x2 = 20

a.4.47

b. -3.97, 3.97

c. -10, 10

d. -4.47, 4.47

Answer:

**Answer: if using the quadratic formula it is D :) **

**hope this helps**

**Step-by-step explanation:**

Which of the following is unbalanced?A. 2Fe + 3Cl2 → 2FeCl3B. 2Na + 2H2O → 2NaOH + H2C. SnO2 + H2 → Sn + 2 H2OD. N2O5 + H2O → HNO3

Help me please! It’s number 45.

A segment has endpoints A (-1, 1) and B (8, 4) .If the segment is divided into four equal parts, the coordinates of the point closest to point A are _____?

The length of each side of a cube is increased by a factor of 4. What is the effect on the volume of the cube?

A submarine at - 45 feet dives 50 feet. Write an expression to represent the submarine's elevation. Need help

Help me please! It’s number 45.

A segment has endpoints A (-1, 1) and B (8, 4) .If the segment is divided into four equal parts, the coordinates of the point closest to point A are _____?

The length of each side of a cube is increased by a factor of 4. What is the effect on the volume of the cube?

A submarine at - 45 feet dives 50 feet. Write an expression to represent the submarine's elevation. Need help

**Answer:**

$45.79 multiplied by .50 equals 22.895

**Answer:**

686.85

**Step-by-step explanation:**

**The questions does not look complete, we can complete the question thus**

**The following represent matrices and the dimension of each is also stated below. A is a matrix of size 4X2 B is a matrix of size 3X5 C is a matrix of size 7X2 D is a matrix of size 5X4 E is a matrix of size 5X3.**

**Which of the following matrices products are defined?**

**Answer:**

EB is defined

BE is defined

BD is defined

and DA is defined

**Step-by-step explanation:**

To know that the product of two matrices are defined, the column of the first matrix must be the same as the row of the second matrix.

For example; for EB we have 5 columns for E and 5 rows for B. After this product is done it produces a matrix with dimension 3 x 3, which means 3 by 3 (3 rows by 3 columns)

**Answer:**

where is the question

**Step-by-step explanation:**

If you are asking for area, the answer is 35inches squared.

Area is length times width, so multiply 5 and 7,

Which gives you 35 inches squared

True or False? Please explain.

Thanks!

a regular polygon has all equal angles, interior and exterior, as well as all equal sides.

Check the picture below.

the one on the left is a regular octagon, as well as a convex one.

the one on the right is also an octagon, but is concave, the issue is that, though all sides remain equal, the angles do not, and so is **not** a regular octagon.

The **quotient **after **increased **by 4 is 8.

To calculate the **quotient **of 28 divided by 7, we perform the **division **and get:

28 ÷ 7

= 28/7

= (7 x 4)/ 7

= 4

Next, we are asked to **increase **this quotient by 4. Adding 4 to the quotient:

= 4 + 4

= 8.

Therefore, the **quotient **after **increased **by 4 is 8.

Learn more about **Division **here:

#SPJ6

**Answer:**

8 beacaus the seven increased from 4

Answer: 3x - x = 0

Step-by-step explanation:

1.Simplify -8x - x to -9x.

2. Simplify x - 4x to -3x.

3. Divide both sides by -3.

4. Subtract x from both sides.

5. Simplify 3x - x to 2 x.

6. Divide both sides by 2.

Step-by-step explanation:

1.Simplify -8x - x to -9x.

2. Simplify x - 4x to -3x.

3. Divide both sides by -3.

4. Subtract x from both sides.

5. Simplify 3x - x to 2 x.

6. Divide both sides by 2.

The answer is 3x-x=0