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Karo-lina-s [1.5K]

3 years ago

14

Pennies are packaged 50 in a roll. A mother gave her son 161 pennies for his bank and she had 39 pennies left over. How many rol

ls of pennies did she use? 6 rolls 5 rolls 7 rolls 4 rolls

2 answers:

Kisachek [45]3 years ago

7 0

She used 4 rolls or pennies.

yulyashka [42]3 years ago

5 0

4 rolls is the answer

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5,3,-7,-8,-2 order from greatest to least

Burka [1]

Answer

-8, -7, -2, 3, 5

Explanation

Positive numbers go up as they increase.

Negative numbers go up as they decrease.

3 0

2 years ago

Determine the number of triangles that can be formed given the following information: a = 8, b = 10, m

Fiesta28 [93]

Answer:

5

Step-by-step explanation:

5 0

3 years ago

I need help i don’t understand this

lys-0071 [83]

Answer:
Angle BAC: 56
ANGLE BCA: 42

Why? First find angle BCA because that angle is on a straight line with another angle on the other side you can do
180-138=42 which is the measurement of angle BCA.

For angle BAC you have to know that the sun of all triangles interior angles is 180 so you do
180-82-42=56
So angle BAC is 56

Hope this helps :D

6 0

3 years ago

Read 2 more answers

PLS HELP! GIVING BRAINLIST!

svlad2 [7]

Answer:

We conclude that (4, 2) is NOT a solution to the system of equations.

Step-by-step explanation:

Given the system of equations

$y = x - 2$

$y = 3x + 4$

Important Tip:

In order to determine whether (4, 2) is a solution to the system of equations or not, we need to solve the system of equations.

Let us solve the system of equations using the elimination method.

$\begin{bmatrix}y=x-2\\ y=3x+4\end{bmatrix}$

Arrange equation variables for elimination

$\begin{bmatrix}y-x=-2\\ y-3x=4\end{bmatrix}$

Subtract the equations

$y-3x=4$

$-$

$\underline{y-x=-2}$

$-2x=6$

Now, solve -2x = 6 for x

$-2x=6$

Divide both sides by -2

$\frac{-2x}{-2}=\frac{6}{-2}$

Simplify

$x=-3$

For y - x = -2 plug in x = -3

$y-\left(-3\right)=-2$

$y+3=-2$

Subtract 3 from both sides

$y+3-3=-2-3$

Simplify

$y=-5$

The solution to the system of equations is:

(x, y) = (-3, -5)

Checking the graph

From the graph, it is also clear that (4, 2) is NOT a solution to the system of equations because (-3, -5) is the only solution as we have found earlier.

Therefore, we conclude that (4, 2) is NOT a solution to the system of equations.

8 0

3 years ago

At the beginning of an experiment, there are 400 grams of contaminants. Each hour, three-fourths of the contaminants are filtere

WITCHER [35]

<span>a(n) = 0.75*a(n-1)
</span><span>Ans: 400 ; (3/4)400 = 300 ; (3/4)300 = 900/4 ; (3/4)900/4 = 2700/16 = 168.75g's</span>

7 0

3 years ago