MATHEMATICS HIGH SCHOOL

PQRS is a rhombus. If PO = 4 cm and OQ = 3 cm, then find PQ.

Answers

Answer 1

Answer:

Answer:

7cm

Step-by-step explanation

If O is the middle of the rhombus then you just add PO to OQ

PO + OQ = PQ

4+3 = 7

Answer 2

Answer:

Answer:

PQ is gonna be the same as whatever is opposite of it

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Mrs.Brewer spent 11.52 for some pencils that were on sale for 0.72 each. how many pencils did she buy?

Can someone help with this plz

Answers

Answer:

49°

Step-by-step explanation:

I hope it helps

49° i hope this helped lol

A phone company uses the equation y=0.15x+10 to find y the monthly charge for a customer sending x text messages. How many text messages are sent if the monthly charge is $77.50?

Answers

y=0.15.77.5+10 y=11.62+10 y=21

Can someone please tell me if I’m correct thanks I really need an answer thanks

Answers

Answer:

yeah im pretty sure you are

Step-by-step explanation:

Answer:

the last one is the correct answer

Step-by-step explanation:

In order for it to be proportional it has to go through the origin (0,0)

Proportional - y=mx

Non Proportional - y=mx+b

Which costs more per issue, an 18-issue subscription for $40.50 or a 12-issue subscription for $33.60? Explain. (Make sure to show your work and explain your solution Plz.)

Answers

You have to divide total price by "18 times" for the first and by "12 times" for the second.

So,

The 18-issue subscription costs $(40,50)/(18) =\$2.25$ per issue.
The 12-issue subscription costs $(33,60)/(12) =\$2.80$ per issue.

Therefore the 12-issue subscription costs more per issue.

The 18-issue subscription costs 40.50/18. You divide 40.50/18. It is 2.25 per issue
The 12-issue subscription costs 33.60/12. You divide 33.60/12. It is 2.80 per issue

Therefore: The 12-issue subscription costs more than the 18-issue subscription.

How do you write the standard number 0.00009 in scientific notation?9 × 10-5
9 × 10-4
90 × 10-4
9 × 10-6

Answers

$0.\underbrace{00009}\n~~~~~~~5\n\n\n0.00009 =\boxed{\bf{ 9 * 10^(-5)}}$

Your answer is A.

PLEASE HELP!!!!!! Which expressions are equivalent to 1/81 ? Check all that apply.8^ -1

9^ -2

9^ 8/9^4

9^8/9^10

9^ -6 · 9^3

9^5 · 9^ -7

Answers

Answer:

$9^(-2)\n\n(9^(8))/(9^(10))\n\n9^(5)*9^(-7)$

Step-by-step explanation:

Let's evaluate the answers.

Think of numbers with negative exponents as numbers on the wrong side of the fraction. So if you have a negative exponent, you put it at the bottom of the fraction or up and then you remove the negative sign.

So let's take the first answer:

$9^(-2) \:is\:actually\:equal\:to\: (1)/(9^(2))\n\n(1)/(9^(2)) = (1)/(81)}$

Now the next one, according to the law of exponents, when dividing we subtract the exponents. (But this only applies if the coefficients are the same!)

$(m^(x))/(m^(y)) = m^(x-y)$

Applying this rule to the second answer:

$(9^(8))/(9^(10)) = 9^(8-10) = 9^(-2)=(1)/(9^(2)) = (1)/(81)$

The third one:

$9^5*9^(-7) = (9^5)/(9^(7)) = 9^(5-7) = 9^(-2) = (1)/(9^2) = (1)/(81)$

If you apply the same rules to the rest of the choices, you wil find that they are not equivalent to 1/81.

The expressions that are equivalent to 1/81 are $9^(-2)$ , $(9^8)/(9^(10))$ , and $9^5 \cdot 9^(-7)$ .

To determine which expressions are equivalent to 1/81, we can simplify each expression and check if it equals 1/81.

$8^(-1)$ : This expression is equivalent to 1/8, not 1/81. Therefore, it is not equivalent. $9^(-2)$ : This expression is equivalent to 1/9², which simplifies to 1/81. Therefore, it is equivalent to 1/81. $(9^8)/(9^4)$ : This expression simplifies to $9^((8-4)) = 9^4$ , which is not equal to 1/81. Therefore, it is not equivalent. $(9^8)/(9^(10))$ : This expression simplifies to $9^((8-10)) = 9^(-2)$ , which is equivalent to 1/9². Therefore, it is equivalent to 1/81. $9^((-6)) \cdot 9^3$ : This expression simplifies to $(1)/(9^6) \cdot 9^3 = 1/729$ . Therefore, it is not equivalent. $9^5 \cdot 9^((-7))$ : This expression simplifies to $9^((5-7)) = 9^((-2))$ , which is equivalent to 1/9². Therefore, it is equivalent to 1/81.

Thus, the expressions that are equivalent to 1/81 are $9^(-2)$ , $(9^8)/(9^(10))$ , and $9^5 \cdot 9^(-7)$ .

Learn more about the expression here :

brainly.com/question/21751419

#SPJ6

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