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nevsk [136]
4 years ago
6

Evaluate (13+2) Divided by(9-4)

Mathematics
2 answers:
DIA [1.3K]4 years ago
7 0
13+2=15
Then
9-4=5
Then divide it your answer is 3
Because 15 divide by 5 is 3
skelet666 [1.2K]4 years ago
6 0

Answer:

=3

Step-by-step explanation:

following the order of operations, whatever is in the parentheses gets done first. so you would add 13 + 2 and get 15. then you would subtract 9-4 and get 5. then you would divide the numbers that you got and get 3.

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k = -10

Step-by-step explanation:

5 0
3 years ago
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For a house call, a veterinarian charges $70, plus $40 an hour.
arlik [135]
Y=40x+70
40 being the slope and 70 being the y intercept.
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8 0
3 years ago
Solve equation (n-1)(n+6)(n+5)=0
Vika [28.1K]
Answer:
1, -6 and -5 

Explanation:
To solve the equation means to get the values of n which satisfy the given equation.
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(n-1) (n+6) (n+5) = 0
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5 0
3 years ago
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(1 point) Carbon dating is often used to determine the age of a fossil. For example, a humanoid skull was found in a cave in Sou
Aleksandr [31]

Answer:

The estimated age of the skull is 39118 years.

Step-by-step explanation:

The amount of the substance after t years is given by:

A(t) = A(0)(1-r)^t

In which A(0) is the initial amount, and r is the decay rate.

The half-life of carbon-14 is about 5600 years.

This means that A(5600) = 0.5A(0). We use this to find r, or 1 - r, to replace in the equation. So

A(t) = A(0)(1-r)^t

0.5A(0) = A(0)(1-r)^{5600}

(1-r)^{5600} = 0.5

\sqrt[5600]{(1-r)^{5600}} = \sqrt[5600]{0.5}

1 - r = (0.5)^{\frac{1}{5600}}

1 - r = 0.9999

So

A(t) = A(0)(0.9999)^t

Only 2% of the original amount of carbon-14 remains in the burnt wood of the campfire.

This is t for which A(t) = 0.02A(0). So

A(t) = A(0)(0.9999)^t

0.02A(0) = A(0)(0.9999)^t

(0.9999)^t = 0.02

\log{(0.9999)^t} = \log{0.02}

t\log{0.9999} = \log{0.02}

t = \frac{\log{0.02}}{\log{0.9999}}

t = 39118

The estimated age of the skull is 39118 years.

6 0
3 years ago
Find the area of the shape shown below. 7 3 and 3
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Answer:

the answer is gonna be 63

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