MATHEMATICS HIGH SCHOOL

6TH GRADE MATH. PLEASE HELP! 25 POINTS!
6TH GRADE MATH. PLEASE HELP! 25 POINTS! - 1

Answers

Answer 1
Answer:

Answer:

Express as exponents) 1) 81 / 2) 4/9 3) -64

Challange: Use parenthesis) 1) 3b 2) 8x^3y^3 3)15x^2y^2

Evaluate) 1) 125 2) 81/256

Challenge) 9a^2b^2

True or flase) 1) flase 2)  false 3) true 4) false

Step-by-step explanation:

Related Questions

The two angles of a triangle are 78 ° and 82°. So what is the measure of the remaining third angle? a. 160° b. 20° c. 360° d. 180°​
The product of two consecutive integers is 110. find the integers?
Which expression is the LCD of these fractions1/p^3/4/7 A p^3+7 B p+7 C 7p^3 D 7p
The difference between longitude and altitude
Solve for x in the equation x squared + 2 x + 1 = 17.x = negative 1 plus-or-minus StartRoot 15 EndRootx = negative 1 plus-or-minus StartRoot 17 EndRootx = negative 2 plus-or-minus 2 StartRoot 5 EndRootx = negative 1 plus-or-minus StartRoot 13 EndRoot

Most likely to describe the change received from a cash purchase? A: Whole number
B: Negative numbers
C: Rational numbers

Answers

Answer:

C: Rational numbers

Step-by-step explanation:

The change received in a cash purchase, if given in £ (or $) would most certainly be a Rational number (that is a number that can be represented as a/b where a and b are coprimes). However if measured in p (or cents) then the answer would be whole numbers.

You cannot go wrong with option C as whole numbers (integers) are a subset of rational numbers. That is, all whole numbers are rational numbers.

86 is 45% of what number

Answers

To get the answer we can use proportion
86 --------------45%
x ---------------- 100%
Now cross multiply
x*45%=86*100
45x=8600      /:45 (divide both sides by 45)
x=191.11 - its the answer
The best thing to do is to find 1%, and you can do this by diving 86 by 45. 86/45= 1.9111, and you've then got to multiply this by 100, and this gives you 191.11Hope this helps :)

20% of 90, and i have to show workings out

Answers

10% of 90 is 9, 10% times 2 is 20%, therefore 20% of 90 is 2*10% of 90, or 18
It helps to know that 10% of anything is the number divided by 10. So 10% of 90 = 9. As it is 20% and not 10, just do it twice and add them together :) OR just times it by 2 which is much easier. So 9 x 2 = 18. 

10% of a number is the number divided by 10.
5% of a number is the number divided by 10 THEN divided by 2. 
1% of a number is the number divided by 100.

A computer store sells a laptop for $475. The sales tax is 7%. Including sales tax, what is the total cost for a laptop ?

Answers

answer: $508.25

explanation: .07 x 475 = $33.25
33.25 + 475 = 508.25

A spinner has the numbers 1 to 4 on it.Probability of spinning 4 is 0.1
Probability of spinning 1 is 0.6
Probability of spinning 2 is the same as 3.

What is the probability of spinning a number 3?

Answers

Hello,

P(1)+P(2)+P(3)+P(4)=0.6+2P(2)+0.1=1
==>2P(2)=1-0.6-0.1
==>2P(2)=0.3
P(2)=P(3)=0.15

A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as editing) and variable costs (such as printing). The one-time fixed costs will total $60,239
. The variable costs will be
$10.50
per book. The publisher will sell the finished product to bookstores at a price of
$25.25
per book. How many books must the publisher produce and sell so that the production costs will equal the money from sales?

Answers

so the total=60239
so 10.5 per book
but -25.25 per book (since this is a negative cost or a gain)
so lets say they sell 1 book
it cost 10.5 and they gain 25.25 so they gain 14.75 total per book


so 14.75 times x books=60239
divide both sdies by 14.75
x=60239/14.75
then divide 60239 by 14.75 and get x=4084
they will need to sell 4084 books
assume the number of books X

the cost of the books = 60.239 + (10.50 X)
the sale amount = 25.25 * X

so 60.239 + 10.5 X = 25.25 X
60.239 = (25.25 - 10.5)X
60.239 = 14.75 X
X = 60.239 / 14.75

So X = 4.084 
so the publisher needs to sell 4 books
Other Questions
The slope of a direct variation function is -4. What is the equation of the function? y = 4 x y = - 1/4 x y = -4 x y = x - 4
If a = 2.3 units, b = 3 units, c = 5 units, and d = 7 units, what is the volume of the two prisms?a 126 cubic unitsb 71.45 cubic unitsc 89.45 cubic unitsd 74.75 cubic units
90. The pharmaceutical abbreviation "bid" means _____________________. a. once a day b. twice a day c. once a week d. twice a week
Calculate your answer to the nearest hundredth 3x=40