Ask question

Ask question

All categories

2 years ago

7

Juanita wrote 3 x 47 as 3 x 40 + 3 x 7. Which property did she use to rewrite the expression?

1 answer:

OlgaM077 [116]2 years ago

8 0

Distribute proporty
a(b+c)=ab+ac
3=a
b=40
c=7
3(40+7)=3*40+3*7

You might be interested in

Which is the simplified form of the expression?

Oksanka [162]

Answer:1/x^21y^12

Step-by-step explanation:

7 0

2 years ago

Can you solve this ? Thanks

andreyandreev [35.5K]

For #1
you would do
8 + 8 + 5 + 5 = 26
so they use 26 inches of ribbon

for #2
since there is 8 sides and each side is 3 feet we multiply
8 x 3 = 24
so the perimeter of her collage room is 24 feet

for #3
its cut off...

5 0

2 years ago

The number of marbles of different colors stored in a hat is listed below:

Kamila [148]

There is a 1/4 chance of getting the Blue Marble out of the bag. But when it is 2 in a row you have to multiply your chances so it would be 1/4 * 1/4 or 1/16

7 0

2 years ago

Read 2 more answers

Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real

hoa [83]

Answer: $0=2x^2-7x-9\\0=4x^2-3x-1\\0=x^2-2x-8$

Step-by-step explanation:

We know that the standard quadratic equation is ax^2+bx+c=0

Let's compare all the given equation to it and , find discriminant.

1. a=2, b= -7, c=-9

$b^2-4ac=(-7)^2-4(2)(-9)=49+72>0$

So it has 2 real number solutions.

2. a=1, b=-4, c=4

$b^2-4ac=(-4)^2-4(1)(4)=16-16=0$

So it has only 1 real number solution.

3. a=4, b=-3, c=-1

$b^2-4ac=(-3)^2-4(4)(-1)=9+16=25>0$

So it has 2 real number solutions.

4. a=1, b=-2, c=-8

$b^2-4ac=(-2)^2-4(1)(-8)=4+32=36>0$

So it has 2 real number solutions.

5. a=3, b=5, c=3

$b^2-4ac=(5)^2-4(3)(3)=25-36=-9$

Thus it does not has real solutions.

5 0

2 years ago

Read 2 more answers

Match each fraction with the equivalent fraction on the right

Nikolay [14]

Answer:

3/4 - 6/8

1/3 - 2/6

1/2 - 5/10

3/5 - 6/10

1/4 - 2/8

3 0

2 years ago

Read 2 more answers