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2 years ago

Helllppppppp I can’t figure this out

Mathematics

1 answer:

Burka [1]2 years ago

4 0

Answer:

Step-by-step explanation:

2x^2 + 9x + 4=0

2x^2+8x+x+4=0

2x(x+4) +1 (x+4) =0

2x+1 = 0

x+ 4 =0

2x= -1

x= -1/2

x=-4

Therefore x = -4 and x = -1/2

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Illmark brainlist plss help

Aloiza [94]

Answer:

Step-by-step explanation:

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8 0

3 years ago

Solve for d<br> 20(d − 4) + 4d ≤ 8

tatiyna

Answer:

d≤11/3

Step-by-step explanation:

hope this is helpful!!

4 0

3 years ago

Read 2 more answers

Simplify.<br> Rewrite the expression in the form b^n<br><br> (b^3)^2

Alexxandr [17]

Step-by-step explanation:

$a^n={\underbrace{a\cdot a\cdot a\cdot...\cdot a}_{n}$

<h2>METHOD 1.</h2>

$\left(b^3\right)^2=\underbrace{b^3\cdot b^3}_{2}=\underbrace{b\cdot b\cdot b}_{3}\cdot\underbrace{b\cdot b\cdot b}_{3}=\underbrace{b\cdot b\cdot b\cdot b\cdot b\cdot b}_{6}=b^6$

<h2>METHOD 2.</h2>

$\left(b^3\right)^2=\underbrace{b^3\cdot b^3}_{2}=b^{3+3}=b^6\qquad\text{used}\ a^n\cdot a^m=a^{n+m}$

<h2>METHOD 3.</h2>

$\left(b^3\right)^2=\left(\underbrace{b\cdot b\cdot b}_{3}\right)^2=b^2\cdot b^2\cdot b^2=b^{2+2+2}=b^6\\\text{used}\ (ab)^n=a^nb^n,\ a^n\cdot a^m=a^{n+m}$

<h2>METHOD 4.</h2>

$\left(b^3\right)^2=b^{3\cdot2}=b^6\qquad\text{used}\ \left(a^n\right)^m=a^{nm}$

5 0

3 years ago

Subtract -3x-4 from 7x^2-7x

professor190 [17]

Answer:

−49x8−3x−4

Step-by-step explanation:

−3x−4−49x7x

=−3x+−4+−49x8

hope this helps

4 0

4 years ago

Wyatt is hiking a trail that is 11/12 miles long. After hiking 1/4 mile, he stops for water. How much farther must he hike to fi

ankoles [38]

Answer:

He had hiked 3/12 of a mile so the answer is 8/12 of a mile

Step-by-step explanation:

You need to make 1/4 into twelves by multiplying both sides by 3 to get 3/12.

You take that and subtract it from the total distance. 11/12 - 3/12 = 8/12

6 0

3 years ago