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3 years ago

Evaluate this expression if a = 2, b = -1 and c = 1.

Mathematics

2 answers:

labwork [276]3 years ago

8 0

Substitute the values into the equation

2(2)+4(-1)-5(1)
4-4-5
-5

const2013 [10]3 years ago

4 0

Answer:

The answer is D. -5.

Step-by-step explanation:

Substitute the variables: 2(2) + 4(-1) - 5(1)

Multiply 2 by 2, and you get 4. Add 4 by the product of 4 and -1, which is -4, and you get 0. Subtract 0 by the product of 5 and 1, which is 5, and you get -5.

I hope this helped! :-)

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2x + 10 < 24 or -8x + 8 < -56

SIZIF [17.4K]

Answer:

Union of inqualities:

x<7 or x>8

(not sure if this helps or not sorry!)

7 0

3 years ago

Identify the terms. Then identify the coefficients of the variable terms of the expression. (Enter your answers as a comma-separ

tino4ka555 [31]

Answer:

The set of coefficients asociated with the given polynomial in ascending order is $[C] = \{4,0,5\sqrt{3}\}$ .

Step-by-step explanation:

Let $y = 5\sqrt{3}\cdot x^{2}+4$ , which is a polynomic function, defined as:

$y = \Sigma_{i=0}^{n}c_{i}\cdot x^{i}$ (1)

Where:

$c_{i}$ - i-th Coefficient.

$x^{i}$ - i-th Power.

$n$ - Grade of the polynomial.

We notice that given polynomial has degree 2 and can be rewritten by applying this definition:

$y = 4 + 0\cdot x + 5\sqrt{3}\cdot x^{2}$

Then, the set of coefficients asociated with the given polynomial in ascending order is:

$[C] = \{4,0,5\sqrt{3}\}$

7 0

3 years ago

Paul Havlik promised his grandson Jamie that he would give him $7,100 7 years from today for graduating from high school. Assume

Dominik [7]

Answer:

$\large \boxed{\$4100.07}$

Step-by-step explanation:

The formula for the future value (FV) of an investment earning compound interest is

$FV = PV \left (1 + \frac{r}{n} \right )^{nt}$

where

PV = the present value (PV) of the money invested

r = the annual interest rate expressed as a decimal fraction

t = the time in years

n = the number of compounding periods per year

Data:

FV = $7100

r = 8 % = 0.08

t = 7 yr

n = 2

Calculation:

$\begin{array}{rcl}\\7100& =& PV \left (1 + \dfrac{0.08}{2} \right )^{2 \times 7}\\\\& =& PV (1 + 0.04)^{14}\\\\& =&PV (1.04)^{14}\\& =& PV(1.731676)\\PV& =& \dfrac{7100}{1.731676}\\\\& =& \mathbf{4100.07}\\\end{array}\\\text{The present value of the money is $\large \boxed{\mathbf{\$4100.07}}$}$

4 0

3 years ago

HELP NOW!! PLEASE!! I NEED HELP!!!!

timama [110]

Answer:

-2

Step-by-step explanation:

14/7 = 2

So,

-14/7 = -2

Check:

-2 x 7 = -14

7 0

3 years ago

Read 2 more answers

A man invests $2000 in an account that pays 8.5% interest per year, compounded quarterly. (a) find the amount after 2 years? (ro

Inessa [10]

A man invests $2000 into an account that accrues 8.5% interest compounded quarterly. He made the deposit of 2 years , i.e. for 8 quarters ( or 8 compounding periods)

Amount after n years is calculated by following equation :

Amount = Principal * ( 1 + Interest rate per compounding period ) ^ no. of compounding periods

The amount in his account after 2 years = 2000 * ( 1 + 0.085/4) ^ 8

= 2000 * (1.02125 ) ^ 8

= 2000 * 1.18319

= $2366.39

4 0

3 years ago