Please answer this 4 me , 50 points <3

Answers

Answer 1

Answer: The answers are - 5x+8y and 5(4)+2(8)=36
Explanation
To solve the equation, you would substitute x and y for 5 and 8.
-Ex: 5(4)+8(2)=36
The numbers in the parentheses get multiplied by the numbers on the outside. Making ‘5(4)’=20 and ‘8(2)’=16
So 5(4)+8(2)=36

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Please someone help me i do not know the answer

Which is equal to 42 • 48?
a. 416
b. 410
c. 46
d. 4−6

Answers

Answer:

$4^(-6)$

Step-by-step explanation:

Given : $4^2 / 4^8$

To Find :Which is equal to $4^2 / 4^8$ ?

a. $4^(16)$

b. $4^(10)$

c. $4^6$

d. $4^(-6)$

Solution:

$4^2 / 4^8$

Property : $a^x / a^y = a^(x-y)$

Using the property :

$4^(2-8)$

$4^(-6)$

So, $4^2 / 4^8$ = $4^(-6)$

So With Questions Like These
Remember,
Multiply = add the exponents
Divide = Subtract the Exponents
AND ALWAYS KEEP THE BASE

So Its B

An open box is to be made from a rectangular piece of tin by cutting 3-inch squares out of the corners and folding up the sides. The length of the piece of tin is twice the width. The volume of the box will be 60 cubic inches. Find the dimensions of the original rectangular piece of tin

Answers

Answer:

Width of the Rectangular Tin=8 inch

Length of the Rectangular Tin= 16 inch

Step-by-step explanation:

Let the Width of the Rectangle=W

The length of the piece of tin is twice the width, Length = 2W

Since Squares of 3 inch are cut from all four corners of the rectangle

Length of the box = 2W-(3+3)=(2W-6) inches

Breadth of the Box = W-(3+3)=(W-6) inches

Height = 3 inches

Volume of the box = 60 cubic inches

Now, Volume of a cuboid=lbh

3(2W-6)(W-6)=60

Divide both sides by 3

(2W-6)(W-6)=20

Expanding the brackets

$(2W-6)(W-6)=20\n2W^2-12W-6W+36=20\n2W^2-18W+36-20=0\n2W^2-18W+16=0$

Factorizing

$2W^2-16W-2W+16=0\n2W(W-8)-2(W-8)=0\n(W-8)(2W-2)=0\nW-8=0 , 2W-2=0\nW=8, 1$

Since the Width cannot be less than 6,

Width of the Rectangular Tin=8 inch

Length= 2 X 8 = 16 inch

Lisa is seven times as old as her brother. She will be four times as old as her brother in three years. Represent the above situation in mathematical form.

Answers

Answer:

Let B = the brothers age now

Let L = Lisa's age now

Then today:

L = 7B

And three years from now, Lisa's current age plus 3 equals 4 times the brothers age plus 3 represented by the following formula

L+3 = 4(B+3)

Now we can substitute the value of L in the first formula for L in the second formula

7B + 3 = 4(B+3)

So the answer is C

Step-by-step explanation:

Rewrite the multiplication problem using improper fractions.

1 5/6 x 2

Answers

22/6 is the result of the product of the expression.

Multiplication problem using improper fractions.

To rewrite the multiplication problem using improper fractions, we need to convert the mixed number 1 5/6 to an improper fraction.

1 5/6 = 11/6

Now, the multiplication problem can be expressed as:

1 5/6 x 2= 11/6 x 2

1 5/6 x 2 = 22/6

Therefore, the multiplication problem, using improper fractions, is 22/6

Learn more on multiplication of fraction here: brainly.com/question/30391645

#SPJ2

you'll convert 1 5/6 by multiplying the denominator to the whole number (6) then add the numerator 6 + 5 = 11. So the answer is

11/6 x 2

Express 5×-4y=20 in the form a×+by+c=0and write the value of a,band c

Answers

Answer:

a = 5

b = -4

c = -20

Step-by-step explanation:

Here, we want to express the given equation in the following form;

So we can have this as;

5x-4y-20 = 0

That means we have;

a as 5

b as -4

and c as -20

Lois is 3 years older than Oscar. The sum of their ages is no more than 20. Write an inequality that can be used to represent this situation, where x represents Oscar’s age.