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Mars2501 [29]
3 years ago
6

(^^tap) SOS having a bit of trouble with this problem​

Mathematics
1 answer:
MrRa [10]3 years ago
5 0

Answer:

x = -5.25 or 21/4

Step-by-step explanation:

When break the bracket out, if there is a minus sign in front of the bracket, when we break it out, the sign inside the bracket would become positive:

67 = 18 - (8x - 7)

67 = 18 - 8x - (-7)

67 = 18 - 8x + 7

67 = 18 + 7 - 8x

67 = 25 - 8x or rewrite for easier look: 25 - 8x = 67

25 - 8x = 67

8x = 25 - 67

8x = -42

Divide both side by 8, we got:

x = -42 / 8

x = -5.25 or 21/4

Hope this helped :3

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Cube A has a volume of 125 cubic inches. The edge lengths of cube B measure 4.8 inches. Which cube is larger and why?
Anestetic [448]

Answer: Cube A is larger. This is because volume is found by multiplying length × width × height. The length, width, and height of a cube are ALWAYS equal. Therefore if cube B has a length of 4.8 inches it also has a height of 4.8 inches and a width of 4.8 inches. To find its volume multiply 4.8×4.8×4.8 this will give you 110.592 cubic inches. This means cube A is larger.


4 0
4 years ago
1. Find the area of the polygon
zhannawk [14.2K]

Answer:

1. A = 40 units²

2. A = 72 units²

3. B) 45

Step-by-step explanation:

1.  This shape comprises 4 congruent triangles with base of 5 units and height of 5 units.

Area of a triangle = 1/2 x base x height

Therefore, area of polygon = 4(1/2 x 5 x 4)

                                             = 40 units²

2.  This shape comprises two pairs of congruent triangles.

Area of a triangle = 1/2 x base x height

Therefore, area of polygon = 2(1/2 x 2 x 6) + 2(1/2 x 10 x 6)

                                             = 72 units²

3.  Count the number of shaded squares:

9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 45 units²

7 0
2 years ago
Use the elimination method to solve the system of equations. Choose the correct ordered pair. 
Aleonysh [2.5K]
4x + 7y = 60
-4x + 7y = -4
------------------add
14y = 56
y = 56/14
y = 4

4x + 7y = 60
4x + 7(4) = 60
4x + 28 = 60
4x = 60 - 28
4x = 32
x = 32/4
x = 8

so ur solution is : (8,4)
6 0
4 years ago
Read 2 more answers
Skye had 12 1/4 meters of ribbon. She used 2/3 of it to wrap a present and 1/2 of the remainder on a craft project. How many met
LenaWriter [7]

Answer:

She has 2 1/24 meters of ribbon

Step-by-step explanation:

Skye has 12 1/4 meters of ribbon, and she uses 2/3 of that.

To know how much she uses we have to multiply the total by the fraction she uses:

12 1/4 * 2/3,

12 1/4 is the same as 49/4, so we can solve by multiplying the nominators and denominators:

49/4 * 2/3 = 49/6;

So she used 49/4 meters of ribbon or 8.167 m.

Now we are going to see how much ribbon is left by subtracting from the total what she used:

12 1/4 - 49/4 = 49/12 meters that she has left.

And out of those she uses 1/2, so we are going to multiply what she has left by 1/2:

49/12 * 1/2 = 49/24 = 2 1/24 = 2.04167 meters that she used of the remaining.

And because she used half she still has the other half of the remaining:

2 1/24 or 2.94167 meters.

8 0
3 years ago
What is 45 meters in 6 seconds?
pogonyaev
7.5 meters per second
7 0
3 years ago
Read 2 more answers
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