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nirvana33 [79]
3 years ago
12

Solve the quadratic equation: x^2+ 2x + 7 = 21

Mathematics
1 answer:
Crank3 years ago
3 0

Answer:

x1 = -4.872983346

x2 = 2.872983346

Step-by-step explanation:

<u>Given:</u>

x^2+2x+7=21

<u>Subtract 21 on both sides to get the right side equal to 0:</u>

x^2+2x-14=0

<u>Use the quadratic formula:</u>

x1 = -4.872983346

x2 = 2.872983346

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The point A(-3, -2) is translated using T: (x,y) → (x + 5, y - 3). What is the distance from A to A'?
Degger [83]

Answer:

d=5.39 units

Step-by-step explanation:

Given A (-3, -2)  

T= (x+5, y-3)

T= (-3+5, -2-3)

T=(2,-5)

Applying the translation on;

A( -3,-2)

A' (-3+2, -2+ -5)

A'= (-1, -7)

Distance

d= \sqrt { X2-X1)^2 + (Y2-Y1)^2

A = (-3,-2)     and  A'(-1, -7)

d=√ (-1--3)² + (-7--2)²

d=√ (2)²+(-5)²

d=√4+25

d=√29

d=5.39 units

4 0
3 years ago
Please help!! Thanks
Anna35 [415]
The answer is 85.

Substitute 3 for x and 4 for y in the expression.

After simplifying using order of operations, you will get 85:)
4 0
3 years ago
IM BORED!!!!! what is 5400 divided by 37000​
goblinko [34]

Answer:

0.15

Step-by-step explanation:

5400 ÷ 37000

Cancel out extra zeros

54 ÷ 370 =

Divide and get:

0.15

Hope your boredom is cured :)

6 0
3 years ago
Read 2 more answers
Please explain so I know how to do it
Roman55 [17]
The square root of 2 is irrational. Because 2 is not a perfect square therefore the square root of 2 must be irrational. 1.4 is its approximate to the tenths place. I hope this was helpful
6 0
3 years ago
Jackson's robot moved 5 meters in 2 seconds How far did he move in 30 sec? (please explain and use fractions)
tatyana61 [14]

75 meters

Step-by-step explanation:

5 x 30/2

= 5 x 15

= 75 meters

8 0
3 years ago
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