Answer:
x² + 4x - 21
Step-by-step explanation:
Given the solutions of x = 3 and x = -7, moving the constant to the other side and setting both equations equal to '0':
x - 3 = 0 and x + 7 = 0
So, the two binomials that make up the quadratic are:
(x - 3)(x + 7)
Use FOIL: x² + 7x - 3x - 21
Combine like terms: x² + 4x - 21
Answer:
-1
Step-by-step explanation:
A = (0,0)
B = (1,-1)
Slope = (-1-0)/(1-0) = -1/1 = -1
When he did distributive property, he forgot to carry out the negative
Suppose to be:
-40 - 6m - 1 = 7m - 2
Answer:
2.25 miles.
Step-by-step explanation:
Given,
In map, the scale is, 1 inch = 3 miles,
That is, the number of miles in 1 inch = 3,
The number of miles in 0.75 inch = 0.75 × number of miles in 1 inch,
= 0.75 × 3
= 2.25
Thus, 0.75 inch = 2.25 miles.
According to the question,
Distance from home to school in scale = 0.75 inch
Hence, the actual distance from home to school is 2.25 miles.
Answer:
Rs. 1,049
Step-by-step explanation:
Charge for 175 of telephone calls
= Rs. 300
Additional charge per call = Rs.
3.50
how much will be charge for 389 telephones calls?
389 telephones calls - 175 telephones calls = 214 telephones calls
Charge for 389 telephones calls = charge of 175 telephone call + (charge of 389 telephones calls - 175 telephones calls)
= Rs. 300 + charge of 214 telephones calls
= Rs. 300 + 214(Rs. 3.50)
= Rs 300 + Rs. 749
= Rs. 1,049