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AlekseyPX
4 years ago
14

Choose all the expression with accurately written descriptions

Mathematics
1 answer:
Kruka [31]4 years ago
3 0

Answer:

All except 4th and last.

Step-by-step explanation:

The one that says equation is definitely wrong because it doesn't have an equal sign anywhere (there is nothing to solve there).

The one that says 5 plus x^2 that means 5+x^2 instead of 5x^2.

They should have said 5 times x^2 there which actually means 5x^2.

So I don't like the way some of these are written but the only two that are really wrong are the 4th one and the last one.

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Find the x-intercepts for the parabola defined by the equation below. y = x2 + 9x + 14
faltersainse [42]

Answer:

x - intercepts are (-7,0) and (-2,0)

A is the correct option.

Step-by-step explanation:

We have been given the equation of the parabola y=x^2+9x+14

For x- intercept, y = 0

0=x^2+9x+14

We can split the middle term as 9x = 7x +2x

x^2+7x+2x+14=0

Now take GCF

x(x+7)+2(x+7)=0

Factored out the common term

(x+7)(x+2)=0

Apply the zero product property

(x+7)=0,(x+2)=0

Solve for x

x=-7,-2

Hence, x - intercepts are (-7,0) and (-2,0)

A is the correct option.

4 0
4 years ago
If f(x) = -x + 5 and g(x) = x^2, what is (g*f)(-1)
sasho [114]

Answer:

6

Step-by-step explanation:

(g × f)(x) = g(x) × f(x) = x²(- x + 5)

To evaluate (g × f)(- 1) substitute x = - 1 into the product

x²(- x + 5)

= (- 1)²(- (- 1) + 5)

= 1(1 + 5)

= 1 × 6 = 6

5 0
4 years ago
If –18 < –8, which of the following must be true?
VMariaS [17]

Answer:

b

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
(6x - 4) + (-4x + 8)
ivanzaharov [21]

6x−4−4x+8 = 6x+−4+−4x+8 and then combine like terms =6x+−4+−4x+8

=(6x+−4x)+(−4+8)

Answer: 2x+4

3 0
4 years ago
Read 2 more answers
3 frames get made in 25 minutes. How many whole frames get made in 38 minutes
DIA [1.3K]

Answer:

4

Step-by-step explanation:

set it up as a fraction, 3/25, x/38. cross multiply, 3*38 then divide by 25 which is 4.56

6 0
3 years ago
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