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Y_Kistochka [10]
3 years ago
12

a pile of coins, consisting of only dimes and quarters, is worth 4 dollars and 55 cents. there are 7 more dimes than quarters in

the pile. find the number of dimes and quarters in the pile.
Mathematics
1 answer:
djverab [1.8K]3 years ago
4 0

11 quarters

and 18 nickels

Hope this helps! :D

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What is the solution of the equation w^2=4/9? show work.
astra-53 [7]

Answer:

w = ± \frac{2}{3}

Step-by-step explanation:

w² = \frac{4}{9} ( take square root of both sides )

w = ± \sqrt{\frac{4}{9} } = ± \frac{\sqrt{4} }{\sqrt{9} } = ± \frac{2}{3}

Then

w = - \frac{2}{3} or w = \frac{2}{3}

3 0
3 years ago
Pls help will give brainliest and 5 star
jeka94

Answer:

The answers are as follows:

5. c

6. b

7. not sure, sorry

8. b

Step-by-step explanation:


8 0
3 years ago
What is the area? <br> Possible Answers: 24m^2, 30m^2, 20m^2, 120m^2
attashe74 [19]

Answer:

24m^2, I think.

Step-by-step explanation:

Well the area is Base times Height, so 6 times 4, the squared is just showing that its the area.

8 0
3 years ago
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Find the area of a triangle whose vertices are located at (-2,5), (-4, -3), and (3,1). Evaluate the determinant using diagonals.
myrzilka [38]

Answer:

The area of the triangle is 48 unit²

Step-by-step explanation:

The given vertices of the triangle are;

(-2, 5), (-4, -3), and (3, 1)

The formula for finding the area of a triangle with given coordinates of the vertices is as follows;

\Delta  = \dfrac{1}{2}\times \begin{vmatrix}x_1 & y_1 & 1\\ x_2 & y_2 & 1\\ x_3 & y_3 & 1\end{vmatrix} = \dfrac{1}{2}\times \left | x_1\cdot y_2 - x_2\cdot y_1 + x_2\cdot y_3 - x_3\cdot y_2 + x_3\cdot y_1 - x_1\cdot y_3\right |

Substituting gives;

\Delta  = \dfrac{1}{2}\times \begin{vmatrix}-2& 5 & 1\\ -4 & -3 & 1\\ 3 & 1 & 1\end{vmatrix} \\\Delta  = \dfrac{1}{2}\times \left | (-2)\times (-3) - ((-4)\times 5) + (-4)\times 1 - 3\times (-3) + 3 \times 5 - (-2)\times 1\right | \\\Delta  = \dfrac{1}{2}\times \left | 6 +20 -4 +9 + 15+2\right |  = 48

The area of the triangle = 48 unit².

5 0
3 years ago
Plz help plzzzzzzzzz
chubhunter [2.5K]

Answer:

47.13cm

Step-by-step explanation:

2×3.142×7.5cm

6 0
4 years ago
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