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Masteriza [31]
3 years ago
12

Hi please can you help me this is a new topic and I’m very confused

Mathematics
1 answer:
olchik [2.2K]3 years ago
8 0

Answer: the large jar is cheaper

Step-by-step explanation:

If you divide the £1.54 by 440g and £1.26 by 340g, you'll find which one is cheaper per gram :

1.54/440 = 0.0035

1.26/340 = 0.0037

So, by comparing both prices/gram, you've found that the large jar is cheaper.

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Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the
insens350 [35]

Answer:

So, the volume V is

V=\frac{14\pi}{3}

Step-by-step explanation:

We have that:

y=7x\\\\y=0\\\\x=1\\\\x=-4\\

We have the formula:

V=2\pi\int_a^b x(g(x)-f(x))\, dx\\\\g(x)>f(x).

We calculate the volume V, we get

V=2\pi\int_a^b x(g(x)-f(x))\, dx\\\\V=2\pi\int_0^1 x(7x-0)\, dx\\\\V=2\pi\int_0^1 7x^2\, dx\\\\V=2\pi\cdot 7\left[\frac{x^3}{3}\right]_0^1\\\\V=14\pi\left(\frac{1}{3}-\frac{0}{3}\right)\\\\V=\frac{14\pi}{3}

So, the volume V is

V=\frac{14\pi}{3}

We use software to draw the graph.

6 0
3 years ago
Ishi bought a canvas and 6 tubes of paint for $24.45. If the canvas cost $6.45, what equation would represent this problem?
DedPeter [7]

$24.95−$6.95=$18. Thus 8 tubes of paint cost $18.

$188=$2.25 for 1 tube of paint.

Explanation:

Once you remove the cost of the canvas from the total price, you're left with only the cost of the 8 tubes of paint.

This is represented by

$24.95−$6.95=$18

If 8 tubes of paint cost $18, then all we have to do is divide 18 by 8 to get the cost of each individual tube of paint.

Thus

$188=$2.25

is the cost for one tube of paint.

Hope this is helpful to you..

Mark as brainlist

4 0
3 years ago
Express in rectangular form (7(cos 85 degrees + isin 85 degrees))x(2(cos 95 degrees + i sin 95 degrees))
asambeis [7]
After carefully looking over my notes and gathering all my knowledge of college mathematics, I can honestly say that I have no idea what the answer is.
5 0
3 years ago
A 7 kg ham costs $19/kg. Find the cost per pound.
stepan [7]

Answer: \$8.62/\text{Pound}

Step-by-step explanation:

Given

There is 7\ kg of ham available which costs

cost=\$\ 19/kg

i.e.

1\ kg\ \text{costs}\ \$19

and we know

1\ kg=2.204\ \text{pound}

So, 2.204\ \text{Pound costs}\ \$19

thus 1\ \text{Pound costs}\ \dfrac{19}{2.204}=\$8.62/\text{Pound}

4 0
3 years ago
What percent of 290 is 120?
bogdanovich [222]

Answer:

41.4%

Step-by-step explanation:

120/290 = x/100

290x = 120 * 100

x = 41.3793...

4 0
4 years ago
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