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Artemon [7]
3 years ago
6

Solve the equation

Mathematics
2 answers:
inysia [295]3 years ago
8 0

Answer:

x ≈ 1.32, x ≈ - 5.32

Step-by-step explanation:

Given

x² + 4x - 7 = 0 ( add 7 to both sides )

x² + 4x = 7

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(2)x + 4 = 7 + 4

(x + 2)² = 11 ( take the square root of both sides )

x + 2 = ± \sqrt11} ( subtract 2 from both sides )

x = - 2 ± \sqrt{11}

Thus

x = - 2 - \sqrt{11} ≈ - 5.32 ( to 2 dec. places )

x = - 2 + \sqrt{11} ≈ 1.32 ( to 2 dec. places )

Rashid [163]3 years ago
8 0

Step-by-step explanation:

bla bla bla hahhahahhahahah just for fun

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6x7-8/4 using the order of operations will reward 10 pts best answer will be marked brainliest.
Phantasy [73]

Answer:

40

Step-by-step explanation:

6x7-8/4 =42 - 2 = 40

8 0
3 years ago
Abigail made a quilt that has an area of 4800 square inches. The length of the quilt is 1 1/3 times the width of the quilt. What
mafiozo [28]

Answer:

L=132.66

36.18=W

Step-by-step explanation:

length=L

width=W

Area=A

A=L×W

L=11/3W

4800=11/3W×W

4800=11/3W²

3/11·4800=11/3W²·3/11

√1309.1=√W²

36.18=W

L=11/3×36.18

L=132.66

All answers are approximated.




6 0
3 years ago
Can someone help please
s344n2d4d5 [400]
Okay, so this is exponential. The formula for the exponental function is Y=ab^x

a is the y-intercept

b is the rate/ratio

x is the time

According to the graph, (remember the y-intercept is in the y-axis) so 2 is the y-intercept.

Knowing what the y-intercept is, you know what the answer is.

A.
5 0
3 years ago
Sonny's gymnastics class last one hour and 20 minutes the class starts at 3:50 p.m. at what time does the gymnastics class in
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4:10 is the time that the class ends, I think that's what you meant?
7 0
3 years ago
Read 2 more answers
If f(x)=x^2-5 and g(x)=6x then g(f(x)) is equal to
Romashka-Z-Leto [24]
G(x) = 6x 

<span>g(f(x)) </span>
<span>= 6((x^2) - 5) </span>
<span>= (6x^2) - 30 
</span>
so its equal to
<span>(6x^2) - 30</span>
3 0
3 years ago
Read 2 more answers
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