everything without a "c" goes together

- 1c - 32c + 18c= -15c

5 - 3 = 2

the final answer simplified is

-15c + 2

6 0
3 years ago
Factorise completely
Andreyy89
1. Number that adds up to -12 and multiplied by the same # that gives u -13. Set it up like this because both are negative so, u need 1 negative and 1 positive.
(x-13)(x+1)

2. Same rule applies. GCF
8y(4y+1)

3. (x+3)(x-3)
4 0
3 years ago
Can somebody help me?
Degger [83]
A percentage
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5 0
3 years ago
The product of x and y increased by 2
nataly862011 [7]

Answer:

x*y+2

Step-by-step explanation:

6 0
3 years ago
22. If the measure of angle 2 is 35°, what is the measure of angle 6?
ArbitrLikvidat [17]

Answer:a.35 degrees b. 145 degrees

Step-by-step explanation: angle 2 and angle 6 are equal they are corresponding

Angle 2 and angle 8 are supplementary they equal 180. So 180-35=145

6 0
3 years ago
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