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ELEN [110]
3 years ago
15

How do i simplify this

Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0

Answer:

60a - 72ab

Step-by-step explanation:

B and C do not work because there is no "c" in the expression

-3(-4a[0-6b+5])

-3(-4a[5-6b])

-3(-20a+24ab)

60a - 72ab

None of the given choices are correct.

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What ate all of the x-intercepts of the continuous function in the table?
Elodia [21]

Answer: (-4,0) and (4,0)

Step-by-step explanation:

Just look where the zeros are in the y (fx) column that corespont the the x.

7 0
3 years ago
There are 120 Calories in a 3/4
Lina20 [59]

Answer:

in three forths of what?

6 0
3 years ago
A light aircraft travels 5 miles per hour less than twice the speed of a bus. If the bus can travel 114 miles in the same time i
Rufina [12.5K]
A represents the speed of the aircraft.
b represents the speed of the bus.

a=2b-5
114/b=218/a

Substitution method

114/b=218/(2b-5)

(2b-5)*(114/b)= 218

(228b-570)/b = 218

228b-570= 218b

228b-218b=570

10b= 570

b=57

Plug the value of b into one of the original equations.

a=2(57)-5
a=114-5
a=109

Final answer:
Average speed of plane= 109
Average speed of bus= 57
3 0
3 years ago
Answer QUICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Vaselesa [24]

Answer:

half of a number is 15

Step-by-step explanation:

An equation must contain an equality sign.

The third option is the only phrase that can be represented as an equation: \frac{x}{2}=15

8 0
3 years ago
What is the vertex of the function f (x) = x2 - 10x?<br>(5,-25)<br>(5.-75)<br>(-5,75)<br>(-5,25)​
JulsSmile [24]

Option A

The vertex is (h, k) = (5, -25)

<em><u>Solution:</u></em>

<em><u>Given function is:</u></em>

f(x) = x^2-10x

<em><u>The vertex form is given as:</u></em>

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

<h3>where (h, k) is the vertex</h3>

Rewrite the equation in vertex form

f(x) = x^2-10x

Complete the square for  x^2-10x

Use the form ax^2+bx+c to find the values of  a, b, c

a = 1 , b = -10, c = 0

Consider the vertex form of a parabola

a(x+d)^2+e

Substitute the values of a and b into the following formula to find "d" :

d = \frac{b}{2a}\\\\d = \frac{-10}{2 \times 1}\\\\d = -5

Find the value of "e" using the formula,

e = c - \frac{b^2}{4a}\\\\e = 0 - \frac{(-10)^2}{4 \times 1}\\\\e = -25

Substitute the value of a, d, e into vertex form

a(x+d)^2+e\\\\1(x-5)^2-25\\\\(x-5)^2-25

Set y equal to above equation

y = (x-5)^2-25

Compare the above equation with vertex form

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

y = (x-5)^2-25

We find, h = 5 and k = -25

Thus the vertex is (h, k) = (5, -25)

7 0
4 years ago
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