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jenyasd209 [6]
2 years ago
8

1. In each of the following expressions, c represents the original cost of an item.

Mathematics
1 answer:
allsm [11]2 years ago
6 0
I think it’s C I’m not sure I seen a question like this before
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What is the slope of the line passing through the points (1,57) and (2,27)?
alex41 [277]

Answer:

m = -30

m = slope

Step-by-step explanation:

(1,57) and (2,27)

(x1,y1) and (x2,y2)

y2 - y1.       27 - 57

----------  =.  ----------  =.  -30/1 = -30

x2-x1.           2 - 1

5 0
3 years ago
Read 2 more answers
Solve and explain how you got the answer :
sweet [91]
15 people
You need to save $30 and each person after 10 saves you $2 so 30/2=15
6 0
3 years ago
Is 1.2 less than or higher than 1.5
Olenka [21]

1.2 is less than 1.5

If you cancel out 1 from both numbers you're left with .2 and .5

Multiply both by 10 and get 2 and 5.

Obviously 2 is less than 5.

4 0
3 years ago
Perform the operation.<br> (-x^2 – 1) – (-2x^2 – 4)
ivolga24 [154]

Answer:

Okay!

Step-by-step explanation:

I have simplified the operation, and I got x^2 + 3.

If you wanted me to evaluate, the answer is still  x^2 + 3.

If you wanted me to subtract then the answer is again,  x^2 + 3.

Basically the answer is  x^2 + 3.

Have a good day!

6 0
2 years ago
Identify the lateral area and surface area of a regular square pyramid with base edge length 5 in. and slant height 9 in.
Galina-37 [17]
Note that a squared pyramid has a square base & 4 equal triangles.
To find the lateral the lateral area you calculate the area of the 4 equal triangles  and to find the surface area (total Area) you add the area of the base:

Area of each triangle = side (5) x slant (9) and you divide by 2

==>Aera of 1 triangle = (9x5)/2 = 45/2 & for the 4 triangles

Lateral area = (45/2) x 4 = 90 in²

Now the base area (square) = 5 x 5= 25 in²

so the surface area = 90+25 = 115 in² (answer a)
7 0
2 years ago
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