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kirill [66]
3 years ago
8

Evaluate expression 1/2a-5b when a= -12 and b= -3

Mathematics
1 answer:
arsen [322]3 years ago
5 0

Answer: 9

Step-by-step explanation:

1/2 * -12= -6

5*-3= -15

-15- (-6)=  -9

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Raul is selling coupon books. He started with 50 coupon books and has already won a prize for selling at least 10 coupon books.
Svetach [21]

Answer:

Option 3.

Step-by-step explanation:

The given function is

f(x)=20x

where, x is number of coupon books.

We have to find the practical domain for the given function.

Domain : The set of input values is called domain.

It is given that Raul is selling coupon books. He started with 50 coupon books and has already won a prize for selling at least 10 coupon books.

The number of coupon books can not be a decimal or fraction value. It means the values of x are integers.

The value x is all integers from 10 to 50.

Hence, the correct option is 3.

3 0
3 years ago
Zachary travels on a journey of 50 miles. He spends half
ExtremeBDS [4]

Answer: 8 hours.

Step-by-step explanation:

We have the relation:

Time  = distance/velocity

Distance = 50 miles

Velocity in horse = 9mph

Velocity walking = 3 1/2 mph = 3.5 mph

Then, if T is the total time, X is the distance that he travels in horse and Y is the distance that he travels by foot, we have:

X + Y = 50 miles:

T/2 = X/9mph

T/2 = Y/3.5mph

Then we have:

X/9mph = Y/3.5mph

X = Y*(9/3.5)

And by the first relation:

X = 50 mi - Y

then we have:

50mi - Y = Y*(9/3.5)

50mi = Y + Y*(9/3.5) = Y*(1 + 9/3.5) = Y*3.57

Y = 50mi/3.57 = 14mi

Then we have:

T/2 = 14mi/3.5mph

T = 2*(14/3.5) hours = 8 hours

7 0
3 years ago
If a || b and m1 = 65°, what is m2? <br>m2 = ______​
Ann [662]

Answer:

M2=65

Step-by-step explanation:

These two are congruent

congruent means- they are the same

so M1 is congruent to M2 and M3.....

5 0
3 years ago
I like rice with tortillas and beans mmmmmm
igomit [66]
Mmm me too, and a big glass of coca cola Yummy! :)
4 0
3 years ago
Read 2 more answers
Solve for x in the triangle. Round your answer to the nearest tenth.
kramer

Answer:

<h2>x = 10.3</h2>

Step-by-step explanation:

Use sine.

sine=\dfrac{opposite}{hypotenuse}

We have:

opposite=x\\hypotenuse=16

\sin40^o\approx0.6428        <em>look at the table in the picture</em>

Substitute:

\dfrac{x}{16}=0.6428         <em>multiply both sides by 16</em>

x=10.2848\to x\approx10.3

5 0
3 years ago
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