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stiv31 [10]
2 years ago
13

Find the zeros for 2x^2-24=26. what id the positive value of x?

Mathematics
1 answer:
Oksana_A [137]2 years ago
6 0

Answer:

x=5

Step-by-step explanation:

move the constant to the right

calculate

devide both sides

simplify the equation

seperate the solution

(x=5)

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Please help me with algebra part B and C. attachment below. Will mark as brainslist. 25 points.
miv72 [106K]

Answer:

C. (-7x+60)(x+4)

Step-by-step explanation:

Consider the expression -7x^2+32x+240.

First, note that

a=-7\\ \\b=32\\ \\c=240

Find the discriminant

D=b^2-4ac=32^2-4\cdot (-7)\cdot 240=1,024+6,720=7,744\\ \\\sqrt{D}=\sqrt{7,744}=88

Now,

x_1=\dfrac{-b+\sqrt{D}}{2a}=\dfrac{-32+88}{2\cdot (-7)}=-4\\ \\x_2=\dfrac{-b-\sqrt{D}}{2a}=\dfrac{-32-88}{2\cdot (-7)}=\dfrac{60}{7}

Write the factored form:

-7x^2+32x+240=-7(x-(-4))\left(x-\dfrac{60}{7}\right)=(x+4)(-7x+60)

8 0
3 years ago
The Pep band made $640 during a fund-raiser. The band spent $400 of the money on new uniforms. What percent of the total did the
vfiekz [6]

Answer:62%

Step-by-step explanation: if you divide the amount spent by the amount made you get the percentage

5 0
3 years ago
A TV production warehouse can assemble 120 TV’s in 4 hours. How long does it
nirvana33 [79]

\huge\boxed{2\ \text{minutes}}

First, convert the number of hours to minutes.

4*60=240

Now, divide by the number of TVs assembled in that time.

240\div 120=\boxed{2}

7 0
3 years ago
The hours Veronica spends studying must exceed 10, or she will lose her extra credit. Write an inequality to represent this situ
MAVERICK [17]

Answer:

Each day she must stay at 10 or more.

Step-by-step explanation:

In the drawing, put from Monday to Sunday, choose a value between 10 and 15 for each day and represent it.

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Two people agree to meet for a drink after work but they are impatient and each will only wait 20 minutes for the other person t
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7 0
3 years ago
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