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2 years ago

8. The equation at the right has been incorrectly solved.

Mathematics

2 answers:

ozzi2 years ago

8 0

The equation at the right has been incorrectly solved, the answer to this is b = -7

Lilit [14]2 years ago

6 0

When subracting the negative 24 from the left and right side, the left will cancel and the right will equal -28 instead of positive.

The final answer would just be positive 7 instead of negative.

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David was in need for some money so he decided to clean out the water fountain at the mall he found 20 nickels and quarters. The

Shkiper50 [21]

Answer:

David find 8 quarters.

Step-by-step explanation:

Given:

David was in need for some money so he decided to clean out the water fountain at the mall he found 20 nickels and quarters.

The collection of nickels and quarters totaled to 2.6.

Now, to find the quarters David find.

Let the number of nickels be $x$

And the number of quarters be $y$

Thus, the number of nickels and quarters he found:

$x+y=20.$

⇒ $x=20-y$ .........( 1 )

The totaled of nickels and quarters:

$0.05x+0.25y=2.6$

(As 1 nickel=$0.05 and 1 quarter=$0.25)

Now, putting the equation ( 1 ) in the place of $x$ we get:

$0.05(20-y)+0.25y=2.6$

⇒ $1-0.05y+0.25y=2.6$

⇒ $1+0.20y=2.6$

Subtracting both sides by 1 we get:

⇒ $0.20y=1.6$

Dividing both sides by 0.20 we get:

⇒ $y = 8.$

So, the quarters = 8.

Therefore, David find 8 quarters.

3 0

3 years ago

Your $440 gets 5.8% compounded annually for 8 years. What will your $440.00 be worth in 8 years?

MArishka [77]

Answer:

400.00

Step-by-step explanation:

5 0

3 years ago

Please help i suck at these

vaieri [72.5K]

Answer:

1st Option;

j = 4.5

k = 2

Step-by-step explanation:

Let's solve for "j" first:

=> We know that by the definition of midpoint segment theorem we can say;

3j = 5j - 9

0 = 5j - 3j - 9

0 = 2j - 9

0 + 9 = 2j

9 = 2j

9/2 = j

4.5 = j

=> Now that we have j-value we use the same method to solve for k-value;

6k = k + 10

6k - k = 10

5k = 10

k = 10/5

k = 2

Therefore;

j = 4.5

k = 2

So the first option would be correct!

Hope this helps!

8 0

3 years ago

12/5 rename the fractions as mixed numbers

Alex_Xolod [135]

Answer:

2 2/5

Step-by-step explanation:

12 can go into 5 2 times with a left over of two, so it would be 2 which is 10 and a left over of two. The denominator stays the same. So it would be 2 2/5.

5 0

2 years ago

Si el radio de un circulo es de 3 pulgadas. cual es el area del circulo?

nata0808 [166]

Answer:

I don’t know

Step-by-step explanation:

4 0

3 years ago