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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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Please help me it needs to be turned in tonight
Katarina [22]

Answer:

Step-by-step explanation:

1) x=14 y=40

2)a=10 b=37

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hope this helps

6 0
3 years ago
The table below describes a sequence of transformations that justify that two figures are similar. Which sentence below shows th
yuradex [85]

Answer:

dilation

Step-by-step explanation:

whenever the shape is dilated, or scaled by a factor of any number, the shape will change size and will become similar rather than congruent. congruent shapes have the same dimensions as the parent or original shape.

7 0
3 years ago
Read 2 more answers
Triangles A C B and M Q R are shown. Sides A B and M R are congruent. Angles C A B and M R Q are 42 degrees. Angle C B A is 53 d
miss Akunina [59]

By ASA postulate it can be say that the triangle ABC and triangle MRQ are congruent

<h3>What is Angle Sum Property?</h3>

The sum of all three angles(interior) of a triangle is 180 degrees, and the exterior angle of a triangle measures the same as the sum of its two opposite interior angles.

Using Angle Sum Property, in ΔMRQ

<M + <R + <Q= 180

<M + 42 + 85 = 180

<M = 180 -42

<M= 53°

Now, In ΔMRQ and ΔABC  

<A= <R ,

<B = <M

AB = MR

Hence, By ASA criteria ΔMRQ ≅ ΔABC  

Learn more about this concept here:

brainly.com/question/3486366

#SPJ1

4 0
2 years ago
Which is more 56 ounces or 3.5 pounds?
Brut [27]
3.5 pounds equals 56 ounces
8 0
3 years ago
What fraction is equivalent to 20 in simplest fraction form
SIZIF [17.4K]

Answer:

I believe its 20% or 20/100 or 1/5

Step-by-step explanation:

i mean, 20% is 20/100 or 1/5. the number already a fraction. the denominator is out of 100.

20% = 20/100

then you change it to simpliest form.

20 / 20 = 1

100 / 20 = 5 = 1/5

8 0
3 years ago
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