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vampirchik [111]
3 years ago
8

Solve the following equation for x. x2 + 8x + 7 = 0

Mathematics
1 answer:
igomit [66]3 years ago
7 0

Step-by-step explanation:

x² + 8x + 7 = 0

(x + 7) (x + 1) = 0

x = -7 or -1

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(02.02)A train can travel 744 miles in 3 hours. What is the unit rate that this train is traveling per hour? _____ miles per hou
Fynjy0 [20]

If the train travels 744 miles in 3 hours then to determine the unit rate the train is traveling per hour you have to divide the miles by the hours, in this case (744 miles)/(3 hours). The final result concludes as 248 miles per hour.

7 0
3 years ago
Triangle QRS has the angle measures shown.
galina1969 [7]

Answer:

108 degrees

Step-by-step explanation:

Given the following angle measures in triangle QRS

m<Q = 1x

m<R = 3x

m<S = 6x

Note that the largest angle is the obtuse angle since they are always greater than 90 and less than 180 degrees

The sum of angle in a triangle is 180 degrees

m<Q + m<R + m<S = 180

1x + 3x + 6x = 180

10x = 180

x = 180/10

x = 18

The obtuse angle is 6x

Measure of the obtuse angle = 6x

Measure of the obtuse angle = 6(18)

Measure of the obtuse angle = 108 degrees

Hence the measure of the obtuse angle is 108 degrees

7 0
3 years ago
Are these correct???
Nutka1998 [239]

Answer:

They are all correct.

Step-by-step explanation:

1.

1/2(b)(h)

1/2(4)(6)

1/2(24)

12

2. l x w

7 x 5

35

3. (b)(h)

(8)(4)

32

8 0
3 years ago
The line graphed by the equation, y=5/6x +1/2, has a slope of 1/2 and a y-intercept of 5/6 true or false?
vazorg [7]
False. It has a slope of 5/6 and y intercept of 1/2.
8 0
3 years ago
(20×2)20+2)20×2)+20(+41+2=​
andrew-mc [135]

Answer:

123

Step-by-step explanation:

BODMAS

1.multiply 20 by 2

2.20 ×2

3. 40+22+40+20+43=123

3 0
3 years ago
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