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Snezhnost [94]
3 years ago
12

A. B. C. D. help me pls i rely need it

Mathematics
2 answers:
ozzi3 years ago
8 0

Answer:

B

Step-by-step explanation:


KengaRu [80]3 years ago
6 0

Answer:

The answer would be A because if you do guess and check the other answers come out negative. Do you need to show your work?

Step-by-step explanation:


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The train has travelled 45 miles the journey is double this length how long is the journey
Paraphin [41]

Answer:

90

Step-by-step explanation:

Since the journey is DOUBLE 45, all you have to do is multiply 45 times 2

6 0
3 years ago
Solve the system of equations:
iVinArrow [24]

(-1,-2) \:  \:  \:  \:  \: and \:  \:  \:  \:  \: (3,6) \\ Answer: A

Step-by-step explanation:

y = 2x \\ y =  {x}^{2}  - 3 \\  \\ 2x =  {x}^{2}  - 3 \\  {x}^{2}  - 2x - 3 = 0 \\ (x + 1)(x - 3) = 0 \\ x + 1 = 0 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x - 3 = 0 \\ x =  - 1 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x = 3

When x = -1

Substitute x = -1 into y = 2x

y = 2(-1)

y = -2

( -1, -2)

When x = 3

Substitute x = 3 into y = 2x

y = 2(3)

y = 6

( 3, 6)

5 0
3 years ago
Find the value of x<br>the options are:<br>8<br>97<br>107<br>117<br><br>PLEASE HURRYYY<br><br>​
antiseptic1488 [7]

Answer:

107 degrees

Step-by-step explanation:

All polygon degrees add up to 360

we know that this polygon has a angle of 90 and 56

subtract 90 and 56 from 360 to get 214

Then divide by 2 because there are 2 x angles

to get 107 degrees

3 0
3 years ago
If Ms. Canton was driving for two hours and she traveled a total distance of 120 miles. How fast was she driving? Explain how di
Vitek1552 [10]

Answer:

Step-by-step explanation:Total hours:2 hours

Total distance:120 miles

speed: 120miles/2hours equal to 60miles/hour

3 0
3 years ago
Read 2 more answers
The data shown has a least-squares regression line of y=3.2x−6.4.
Damm [24]

Answer:

1) B. on, 2) D. 19.2, 3) C. 0

Step-by-step explanation:

1) The value of y according to the regression line is:

y = 3.2\cdot (8) - 6.4

y = 19.2

Hence, the point (8,19.2) is <em>on </em>the least-squares regression line.

2) The value of y according to the regression line is 19.2.

3) The residual is the difference between the value from the regression line and the real value. In this case, the residual value is 0.

5 0
3 years ago
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