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3 years ago

Help with 6th grade math!

Mathematics

2 answers:

Nimfa-mama [501]3 years ago

8 0

The perimeter of a rectangle is the sum of all its sides. As a formula, this is
P = w + w + l + l = 2w + 2l = 2(w + l),
where P is perimeter, w is the width, and l is length.

Let's apply this formula to your question and substitute given information, then solve for l.
P = 2(w + l)
10x + 6 = 2(3x - 3 + l).
10x + 6 = 6x - 6 + 2l
4x +12 = 2l
l = 2x + 6

Tom [10]3 years ago

4 0

Answer:

l = 2x + 6

Step-by-step explanation:

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X + 6y = 2 4x - 3y = 10 Pick the first step to solving this system of equations using the addition method.

podryga [215]

This one is the correct answer----->Multiply the bottom equation by 2 thus eliminating the y variable when the equations are added together.

X + 6y = 2 ....top
4x - 3y = 10...bottom

if we multiply the bottom equation by 2 .......... => 8x - 6y = 20
if we add it to the top one..........>(8+1)x +(6-6)y = (20+2)
then we solve for x => x = 22/9

then with the top equation, we solve for y == > y = -2/27

4 0

3 years ago

Help me plzzzzzzzzz solve for x

Svet_ta [14]

Answer:

$7) \frac{x+20}{x}=\frac{46}{30}$

$30(x+20)=46x$

$30x+600=46x$

$46x-30x=600$

$16x=600$

$x=75/2$

$x=37.5$

---------------------

$8) \frac{10}{3x+1} =\frac{22}{7x-1}$

$10(7x-1)=22(3x+1)$

$70x-10=66x+22$

$70x-66x=22+10$

$4x=32$

$x=\frac{32}{4}$

$x=8$

---------------------

hope it helps...

have a great day!!

4 0

3 years ago

Disney World in Orlando Florida is the most popular theme park in the world. More than 39 million people visit every year. It’s

sesenic [268]

Answer:

one billion eight hundred ninety million three hundred eighty thousand eight hundred

Step-by-step explanation:

43.12*43.84

8 0

3 years ago

Similar right triangle

adoni [48]

Answer: 6.25

Step-by-step explanation:

Because corresponding sides of similar triangles are proportional,

$\frac{x}{2.5}=\frac{6+4}{4}\\\\x=2.5\left(\frac{6+4}{4} \right)=\boxed{6.25}$

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2 years ago

2. Find m1 [] 147 [] 123 [] 90 [] 57

Ivahew [28]

To find the measure of angle 1, you add 33 and 57
That would equal 90
Since all triangles equal 180, you would subtract 90 from 180
So the answer would be 90.

6 0

3 years ago