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3 years ago

"Nine less than a number" can be written as 9 - x. true or false

Mathematics

1 answer:

Alchen [17]3 years ago

7 0

Answer:

False because it's asking for 9 less than a number

Number minus 9

x-9 would make it true

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3x - 5y = 10 6x + 3y = -6 Marybeth is going to solve this problem by multiplying the top equation by -2. If she does this and co

swat32

On multiplying with -2 in the equation $3 x-5 y=10$ given in the question we get as 13y = -26

Answer: Option(d)

<u>Step by Step Explanation: </u>

Solution;

The given two set of equations such as

$3 x-5 y=10$ (Equation 1)

$6 x+3 y=-6$ (Equation 2)

Also given, Marybeth multiplies the first equation by -2

After multiplying with -2 in first equation we get

$-2 \times[3 x-5 y]=-2 \times[10]$

$-6 x+10 y=-20$

Adding the newly obtained equation 1 and Equation 2,

$[-6 x+10 y=-20]+[6 x+3 y=-6]$

Adding the like terms x, y and constants we get

$6 x+3 y+(-6 x)+10 y=-6+(-20)$

$0 x+13 y=-6+(-20)$

13y=-26

Result:

Thus on multiplying and simplifying the above two equations gives answer as 13y = -26

6 0

3 years ago

12 of a number b increased by 7

Lilit [14]

Answer:

12b+7

Step-by-step explanation:

there's 12 of b and it increases by 7

7 0

3 years ago

Find all zeros of f(x)=x^3−17x^2+49x−833

soldi70 [24.7K]

Answer:

x = 17 or x = ±7i

Step-by-step explanation:

x³ − 17x² + 49x − 833 = 0

x² (x − 17) + 49 (x − 17) = 0

(x² + 49) (x − 17) = 0

x = 17 or ±7i

8 0

3 years ago

Pam and Jem shared a candy bar. Pam ate three twelfths. Jem ate four

GaryK [48]

Five twelfths are left of the candy bar

5 0

3 years ago

What is the vertex of a parabola represented by the equation f(x) = -2 (x-4)^2 - 7

zmey [24]

Answer:

f ( x ) = x ^2 + 1

f ( x ) = 7 x^ 2 + 5 x − 4

f ( x ) = 4 ( x − 3 ) ^2

Step-by-step explanation:

7 0

3 years ago