All categories

3 years ago

Write a bracket to make the calculation correct 4 + 1 *7-2 =25

Mathematics

2 answers:

lakkis [162]3 years ago

8 0

Answer:

[4 + 1] x [7 - 2] = 25

Step-by-step explanation:

When you have the brackets around [4 + 1], you add them up to get 5. You then do [7 - 2] to get 5. Once you multiply 5x5, you get 25. Hope this helps! :)

<h3>CloutAnswers</h3>

Lelechka [254]3 years ago

6 0

Answer:

[4 + 1] *[7-2] =25

Step-by-step explanation:

[4 + 1] *[7-2] =25

We need to get to 25

What makes 25

5*5

4+1 =5

7-2 =5

5*5 =25

So we need brackets around 4+1 and around 7-2

You might be interested in

a jeweler buys a ring from a jewelry maker for $125 he make up the price by 135% for sale in a store what is the selling price o

lidiya [134]

125 x 1.35= $168.75
168.75 + (168.75 x 0.075)= $181.41

6 0

3 years ago

The first five terms of an arithmetic sequence are 8, 13/2, 5, 7/2, and 2. Which function, f(x), could be used to describe the x

juin [17]

Answer:

f(x) = 8 - 1.5x

Step-by-step explanation:

Here, we want to write a function that can be used to describe the x th term of the sequence

Mathematically, this can be calculated by looking at the numbers in the sequence

The difference between each successive term

is -1.5 ( 6.5-8, 3.5 -5)

So the formula for then x th term will be;

f(x) = 8 - 1.5x

where x refers to the number of the term , for example the 4th term

5 0

3 years ago

Read 2 more answers

The probability distribution of a random variable X is given. x 1 2 3 4 P(X = x) 0.4 0.1 0.3 0.2 Compute the mean, variance, and

Readme [11.4K]

Mean:

$E(X) = \displaystyle \sum_{x\in\{1,2,3,4\}}x\,P(X=x) = 1\times0.4 + 2\times0.1 + 3\times0.3 + 4\times0.2 = \boxed{2.3}$

Variance:

$\displaystyle V(X) = E\left((X-E(X))^2\right) = E(X^2) - E(X)^2 \\\\ E(X^2) = \sum_{x\in\{1,2,3,4\}}x^2\,P(X=x) = 1^2\times0.4 + 2^2\times0.1 + 3^2\times0.3 + 4^2\times0.2 = 6.7 \\\\ \implies V(X) = 6.7 - 2.3^2 = \boxed{1.41}$

Standard deviation:

$\sigma_X = \sqrt{V(X)} = \sqrt{1.41} \approx \boxed{1.19}$

5 0

3 years ago

Please help im so confused?

sattari [20]

Lets get started :)

The area formula of a cylinder is:
Area = $2(radius)^2+2 \pi (radius)(height)$

We are given:
The radius: 6 units
The height: 15 units

Apply the formula!

A = $2 \pi (6)^2+2(6)(15)$
= $72 \pi + 180 \pi$
= $252 \pi$ units²

Your answer will be option D

3 0

3 years ago

Pls answer<br><br><br><br> WARNING : NON SENSE ANSWER REPORT TO MODERATOR

Hunter-Best [27]

Answer:

- 60/49 would be the answer

8 0

3 years ago