2 years ago

Helpppp pleaseeeeeeee

Mathematics

1 answer:

Rainbow [258]2 years ago

3 0

Answer:

x= 6.85 or 89/13

Step-by-step explanation:

perimeter is sum of all sides added, so add them all and set them equal to 84

4(x-3) + 3x - 1 + 6x + 8 = 84

distribute

4x + 12 + 3x - 1 + 6x + 8 = 84

combine like terms

13x - 5 = 84

solve for x

x = 89/13 = 6.85

You might be interested in

Please help. I’ll mark you as brainliest if correct.

OlgaM077 [116]

Answer:

4600

Step-by-step explanation:

it is simply the sum of home credit which is

=3000 + 1600

=4600

5 0

3 years ago

How do I show my work on this problem ? I know the answer is -8,-10 because multiple people told me but I need to show my work

Simora [160]

Step-by-step explanation:

try adding them together that'll make sense duh lol

8 0

2 years ago

An average adult can hear sounds with frequencies between 20 waves per second and 16,000 waves per second. What is the wavelengt

frez [133]

Answer:

The wavelength, of a sound wave with a frequency of 20 waves per second is 15,000,000 m.

Step-by-step explanation:

In this question, we have to calculate the wavelength of a sound wave of frequency 20 waves per second.

We know that the speed of light in air/ vacuum is $3\times 10^{8}$ .

Now by the formula v = nλ , where v = speed of light in air/vacuum, n = frequency of the wave and λ = wavelength in meters,

we put the values

$3\times 10^{8}$ = 20 × λ

λ = $\frac{3\times 10^{8}}{20}$

λ = 15,000,000 m

6 0

3 years ago

Read 2 more answers

PLEASE HELP WOULD REALLY APPRECIATE IT<br><br>Write the number in standard form: <br><br>9.1×10^-9

MrMuchimi

Answer:

0.0000000091

..............

5 0

3 years ago

A clothing store stocks socks made of either cotton or wool, each in five colors, and each in seven sizes. How many items are ne

Makovka662 [10]

There are two types in five colours so 2x5=10. There are then seven sizes of each so 7x10=70. Your answer is C.70. I really need brainliest answers.

8 0

3 years ago

Read 2 more answers