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sergeinik [125]

3 years ago

9

The queen received a diamond brooch for her birthday. The largest gem weighed 5.1 carats. There were three other gems that weigh

ed 0.7 carats, 1.4 carat, and 2.6 carats. What was the total weight of the gems?

1 answer:

lyudmila [28]3 years ago

6 0

Answer:

9.8 carats.

Step-by-step explanation:

5.1 + 0.7 + 1.4 + 2.6

= 9.8

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A can of tuna has a volume 18pi cm3 and a height of 2 cm. Find the area of the label that wraps around the entire can and does n

Sphinxa [80]

Answer:

The area of the label is $12\pi\ cm^{2}$

Step-by-step explanation:

step 1

Find the radius

we know that

The volume of the cylinder (can of tuna) is equal to

$V=\pi r^{2} h$

In this problem we have

$V=18\pi\ cm^{3}$

$h=2\ cm$

substitute and solve for r

$18\pi=\pi r^{2} (2)$

Simplify

$18=r^{2}(2)$

$r^{2}=9$

$r=3\ cm$

step 2

<em>Find the lateral area of the can</em>

The lateral area of the cylinder (can of tuna) is equal to

$LA=2\pi rh$

we have

$r=3\ cm$

$h=2\ cm$

$LA=2\pi (3)(2)=12\pi\ cm^{2}$

5 0

3 years ago

The function f is defined by f(x)=x²-7. What is the value of f(3) ? A -16 B -2 C 2 D 16

xz_007 [3.2K]

Answer:

Option C is the answer

3 0

3 years ago

Read 2 more answers

In a class of 40 students, 5 like neither Nokia nor

Vikki [24]

Answer:

No student liked only Nokia

Step-by-step explanation:

The information can be illustrated as shown on the Venn diagram.

The number of students who liked only Nokia is x.

The sum of all regions in the Venn diagram should be 40.

We add all to get:

$5 + 5 + 30 + x = 40$

$40 + x = 40$

$x = 40 - 40$

$x = 0$

Therefore no one liked only Nokia

8 0

3 years ago

Calculate the sales tax for each item.

Brilliant_brown [7]

Answer:

1. $1.19

2. $2.25

3. $8.40

4. $120

5. $2.10

Step-by-step explanation:

Multiply the money by the sales tax. Calculators help.

3 0

3 years ago

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Determine the perimeter of a triangle with sides that measure 16.2 inches, 10.04 inches and 12.2 inches.

Ksju [112]

Answer:

Step-by-step explanation:

Solution,

The perimeter of a triangle=Sum of all sides

$16.2in+10.04in+12.2in\\=38.44inches$

Hope it will help you a lot.

5 0

3 years ago