Mathematics High School

100 POINTS PLEASE HELP ASAP!!!!!!!!!!!

Answers

Answer 1

Answer:

its the first one

Step-by-step explanation:

Answer 2

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yall like that ;)?

Related Questions

(PLEASE HELP)Solve the given system using your choice of either graphically or algebraically. Show and explain all work.
y = 2x - 4
x + 2y = 12

Answers

Answer:

algebraically.

y = 2x - 4........….....(1)

x + 2y = 12..............(2)

substituting the value of y in equation (2) we get

x+2(2x - 4)=12

x+4x-8=12

5x=12+8

x=20/5=4

substituting the value of x in equation(1) we get

y=2×4-4=8-4=4

:.(x,y)=(4,4)answer

The value of x = 4

The value of y = 4

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the first equation be = A

Let the second equation be = B

Now ,

y = 2x -4

Subtracting 2x on both sides , we get

y - 2x = -4 be equation (1)

And ,

x + 2y = 12 be equation (2)

Now , on simplifying the two equations , we get

Multiply equation (1) by 2 , we get

2y - 4x = -8 be equation (3)

Now , subtract equation (3) from equation (2) , we get

5x = 20

Divide by 5 on both sides , we get

x = 4

Therefore , the value of x is 4

Substitute the value of x in equation (2) , we get

4 + 2y = 12

Subtracting 4 on both sides , we get

2y = 8

Divide by 2 on both sides , we get

y = 4

Therefore , the value of y is 4

Hence , The value of x and y is 4

Answer:

3.2 x 10^5 goes in greater than 2.4 x 10^4

1.9 x 10^-1 goes in less than 1.2 x 10^2

2.2 x 10 goes in less than 1.2 x 10^2

2.4 x 10^3 goes in between 1.2 x 10^2 and 2.4 x 10^4

5.9 x 10^2 goes in between 1.2 x 10^2 and 2.4 x 10^4

6.1 x 10 goes in less than 1.2 x 10^2

2.5 x 10^4 goes in greater than 2.4 x 10^4

Step-by-step explanation:

First let's find out what 2.4 x 10^4 and 1.2 x 10^2 is.

2.4 x 10^4 = 24000

1.2 x 10^2 = 120

3.2 x 10^5 is obviously greater than 2.4 x 10^4 because the exponent of ten in 3.2 x 10^5 is one more value than the exponent in 2.4 x 10^4. The decimal is also greater.

1.9 x 10^-1 = .19, which is less than 1.2 x 10^2

2.2 x 10 = 22, less than 1.2 x 10^2

2.4 x 10^3 = 2400, in between 1.2 x 10^2 and 2.4 x 10^4

5.9 x 10^2 = 590, in between 1.2 x 10^2 and 2.4 x 10^4

6.1 x 10 = 61, less than 1.2 x 10^2

2.5 x 10^4 we can solve without doing the math, 2.5 is greater than 2.4 meaning the product will be greater, to check I did the math 2.5 x 10^4 = 25000, greater than 2.4 x 10^4

P.S Next time right ^ before the exponents, so we know they are exponents

Layla was out at a restaurant for dinner when the bill came. Her dinner came to $9. After adding in a tip, Before tax, she paid $10.80. Find the percent tip.

Answers

Answer: 12%

Step-by-step explanation:

how many solutions does 4x-20= -2 (-2x + 10) have

Answers

Answer:

It only has one solution.

Step-by-step explanation:

4x-20= -2 (-2x + 10)

Add 20 to both sides

4x-20+20=4x-20+20

simplify:

4x=4x

Subtract 4x from both sides

4x-4x=4x-4

Simplify:

0=0

Sara wants to buy a new tennis racket for $120. She currently has $40
and is saving $10 per week. The store owner is decreasing the price of
the tennis racket $5 every week he doesn't sell it. How many weeks
until she has enough money to buy the racket?.
weeks

Answers

Answer:

7 weeks

Step by step explanation:

Julieta and Hanis have 3 dozen chocolate chip muffins, 54 banana muffins and 27 blueberry muffins. They are preparing identical gift baskets for their friends with all three types of muffins. They plan on using all of the muffins in the baskets. What is the largest number of baskets they can make and still have enough muffins

Answers

Answer:

9 is the largest number of baskets they can make and still have enough muffins.

Step-by-step explanation:

If they want to use all three types of muffins for the basket, they’d have to find the GCF (greatest common factor) of 30, 54, and 27, which is 9. They’d still have a lot left over... but if they want to put all three types of muffins then they can only make 9 full baskets.

Hope this helped :)

Which represents g(x)?

Answers

Answer:

Step-by-step explanation:

what is the equation for y=(1/4)^x+1

Answers

Answer:

A:(1,-3/4)

Step-by-step explanation:

Use substitution to solve the system

y= 1/4x-1

y= -1/2x-1/4

1/4x-1 = -1/2x-1/4, Solve for x

3/4x= 3/4, x = 1, Next solve for y by plugging the x-value into either equation.

y=1/4(1)-1

y=-3/4

You want to buy a pet lizard that costs $45. You already have $14 and you plan to save $7 per week. If w represents the number of weeks until you have enough money to buy the , what equation could you use to find the value of w? Explain how you could set up an equation to find the amount of money you should save each week if you want to buy the lizard in 3 weeks.

Answers

9w+12
9*6+12 OR 9(6)+12

5( 2a + b - 8) =
......................................

Answers

Answer:

10a+5b-40

Step-by-step explanation:

5(2a+b-8)

Distribute

5(2a)+5(b)-5(8)

10a+5b-40

Answer:

10a+5b-40

Step-by-step explanation:

distribute to get the simplified version

10a+5b-40

PLEASE HELP! GIVING POINTS :)!

Answers

Answer:

120

Step-by-step explanation:

180/0.60=300

300-180=120

The answer will be 72 bec if you divide 180 by 10 you will get 18 per 10% is going to be 18 so 60%/100%=40% and then 18 times 4 is 72

what expresion is equivalent to 2(14x - 3y + 28x + 12.2 - 5y - 17.5) ?
A. 84x - 16y - 10.6
B. 28x - 6y - 10.6
C. 42x - 8y -5.3
D. 84x - 16y - 5.3

Answers

Answer:

Step-by-step explanation:

just did the quiz on edge

Given m||n, Find the value of x. Need help.

Answers

9514 1404 393

Answer:

x = 12

Step-by-step explanation:

The two marked angles are a linear pair, so are supplementary.

(8x -20)° +(8x +8)° = 180°

16x -12 = 180 . . . . . . . . . . . divide by °, collect terms

16x = 192 . . . . . . . . . . . add 12

x = 12 . . . . . . . . . . . divide by 16

Please help. Picture is attached below. Thank you! :) Will give brainliest!!

Answers

Answer:

e = 2

Step-by-step explanation:

Hope this helps! ///////////////////////

7(2e - 1) - 3 = 6 + 6e =

14e - 7 - 3 = 6 + 6e =

14e - 10 = 6 + 6e

-6e -6e

8e - 10 = 6

+ 10 + 10

8e = 16

e = 2

what's bigger -1/5 or -0.9

Answers

Answer:

-1/5

Step-by-step explanation:

-1/5=-0.2

-0.9<-0.2

The mean average of 4 numbers is 88 what is the fourth number if three of the numbers are 80 95 and 85?

Answers

Answer:the fourth number is =97

Step-by-step explanation:

Mean = total number of the given numbers( x1 +x2+ x3....) / numbers given

Let the fourth number be x

given that the mean of 4 numbers = 88 and only 3 numbers are given

such that

Mean = total number of the given numbers( x1 +x2+ x3....) / numbers given becomes

88= (80 +90 + 85 + x ) / 4

88 x 4 =80 +90 + 85 + x

352=255+x

x= 352-255

x=97

a polygon is a figure that curves
a)true
b)false
c)both a and b
d)incorrect
explain your answer:❤

Answers

Answer:

I think that it would be true.

Step-by-step explanation:

I think it's true, because it has the union of three or more line segments whose endpoints meet.

Which equation describes the line that passes through the points (-4, 19) and (2, -1)

Answers

Answer:

y=-5/2x+4

Step-by-step explanation:

find the slope by using y2-y1/x2-x1

-1-19/2-(-4)

simplify

-20/8

simplify

-5/2

use slope-intercept form, y=mx+b

since we know the slope, find b

plug in one of the ordered pairs into the equation

-1=(-5/2)(2)+b

simplify

-1= -10/2+b

simplify

-1=-5+b

add 5 to both sides

b=4

plug b into y=-5/2x+b

y=-5/2x+4

the answer would be.:answer- -5/2+4

What is the equation of a line perpendicular to y= 3x +6 that crosses the ordered pair (3,2).
(Hint: a line perpendicular to an equation has an opposite reciprocal slope)

Answers

Answer:

y=-[tex]\frac{1}{3}[/tex]x+3

Step-by-step explanation:

For each value of u, determine whether it is a solution to 2+9u<-16.

7: yes or no
-2: yes or no
2: yes or no
-7: yes or no

Answers

Answer:

7: no ( the answer will be 65 )

-2 : no ( the answer will be -16 and -16 is not less than -16 instead they're equal)

2 : no ( the answer will be 20 )

-7 : no ( the answer will be -61)

Non of them satisfy the condition

Hope this helped

Hope this helped ALL THE BEST!!

What is 4/9 closest to 0,1/2 or 1

Answers

Answer:

1/2

Step-by-step explanation:

4/9 is equal to 4.444 repeating so that would be closest to 1/2

the correct answer is 0.44 which is closer to 0.5

Which expression is equivalent to 76a^2b^3/19ab

Answers

The expression 76a²b³ / 19ab is equivalent to the expression 4ab².

What is an equivalent expression?

The equivalent is the expressions that are in different forms but are equal to the same value.

The expression is given below.

⇒ 76a²b³ / 19ab

Then the expression can be written as

⇒ 4ab²

Then the expression 76a²b³ / 19ab is equivalent to the expression 4ab².

More about the equivalent link is given below.

https://brainly.com/question/889935

#SPJ1

What rule is shown by this input/output table and coordinate plane?

A. add 3
B. subtract 3
C. divide by 2
D. multiply by 2

Answers

The answer to this problem is B. Subtract 3

Answer:

Step-by-step explanation:

subtract 3

input and output always input should be your first one.

So, 6-3=3 7-3=4 8-3=5

9-3=6 10-3=7

Hope this helps u:)

Pls mark brainlist

If D varies directly with t and D is 105 when t is 3, find D when t is 8.

Answers

Answer:

280

Step-by-step explanation:

answer is 280

Answer:

answer is 280

Step-by-step explanation:

d=xt

105=x3

35=x

d=35*8

d=280

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