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BabaBlast [244]
3 years ago
9

Solve -5(3n + 4) = 40. -4 -3 3 4

Mathematics
2 answers:
Nuetrik [128]3 years ago
8 0
Our current equation is:
-5(3n + 4) = 40

To solve for this, we need to use the Distributive Property. The Distributive Property allows any number/variable outside of the parenthesis to be multiplied by all numbers/variables inside of the parenthesis.

For example, 3(2 + 3) would be:
3(2) + 3(3)
6 + 9
15.

Now that we've defined our terms and provided an example, I think we're ready to solve.

-5(3n + 4) = 40
-5(3n) + -5(4) (multiplying a positive by a negative makes a negative)
-15n -20 = 40
Add 20 to both sides to get -15n by itself.
-20 + 20 = 0
40 + 20 = 60

We now have:
-15n = 60

Divide both sides by -15 to solve for n.
-15n / -15 = n
60 / -15 = -4

N = -4.

Your answer is A.) -4.

I hope this helps!
UkoKoshka [18]3 years ago
7 0
-5(3n + 4) = 40

Simplify.

-15n - 20 = 40

Add 20 to both sides.

-15n = 40 + 20

Simplify.

-15n = 60

Divide both sides by -15.

n = 60 / -15

Simplify.

n = -4

Check our work by simply plugging -4 in for n in the given equation.

-5(3n + 4) = 40

-5(3(-4) + 4) = 40

Simplify.

-5(-12 + 4) = 40

Simplify.

-5(-8) = 40

40 = 40

So, n = -4

~Hope I helped!~
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timofeeve [1]

Answer:

Parallelogram

Explanation:

Since there are four points, this is a quadrilateral.

There is a slope during the points. Therefore it could not be a rectangle nor square. The sides are still parallel though.

The length is not equal too, so it could not be a rhombus.

If you plot these points to the graph and connect them, it would form a parallelogram.

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Answer:

tan A = <u>opp</u>

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tan G = <u>EF</u>

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2 years ago
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Mr. Woo wants to ship a fishing rod that is 42 inches long to his son. He has a box with the dimensions shown.
brilliants [131]

Answer:

A. s^2=1,700

B. 42.4 inches. It will fit.

Step-by-step explanation:

A.

Let s =  the length of the diagonal across the bottom of the box.

w^2+l^2\\\\10^2+40^2 = s^2\\\\100+1,600 = s^2\\\\1,700 =s^2\\\\

Therefore, s^2=1,700

B.

Let r = the length from a bottom corner to the opposite top corner.

h^2+s^2\\\\10^2+1,700=r^2\\\\100+1,700=r^2\\\\1,800=r^2 \\\\42.4=r

Therefore, the length of the longest tube that will fit in the box is 42.4 inches.

Since the fishing rod is only 42 inches long, which is less than 42.4 inches, by only 0.2 inches, it means it will still fit.

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3 years ago
Can someone help me plseawe
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18 meters by 14 meters

Step-by-step explanation:

18 meters by 14 meters

Area of rectangle is base times height (AKA length times width or however you wish to call the dimensions).

This question is a system of equations question. We can make two equations. We know that every rectangle must have 2 "lengths" and 2 "widths" (4 sides in a rectangle). Since Maria only has 64 meters of fencing, we get the equation:

2L+2W = 64

Now we know the area enclosed must be 252 so we have:

L* W = 252

Rewriting the second equation we get:

Plug this into first equation to get:

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Solving the quadratic tells us L can be 18 or 14. Let's consider if L is 18 first by plugging 18 back into the second equation to get 18 * W = 252 which gives us W = 14. If we do the same for when L = 14, we get that W = 18.

Now you might wonder why we have 2 possible combinations, that's because in reality, it doesn't matter which one we label as length (L) or width (W).

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What does -4=2p+10 equal ?
Tanya [424]
I’m pretty sure this is a 2 step equation so the answer would be 3=p

STEPS- -4=2p+10
1) subtract 10 from both sides
2) divide 2 from positive 6 because that’s what you should’ve got from two negatives
3) then 3 is equal to p
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4 years ago
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