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3 years ago

I am so confused please

Mathematics

2 answers:

sashaice [31]3 years ago

6 0

1) 8a
2) 2x
3) 8k
4) 19.25c
5) 11y-5
6) .25x+2
7) 7t+14
8) 3.2k+5
9) z+6x
10) 3n+4p
11) 2y+2x
12) 27g-3s
13) 11m+100
14) 2w+12
15) 3b+10
16) 7a+6
17) 16n+10
18) 3y+6x
19) 15p/2
20) 3s-2t

Len [333]3 years ago

4 0

What the other guy said is correct :)

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Caroline has some dimes and some quarters. She has a maximum of 15 coins worth at least $2.85 combined. If Caroline has 3 dimes,

gayaneshka [121]

Answer:

11, 12.

Step-by-step explanation:

Let q represent number of quarters.

We have been given that Caroline has a maximum of 15 coins worth at least $2.85 combined. We are also told that Caroline has 3 dimes. This means that total coins are less than or equal to 15.

We can represent this information in an inequality as:

$q+3\leq 15...(1)$

We are also told that the coins worth at least $2.85 combined. This means that the worth of all coins is greater than or equal to 2.85.

We know that each dime is worth $0.10 and each quarter is worth $0.25.

$0.25q+3(0.10)\geq 2.85...(2)$

Now, let us solve our system of inequalities.

From 1st inequality, we will get:

$q+3-3\leq 15-3$

$q\leq 12$

From 2nd inequality, we will get:

$0.25q+0.30\geq 2.85$

$0.25q+0.30-0.30\geq 2.85-0.30$

$0.25q\geq 2.55$

$\frac{0.25q}{0.25}\geq \frac{2.55}{0.25}$

$q\geq 10.2$

Upon combining our both inequalities, we will get:

$10.2\leq q\leq 12$

This means that numbers of quarters would be greater than or equal to 10.2 and less than or equal to 12.

Since we cannot have 0.2 of a coin, therefore, Caroline could have 11 or 12 quarters.

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3 years ago

How to solve with exponents and negatives

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3 years ago

Read 2 more answers

Hello in need of a math question answer for a test.

creativ13 [48]

Answer:

There are no roots

Step-by-step explanation:

The Roots are:- x-values for which the function equals zero

and this function doesn't intersect with x-axis (There are no X-values that we can plot into this function and get zero as output)

which mean there are no root for this function

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2 years ago

Three times the quantity of a number c increased by 7 is equal to the same number, c, decreased by 15

Yuliya22 [10]

After solving the given equation, we know that the value of c is -11.

<h3>What are equations?</h3>

An equation is a mathematical statement that contains the symbol "equal to" between two expressions with identical values.

As in 3x + 5 = 15, for example.

There are many different types of equations, including linear, quadratic, cubic, and others.

Let's learn more about math equations in this tutorial.

The three primary forms of linear equations are point-slope, standard, and slope-intercept.

Sc, we have the equation:

3c + 7 = c - 15

Now, calculate this equation for c as follows:

3c + 7 = c - 15

3c - c = -15 - 7

2c = -22

c = -22/2

c = -11

Therefore, after solving the given equation, we know that the value of c is -11.

Know more about equations here:

brainly.com/question/28937794

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Three times the quantity of a number c increased by 7 is equal to the same number, c, decreased by 15. What is c in this situation?

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1 year ago

What i s-4.966666 rounded to the nearest 100th

Rama09 [41]

Answer:

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Step-by-step explanation:

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3 years ago