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3 years ago

Can someone solve number 11 please (image provided

Mathematics

1 answer:

taurus [48]3 years ago

8 0

Answer:3 packs of cups 4 napkins

Step-by-step explanation:if there are 24 cups in each pack you would need 3 packs which would be 72 cups. 2 packs would mean everyone wouldnt get a cup

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The amount of sales tax on a new car varies directly to purchase price of the car. If a 25,000 car pays 1,750 in sales taxes, wh

Hatshy [7]

Answer:

p = 3500/0.07

p = $50,000

Step-by-step explanation:

Your equation is: t = 0.07p

3500 = 0.07p

p = 3500/0.07

p = $50,000

5 0

4 years ago

PLEASE HELP ASAP WILL MARK BRAINLIEST

luda_lava [24]

Answer:

x=11

Step-by-step explanation:

7x-9-4(x-1)=28

7x-9-4x+4=28

3x-5=28

3x=33

x=11

4 0

3 years ago

The back-up generators at the local clinic use 25 gallons of oil in 3 hours and 45 minutes. At this rate, how much oil would the

sveticcg [70]

<span>The word problem gives a rate of oil consumption at a rate of 25 gallons per 3 hours and 45 minutes. 3 hours and 45 minutes can be displayed as 3.75 hours. so you can say the generator consumes oil at a rate of 25 gallons per 3.75 hours. The following equation give you the oil consumption on a per hour basis; 25/3.75 and that gives you 6.67 gallons per hour. In 6 hours the generator will consume 40 gallons.</span>

4 0

3 years ago

Cos3x=4cos^3x-3cosx prove

IgorC [24]

$\bf cos(\alpha + \beta)= cos(\alpha)cos(\beta)- sin(\alpha)sin(\beta)
\\\\\\
\textit{also recall that }cos(2\theta)=
\begin{cases}
cos^2(\theta)-sin^2(\theta)\\
1-2sin^2(\theta)\\
\boxed{2cos^2(\theta)-1}
\end{cases}
\\\\\\
and\qquad sin^2(\theta)+cos^2(\theta)=1\implies sin^2(\theta)=1-cos^2(\theta)\\\\
-------------------------------$

$\bf cos(3x)=4cos^3(x)-3cos(x)\\\\
-------------------------------\\\\
cos(3x)\implies cos(2x+x)\implies cos(2x)cos(x)-sin(2x)sin(x)
\\\\\\\
[2cos^2(x)-1]cos(x)-[2sin(x)cos(x)]sin(x)
\\\\\\
2cos^3(x)-cos(x)~~~~-~~~~2sin^2(x)cos(x)
\\\\\\
2cos^3(x)-cos(x)~~~~-~~~~2[1-cos^2(x)]cos(x)
\\\\\\
2cos^3(x)-cos(x)~~~~-~~~~[2cos(x)-2cos^3(x)]
\\\\\\
2cos^3(x)-cos(x)~~~~-~~~~2cos(x)+2cos^3(x)
\\\\\\
4cos^3(x)-3cos(x)$

6 0

3 years ago

Work out the total surface area of the hemisphere which has a radius of 10cm

Naddik [55]

Answer:

942 square cm

Step-by-step explanation:

$Total \: surface \: area \: of \: hemisphere \\ = 3\pi {r}^{2} \\ = 3 \times 3.14 \times {10}^{2} \\ = 9.42 \times 100 \\ = 942 \: {cm}^{2}$

5 0

3 years ago