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stealth61 [152]
4 years ago
9

Evaluate 13-0.75w+8x13−0.75w+8x13, minus, 0, point, 75, w, plus, 8, x when w=12w=12w, equals, 12 and x=\dfrac12x= 2 1 ​ x, equal

s, start fraction, 1, divided by, 2, end fraction.
Mathematics
2 answers:
Sergeeva-Olga [200]4 years ago
5 0
For this case we have the following expression:
 13-0.75w + 8x
 We must evaluate for the following values:
 w = 12
 x = 1/2
 Substituting the values we have:
 13- 0.75 * (12) + 8 * (1/2) = 8
 Answer:
 
The result after evaluating the expression is:
 
8
castortr0y [4]4 years ago
5 0

Answer:

the answer will be 8

Step-by-step explanation:

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A bicycle has a listed price of $516.95 before tax. If the sales tax rate is 7.25%, find the total cost of the bicycle with sale
Darya [45]

Answer:$554.43

Step-by-step explanation:

516.95 * 7.25%=37.48

516.95 + 37.48 = 554.43

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3 years ago
What is the unit rate of $8.75 for 2.5 gallons?
quester [9]

Answer:

21.875

<h3>-------------------------------------------------------------------------------------------------</h3>

<em>$8.75/2.5</em>

$8.75× 2.5= 21.875

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3 years ago
A circle is centered at the point (-7, -1) and passes through the point (8, 7).
Lisa [10]

Answer:

Part 1) The radius of the circle is 17 units

Part 2) The point (-15,14) and (-15,-16) lies on this circle

Step-by-step explanation:

step 1

Find the radius of the circle

we know that

The distance from a circle's center to any point on the circle is called the radius of the circle

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

Find the distance (radius) between the points (-7,-1) and (8,7)

substitute in the formula

r=\sqrt{(7+1)^{2}+(8+7)^{2}}

r=\sqrt{(8)^{2}+(15)^{2}}

r=\sqrt{(289}\ units

r=17\ units

step 2

Find the equation of the circle in center radius form

(x-h)^2+(y-k)^2=r^2

where

(h,k) is the center of the circle

r is the radius of the circle

we have

(h,k)=(-7,-1)\\r=17\ units

substitute

(x+7)^2+(y+1)^2=17^2

(x+7)^2+(y+1)^2=289

Remember that

If the point (-15,y) lie on the circle, then the ordered pair must satisfy the equation of the circle

substitute the value of x=-15 in the equation

(-15+7)^2+(y+1)^2=289

solve for y

(-8)^2+(y+1)^2=289

64+(y+1)^2=289

(y+1)^2=225

take square root both sides

y+1=(+/-)15\\y=-1(+/-)15

y=-1+15=14\\y=-1-15=-16

therefore

The point (-15,14) and (-15,-16) lies on this circle

see the attached figure to better understand the problem

8 0
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liraira [26]

Answer:

0.0625

Step-by-step explanation:

You can convert this into a fraction by entering this into a calc

3 0
3 years ago
An even number, n, times the next consecutive number, n + 2, is equal to 168. Find the original number.
ira [324]

Answer:12*14

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6 0
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