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Kobotan [32]
3 years ago
14

Lisa says that 43 is an odd number that is composite . Is she correct? Explain.

Mathematics
2 answers:
notsponge [240]3 years ago
8 0
No. 43 is not a composite number since it can be divided by 1 and itself.
Assoli18 [71]3 years ago
6 0

Lisa is incorrect although it is an odd number it is not composite. It only has itself and 1. Therefore its a prime number.

This is the definition for prime if you still dont understand.

A prime number is a whole number greater than 1 whose only factors are 1 and itself.

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shasta claimed that the equation x^2+25=0 can be solved by using its factored form of (x+5i)^2=0, and that -5i is the only zero
Elanso [62]

Answer:

The given equation will have two roots as +5i and -5i

Step-by-step explanation:

Shasta claimed that the equation x^2+25=0 can be solved by using its factored form of (x+5i)^2=0, and that -5i is the only zero for this function

The given equation is x^2+25 =0

This clearly shows it will have complex roots, and since it is a quadratic equation it will have 2 complex roots

x^2 = -25 \\x = \sqrt{-25} \\x= \sqrt{-1}* \sqrt{25}\\

x = i\sqrt{25}

x = ± 5i

It will be false to say that -5i will be the only complex root to this equation.

The given equation will have +5i and -5i as its roots.

Lets verify

x = +5i

(5i)^2 + 25 \\25i^2 + 25 \\25(-1) + 25\\-25 + 25 = 0

x = -5i

(-5i)^2 + 25 \\25i^2 + 25 \\25(-1) + 25 \\-25 + 25 \\ = 0

3 0
3 years ago
Jack’s bill at a restaurant came to $52.31. He wants to leave a 15% tip. How much will the new total be, including tip?
blondinia [14]
52.31*1.15=60.1565

round it to the nearest penny and you will get $60.16
4 0
4 years ago
Max packs cereal boxes into a larger box. The volume of each cereal box is 175 cubic inches. What is the approximate volume of t
Natali [406]
The complete question in the attached figure

we know that

in the larger box there are----------> 2*3*4-----> 24 cereal boxes
then

if  1 cereal boxes is---------------> 175 in³
24 cereal boxes----------------> X
X=24*175-------> x=4200 in³

the answer is
<span>the approximate volume of the larger box is 4200 in</span>³

3 0
3 years ago
Express 3500 in scientific notation that indicates it has two significant digits
arsen [322]

Hey there!

“3500 in scientific notion”

In order for you to find out your answer you have to move your decimal THREE places to your left. If you solve this, you should’ve gotten: 3.500

The “00” in the result we received is invisible so we don’t have to worry about right now in the equation to solve for your answer

Solve what you have ⬆️ ..

Answer: 3.5 × 10³

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

6 0
3 years ago
Please help with need an answer
velikii [3]
They're vertical angles so equal to each other so do 2x+3=3x+7

2x+3=3x+7
-3 -3
-----------------
2x=3x+4
-3x -3x
--------------
-x=4
divide both sides by -1
answer is
x=-4

if ur confused about any steps tell me and ill explain
4 0
3 years ago
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