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Westkost [7]
3 years ago
15

Factor x2 – 8x + 15. Which pair of numbers has a product of ac and a sum of b?

Mathematics
1 answer:
Troyanec [42]3 years ago
7 0
-5 and -3 are your numbers. 
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Help me with this question please!! Show all work
Valentin [98]
The answer is 439.

3+(1/(7+1/15) = 333/106

333+ 106 = 439.
8 0
2 years ago
Question in the middle please
oksian1 [2.3K]
So it wants you to write two equations, one for the number of fruit and another for the money spent. gather your important information first:

20 fruits for $11.50
apples cost $0.50
bananas cost $0.75

let's do the cost equation first. it's $0.50 per apple, so 0.50a, and $0.75 per banana, so 0.75b. the total cost is $11.50. put all of this information together:

0.50a + 0.75b = 11.50  ... so, the cost of apples bought plus the cost of bananas bought equals 11.50

note what your variables stand for. a represents the number of apples, b represents the number of bananas. to write an equation for how many fruits bought, you simply have to add these two and set them equal to 20 (the total number of fruits bought).

a + b = 20
and your other equation
0.50a + 0.75b = 11.50

these are your two equations. to solve the system of equations, you first want to get one variable alone; the first equation will be easier.

a + b = 20
a = 20 - b

now take this equation and plug it into the second equation.
0.50(20 - b) + 0.75b = 11.50 ... you'll notice that you only have one variable left: b. solve for it. the first step is to distribute 0.50 to the parentheses
10 - 0.50b + 0.75b = 11.50 ... combine like terms
10 + 0.25b = 11.50 ... subtract 10
0.25b = 1.5 ... divide by 0.25
b = 6

6 bananas were purchased. plug this back into an equation to find out how many apples were purchased.

a + 6 = 20 ... subtract 6
a = 14

14 apples and 6 bananas were bought.
3 0
3 years ago
The parallelogram whose diagonals are equal in length and not perpendicular is
mamaluj [8]

Answer:

Rectangle.

Step-by-step explanation:

If the diagonals are equal then the parallelogram is a rectangle. They are also equal in length in a square, which can be regarded as a special type of rectangle - but in this case the diagonals are perpendicular. They are also perpendicular in a rhombus.

4 0
3 years ago
Help me please with this math question
MatroZZZ [7]
34 34/100. 17

27. 27/100. 13.5

21. 21/100. 10.5

18. 18/100. 9

I think this is right!
3 0
3 years ago
The difference between 16.03 and 7.385 is …….
dolphi86 [110]
The difference is 8.645!!!!!!
6 0
2 years ago
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