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Gnom [1K]
3 years ago
6

Write an expression that has a value of 18 using at least 3 different operations.

Mathematics
1 answer:
Kitty [74]3 years ago
8 0

Answer:

The expression  (2 x 3) + 13  - 1   on simplifying gives 18.

Step-by-step explanation:

Here, the outcome of the expression is 18.

Using at least three operations.

Here, we use three operations Addition = '+' , Subtraction =  '-' and

Multiplication  = 'X'

Take the number 2 and multiply it with other number 3.

We get 2 x 3  = 6

Take the product, add it with another number  13

So, 6+ 13=  19

Take the resultant and subtract 1 from it.

We get 19 - 1 = 18

⇒The combined expression is (2 x 3) + 13  - 1  = 18

The above expression on simplifying gives 18.

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if the value of c is negative, you would need zero pairs to model the factorization of the polynomial. the x-tiles on the board
Yuliya22 [10]

Answer:

value of c is negative

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Step-by-step explanation:

6 0
2 years ago
Write the quadratic equation whose roots are 1 and -5, and whose leading coefficient is 3.
Anna35 [415]

Step-by-step explanation:

they're is a neat little trick.

but first of all, "roots" means the 0 solutions of the equation. like

ax² + bx + c = 0

there are 2 solutions for x to make the whole expression equal 0.

these are the "roots".

now to the little trick :

when is a multiplication resulting in 0 ?

when at least one of the factors is 0.

and any quadratic expression can be written as multiplication of 2 factors. like

c(x - a)(x - b) = cx² - cax - cbx + cab

what are the "roots" or 0 points ?

either

c = 0

x - a = 0 | x = a

x - b = 0 | x = b

the leading coefficient = 3.

that means nothing else than c = 3.

root = 1 means (x - 1) is one factor.

root = -5 means (x + 5) is the other factor.

so, we have

3(x - 1)(x + 5) = 3x² + 12x - 15

and the equation is

3x² + 12x - 15 = 0

or

3x² + 12x = 15

7 0
2 years ago
PLEASE HELP ASAP 30 POINTS ):
ladessa [460]

Answer:

c (0,-4)

Step-by-step explanation:

-5x+y = -4

4x - 4y =16

Solve the first equation for y since we are using substitution.

-5x+y = -4

Add 5x to each side

-5x+5x+y = -4+5x

y = 5x-4

Substitute this equation y = 5x-4 into the second equation.

4x -4(5x-4) = 16

Distribute the -4

4x - 4(5x) -4(-4) = 16

4x-20x +16 = 16

Combine like terms

-16x +16 =16

Subtract 16 from each side

-16x+16-16 = 16-16

-16x =0

Divide by -16

x=0


But we still need to find y

y = 5x-4

y = 5(0) -4

y = -4

5 0
4 years ago
Determine the measure of angle j: angle k: & angle: l
Vikki [24]

Answer:

17=J

L= 180-17

 = 163

K=163

L=163

J=17

Step-by-step explanation:

3 0
3 years ago
Nick and Monica are paid $41.25 for their work. Nick worked 2.5 hours, and Monica worked 3 hours. They split the money according
vlada-n [284]

Answer:

BRIANLIEST PLZ

N = 18.75

M = 22.5

Step-by-step explanation:

Need the ratio of money paid to each. We know how the ratio of time is divided so we can use this ratio to find the amount paid.

T = t1 + t2 = 2.5 + 3 = 5.5

r1 =2.5/5.5

r2 = 3/5.5

Nick = r1 * 41.25 = 18.75

Monica = r2 * 41.25 = 22.5

7 0
3 years ago
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