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barxatty [35]
2 years ago
7

Express the product (2x-1)(3x+4) as a trinomial

Mathematics
2 answers:
Stels [109]2 years ago
6 0
You have to FOIL (First, Outer, Inner, Last) that.
First: 2x • 3x = 6x^2
Outer: 2x • 4 = 8x
Inner: -1 • 3x = -3x
Last: -1 • 4 = -4

Answer: 6x^2 + 5x - 4
mario62 [17]2 years ago
5 0

Answer6x^{2} +5x-4

Step-by-step explanation:

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Please answer this your award will be 20 points for the first answer and brainliest​
Anna [14]

Step-by-step explanation:

pool = 1600 sq.cm

1600 sq.sm = 50cm × 32cm

AB = 50cm

the area of the park of A'B' :

50cm×4=200 sq.cm

5 0
3 years ago
What is the exact value of tan  -13pi/6 and also the explanation
mihalych1998 [28]
tan\left(-\frac{13\pi}{6}\right)=-tan\left(2\frac{1}{6}\pi\right)=-tan\left(2\pi+\frac{1}{6}\piright)=-tan\frac{1}{6}\pi=-\frac{\sqrt3}{3}
7 0
3 years ago
Read 2 more answers
Which expression can be used to find the price of a $400 telescope after a 32% markup? Select all that apply.
elena-s [515]
<h3>There are 2 answers: choice C, choice D</h3>

====================================================

Explanation:

32% = 32/100 = 0.32

32% of 400 = 0.32*400 = 400(0.32), which adds onto the original 400 to get 400+400(0.32). This is why choice D is one of the answers.

We can factor out the GCF 400 to go from 400+400(0.32) to 400(1+0.32) which then simplifies to 400(1.32) or just 400*1.32. This shows choice C is the other answer. Using a calculator,

400+400(0.32) = 400 + 128 = 528

400*1.32 = 528

meaning that 400+400(0.32) = 400*1.32

The other answer choices result in other values, showing that they aren't equivalent to 528.

6 0
3 years ago
Ms. Williams wants to analyze the scores for the first unit test of her NC Math 1 class
marishachu [46]

Answer:

Mean:79

Median:81

Standard deviation:15

Interquartile range:22

6 0
3 years ago
Read 2 more answers
This is a proportion. What is the value of X?
Verizon [17]

Answer:

x = 15 or x = - \frac{2}{5}

Step-by-step explanation:

Cross- multiplying gives

(14x + 6)(17x + 5) = 9x(27x + 11) ( expanding factors )

238x² + 172x + 30 = 243x² + 99x

rearrange into standard form : ax² + bx + c = 0

5x² - 73x - 30 = 0 ← in standard form

consider the factors of the product 5 × - 30 = - 150 which sum to the coefficient of the x-term (- 73 )

the factors are - 75 and + 2

Use these factors to split the middle term

5x² - 75x + 2x - 30 = 0 ( factor by grouping )

5x(x - 15) + 2(x - 15) = 0 ← take out the factor (x - 15)

(x - 15)(5x + 2) = 0

equate each factor to zero and solve for x

x - 15 = 0 ⇒ x = 15

5x + 2 = 0 ⇒ x = - \frac{2}{5}


7 0
3 years ago
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