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2 years ago

5

Algebra 1 help please!

1 answer:

krek1111 [17]2 years ago

6 0

2 is false...............
.......

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What is the slope-intercept form equation of the line that passes through (5,7) and (8,22)

JulsSmile [24]

$\bf (\stackrel{x_1}{5}~,~\stackrel{y_1}{7})\qquad(\stackrel{x_2}{8}~,~\stackrel{y_2}{22})\\\\\\ slope = m\implies\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{22-7}{8-5}\implies \cfrac{15}{3}\implies 5\\\\\\ \begin{array}{|c|ll}\cline{1-1}\textit{point-slope form}\\\cline{1-1}\\y-y_1=m(x-x_1)\\\\\cline{1-1}\end{array}\implies y-7=5(x-5)\\\\\\y-7=5x-25\implies y=5x-18$

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3 years ago

Please help me<br> 20 points

vesna_86 [32]

A. (-9,4)
b. (0,0)
c. I'm not sure so sorry

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2 years ago

A large city newspaper periodically reports the mean cost of dinner for two people at restaurants in the city. The newspaper sta

inysia [295]

Answer: C) 133

Step-by-step explanation:

The formula to find the sample size is given by :-

$n=(\dfrac{z^*\cdot\sigma}{E})^2$

, where z* = Critical z-value

$\sigma$ = Population standard deviation for prior study.

E= Margin of error.

As per given , we have

$\sigma=$35$

E= 5

The critical z-value for 90% confidence level is 1.645.

Substitute al;l the value sin the above formula , we get

$n=(\dfrac{1.645\times 35}{5})^2$

$n=(\dfrac{57.575}{5})^2$

$n=(11.515)^2$

$n=132.595225\approx133$

Hence, the minimum sample size needed is 133.

Thus , the correct answer is : C) 133

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3 years ago

If the food is good or if I eat too much, I'll exercise. How do you write this compound statement in symbols.

Naily [24]

Let
Y=the food is yummy
O=overeat
E=exercise
Note:
∪ = or
-> if ... then

(Y∪O)->E

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2 years ago

A truck delivered 80 tons of bricks in 4 hours.The truck delivered an equal amount of bricks each hour.How many tons of Bricks d

strojnjashka [21]

The answer 20, 80÷4 is 20

3 0

3 years ago

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