If a = 5 and b=2 then find the value of - 2ab and - 3a+b

Answers

Answer 1
-2ab = -2(5)(2) = -20
-3a+b = -3(5)+2 = -13
Answer 2

Answer:

-2ab = -20-3a + b = -13

Concept:

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

PART I: Find the value of -2ab

Given information

a = 5

b = 2

Given expression

-2ab

Substitute values into the expression

-2 (5) (2)

Simplify by multiplication

=-10 (2)

=[tex]\boxed{-20}[/tex]

--------------------------------------------------------

--------------------------------------------------------

PART II: Find the value of -3a + b

Given information

a = 5

b = 2

Given expression

-3a + b

Substitute values into the expression

-3 (5) + (2)

SImplify by multiplication

=-15 + (2)

Simplify by addition

=[tex]\boxed{-13}[/tex]

Hope this helps!! :)

Please let me know if you have any questions


Related Questions

If f(x) = log(x), what is the transformation that
1
occurs if g(x) =
log(x) - 1?
3

Answers

a y no eso s i gamas

e s k i u s m i atrapada

What is the answer A B C or D. WILL GIVE BRAINLIEST

Answers

your answer is 1/36 because if you spin once it would be 1/18 and if spin x2 the answer would be 1/36

please answer the question above and pick an answer choice from the ones provided

Answers

Answer:

1,2 and 4 are equivalents. 3 is not equivalent

2P-I, mark that one :l

Step-by-step explanation:

The volume of a crate with length of x feet, width of 8 - x feet, and a height of x - 3 feet is given by V(x)=x(8−x)(x−3) find the maximum volume of the crate and the dimensions for this volume

Answers

First, we need to find the maximum volume. In order to do this, we will first look at the dimensions of x and 8-x in the equation for volume. We can see that as x increases, so does 8-x. This means that there is a positive correlation between them. This also tells us that as x continues to increase, there will be a point where 8-x will equal 0. The maximum volume will occur when 8-x equals 0.

Therefore, the dimensions for the maximum volume are x=8 and x=-3.

Now we can solve for the actual maximum volume:

V max =(8)(8)-(3)(8)=64.

The maximum volume is 64 cubic feet and the dimensions for this volume are 8x=-3

Given that g(x)= 2x^2 - 3x + 19, find each of the following. A.) g(0) B.) G (-1) C.) g(3) D.)g(-x) E.) G (1-t)

Answers

Answer:

Given:

g(x)= 2x² - 3x + 19

Evaluate each value:

A)

g(0) = 2(0)² - 3(0) + 19 = 19

B)

g(-1) = 2(-1)² - 3(-1) + 19 = 2 + 3 + 19 = 24

C)

g(3) = 2(3)² - 3(3) + 19 = 18 - 9 + 19 = 28

D)

g(-x) = 2(-x)² - 3(-x) + 19 = 2x² + 3x + 19

E)

g(1 - t) = 2(1 - t)² - 3(1 - t) + 19 = 2(1 - 2t + t²) - 3 + 3t + 19 = 2t² - 4t + 2 + 3t + 16 = 2t² - t + 18

sorry if is wrong,..........;

Solve ( 9 - r) ( 2 - 3r) using the FOIL method. QUICK PLEASE!

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\textsf{(9 - r)(2 - 3r)}[/tex]

[tex]\textsf{= 9(2) + 9(-3r) + 2(-r) + (-r)(-3r)}[/tex]

[tex]\mathsf{= 18 - 27r - 2r + 3r^2}[/tex]

[tex]\mathsf{= 3r^2 + 18 - 27r - 2r}[/tex]

[tex]\boxed{\large\text{COMBINE the LIKE TERMS}}[/tex]

[tex]\mathsf{= 3r^2 + 18 + (-27r - 2r)}[/tex]

[tex]\mathsf{= 3r^2 + 18 - 29r}[/tex]

[tex]\mathsf{= 3r^2 - 29r + 18}[/tex]

[tex]\boxed{\large\textsf{Therefore, your answer is: \large\boxed{\mathsf{3r^2 - 29r + 18}}}}\large\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

what is 550÷1000000??
This is a long division problem.​

Answers

Answer:

[tex]5.5*10^{-4}=\frac{11}{20000}=.00055[/tex]

Step-by-step explanation:

[tex]550/1000000=55/100000[/tex]          | Take one 0 from each side of the divider

Now that it's simplified, we can more easily solve the problem:

[tex]55/100000=5.5*10^{-4}[/tex]

We can also write this as a fraction or a decimal:

[tex]5.5*10^{-4}=\frac{11}{20000}=.00055[/tex]

what is 28.8 classified as in the real number system​

Answers

Answer:

A rational number

Step-by-step explanation:

Answer:

Decimal number

Step-by-step explanation:

28.8 is a decimal

Converting to fraction

[tex]\\ \sf\longmapsto 28.8[/tex]

[tex]\\ \sf\longmapsto \dfrac{288}{10}[/tex]

[tex]\\ \sf\longmapsto \dfrac{144}{5}[/tex]

[tex]\\ \sf\longmapsto 28\dfrac{4}{5}[/tex]

1. Lựa chọn yêu cầu cần đạt trong Chương trình Giáo dục phổ thông môn Toán 2018 lớp 3, xây dựng một công cụ sử dụng trong đánh giá thường xuyên. Trình bày định hướng sử dụng công cụ đánh giá đã xây dựng trong dạy học môn Toán lớp 3 theo hướng hình thành, phát triển năng lực, phẩm chất của học sinh.

Answers

Answer:

So basically you add x with 9 and you get 9x

Evaluate the function f(x)=x^2+6x+2 at the given values of the independent variable and simplify.
a. f(-8)
b. f(x+2)
c. f(-x)

Answers

Answer:

a) 18

b)x^2+10x+18

c)x^2 -6x+2

Step-by-step explanation:

This is a case of plugging in the value into f(x).

a) f(-8)= -8^2 + 6(-8) +2

f(-8)= 64 + (-48) +2

f(-8)=64 + (-46)

f(-8)=18

b)  f(x+2)= (x+2)^2+6(x+2)+2

So here I'll take a break to explain what's going on, because x+2 is a binomial meaning two terms and it is being squared I have to multiply the whole thing by itself. Meaning: (x+2) x (x+2), this is also known as foiling!! and for the next part its distributing 6 into x and 2.

    f(x+2)= x^2+4x+4+6x+12+2

I'll reorder it

 f(x+2)= x^2+4x+6x+12+2+4

    f(x+2)= x^2+10x+18

c) f(-x)= -x^2+6(-x) +2

f(-x)= x^2 -6x+2

√5(√10+√3)

SHOW HOW YOU GOT THE ANSWER​

Answers

√5(√10 + √3) = √(5 · 10) + √(5 · 3) =

= √50 + √15 = √(25 · 2) + √15 =

= √(5² · 2) + √15 = 5√2 + √15 ← the end

f(x) = 5x^2-x+9
find the difference quotient hurry!!!

Answers

Answer:

10x+5h-1

Step-by-step explanation:

Find f ( x + h) and f  (x), and plug these values  into difference quotient formula.

Answer:

10x + 5h − 1

Step-by-step explanation:

10x + 5h − 1

(a+b square)-(a-b square)

Answers

Answer:

[tex] {(a + b)}^{2} - {(a - b) }^{2} \\ = 1[/tex]

In algebra 0 is written as 1 according to rule.

What is the area of the following composite figure? All angles are right angles. ​

Answers

Answer:

24 meters squared

Step-by-step explanation:

2 + 1 + 1 = 4

5 x 4 = 20

(2 x 1) x 2 = (2) x 2 = 4

20 + 4 = 24 meters squared

Sue had a circular picture that she wanted to frame. If the picture's frame diameter was
7.5 inches, how much is the minimum framing material did she need in inches?

Answers

sue had 7.5 inches framing

3. 20 + -4(32 - 6) =

Answers

Answer:

-84

Step-by-step explanation:

20 + [-4(32 - 6) ]

20 + [-4(26) ]

20 + (-104)

20 - 104

-84

Solve the radical equation, if possible.

Answers

Answer: C

Step-by-step explanation:

3x-3 ≥ 0 ==> x ≥ 1

3x+6 ≥ 0 ==> x ≥ -2

So: condition x ≥ 1

[tex]\sqrt{3x-3} +1=\sqrt{3x+6} \\\\\sqrt{3x+6} -\sqrt{3x-3} =1 \ squaring\\\\3x+6+3x-3-2\sqrt{(3x+6)(3x-3)} =1\\\\6x+2=2\sqrt{(3x+6)(3x-3)}\\\\\sqrt{(3x+6)(3x-3)}=3x+1\ squaring \\\\(3x+6)(3x-3)=(3x+1)^2\\\\9x^2+18x-9x-18=9x^2+6x-1\\\\3x=19\\\\x=\dfrac{19}{3} \\\\sol=\{\dfrac{19}{3}\}\\\\Answer\ C\\[/tex]

Simplify the expression and write your answer in
scientific notation: (1.9 X 105)3

Answers

(1.9 x 10^5)^3 = 1.9^3 x 10^15 = 6.859 x 10^15

h(x) = x - 3
g(x) = -2x2 + 4x
Find h (x) · g(x)

-3x^4 + 9x^3 - x + 3

-2x^3 + 10x^2 - 12x

2x^3 + 10x^2 + 12x

x^4 + 6x^3 + 8x^2

Answers

Answer:

h(x) = x - 3

g(x) = -2x2 + 4x

Find h (x) · g(x)

-3x^4 + 9x^3 - x + 3

-2x^3 + 10x^2 - 12x

2x^3 + 10x^2 + 12x

x^4 + 6x^3 + 8x^2

Need help with 6 ASAP

Answers

The answer to that question is d

Jonathan is solving this 3 variable system by hand.
What should be the entries for row 3 in step 3 (list them in order)? A) 0, -1, -2, 1 B) 0, 1, 3, 1 C) 0, 1, -2, 3 D) 3, 2, 1, 1

Answers

The entries for Row 3 in step 3 are : 0, -1, -2, 1

R_{1} = Row1

R_{2} = Row  2

R_{3} = Row  3

For the third step, STEP 3 :

THE VALUE OF Row 3 is obtained thus :

[tex]R_{3} = R_{3} - 3R_{1}[/tex]

[tex]From \: step \: 1 : R_{1} = [1 1 1 0][/tex]

[tex]R_{1} = [1 1 1 0] \\  \\

[tex]R_{3} = [3 2 1 1]  \\  

\\ 3R_{1} = 3(1 1 1 0) = [3 3 3 0][/tex]

[tex]R_{3} - 3R_{1} \:  =

(3 - 3), (2 - 3), (1 - 3), (1 - 0) = (0, -1, -2, 1)[/tex]

Hence, the entry for Row 3 in step 3 will be :

(0, - 1, - 2, 1)

Learn more on linear algebra : https://brainly.com/question/13284369

Find the principal (positive) square root of 15. If necessary, round the answer
to the nearest hundredth (two decimal places).

Answers

your answer will be 5 i think

ebjkesjkbjbsjkjkdbvbjbkjsz

Answers

Answer:

jhk

Step-by-step explanation:

Write an input and output pair that is a function and stays a function when you switch the input and output

Answers

9514 1404 393

Answer:

  {(1, 2), (3, 4)}

Step-by-step explanation:

If you want both the relation and its inverse to be functions, there can be no repeated x-values, and no repeated y-values.

In the above pair of points, I have avoided duplicates by making all of the values different. That is not necessary, but it satisfies this problem easily.

Find the equation (in terms of x) of the line through the points (-3,0) and (4,5)
Y=?​

Answers

Step-by-step explanation:

steps are in the picture above.

Note:if you need to ask any question please let me know.

Help!!! Solve for variable and show steps

Answers

Step-by-step explanation:

here,

[tex] \sqrt{x + 4} - 3 = 1[/tex]

[tex] \sqrt{x + 4} = 1 + 3[/tex]

[tex] \sqrt{x + 4} = 4[/tex]

[tex]x + 4 = (4) ^{2} [/tex]

[tex]x + 4 = 16[/tex]

x=16-4

x=12

A polynomial is
if its only factors over the integers are 1 and itself.

Answers

Answer: Prime

A polynomial is  prime    if its only factors over the integers are 1 and itself.

==============================================================

Explanation:

Think of the idea of factoring whole numbers like factoring 36 into 6*6 which further breaks down into (2*3)*(2*3) = 2^2*3^2. This shows that 36 is composite and not prime.

Something like 7 is prime because the only factors are 1 and itself.

This idea extends into polynomials as well.

Something like x^2+4x+4 factors to (x+2)(x+2) which shows it is not prime. On the other hand, the polynomial x^2+3x+5 is prime over the integers because we cannot factor it like the previous example. The only factors here are 1 and itself.

Factoring is handy to help determine roots of a polynomial. However, other tricks could be used such as the quadratic formula or using numerical approximation techniques.

Given the following functions:

f(x)=x^2

g(x)=x−3

Find the composition of the two functions and show your process:

f(g(x))

Answers

Answer:

[tex]x^2-6x+9[/tex]

Step-by-step explanation:

Say you have a function [tex]f(x)=x+1[/tex]. If you wanted to find f(3), you would replace the number in the parentheses, in this case 3, with x, to get [tex]f(3)=3+1=4.[/tex] When combining functions, you should do the same thing.

Here, we have [tex]f(x)=x^2.[/tex] We want to find f(g(x)). So, you should replace x in the function f(x) with the function g(x). [tex]g(x)=x-3.[/tex] So, f(g(x)) would equal [tex](x-3)^2[/tex], which equals [tex]x^2-6x+9[/tex].

Hope this helps!

Seleccione el valor de la incógnita en cada ecuación

5x+7=7

Respuesta 1
Elegir...
x+5=14

Respuesta 2
Elegir...
x-5=10

Respuesta 3
Elegir...
2x+1=15

Respuesta 4
Elegir...
3x-1=8

Respuesta 5
Elegir...
me pueden ayudar por favor y muchas gracias doy coronaa

Answers

Respuesta 1

Answer:

x+5=14

x=14-5

x=9

Respuesta 2

Answer:

x-5=10

x=10+5

x=15

Respuesta 3

Answer:

2x+1=15

2x=15-1

2x=14

2x/2=14/2

x=7

Respuesta 4

Answer:

3x-1=8

3x=8+1

3x=9

3x/3=9/3

x=9

I WILL MARK BRAINLIEST. PLEASE HELP. QUICK. Write an equation in slope-intercept form for the line with slope 15 and y-intercept −3. Then graph the line.
I WILL MARK BRAINLIEST

Answers

Slope-intercept form: y=mx+b

m = slope
b = y-intercept

y = 1/5 x -3
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