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Zanzabum
3 years ago
12

Eighteen is fifteen less than the product of a number and three .Find the number

Mathematics
1 answer:
Levart [38]3 years ago
6 0

Answer:

x = 11

Explanation:

(x · 3 - 15) = 18

[ Step 1: Simplify both sides of the equation ]

x(3) − 15 = 18

3x + −15 = 18

3x − 15 = 18

[ Step 2: Add 15 to both sides ]

3x − 15 + 15 = 18 + 15

3x = 33

[ Step 3: Divide both sides by 3 ]

3x / 3 = 33 / 3

x = 11

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Find the surface area of a cylinder with a diameter of 10 and a height of 45. Use 3.14 for π. Round your answer to the nearest t
Marina CMI [18]
You can easily use online calculators for this.

Steps:
1) Find radius. 45 / 2 = 22.5
2) Substitute values (r) and (h) in the formula for surface area of a cylinder:
    SA = 2πr² + 2πrh
3) Solve the formula.

You should end up with 9542.59 units². This answer is using π.
To get the answer with (3.14), do the steps above.
    
4 0
3 years ago
Members of the cooking club would like to learn how to make peach ice cream. There are 14 people in the club. Each member will n
ohaa [14]

Answer:

Step-by-step explanation:

Total members = 14

Each member:

Peaches = 3

Pint of cream = 1

Cost

Peaches = x cent

Pint of cream = 46 cent

46 cent = $0.46

Cost per member = 3(x cent) + 0.46

= 3x cent + 0.46

Total cost for all members = 14(3x cent + 0.46)

= 42x cent + 6.44

8 0
3 years ago
Examine the right triangle. A right triangle with side lengths 17 centimeters and 48 centimeters. The hypotenuse is unknown. Wha
Dimas [21]

Answer:

The answer to your question is  c = \sqrt{2593}

Step-by-step explanation:

Data

right triangle

short leg = 17 cm

long leg = 48 cm

hypotenuse = ?

Process

-Use the Pythagorean theorem to find the answer

              c² = a² + b²

c = hypotenuse

a = short leg = 17 cm

b = long leg = 48 cm

- Substitution

             c² = 17² + 48²

-Simplification

             c² = 289 + 2304

             c² = 2593

-Result

             c = \sqrt{2593}

5 0
3 years ago
Read 2 more answers
Find the measure of ∠EGC. Circle A with chords EF and CD that intersect at point G, the measure of arc EC is 50 degrees, the mea
miv72 [106K]

Answer:

m∠EGC=70°

Step-by-step explanation:

we know that

The measure of the inner angle is the semi-sum of the arcs comprising it and its opposite

so

m∠EGC=(1/2)[arc EC+arc DF]

<u><em>Find the value of x</em></u>

we have

m∠EGC=(7x+7)°

arc EC=50°

arc DF=10x°

substitute and solve for x

(7x+7)°=(1/2)[50°+10x°]

14x+14=50+10x

14x-10x=50-14

4x=36

x=9

<u><em>Find the measure of angle EGC</em></u>

m∠EGC=(7x+7)°

substitute the value of x

m∠EGC=(7(9)+7)°=70°

8 0
3 years ago
Read 2 more answers
a water tank is 5cm tall and has a diameter of 3,5m . calculate the capacity (volume) of the tank .use π=3,14​
Evgesh-ka [11]

Step-by-step explanation:

Firstly convert the diameter into cm

t480812.5cm³hus 3.5×100=350cm

Volume=

\frac{\pi {d}^{2} h}{4}

\frac{3.14 \times (350) {}^{2} \times 5 }{4}

=480812.5cm³

8 0
2 years ago
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