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3 years ago

No Link or I’m blocking you :)

Mathematics

1 answer:

DaniilM [7]3 years ago

8 0

Answer:

- 55

Step-by-step explanation:

20 - 15(2²· 5/4) = Exponent
20 - 15(4 · 5/4) = Parenthesis
20 - 15(5) = Multiplication
20 - 75 = Subtraction
- 55

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Two items cost $72.49 and $36.24. How much would you pay if there is a discount of 25% on both items?

k0ka [10]

Answer:

$81.5475 or to round it $81.55

Step-by-step explanation:

Simple steps:

1) Add the 2 items

2) Multiply by 0.75. because 25% discount = 75% of item

($72.49+$36.24)x0.75 = $81.5475 or $81.55

5 0

3 years ago

Subtract 7x+27x+2 from -5x^2-2x−5x 2 −2x.

kicyunya [14]

Simplified value of subtraction of 7x+27x+2 from -5x^2-2x−5x 2 −2x. is $-10x^{2} -38x-2$ .

Given Expressions 7x+27x+2 and -5x^2-2x−5x 2 −2x.

Expressions refers to the combination of numbers, variables and symbols. It represents the relationship between variables. They are solved for finding out the value of variables. It is mainly not in equal to form. Subtraction is possible when subtracting the coefficients of same variable.

We have to subtract 7x+27x+2 from -5x^2-2x−5x 2 −2x. and to do this we need to first solve the expressions itself.

7x+27x+2=34x+2------------------1

$-5x^{2} -2x-5x^{2} -2x$ = $-10x^{2} -7x-2x$ --------------------2

Now subtract 1 from 2

= $-10x^{2} -7x-2x$ -34x+2

= $-10x^{2} -38x-2$ .

Hence the simplified value of subtraction is $-10x^{2} -38x-2$ .

Learn more about expressions at brainly.com/question/723406

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4 0

2 years ago

Kelsey wants to split 19.2 feet of ribbon equally

timama [110]

Answer:

The answer is 115.2.

Step-by-step explanation:

7 0

3 years ago

Which list is in order from least to greatest? A) 9.4 * 10^-8, 9.25 * 10^-6, 2.5 * 10^3, 7* 10^3 B) 2.5 *10^3, 7 * 10^3, 9.25 *

vladimir1956 [14]

ANSWER

A) 9.4 * 10^-8, 9.25 * 10^-6, 2.5 * 10^3, 7* 10^3

EXPLANATION

The numbers are given in standard form.

The first criteria we will use to order them is the exponents.

The bigger the exponents the bigger the number.

The second criteria is that, if the exponents of any two numbers are the same, then we use the numbers multiplying the powers of 10 to order.

$9.4 * 10^{-8} \: < \: 9.25 * 10^{-6} \: < \: 2.5 * 10^3 \: < \: 7* 10^3$

The correct choice is A.

6 0

4 years ago

Read 2 more answers

Each set of three points is collinear. Find each missing x- or y-value. Enter each answer to the nearest hundredth. (6, 10.2), (

Dima020 [189]

Considering that the points are part of the same linear function, the missing x-value is given by:

a. 1.1.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.

b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

Given two points, the slope is given by <u>change in y divided by change in x</u>. In this problem, we are given points (6, 10.2) and (1.5, 3.45), hence the slope is:

m = (10.2 - 3.45)/(6 - 1.5) = 1.5.

Hence:

y = 1.5x + b.

When x = 6, y = 10.2, hence we use it to find b as follows:

10.2 = 1.5(6) + b

9 + b = 10.2

b = 1.2.

Hence the function is:

y = 1.5x + 1.2.

The value of x when y = 2.85 is given by:

y = 1.5x + 1.2.

2.85 = 1.5x + 1.2.

1.5x = 1.65.

x = 1.65/1.5

x = 1.1.

Hence option A is correct.

More can be learned about linear functions at brainly.com/question/24808124

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4 0

2 years ago