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artcher [175]
3 years ago
11

1.) p^2+14p-38=0 what the vertex?

Mathematics
1 answer:
Lelu [443]3 years ago
3 0

Answer:

vertex = (- 7, - 87)

Step-by-step explanation:

given a parabola in standard form : ax² + bx + c : a ≠ 0

Then the x- coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

p² + 14p - 38 is in standard form

with a = 1, b = 14, c = - 38, hence

x_{vertex } = - \frac{14}{2} = -7

substitute x = - 7 into the equation for corresponding value of y

y = (- 7)² + 14(- 7) - 38 = 49 - 98 - 38 - - 87

vertex = (- 7, - 87)


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snow_tiger [21]
Assuming that they each work 24hrs a day 7 days a week (I haven't got anything else to go on...sorry) to find the total for Joshua you must first multiply 13x24 = 312, for the toys sold per day, and then 312x7 = 2184, for the number of days per week. so j = 2184
then for Sarah's total we must first multiply 16x24 = 384 for the toys sold per day and then 384x7 = 2688 for the toys sold per week. and 2688+20 = 2708 for the extra 20 she sold. so s = 2708

REMEMBER, THIS IS ASSUMING THEY WORK 24/7 MEANING THEY WORK 168 HOURS PER WEEK. 

IF YOU NEED A DIFFERENT ANSWER LET ME KNOW AND I'LL TRY TO FIX IT. IF YOU LET ME KNOW THE HOURS THEY WORKED I CAN DO TAT FOR YOU AS WELL.
8 0
4 years ago
Naneth deposited php1. 200in a savings account that pays 4%interest in 1 year. How much interest will her money earn in a year?
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Given

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Interest rate R=4\%

Time period T=1\ yr

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\therefore \text{Interest}=\dfrac{P\times R\times T}{100}\\\\\Rightarrow \text{Interest}=\dfrac{200\times 4\times 1}{100}\\\\\Rightarrow 8

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3 0
3 years ago
Rectangle jklm was plotted in the coordinate plane inside JK had a slope of 3/5. What must be the slope of side MJ.
SVETLANKA909090 [29]

Answer: number 2 is the correct answer

Step-by-step explanation:

6 0
3 years ago
Grade 4 Mathematics- Checkpoint #3
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Answer:

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Step-by-step explanation:

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3 years ago
What is the answer?<br>4+7+10+...+151=?​
Mrac [35]

Answer:

151-4=147÷3=49+1=50

151+4=155÷2=77.5×50=3875

3875 is the answer

Step-by-step explanation:

numbers=(last number-first number)÷proximate+1

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3 0
4 years ago
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