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RSB [31]
3 years ago
10

The local zoo contracts with one of the local veterinary clinics for pet checkups and sick visites. the zoo manager thought the

vet made more then 375 visits to the zoo in one year, but the actual number was 412. what was the percent error between the actual number of visits and the number of visits the manager thought the vet made
Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
5 0
10%. 10% of 375 would be 37. Add 375 + 37 & it = to 412. Therefore it's a 10% mistake/error.
skad [1K]3 years ago
3 0
Idk this is hard sorry I couldn't help you but you just helped me


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Answer:

x=0     x = 1/6

Step-by-step explanation:

5x  -30x^2 = 0

Factor out the greatest common factor which is 5x

5x(1 -6x) =0

Use the zero product property

5x =0  and 1-6x =0

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3 years ago
Solve for x.<br><br> 2/3x=10
Ierofanga [76]
2/3x=10
x=10÷2/3
x=10×3/2
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7 0
3 years ago
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Which of the following is an extraneous solution of sqrt 4x + 41 = x+5
stiv31 [10]

Answer:

x=-8

Step-by-step explanation:

\sqrt{4x+41}=x+5

on squaring both sides

4x+41=(x+5)^2\\\\4x+41=x^2+10x+25\\\\x^2+6x-16=0\\\\x^2+8x-2x-16=0\\\\x(x+8)-2(x+8)=0\\\\(x-2)(x+8)=0

either x-2=0  or  x+8=0

either x=2 or x=-8

Putting x=2 in original equation, we get

\sqrt{4\times 2+41}=2+5

7=7 hence, it is not an extraneous solution

Putting x=-8 in original equation

\sqrt{4\times (-8)+41}=-8+5

i.e. 3=-3

Hence, x=-8 is an extraneous solution (since it doesn't satisfy the original equation)

3 0
3 years ago
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What is the sum of 667 and 23?<br> A. 29<br> B. 690<br> C. 644<br> D. 15,341
butalik [34]
If you would like to know what is the sum of 667 and 23, you can calculate this using the following steps:

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667 + 23 = 690

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5 0
3 years ago
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A sales manager collected data on annual sales for new customer accounts and the number of years of experience for a sample of 1
Nadya [2.5K]

Answer:

Kindly check explanation

Step-by-step explanation:

Given :

Years of experience (X) :

1

3

3

5

7

8

10

10

12

12

Annual sales (Y) :

85

97

95

97

105

106

122

120

113

134

The estimated regression equation obtained is :

y = b0 + b1x

b0 = 82.82967

b1 = 3.46061

ŷ = 3.46061X + 82.82967

The change in annual sales for every year of experience is given by the slope value, b1 = 3.46061 = 3.5 (1 decimal place)

The Coefficient of determination R² = 0.8477 = 0.848 ( 3 decimal place).

The Coefficient of determination gives the proportion of explained variance.

About 84.8% percent variation in annual sales can be explained by years of experience of the sales person.

Using the regression equation :

ŷ = 3.46061X + 82.82967

Years of experience, x = 8

ŷ = 3.46061(8) + 82.82967 = 110.514

111 = (to the nearest whole number)

4 0
3 years ago
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