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Vlad [161]
3 years ago
8

Factor problems 18-20

Mathematics
1 answer:
Goryan [66]3 years ago
5 0

Answer:

18. C (3x -1)(x +8)

19. A (x +1)(x +3)

20. D (3x -2)(x -2)

Step-by-step explanation:

Since you know how to multiply binomials, you can easily check any of the offered answers to see if they work.

(ax +b)(x +c) = ax² +(b+ac)x +bc

___

18. All of the constants except for choice D multiply to give -8, so you must check the middle term:

A b+ac = 1-24 = -23 ≠ 23

B b+ac = -8+3 = -5 ≠ 23

C b+ac = -1+24 = 23 . . . . . this is the answer

D already eliminated because bc = 8 ≠ -8

__

19. The only answer with constants that multiply to give +3 is A.

__

20. The only answer with constants that multiply to give +4 is D.

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Jordon is looking for a job. She found one job that gave a $100 bonus plus paid $25 per hour. Another job gave no
maria [59]
It would be 20 hrs because if you put them both in an equation aka y=25x+100 and y=30x just plug in numbers into the x until they both have the answer which in this case is 20
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7,24,25. 7 , 23,24 7, 25,26 <br> Which of the following will form a right triangle
Andru [333]
We know that
In <span>a right triangle
c</span>²=a²+b²
where
a and b are the legs of triangle 
c is the hypotenuse of the triangle
so

case 1)7,24,25
25²=7²+24²
25²-----> 625
7²+24²----> 625
625 is equal to 625----------> <span>form a right triangle
</span>
case 2) 7,23,24
24²=7²+23²
24²------> 576
7²+23²-----> 578
576 is not 578-------------> not form a right triangle

case 3) 7,25,26
26²=7²+25²
26²-----> 676
7²+25²-----> 674
676 is not 674----->  not form a right triangle

the answer is
7,24,25 form a right triangle



8 0
3 years ago
What would the answer for this question be
Yakvenalex [24]

THE ANSWER IS <u>SIN</u><u> </u><u>C</u><u> </u><u> </u><u>SOH</u><u> </u><u>OPPosit</u><u> </u><u>out</u><u> </u><u>of</u><u> </u><u>hypo</u>

5 0
3 years ago
!!! 25 POINTS HELP PLS
weqwewe [10]

Answer:

Option (3)

Step-by-step explanation:

Given functions are,

f(x) = \frac{1}{4^x}

g(x) = log(2x)

By using a graphing utility we can draw the graphs of the given system of equations.

Common points of the graph will be the solutions of the equations,

From the graph attached,

Solution of the functions is → (0.937, 0.273)

                                             → (0.9, 0.3)

Option (3) will be the answer.

3 0
2 years ago
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