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2 years ago

The sum of 5 fifteens and 3 fifteens

Mathematics

2 answers:

Flauer [41]2 years ago

4 0

Answer:

(5 x 15) + (3 x 15) = 120

Step-by-step explanation:

5 x 15 = 75

3 x 15 = 45

75 + 45 = 120

Hope this helps :)

DedPeter [7]2 years ago

3 0

Answer:

5 * 15 = 75

3 * 15 = 45

45 + 75 = 120

Step-by-step explanation:

When you have a equation like that, you need to multiply. It is a faster way to solve the problem.

You had 15 five times.

15+15+15+15+15= 75 It equals the same thing because it is the same as 5 * 15

Same for the three fifteens.

15+15+15= 45.

The sum of the whole equation is 120 because you add 75 and 45.

Hope this helps, have a good day/night. Stay safe and healthy!

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Calcular el área y el perímetro de un círculo que tiene 50 cm de radio

gulaghasi [49]

Answer:

Area: 7850 square cm

Perimeter: 314 cm.

Step-by-step explanation:

The area is $\pi r^{2}$ . With r=50, $\pi 50^{2}$ =2500π which is about (2500)(3.14)=7850.

The perimeter is $2\pi r$ which is the same as (diameter)(π). The diameter is 100, so $100\pi$ which is about (100)(3.14)=314.

8 0

2 years ago

A construction crew is lengthening a road. Let y represent the total length of the road (in miles). Let x represent the number o

Bumek [7]

I believe the answer is 57 divided by 5

7 0

3 years ago

Determine the amplitude, period, and phase shift of the function f(x)=cos (8(x-1))+2

SCORPION-xisa [38]

We have been given a function $f(x)=\text{cos}(8(x-1))+2$ . We are asked to find the amplitude, period and phase shift of the function

We can see that our given function is in form $f(x)=A\cdot \cos(B(x-C))+D$ , where,

$|A|$ = Amplitude.

Period = $\frac{2\pi}{|B|}$

C = Horizontal shift,

D = Vertical shift.

We can see that value of a is 1, therefore, the amplitude of given function would be 1.

We can see that B is equal to 8, so we will get:

$\text{Period}=\frac{2\pi}{|B|}= \frac{2\pi}{|8|}=\frac{\pi}{4}$

Therefore, the period of given function is $\frac{\pi}{4}$ .

Since the value of C is 1, therefore, horizontal shift is 1.

Since the value of D is 2, therefore, vertical shift would be 2.

4 0

2 years ago

In a fishing competition Johannes and Peter together caught 48 fish.

Alenkasestr [34]

John caught 18 fishes and Peter caught 30 fishes.

Step-by-step explanation:

Let,

Fishes caught by John = x

Fishes caught by peter = y

Total fishes caught = 48

According to given statement;

x+y=48 Eqn 1

x= $\frac{3}{5}y$ Eqn 2

Putting Eqn 2 in Eqn 1;

$\frac{3}{5}y+y=48$

Multiplying each term by 5;

$5*\frac{3}{5}y+5*y=48*5\\3y+5y=240\\8y=240$

Dividing both sides by 8

$\frac{8y}{8}=\frac{240}{8}\\y=30$

Putting y=30 in Eqn 1

$x+30=48\\x=48-30\\x=18$

John caught 18 fishes and Peter caught 30 fishes.

Keywords: linear equation, substitution method

Learn more about substitution method at:

#LearnwithBrainly

4 0

2 years ago

Kyra travels 300 feet on her new bike. How many times did the wheel turn if her bike wheel has a diameter of two feet?

klemol [59]

I think is 150
I hope I helped it’s probably best to double check tho

6 0

2 years ago