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notsponge [240]
3 years ago
12

Twelve times the sum of three and a number is equal to five times the sum of eight more then twice the number

Mathematics
1 answer:
Andreas93 [3]3 years ago
4 0
The equation is 12(3+x)=5(2x+8)
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{18 • [(25 + 15) ÷ 4] + 25} • 12 + 16 • 3
Leviafan [203]
2,508 says my calulator
3 0
3 years ago
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Solve for x. plz help
LiRa [457]
x^2-2x+10=0\\\\ (x^2-2x+1)-1+10=0\\\\(x-1)^2+9=0\\\\ (x-1)^2=-9

Answer D
7 0
3 years ago
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A function hall charges $250 fee to rent the hall plus $15 per guest.vwrite an equation for this function
m_a_m_a [10]

Answer:

y=15x+250 (x is the number of guests)

Step-by-step explanation:

the 15 is the slope, so that is the number that has to be multiplied by. The 250 is an additional fee that doesn't change, so it's just added on.

7 0
3 years ago
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What does the ordered pair (6, 204) represent in this situation?
maxonik [38]

An ordered pair is a composition of the x coordinate (abscissa) and the y coordinate (ordinate), having two values written in a fixed order within parentheses. It helps to locate a point on the Cartesian plane for better visual comprehension. The numeric values in an ordered pair can be integers or fractions.

8 0
3 years ago
A teacher claims that the proportion of students expected to pass an exam is greater than 80%. To test this claim, the teacher a
erica [24]

Answer:

z=-1.591

Step-by-step explanation:

Null Hypotheses,

H_0 : p=0.8\\H_a: p>0.80

So we use z-test for one population proportion (right-tailed test)

According to this informaton, we defined that

\alpha=0.05

z_c=1.64 (critical value)

So our Rejection region is R={z:z>1.64}

z=\frac{\bar{p}-p_0}{\sqrt{p_0(1-p_0)/n}} = \frac{0.755-0.8}{\sqrt{0.8(1-0.8)/200}}=-1.591

Not rejection.

6 0
3 years ago
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