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noname [10]
3 years ago
14

Simplify 3(x+2)+5x-7 with steps... I am in 7th grade... Will give the brainliest!

Mathematics
2 answers:
Fynjy0 [20]3 years ago
7 0
Hey there,
3 (x + 2) + 5x - 7
3x + 6 + 5x - 7
3x + 5x + 6 -7
8 x - 1

Hope this helps :))

<em>~Top♥</em>
Virty [35]3 years ago
3 0
First expand the 3(x+2) bracket by multiplying out to give you 3x+6
Now, you have a full expression:
3x+6+5x-7
Collect like terms:
3x+5x=8x
6-7=-1
8x-1 is the answer simplified
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sleet_krkn [62]

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1:4

Step-by-step explanation:

6 0
3 years ago
Lupe’s Construction is building a rectangular house that is 16 feet longer than it is wide. They will be putting a 3-foot wide s
mr Goodwill [35]

Answer:

The length of the four pieces of protective strip is 96 feet

Step-by-step explanation:

Let the w be the width of the rectangular house and L is length. Since L = w + 16, its perimeter P = 2(w + L)

= 2(w + w + 16)

= 2(2w + 16)

Since the perimeter of the house P = 136 feet,

136 = 2(2w + 16)

dividing through by 2, we have

136/2 = (2w + 16)

68 = (2w + 16)

collecting like terms, we have

68 - 16 = 2w

52 = 2w

dividing through by 2, we have

w = 52/2

w = 26 feet.

Now, since the side walk is 3 foot wide all around, the width of the house plus sidewalk = w + 3 and the length of the house plus sidewalk = L + 3 = w + 16 + 3 = w + 19.

So, the perimeter of the house plus sidewalk which is the perimeter of the four pieces of protective strip is P' = 2(w + 3 + w + 19)

= 2(w + 22)

= 2(26 + 22)

= 2(48)

= 96 feet

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5 0
3 years ago
How do you add vectors? Add the vector 3,4 to the vector that goes 7 units at an angle of 2π/3.
Gekata [30.6K]

The sum of two vectors is (- 0.5, 10.1)

<u>Explanation: </u>

To add two vectors, add the corresponding components.

Let u =⟨u1,u2⟩ and v =⟨v1,v2⟩ be two vectors.

Then, the sum of u and v is the vector

u +v =⟨u1+v1, u2+v2⟩

(b)

Two vectors = ( 3, 4 )

angle 2π/3 = 120°

In x axis, the vector is = 7 cos 120°

                           = 7 X -\frac{1}{2} \\\\= -3.5

In y axis, the vector is = 7 sin 120°

                                  = 7 X 0.866

                                  = 6.062

The second vectors are ( -3.5, 6.062)

Sum of two vectors = [( 3 + (-3.5) ), (4 + 6.062)]

                              = (- 0.5, 10.1)

6 0
3 years ago
Ln bisects klm into two congruent angles measuring (3x-4) and (4x-27) Find klm
blsea [12.9K]
The answer would be 135 (B)
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3 years ago
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