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White raven [17]
3 years ago
7

Which expression is equivalent to −40+(−20)+(−60) ?

Mathematics
2 answers:
NARA [144]3 years ago
8 0
I think the answer is the first one
timurjin [86]3 years ago
6 0

-20+(-40)+(-60) The first anwser

I hope this helps :D

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Find y if (6, 2y) & (4, -1) has a slope of 13/3
lina2011 [118]

Answer:

value of y is 23/6

Step-by-step explanation:

m =  \frac{y2  -  y1}{x2 - x1}

(6,2y)

(4,-1)

m = (2y+1)/(6-4)

13/3 = (2y+1)/2

3(2y+1) = 2(13)

6y + 3 = 26

6y = 23

y = 23/6

7 0
4 years ago
For 3x2 - 4x+ 1, match the following:
Usimov [2.4K]

Constant: 1

Degree: 2

Coefficient : 3 and -4

Algebraic expression: 3x^2-4x + 1

Variable : x

<em><u>Solution:</u></em>

<em><u>Given expression is:</u></em>

3x^2-4x + 1

We have to find the constant, degree, coefficient , algebraic expression and varibale

<h3><u>Constant:</u></h3>

In Algebra, a constant is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number like 1, 2

In the given expression, constant is 1

<h3><u>Degree:</u></h3>

The largest exponent the variable has in a polynomial with one variable

In the given expression, largest exponent is 2

Thus degree of polynomial is 2

<h3><u>Coefficient:</u></h3>

The coefficients are the numbers that multiply the variables or letters

In 3x^2-4x + 1 , coefficients are 3 and -4

<h3><u>Algebraic expression:</u></h3>

An algebraic expression is a mathematical expression that consists of variables, numbers and operations.

Here the algebraic expression is:

3x^2-4x + 1

<h3><u>Variable:</u></h3>

The letters x, y, and z are common generic symbols used for variables.

Thus the variable in given expression is x

3 0
3 years ago
Simpson deposits $1,200 in a savings account that earns simple interest at the rate of 5% per year. What interest does he earn a
Vesnalui [34]

Answer:

1,260

Step-by-step explanation:

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3 years ago
Regina purchased a new VCR for $215. The sales tax is $11.83! What is the sales tax rate ?
Daniel [21]

Answer:

the sales tax rate is 5.50%

Step-by-step explanation:


4 0
4 years ago
Find the value of x in the diagram and explain your reasoning
Paul [167]

Answer:

C 4.5 the two triangles in the diagram are similar.

Step-by-step explanation:

Since, the two triangles in the diagram are similar.

Therefore,

4 \times x = 3 \times 6 \\  \\ x =  \frac{18}{4}  \\  \\ x = 4.5

7 0
3 years ago
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