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lutik1710 [3]
2 years ago
5

Hank's speedometer reads 60 miles per hour, but during a road test he finds that he was actually driving 50 miles per hour. What

is the percent error in Hank's speedometer?
Mathematics
2 answers:
zhenek [66]2 years ago
4 0
The percent error in the speeds are 7.1428. Hope this helps!
pochemuha2 years ago
4 0

Answer:  The speedometer read Hank's miles per hour as 20% more than the miles per hour that he actually drove.

Explanation: 20% of 50 which is the miles per hour he actually drove is 10 and 50 + 10 = 60 which is the incorrect miles per hour his speedometer read.

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What are all of the real roots of the following polynomial? f(x) x^4-24x^2-25
Greeley [361]

<u>Answer:</u>

x = ±5

<u>Step-by-step explanation:</u>

We are given the following polynomial function and we are to find all of its real roots:

x^4-24x^2-25

Let y=x^2 so we can now write it as:

y^2-24y-25

Factorizing it to get:

(y^2+y)+(-25y-25)

y\left(y+1\right)-25\left(y+1\right)

\left ( y + 1 \right ) \left ( y - 2 5 \right)

Substitute back y=x^2 to get:

\left ( x^2 + 1 \right ) \left ( x^2 - 25 \right )

\left ( x^2 + 1 \right ) \left ( x + 5 \right ) \left ( x - 5 \right )

The quadratic factor has only complex roots. Therefore, the real roots are x = ±5.

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3 years ago
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kipiarov [429]
The slope of this line is -1 you find this by using the slip formula of y-y over x-x find two points on the line so I used points (-2,2) and (-1,1) plug them into the formula to get the slope of -1 hope this helps:)
6 0
3 years ago
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Jayla and Hailey were paying a dinner check, but they were not sure how much they should tip for their bill of $25.50. If a 12%
DochEvi [55]

Answer:

tip total $4

tip per person $2

total (bill plus tip) $29.

total each person $15

Step-by-step explanation:

3 0
2 years ago
What is the smallest positive integer n &gt; 1 for which fewer than 1% of the positive integers less than n are factors n?
disa [49]

its 34 boy im telling you


5 0
3 years ago
Pls answer the questions (all)
bearhunter [10]

Answer:

1;no

2; i don^t know

3;c

4;12

5:20

Step-by-step explanation:

reasons

1:sum of all side of triangle is 180 degree(here is 220)

3: try in copy and u will able to solve

4:first of all make 9 cm as shown in figure and draw 15 . finally measure the remaining side.

5: 3y+5y+y=180

    9y=180

      hence,y=20

4 0
3 years ago
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