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dem82 [27]
3 years ago
14

The temperature on a summer afternoon is 76°F. Define a variable and write an expression to find the temperature after it change

s. Then evaluate your expression for a decrease of 8 degrees Fahrenheit.
A. 8 – c; 8 – (–76) = 68; 68°F

B. 76 – c; 76 – (–8) = 84; 84°F

C. 76 + c; 76 + (–8) = 68; 68°F
Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0
Letting "c" be the value of the temperature change, looking at the choices, the nearest answer would be C. " 76 + c; 76 + (–8) = 68; 68°F ".

76 is the base or current temperature, then c would be the change in temperature experience. Since a decrease of 8 degrees is to be experienced, it is denoted by the negative symbol on 8. 
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3(12+b)=3x12+3xb
Vikentia [17]
This is the distributive property. You take what is outside of the parenthesis and DISTRIBUTE it inside the parenthesis.
4 0
3 years ago
A mouse climbs up a well of 86 meters. It advances 14 meters during the night, but during the day it retreats 2. The mouse will
Deffense [45]

Step-by-step explanation:

we assume day and night are equally long.

and the mouse will start at night of day 1.

then, on day 2, it will first retreat 2 meters (during daylight) and then advance 14 meters (at night).

so, on every full day, the mouse will effectively advance 12 meters (-2 + 14 = 12).

with a starting value of 14 (the first night).

so, we are getting an arithmetic sequence

an = an-1 + c

c = 12 in our case.

a1 = 14

a2 = a1 + 12 = 14+12 = 26

a3 = a2 + 12 = a1 + 12 + 12 = 14 + 2×12 = 38

an = a1 + (n-1)×12 = 14 + 12(n-1)

at what n will it reach 86 ?

86 = 14 + 12(n-1) = 14 + 12n - 12 = 2 + 12n

84 = 12n

n = 7

so, on the 7th day the mouse will reach the surface (if we truly count the first starting night day 1 - this is up to your teacher, but I would).

7 0
2 years ago
Multiply q by r, subtract p from the result, then triple what you have
Annette [7]
3((q*r)-p)

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6 0
3 years ago
The top of a square box has an area of 121 cm2. What is the length of one side of the box? A) 9.0 cm B) 11.0 cm C) 15.125 cm D)
tekilochka [14]
B. 11.0 cm, since the area of a square is x^2. 11.0 x 11.0 is 121. So that means one of the sides is 11.0
5 0
3 years ago
Read 2 more answers
Question 1 i need help on
ladessa [460]

The actual distance between Bixby and Coyle is 105 miles which can be represented by 7 cm.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

An independent variable is a variable that does not depends on other variable while a dependent variable is a variable that depends on other variable.

60 miles = 4 cm

Hence:

7 cm = 7 cm * (60 miles)/(4 cm)  = 105 miles

The actual distance between Bixby and Coyle is 105 miles which can be represented by 7 cm.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

6 0
1 year ago
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