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3 years ago

(3t^2+1)-t^2. How do you do this equation and what’s the answer. Algebra 1.

Mathematics

1 answer:

Oksana_A [137]3 years ago

3 0

2t^2+1

Subtract t^2 from 3t^2 you get 2t^2

which is 2t^2+1 answer

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A jar is filled with only dimes and quarters. The jar contains a total of 60 coins and the value of the jar is $11.25. How many

inessss [21]

Answer:

35 quarters

Step-by-step explanation:

This situation has two unknowns - the total number of dimes and the total number of quarters. Because we have two unknowns, we will write a system of equations with two equations using the two unknowns.

$d+q=60$ is an equation representing the total number of coins
$0.10d+0.25q=11.25$ is an equation representing the total value in money based on the number of coin. 0.10 and 0.25 come from the value of a dime and quarter individually.

We write the first equation in terms of q by subtracting it across the equal sign to get $d=60-q$ . We now substitute this for d in the second equation.

$0.10(60-q)+0.25q=11.25\\6-0.10q+0.25q=11.25\\6+0.15q=11.25$

After simplifying, we subtract 6 across and divide by the coefficient of q.

$6+0.15q=11.25\\0.15q=5.25\\q=35$

We now know of the 60 coins that 35 are quarters. To find the total value of the quarters, we multiply 35 by 0.25 and find 8.75.

3 0

3 years ago

the length(1) of the rectangle is x2 + 2x-3 and the width(w) is 5x + 4,what is the perimeter of the rectangle?

astra-53 [7]

Answer:

4×_3 I think this is your answer

6 0

3 years ago

Hi i need help on this

Allushta [10]

Answer
X=125
Solution
25x 4/25>25x5

3 0

3 years ago

Read 2 more answers

Solve the equation below for x and check your solution.<br><br>4x+3=x

Afina-wow [57]

Answer:

x= -1

Step-by-step explanation:

4x+3=x

we subtract x to both sides of the equation:

4x -x +3 = x-x

we have:

3x +3 = 0

we subtract 3 to both sides of the equation:

3x +3 -3 = -3

3x = -3

we divide by 3 both sides of the equation

3x/3 = -3/3

x= -1

we test the result in the original equation:

4x+3=x

4*(-1) + 3 = -1

-4 +3 = -1

-1 = -1

so finally x= -1

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3 years ago

I am a figure with faces that are polygons

mr_godi [17]

Figures with faces that are polygons are called "Polyhedrons"

5 0

4 years ago