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DaniilM [7]
3 years ago
15

Drag each equation to show if it could be a correct first step to solving the equation

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
6 0

Answer:

3 + 4x = 36----->No

(4.3)+(4 . x)= 36------>Yes

4(3 + x)= 144--------->No

3+ x = 9-------> Yes

12 + x = 36------>No

12 + 4x = 36------->Yes

Step-by-step explanation:

The given equation is

4(3 + x) = 36

A correct first step is to expand the LHS to get:

12 + 4x = 36

Or to divide through by 4 to get:

3 + x = 9

Or just distribute to get:

4 \cdot 3 + 4 \cdot \: x = 36

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AB = x + 8
vivado [14]

Answer: The length of BC is 7

Step-by-step explanation: Assuming the lengths of the opposite sides of the quadrilateral are congruent, then

AB=DC and

AD=BC

Inputting the values of AB, DC and AD as given in the question:

x + 8 = 3x ...(1)

x + 3=? ...(2)

We have to solve for the value of x to get the actual lengths and thus ascertain BD.

From equation (1):

8 = 3x - x

8 = 2x

8/2 = x

Therefore, x = 4.

If x = 4 then equation(2) would be

4 + 3= 7.

Hence, the actual lengths of the quadrilateral are:

AB = 4 + 8. DC = 3(4)

=12. =12.

AD = 4 + 3. AD = BC

= 7. Therefore, BC = 7.

Hence, it is confirmed that quadrilateral ABCD is a parallelogram since both the opposite sides are proven to be congruent.

3 0
3 years ago
PLEASE Please answer ASAP!!! :)
d1i1m1o1n [39]

Answer: No it is not.

Step-by-step explanation: A rational number is a number that can easily be expressed as a fraction or decimal, and square root of 7 cannot be easily expressed.

6 0
2 years ago
Read 2 more answers
Gymnast Clothing manufactures expensive soccer cleats for sale to college bookstores in runs of up to 500. Its cost (in dollars)
Natalija [7]

Revenue, R = 130x

Profit, P = Revenue – Cost

 P = R – C

P = 130x – 2950 + 6x + 0.1x^2

At P = 0

0 = -2950 + 136x +0.1x^2

X = 21.355, -1381.355

Therefore, manufacture greater than 21.355 items to make profit. 

3 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!<br> who every gets it right I will give brainly and 20 points
Sindrei [870]

Unit price:

$3.03 for a gallon of gass

$0.05 per ounce of soap

$0.75 per bag of popcorn

Not a Unit Price:

$20 for 5 books

$33.00 for 2 avocadoes

hoped that helped

8 0
2 years ago
I need help i have 5 minutes left of class i will give brainest if answer make sure to show poof
Naya [18.7K]

Answer for teardrop shape:

64.27

Step-by-Step Explanation:

I used the area calculators on Goggle

Answer for square:

5.7

Explanation:

The shape is a square, so all the sides are equal

5.7 + 6.8 = 12.5

x = 5.7

Answer for trapezoid:

76.95

Explanation:

Again, Goggle

8 0
2 years ago
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