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3 years ago

What is the missing number in the expression 3(q+7)=27

Mathematics

1 answer:

Murljashka [212]3 years ago

3 0

Answer:

Step-by-step explanation:7+2 is 9 and 9x3 is 27

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Can someone please help me with my homework and explain it to me I will mark as brainlyist

Keith_Richards [23]

Answer:

121.76

Step-by-step explanation:

the original price is 83.97. you would have to find 45% of that. you would do this by putting x/83.97= 45/100

multiply 45 and 83.97 to get 3778.65. then divide that by 100 to get 37.7865. Add that to 83.97 to get 121.7565. round it to the nearest hundreth to get the total of 121.76 dollars

mark as brainlyest and answer my question

8 0

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 term i

WITCHER [35]

Y=a (x-h) ^ + k
so your parabola has an equation of:
y=a(x+2)^ -3

-2=a(5+2) ^ -3
-2=a(-3)^-3
-2=9a-3

adding them to both sides
1=9a

divide both sides:
1=9a

Divide both sides by 9:
a=1/9

the vertex form is:
y=(1/9)(x+2)^-3

The expanded form is:
y=(1/9)x^ + (4/9)x - (23/9)

Anw: E. (1/9)

3 0

4 years ago

Read 2 more answers

True or false: two points with the same x-coordinate are always on the same vertical line

Vesna [10]

True, you can even test it out yourself. If the domain (x) is the same then it will be a vertical line. Like if you graphed (1,2) (1,4), (1,6) it will be a vertical line on your graph. I hope this helps!

3 0

4 years ago

Simplify the expression 6 + (4h + 3).

Levart [38]

Let's simplify step-by-step.

6+4h+3

Combine Like Terms:

=6+4h+3

=(4h)+(6+3)

=4h+9

Answer:

=4h+9

7 0

3 years ago

This graph represents a quadratic function. What is the function’s equation written in factored form and in vertex form?

creativ13 [48]

Answer:

Part a) The function’s equation written in vertex form is

$f(x)=2(x-2)^2-8$

Part b) The function’s equation written in factored form is equal to

$f(x)=2x(x-4)$

Step-by-step explanation:

Part a) What is the function’s equation written in vertex form?

we know that

The equation of a vertical parabola written in vertex form is equal to

$f(x)=a(x-h)^2+k$

where

a is a coefficient

(h,k) is the vertex

Looking at the graph

The vertex is the point (2,-8)

substitute

$f(x)=a(x-2)^2-8$

Find the value of the coefficient a

take one point from the graph

(0,0)

substitute in the equation

$0=a(0-2)^2-8\\0=4a-8\\4a=8\\a=2$

therefore

The function’s equation written in vertex form is

$f(x)=2(x-2)^2-8$

Part b) What is the function’s equation written in factored form?

we know that

The equation of a vertical parabola written in factored form is equal to

$f(x)=a(x-x_1)(x-x_2)$

where

a is a coefficient

x_1 and x_2 are the zeros or x-intercepts of the function

Remember that the x-intercept is the value of x when the value of the function is equal to zero

Looking at the graph

The zeros or x-intercepts of the function are

x=0 and x=4

$f(x)=a(x-0)(x-4)$

$f(x)=ax(x-4)$

Find the value of the coefficient a

take one point from the graph

(2,-8)

substitute

$-8=a(2)(2-4)\\-8=-4a\\a=2$

therefore

The function’s equation written in factored form is equal to

$f(x)=2x(x-4)$

4 0

4 years ago