3 years ago

Help needed for this math question.

Mathematics

1 answer:

nekit [7.7K]3 years ago

4 0

Is this algebra or geometry??

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2x - 1 = 7 I need help with this equation

77julia77 [94]

Answer:

×=4

Step-by-step explanation:

2x-1=7. so you have to add the 1 to both sides.

2x=8. then you divide the 2 on both sides to get x by itself.

x=4

5 0

3 years ago

Read 2 more answers

The length of a rectangle is 3 more yrd than twice the width. The area is 869yrd^2

Otrada [13]

Width=20.108 yrd and Length=43.216 yrd

Step-by-step explanation:

Let width = w

Length =3+2w

Area = 869 yrd^2

We need to find length and width of rectangle.

The formula used is:

$Area= length*width$

Putting values:

$Area= length*width$

$869= (3+2w)*(w)$

$869= 3w+2w^2$

$2w^2+3w-869=0$

Using quadratic equation to find value of width w:

$w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

a=2, b=3 and c=-869

$w=\frac{-3\pm\sqrt{(3)^2-4(2)(-869)}}{2(2)}$

$w=\frac{-3\pm\sqrt{6961}}{4}$

$w=\frac{-3\pm 83.4}{4}$

$w=\frac{-3+83.4}{4}\,\,and\,\,w=\frac{-3-83.4}{4}$

$w=20.108\,\,and\,\,w=-21.6$

Since width can't be negative so, width w=20.108

Length will be: L=3+2w = 3+2(20.108)=3+40.216=43.216

So, Width=20.108 yrd and Length=43.216 yrd

Keywords: Area of rectangle

Learn more about Area of rectangle at:

#learnwithBrainly

4 0

3 years ago

Write in an algebraic expression <br><br> the n power of 11 is greater than 35

nexus9112 [7]

That would be an inequality.
11^n > 35

6 0

3 years ago

9/29/2020

tangare [24]

Answer:

It would be supplementary!

Step-by-step explanation:

Because the two angles add up to 180

plz add me to brainliest!!!

3 0

3 years ago

Fulton Gardens buys 6,300 flower bulbs. If 70 bulbs can be planted in each flower bed, how many flower beds are needed to plant

ki77a [65]

Answer:

Step-by-step explanation:

6300/70=90

6 0

3 years ago