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klemol [59]
3 years ago
11

45% of 80 show your work

Mathematics
2 answers:
nadya68 [22]3 years ago
8 0
0.45 times 80 = 36

40% has to become a decimal first = 0.45 then times it by 8 = 36

Answer is <em>36</em>


Elan Coil [88]3 years ago
4 0
.45 times 80

8 times 4 =32
8 times 0.5 =4

Just add these together to get 36.
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One inch corresponds to 8 feet on an architects blueprint. Find the actual length of a wall represented by 4 1/2 inches on the b
agasfer [191]

Answer:

36 feet

Explanation:

8 feet : 1 inch = 36 feet : 4.5 inches

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3 years ago
What’s the equation for (8,2)(0,0)
Kay [80]

Answer: y=4x

Step-by-step explanation:

We will make use of the slope intercept form to solve this question:

First of all, we have to calculate the slope from the 2 points (8,2) and (0,0).

We know that the formula for the slope is: m = (y2 - y1) / (x2 - x1)

From the question, y2 = 0, y1 =2, x1 =8 and x2 = 0.

Therefore, slope (m) = (0 - 2)/(0 - 8)

This gives us m = 2/8 and simplified further to 1/4.

The slope intercept form of the equation is y = mx + c where "m" is the slope.

Therefore substituting the value of 1/4 for "m" in the equation, we get;

y = (x/4) + c

Now to get the value of "c",let's substitute the value of x and y from the first intercept of (8,2).

We get; 2 = (8/4) + c

; 2 = 2 + c

Subtract 2 from both sides to get c = 0.

Also, when we use the value of x and y from the second intercept (0,0), we get the same value of c=0

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3 years ago
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gayaneshka [121]
7. 18.3 divided by 4 is 4.575. 4.575 is closest to 4.5 which would be our answer

8. 14.6 divided by 3 is 4.86. If we round it, then it would be 5 which would be the answer

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2 years ago
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3 years ago
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The midpoint of ab is M (-6,1 ). if the coordinates of A are (-7,-3 ),what are the coordinates of B
Scrat [10]

Answer:

B(-5,5).

Step-by-step explanation:

It is given that midpoint of AB is M (-6,1).  

Coordinates of A are (-7,-3 ).

We need to find the coordinates of point B.

Let coordinates of point B are (a,b).

Midpoint=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)

Midpoint of AB is

Midpoint=\left(\dfrac{-7+a}{2},\dfrac{-3+b}{2}\right)

(-6,1)=\left(\dfrac{-7+a}{2},\dfrac{-3+b}{2}\right)

On comparing both sides, we get

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b=5

Therefore, the coordinates of B are (-5,5).

6 0
3 years ago
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