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Grace [21]
2 years ago
5

ITS DUEEEEEEEE SOON HELLLLLLLLPPPPPPPPPPP MEEEE

Mathematics
1 answer:
Anna [14]2 years ago
7 0

Answer:

It's -2, not -12 and the other is -21

Step-by-step explanation:

7*-3=-21

21/-12=-2

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Write in detail how you have used math in the real-world to solve a problem.
neonofarm [45]

Answer:

I went shopping once for ingredients of a cake, but i didn't know what my finale price would be. So i estimated what the total cost could be, then i took all the prices and added them up then divided the price by how many ingredients i got to find the average and it was pretty close to my estimate. So math can help when you go shopping. (Sorry if how i find my prices is weird, i kinda just stand in one spot for at least 5 - 8 mins trying to find my price)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which equation is an identity?​
kirza4 [7]

Answer:

Option (3).

Step-by-step explanation:

Option (1).

3(x - 1) = x + 2(x + 1) + 1

3x - 3 = x + 2x + 2 + 1

3x - 3 = 3x + 3 [Not True]

Therefore, this equation is not an identity.

Option (2).

x - 4(x + 1) = -3(x + 1) + 1

x - 4x - 4 = -3x - 3 + 1

-3x - 4 = -3x - 2 [Not true]

Therefore, this equation is not an identity.

Option (3).

2x + 3 = \frac{1}{2}(4x + 2) + 2

2x + 3 = 2x + 1 + 2

2x + 3 = 2x + 3 [True]

Therefore, this equation is an identity.

Option (4).

\frac{1}{2}(6x-3)=3(x+1)-x-2

3x - 1.5 = 3x + 3 - x - 2

3x - 1.5 = 2x + 1 [Not true]

Therefore, this equation is not an identity.

6 0
3 years ago
Read 2 more answers
Describe its graph. <br><br> 4 – 5x &gt; 19
ira [324]

Answer:

X is greater than 4.6

Step-by-step explanation:

7 0
3 years ago
A van travels at a constant speed of x km/hr over a distance of 45km/hr. If the van increases its speed by 4km/h, it will be abl
harkovskaia [24]
Speed = Distance/Time. Let speed be V, distance D and time T

a)Given: D₁ =45km, V₁=x km/h 
V₁=D₁/T
V₁=45/T OR T= 45/V₁

b) Given : D₂ =48 km and V₂ = V₁ + 4 km/h
V₂ = 48/T, but V₂ = V₁+4, then:

V₁+4 = 48/T OR  T=48/(V₁+4). Since Time is same, then we can write:
45/V₁ =48/(V₁+4), solve for V₁:
45V₁ + 180 = 48V₁

3V₁ =180 and V₁ = x = 60 km/h
8 0
2 years ago
Find the indicated term of the given arithmetic sequence. a1 = 115, d = 8, n = 14
olya-2409 [2.1K]
I took the same test and I put the answer D. 1487 and I got it wrong. The correct answer was 
A.3
3 0
2 years ago
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