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2 years ago

Simplify the expression 8 + (7 + x)

Mathematics

1 answer:

baherus [9]2 years ago

6 0

Answer:

15 + x

Step-by-step explanation:

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Can someone help me with this

SOVA2 [1]

X is how much it costs for one hour, so when you multiply it by 3 1/2, you get the amount of money charged for 3 and a half hours.

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4 years ago

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A female executive selecting her wardrobe purchased three blazers, two blouses, and five skirts in coordinating colors. how many

Ainat [17]

She can make a total of 30 different outfits, just multiply them all together.

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3 years ago

The vertex of this parabola is at (-2,-3). When the y-value is -2, the x-value is -5. What is the coefficient of the squared ter

ra1l [238]

Answer:

The coefficient of the squared term of the equation is 1/9.

Step-by-step explanation:

We are given that the vertex of the parabola is at (-2, -3). We also know that when the y-value is -2, the x-value is -5. Using this information we want to find the cofficient of the squared term in the parabola's equation.

Since we are given the vertex, we can use the vertex form:

$\displaystyle y=a(x-h)^2+k$

Where a is the leading coefficient and (h, k) is the vertex.

Since the vertex is (-2, -3), h = -2 and k = -3:

$\displaystyle y=a(x-(-2))^2+(-3)$

Simplify:

$y=a(x+2)^2-3$

We are also given that y = -2 when x = -5. Substitute:

$(-2)=a(-5+2)^2-3$

Solve for a. Simplify:

$\displaystyle \begin{aligned} -2&=a(-3)^2-3\\ 1&=9a \\a&=\frac{1}{9}\end{aligned}$

Therefore, our full vertex equation is:

$\displaystyle y=\frac{1}{9}(x+2)^2-3$

We can expand:

$\displaystyle y=\frac{1}{9}(x^2+4x+4)-3$

Simplify:

$\displaystyle y=\frac{1}{9}x^2+\frac{4}{9}x-\frac{23}{9}$

The coefficient of the squared term of the equation is 1/9.

3 0

4 years ago

Is B.) 8 the right answer to 2(4x - 6) = 6x - 4?

gizmo_the_mogwai [7]

hello

8 the no right answer to 2(4x - 6) = 6x - 4

because : 2(4(8)-6) = 6(8)-4

2(26) = 48-4

52 =44

4 0

3 years ago

For each value of y , determine whether it is a solution to 3y<24.

Lina20 [59]

Answer:

1) No

2) Yes

3)No

4)Yes

Step-by-step explanation:

1) 3(8) is simplified to 24

But 24 < 24 is not a true statement because they are both equal.

2) 3(5) is simplified to 15

15 < 40 is a true statement because 15 is less than 24

3) 3(11) simplifies to 33

33 < 24 is not a true statement because 33 is more than 24

4) 3(6) simplifies to 18

18 < 24 is a true statement because 18 is less than 24

Hope this helped.

8 0

3 years ago