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2 years ago

What number completes this number

Mathematics

1 answer:

gtnhenbr [62]2 years ago

8 0

Answer: F

Explanation: 3 X (5 + 8) = 39 and (3 X 5) + (3 X 8) = 39 making both sides equal each other.

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Apples are on sale at four different grocery stores. Which store offers the

Arturiano [62]

Full question attached

Answer:

Greenland offers the lowest unit rate, dollars per pound

Step-by-step explanation:

For McCoy, $4.5 = 5 pounds

Therefore $1 = 5pounds/4.5= 1.11 pounds

1 pound= 1/1.11= $0.9009

For Eat smart

$3=2 pounds

Therefore $1=2pounds/3 = 0.667 pounds

1 pound = 1/0.667= $1.499

For Greenland

$1/5= 1/4 pounds

$0.2=0.25 pounds

$1= 1.25 pounds

Therefore 1 pound= 1/1.25= $0.8

For Mother Nature

$0.95= 1 pound

Therefore Greenland offers the lowest unit rate at $0.8 per pound

7 0

3 years ago

The sum of two numbers is 46 the difference is 16

Sindrei [870]

31 and 15

31+15=46

31-15=16

3 0

3 years ago

Read 2 more answers

What is smallest number that is divisible by 20 ,48and 72

Katyanochek1 [597]

Answer:

Step-by-step explanation:all of them can be divided by 2 and it is the smallest number.

7 0

2 years ago

Read 2 more answers

How many Times can 20 be divided.

natali 33 [55]

20 can be divided by 2 twice, with 5 remaining

20 can be divided by 4 once, with 5 remaining

20 can be divided by 5 once, with 4 remaining

20 can be divided by 10 twice

20 can be divided by 20 once

hope this helps

6 0

3 years ago

Which of the following equations have complex roots?

mestny [16]

Answer:

Step-by-step explanation:

Complex roots of quadratic functions occur when the <u>discriminant is negative</u>.

<u>Discriminant</u>

$b^2-4ac\quad\textsf{when}\:\:ax^2+bx+c=0$

Evaluate the discriminant of each of the given equations.

$\textsf{A.} \quad 3x^2+2=0$

$\implies a=3, \quad b=0, \quad c=2$

$\implies b^2-4ac=0^2-4(3)(2)=-24$

As -24 < 0 the equation will have complex roots.

$\textsf{B.} \quad 2x^2+1=7x$

$\implies 2x^2-7x+1=0$

$\implies a=2, \quad b=-7, \quad c=1$

$\implies b^2-4ac= (-7)^2-4(2)(1)=41$

As 41 > 0 the equation does not have complex roots.

$\textsf{C.} \quad 3x^2-1=6x$

$\implies 3x^2-6x-1=0$

$\implies a=3, \quad b=-6, \quad c=-1$

$\implies b^2-4ac=(-6)^2-4(3)(-1)=48$

As 48 > 0 the equation does not have complex roots.

$\textsf{D.} \quad 2x^2-1=5x$

$\implies 2x^2-5x-1=0$

$\implies a=2, \quad b=-5, \quad c=-1$

$\implies b^2-4ac=(-5)^2-4(2)(-1)=33$

As 33 > 0 the equation does not have complex roots.

Learn more about discriminants here:

brainly.com/question/27444516

brainly.com/question/27869538

Learn more about complex roots here:

brainly.com/question/26344541

6 0

2 years ago