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Vlad [161]
3 years ago
13

May u plz help me I don’t understand?

Mathematics
1 answer:
Ainat [17]3 years ago
7 0

I believe #7  is c but i dont know the other one

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May anyone help me with this please
balu736 [363]

Answer:

x = - 8, x = - 4

Step-by-step explanation:

Given

x² + 15x + 30 = 3x - 2 ( subtract 3x - 2 from both sides )

x² + 12x + 32 = 0 ← in standard form

Consider the factors of the constant term (+ 32) which sum to give the coefficient of the x- term (+ 12)

The factors are + 8 and + 4 , since

8 × 4 = + 32 and 8 + 4 = + 12 , then

(x + 8)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 8 = 0 ⇒ x = - 8

x + 4 = 0 ⇒ x = - 4

5 0
3 years ago
Help please!! I'm very confused
ikadub [295]

Answer:

Step-by-step explanation:

1 st box = 34

2nd box = 152

3rd box = 0.4

4 th box = <u>1.98333333333</u>

7 0
3 years ago
Given: Quadrilateral DEFG is a parallelogram.
levacccp [35]

Answer:

The correct option is A.

Step-by-step explanation:

It is given that  DEFG is a parallelogram.

Draw the diagonals DF and EG. Place point H where DF and EG intersect.

In triangle HGD and HEF

,

∠HGD ≅ ∠HEF                            (Alternate Interior angle)

∠HDG ≅ ∠HFE                      (Alternate Interior angle)

By the definition of a parallelogram, the opposite sides of a parallelogram are congruent.

DG ≅ EF                                      (Opposite sides of parallelogram)

According to ASA postulate, two triangles are congruent if any two angles and their included side are equal in both triangles.

So, by using ASA criterion for congruence we get,

ΔDGH ≅ ΔFEH

Since corresponding sides of congruent triangles are congruent, therefore

GH ≅ EH                      (CPCTC)

DH ≅ FH                     (CPCTC)

Option A is correct.

8 0
4 years ago
How to graph -4x+6y=12
ratelena [41]
First u would out it in slope intercept form which would be y=2/3x+2 then u would graph it
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6 0
4 years ago
-2(2x-o.8)=21.6 what does x equal?
frez [133]
-2(2x - 0.8) = 21.6

-4x + 1.6 = 21.6
-4x = 20

x = -5
8 0
4 years ago
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