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aleksandr82 [10.1K]
2 years ago
12

Someone please help me with number 16​

Mathematics
1 answer:
ddd [48]2 years ago
8 0

Answer:

Step-by-step explanation:

76

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Amount of Fuel. A car uses 20 gallons of gasoline for a trip of 500 miles. How many gallons would be used on a trip of 400 miles
jasenka [17]

Answer:

16 gallons

Step-by-step explanation:

divide

4 0
3 years ago
a recipe calls for 3 ounces of flour for every 2 ounces of sugar. Find the constant of proportionality.
Ket [755]
3:2 


for every 3 ounces of flour, you need 2 ounces of sugar
7 0
3 years ago
If 0° ≤ θ ≤ 90° and cosθ = 11/15 , what is the value of sin (90° - θ)?
igor_vitrenko [27]
11/15=0.7333
cos^{-1}(0.7333) =42.83342
sin(90-47.166572) = 0.7333

first, find the numeric value for 11/15
second to find theta, simply do the <em>inverse</em> cos (which is cos^-1) of the first answer.
now you know theta, just do the sin of 90 - theta and that's it!

since you know whatr cos(theta) is, you just take the inverse cos of that number to get theta and 'reverse' cos, essentially. you are just solving for theta, by reversing the cos function with cos^-1
please mark as brainliest!
7 0
3 years ago
Read 2 more answers
Use elimination to solve each system if equation 3x+2y=0and x-5y=17
kotykmax [81]

Answer:

y = -3

x=2

Step-by-step explanation:

3x + 2y = 0

x - 5y=17

to use the elimination you have to make one of the numbers same

so

3(x-5y=17)

and you would have to change the sign so that both of the 3x could cancel out.

New system of equation

3x + 2y = 0

-3x+15y=-51

17y=-51

y = -3

so we know the y value so now you could find the x value take one equation

x - 5y=17

x +15=17

x = 2

you could try it with both of the equations

3x + 2y = 0

3x + - 6=0

3x-6=0

3x=6

x=6/3

x=2

6 0
3 years ago
Rachel rode her bike for one-fifth of a mile on Monday and two-fifths of a mile on Tuesday. How many miles did she ride altogeth
disa [49]

Answer:

3/5

Step-by-step explanation:

1/5 + 2/5 = 3/5

4 0
3 years ago
Read 2 more answers
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