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boyakko [2]
3 years ago
14

Please help please help please help please help please help first to asnwer gets brainleyist

Mathematics
1 answer:
Licemer1 [7]3 years ago
6 0
The answer is B. 60 because length Time width 5x12
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Please help with this question!!!!!! I am very Confused and please explain!!!
Brut [27]
The sub dives 37 feet....thats -37...it rises 16 ft....-37 + 16 = -21...then dives 18 ft.....-21 - 18 = - 39 ft

so the net change is -39 ft
8 0
2 years ago
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A plus 5 is the side of an equilateral triangle. find it's perimeter
Bezzdna [24]
A+5 = 1 side, so the perimeter is 3(a+5) or P = 3a+15
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(4m² - 4m²)+(-3m² -2m2 + 4 m?)
ICE Princess25 [194]

Answer:

-5m^{2} +4m

Step-by-step explanation:

7 0
2 years ago
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A collection of nickels and dimes is worth $9.45. If the number of dimes is doubled, the value is
eduard

Answer:

The number of nickels is 45 and the number of dimes is 72.

Step-by-step explanation:

Let

x ----> number of nickels

y ----> number of dimes

Remember that

1\ nickel=\$0.05

1\ dime=\$0.10

so

0.05x+0.10y=9.45 ------> equation A

0.05x+0.10(2y)=16.65

0.05x+0.20y=16.65 ------> equation B

<em>Solve the system by substitution</em>

we have

0.05x+0.10y=9.45 ------> equation A

0.05x+0.20y=16.65 ------> equation B

Multiply both equations by 100 both sides

5x+10y=945 ---->5x=945-10y --> equation C

5x+20y=1,665 ----> equation D

substitute equation C in equation D

(945-10y)+20y=1,665

solve for y

945+10y=1,665

10y=1,665-945

10y=720

y=72\ dimes

Find the value of x

5x=945-10y

5x=945-10(72)

5x=225

x=45\ nickels

<em>Alternative Method</em>

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

the solution is the point (45,72)

therefore

The number of nickels is 45 and the number of dimes is 72.

7 0
3 years ago
What's the correct answer and why?
alexandr402 [8]
3x^4 becomes 3(3x)^4=3*3^4*x^4
y^2 becomes (3y)^2=3^2y²
the new z=3² the old z, so b is correct.
4 0
2 years ago
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