Please help me please i really need help please

Answers

Answer 1

Answer:

Step-by-step explanation:

right answer

...... y= 1/2x²

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Hello please help me geometry :)

The machinist's goal was to increase his production by at least 10% each day. Assume he achieved his goal. If he was able to machine 25 items on Tuesday, how many would he machine on Wednesday?

Answers

Answer:

The number of machine produced on Wednesday is 27.5.

Step-by-step explanation:

It is given that the number of machines produced by machinist on Tuesday is 25.

The machinist's goal was to increase his production by at least 10% each day.

Therefore the number of produced machines on Wednesdays is 1% more than the number of machines produced on Tuesday.

$\text{10 \% of 25}=(10)/(100)* 25=2.5$

The number of machine produced on Wednesday is,

$25+2.5=27.5$

Therefore the number of machine produced on Wednesday is 27.5.

25+10%= 27.5 Hope this helps.

Sam baked 6 cupcakes less than Michelle. Sam baked 18 cupcakes. Which equation will tell you how many cupcakes Michelle baked?

Answers

Michelle baked 12 cupcakes

(Michelle's cupcakes) minus 6 equals 18

Create an expression without parentheses that is equivalent that is equivalent to 4(6x+x)

Answers

This is what the distributive property is all about.
4(6x +x) = 4*6x +4*x = 24x +4x
Of course, this can be simplified further by combining the terms.
24x +4x = (24 +4)x = 28x

Equivalent expressions without parentheses are ...
24x +4x
28x

Solve for x Write both solutions, seperated by a comma 4x^2+5x+1=0

Answers

Answer:

-1/4 , -1

Step-by-step explanation:

I solved it using Factorization method and Quadratic Equation .

Factorization Method

$4x^2+5x+1=0\nWrite +5x- as- a -difference(write+5x-using- two- numbers -in-which-their-sum-is ; 5-and-their-product-is ; 4)\n4x^(2) +4x+1x+1=0\nFactorize-out-common-terms\n4x(x+1)+1(x+1)=0\nFactor-out-(x+1)\n(4x+1)(x+1)=0\n4x+1 =0 \nx+1=0\n4x=0-1\nx =0-1\n4x =-1\nx =-1\n4x=-(1)/(4) \n\nAnswer = -1/4 , -1$

Quadratic Equation

$4x^2+5x+1=0\na = 4\nb =5\nc = 1\n\nx =(-b\±√(b^2 -4ac) )/(2a) \n\nx = (-(5)\±√((5)^2-4(4)(1)) )/(2(4)) \n\nx = (-5\±√(25-16) )/(8) \n\nx = (-5\±√(9) )/(8) \n\nx = (-5\±3)/(8) \n\nx =(-5+3)/(8) \n\nx = (-5-3)/(8) \n\nx = (-2)/(8) \n\nx = (-8)/(8) \n\nx = -(1)/(4) \nx=-1$

There are 45 new houses being built in a neighborhood. Last month, 2/3 of them were sold. This month 2/5, of the remaining houses were sold. How many houses are left to be sold?

Answers

Answer: 9 houses

Step-by-step explanation:

Step 1:

Since 2/3 of the houses were sold last month, 1/3 of them were left.

45 * 1/3 = 15 houses left last month

Step 2:

Since 2/5 of the remaining houses were sold this month, 3/5 of them were left

15 * 3/5 = 9 houses left to be sold

there's your answer hope this helps :)

A paddle boat rents for $10 plus $8 per hour. How much does it cost to rent a paddle boat for h hours? Write an expression and show your work.

Answers

10 + 8h

10 would be the initial cost and would be unchangeable, leaving it as a constant. The $8 on the other hand increases based on the number of hours, making it the constant with the variable next to it.

Hope this helps!

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Find three consecutive numbers whose sum is 612

The time needed for all college students to complete a certain paper-and-pencil maze follows a normal distribution with a population mean of 30 seconds and a population standard deviation of 3 seconds. You wish to see if the mean time μ (where μ stands for population mean) is changed by vigorous exercise, so you have a group of nine college students exercise vigorously for 30 minutes and then complete the maze. It takes them an sample average of 31.2 seconds to complete the maze. Use this information to test the hypotheses: H0: μ = 30, Ha: ≠30 at the significance level of 0.01. You conclude:a) There is not enough evidence to support the claim.b) There is enough evidence to support the claim.

Combine the like terms to create an equivalent expression. 7z + 15 + 2