2 years ago

Help ASAP

Mathematics

1 answer:

kramer2 years ago

5 0

Answer:

x=19/5

Step-by-step explanation:

x*2+8x=38

10x =38

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Pencils sell for $2.98 per dozen. A teacher bought 288 pencils for his classes. How much did the pencils cost?

babymother [125]

the anser is $71.52

Step-by-step explanation:

divide 288 by 12 than multiply by 2.98

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2 years ago

Find the value of x (3/5)^x(5/3)^2x=125/27

lesya692 [45]

Given:

The equation is

$\left(\dfrac{3}{5}\right)^x\left(\dfrac{5}{3}\right)^{2x}=\dfrac{125}{27}$

To find:

The value of x.

Solution:

We have,

$\left(\dfrac{3}{5}\right)^x\left(\dfrac{5}{3}\right)^{2x}=\dfrac{125}{27}$

$\left(\dfrac{5}{3}\right)^{-x}\left(\dfrac{5}{3}\right)^{2x}=\dfrac{5\times 5\times 5}{3\times 3\times 3}$ $[\because \left(\dfrac{a}{b}\right)^{-m}=\left(\dfrac{b}{a}\right)^{m}]$

$\left(\dfrac{5}{3}\right)^{-x+2x}=\dfrac{5^3}{3^3}$ $[\because a^ma^n=a^{m+n}]$

$\left(\dfrac{5}{3}\right)^{x}=\left(\dfrac{5}{3}\right)^{3}$

On comparing the exponents, we get

$x=3$

Therefore, the value of x is 3.

8 0

2 years ago

A rectangular ballroom is being carpeted. The room measures 30 feet by 25 feet. If the carpet costs $3.00 per square foot, then

Taya2010 [7]

Answer:

$2250

Step-by-step explanation:

30 x 25 = 750 -> area

750 x 3= 2250

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2 years ago

Help? ill mark brainlest

Ivahew [28]

Answer:

Step-by-step explanation:

is x ≤ -19 for inequality notation

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2 years ago

Adriano runs a website that helps writers write better stories. Every month, Adriano receives a subscription fee of $5 from each

Diano4ka-milaya [45]

Answer: $1,150 this month

Step-by-step explanation:

200-10 = 190

190+40 = 230

230*5 = 1,150

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3 years ago