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3 years ago

Simplify the expression and choose the best choice

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

3 0

Answer:

Step-by-step explanation:

$\sqrt{3^{15} }$

$\sqrt{3*3*3*3*3*3*3*3*3*3*3*3*3*3*3}$

$\sqrt{3^{14} * 3}$

$\sqrt{((3^7)^2)*3}$

$3^{7}$ $\sqrt{3}$

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2(10 – 24x) + y2 What is X equals What is Y equals What is the answer

kakasveta [241]

Answer:

X= 5/12 + 1/24y

Y= -10 + 29x

Step-by-step explanation:

2(10- 24x)+ 2y 2(10- 24x)+ 2y

20 - 48x +2y 20 - 48x +2y

48x =20 +2y -2y = 20- 48x

/48 /48 /48 /-2 /-2 /-2

x= 5/12 + 1/24y y= -10 +29x

8 0

3 years ago

Which equation is y = –3x2 – 12x – 2 rewritten in vertex form?

Andrej [43]

The general equation of a quadratic is expressed as y = ax^2+bx+c. To convert the general equation to vertex form, we need to obtain this form:

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

This could be done by using completing the square method.

y = –3x^2 – 12x – 2
y + 2 = –3(x^2 + 4x)
y + 2 -12 = –3(x^2 + 4x + 4)
y - 10 = -3(x+2)^2

Therefore, the answer is the first option.

3 0

4 years ago

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Can someone help me

mr Goodwill [35]

X=4
cross multiply
3x=12
x=4

7 0

3 years ago

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8 × 10 + 6 − 2 7 + 5 × 8 − 4

riadik2000 [5.3K]

Answer:

Step-by-step explanation:

(8)(10)+6−27+(5)(8)−4

=80+6−27+(5)(8)−4

=86−27+(5)(8)−4

=59+(5)(8)−4

=59+40−4

=99−4

=95

hope this helped :)

6 0

3 years ago

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Please help I am horrible at math! Ye is riding home from a friend's house. After 5 minutes he is 4 miles from home, after 15 mi

vesna_86 [32]

Answer:

y=-0.2x+5. Correct choice: A)

Step-by-step explanation:

Modeling With Equations

Let's call x the number of minutes and y the distance from home. The correct model should meet both conditions:

After 5 minutes, Ye is 4 miles from home. This is the ordered pair (5,4)

After 15 minutes, Ye is 2 miles from home. This is the ordered pair (15,2)

A) y=-0.2x+5. Testing the first point (5,4): y=-0.2*5+5=4. Correct

Testing the second point (15,2): y=-0.2*15+5=2. Correct

This is the correct choice.

B) y=11/7x-27/7. Testing the first point: (5,4) y=11/7*5-27/7=4. Correct

Testing the second point (15,2). y=11/7*15-27/7=138/7. Incorrect

Incorrect choice.

C) This equation is equal to the choice B), thus this one is incorrect.

D) y=5x-0.2. The first point (5,4) yields to:

4=5*5-0.2=24.8 Incorrect.

6 0

3 years ago

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