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mr_godi [17]
3 years ago
8

Simplify: -8x +7-5-5x + 5x A - 8x + 2 B -18x+12 -x-5 D -X+12

Mathematics
1 answer:
adell [148]3 years ago
4 0

Answer:

A) -8x+2

Step-by-step explanation:

-8x + 7 - 5 - 5x + 5x

-8x -5x + 5x + 7 - 5

- 8x+2

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The triangle below is isosceles. If ∠C≅∠B, then what is BC, in units?
ladessa [460]

Answer:

Step-by-step explanation:

If angles C and B have equal degrees then the side AC is also equal to  side AB in length and you can make their equations equal as well and solve for X.

2x+16=7x+6

get X's all on same side and the constants all on the other side,  

-2x +2x+16=7x+6+-2x

The X's on the left cancel out.

16=5x+6

-6+16=5x+6+-6

add -6 to each side.  On the right the 6 is now cancelled out.

10=5X

divide each side by 5 to cancel out the 5

10/5= 5X/5

2=X .  ANSWER

5 0
3 years ago
If vertices of a triangle are A (5, 0), B (x, y) and C (25, 0), what is the area of the triangle?(1) |x| = y = 10(2) x = |y| = 1
Elanso [62]

Answer:

10|y|

Step-by-step explanation:

We have been given that the vertices of a triangle are A (5, 0), B (x, y) and C (25, 0). We are asked to find the area of the given triangle.

We will use area formula for triangle with vertices A, B and C as given below:

|\frac{A_x(B_y-C_y)+B_x(C_y-A_y)+C_x(A_y-B_y)}{2}|

Upon substituting the given coordinates of points A, B and C in above formula, we will get:

|\frac{5(y-0)+x(0-0)+25(0-y)}{2}|

|\frac{5(y)+x(0)+25(-y)}{2}|

|\frac{5y+0-25y}{2}|

|\frac{-20y}{2}|

|-10y|

10|y|

Therefore, the area of the given triangle would be 10|y|.

4 0
3 years ago
During a sale, every item in a store is 80% of its regular price. If the regular price of a T-shirt is $10, what is its sale pri
kipiarov [429]

Answer:

Step-by-step explanation:

If the regular price of a T-shirt is 10 USD and the store sells off its wares at 80% of its regular price, then the price at which the store would still the aforementioned T-shirt would be 80% of its 10 USD price.

80% of $10 =

0.8 * 10 = $8

This means that the price at which the T-shirt will go for, due to the ongoing sales will be $8.

Also, being asked to find the 10% and 20% of $10 is just as simple

10% of $10 =

0.1 * 10 = $1

20% of $10 =

0.2 * 10 = $2

Therefore, the 10% and 20% of $10 is $1 and $2 respectively.

3 0
3 years ago
Carol Ann buys a TV at 70% off the original price. If she pays $120, what was the original price of the TV?
Keith_Richards [23]
If the TV is 70% off, then that means she paid 30% of the original cost.  If 30% of the original cost  is $120, then...

30% * x = 120
.30x = 120
x = 120/.30
x = 400

The original cost was $400
5 0
4 years ago
Read 2 more answers
Pleaseeeeeeee help me out
Elza [17]

Answer: b: s=n x 23

Step-by-step explanation:

When looking at the coordinates on the graph, each point increases by 23. 23 is multiplied by the number day it is (n)

8 0
3 years ago
Read 2 more answers
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