4 years ago

A fact family for 9,5,45

Mathematics

2 answers:

Sauron [17]4 years ago

8 0

9...45/5

5...45/9

45...9*5

alexgriva [62]4 years ago

4 0

Answer:

A fact family is a group of math facts using the same numbers. In the case of addition/subtraction, you use three numbers and get four facts. In this case we use multiplication and division.

Step-by-step explanation:

Multiplication: 9 x 5 is 45

Same as 5 x 9 is 45

Division: 45 ÷5 is 9

Same as 45÷9 is 5

Hope this helps :)

You might be interested in

Juan works at a retail store. He earns $6 an hour plus 1 $5 bonus each time he gets someone to sign up for the stores credit car

Mariana [72]

Answer:

6h + 5b = a

Step-by-step explanation:

7 0

3 years ago

Solve for x. Use the completing the square method. x² + 8x = 7

AfilCa [17]

Divide the coefficient by 2 then square the quotient.
Add the result to both sides of the equation.

$x^2 + 8x = 7$
$x^2 + 8x + (\frac{8}{2})^2 = 7 + (\frac{8}{2})^2$
$x^2 + 8x + 4^2 = 7 + 4^2$
$x^2 + 8x + 16 = 7 + 16$
$x^2 + 8x + 16 = 23$

Now, factor the left-hand side.

$x^2 + 8x + 16 = 23$
$(x + 4)^2 = 23$

Take the square root of both sides.

$(x + 4)^2 = 23$
$x + 4 = \sqrt{23}$
$x = -4$ ± $\sqrt{23}$

4 0

4 years ago

Read 2 more answers

1. What is the measure of a central angle of a regular 15-gon? A. 24 degrees B. 156 degrees C. 2340 degrees D. 360 degrees

maw [93]

1. Make a circle in the middle and divide 360 by 15 = 24
2. B) 156
3. A) 24
4. C) 2340
5. D) 360

3 0

4 years ago

Which equations represent this fact family ? Check all that apply

yanalaym [24]

Answer:

9-11=20

and

20-11=9

Step-by-step explanation:

20+11=31, not 9- the first one is not the answer

20+9-29, not 11- the third is incorrect

11-20=-9, not 9- fifth is not it

6 0

3 years ago

How do you solve for x (ASAP)

algol13

Answer:

38 degrees

Step-by-step explanation:

5 0

4 years ago