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3 years ago

10) A box of crayons includes 4 black

Mathematics

2 answers:

laila [671]3 years ago

7 0

4/10=0.40=40% are colored

777dan777 [17]3 years ago

5 0

Answer:

40 percent

hope this helps!

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An in-ground pool is 34 feet long and x inches wide. Its brick walkway is 4 feet wide around the pool. What expression represent

bagirrra123 [75]

Answer:

$A_w=8x+336$

Step-by-step explanation:

From the question we are told that:

Length of pool $l_p=34$

width of pool $w_p=x$

Width of brick-walk way $w_b=4$

Generally the equation for Area of the pool $A_b$ is mathematically given by

$A_p=l_p*w_p\\\\A_p=34*x$

Generally the equation for Area of the pool with its walkway $A_w'$ is mathematically given by

$A_w'=l_w'+w_w'\\\\A_w'=l_w'+w_w'$

Where

$l_w'=length\ of\ pool\ with\ walkway\\\\l_w'=l_p+4+4\\\\l_w'=34+4+4\\\\l_w'=42$

Therefore

$w_w'=width\ of\ pool\ with walkway\\\\w_w'=w_p+8\\\\A_w'=42*(x+8)$

Generally the equation for pool's walkway $A_w$ is mathematically given by

$A_w=A_w'-A_p\\\\A_w=(42*(x+8))-(34x)$

$A_w=8x+336$

7 0

3 years ago

A company buys a digital scanner for $12,000.

tino4ka555 [31]

Answer:

it will be n=4

Step-by-step explanation:

12,000 1-n/5 =2,400n

12000-12000=2,400

2,400-12000=-9600

-2400 n=4

4 0

3 years ago

Simplify your answer as much as possible

loris [4]

9514 1404 393

Answer:

-4u^2/y+(5/2)y^3u^2

Step-by-step explanation:

The applicable rules of exponents are ...

(a^b)(a^c) = a^(b+c)

(a^b)/(a^c) = a^(b-c)

$(8y^2u^7-5y^6u^7)\div(-2y^3u^5)=\dfrac{8y^2u^7-5y^6u^7}{-2y^3u^5}\\\\=-4y^{2-3}u^{7-5}+\dfrac{5}{2}y^{6-3}u^{7-5}=\boxed{\dfrac{-4u^2}{y}+\dfrac{5}{2}y^3u^2}$

7 0

3 years ago

Sketching lines equations

anygoal [31]

Answer:

Step-by-step explanation:

A few suggestions:

Put the equations in y = mx + b format

create a table. choose some x and plug that in and solve for y

plot those point. connect the dots

8 0

3 years ago

An $80.00 coat is marked down 20%. It does not sell, so the shop owner marks it down an additional 15%. What is the new price of

stiv31 [10]

Answer:

$54.40

Step-by-step explanation:

First, find the new price after the 20% markdown:

80(0.8)

= 64

Then, find the price with the 15% markdown:

64(0.85)

= 54.4

So, the new price of the coat is $54.40

6 0

4 years ago