Please Help me please

Answers

Answer 1

Answer: It would be the bottom answer assuming the lines are parallel

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6) A student scored an 88, S2, and 76 on three math tests. What does the student need to get on the fourth test to have an average of 85 for all four tests? James wants to use algebra to solve this problem. Which equation should he use? 256 4x 85 256 x 85 85 x 256 256 85x

Answers

Equation B.
The average of the sum of the existing 3 scores plus the score of the new test should equal 85.

To solve this, multiply both sides by 4 and subtract 256. The student needs an 84 in order to have an average of 85.

4square plus 2power of xdivide by 2 equal to 16 what is the answer of this question

Answers

Answer:

$x=4$

Step-by-step explanation:

We can solve this question by understanding what is first says. The expression tells us 4 square which is 16 plus to to the power of x and all that divided by two: $16+2^(x) / 2 = 16$

Now we can solve for x:

1. $16 + 2^(x) = 32$

2. $2^(x)=16$

3. $x=4$

How much orange juice at 42¢ a liter should be mixed with grapefruit juice worth 32¢ a liter to make 200 liters of a mixture worth 36¢ a liter?If x represents the amount of orange juice used, then which of the following expressions represents the total cost of the grapefruit juice used?

0.32x
0.32(200 - x)
0.32(x + 200)

Answers

Answer: Second option is correct.

Step-by-step explanation:

Since we have given that

Cost of grapefruit per liter = 32

Cost of orange juice per liter= 42

Total quantity of mixture = 200 liters

Let the quantity of orange juice be x

So, the quantity of grapefruit juice be 200-x

So, the total cost of the grapefruit juice used will be

$0.32(200-x)$

According to question,

$0.32(200-x)+0.42x=200* 0.36\n\n64-0.32x+0.42x=72\n\n0.42x-0.32x=72-64\n\n0.1x=8\n\nx=80\n\n\text{ So, the amount of grapefruit juice will be }=200-80=120$

Hence, Second option is correct.

X = the amount of orange juice that still has to be mixed

If it says that the total of the juice will be 200 liters, then (200-x) = the amount of grapefruit juice that still needs to be mixed.

The grapefruit juice amount would be: 200 - 80 = 120 liters

*****Write a polynomial using the roots -3,5i. PLEASE HELP IM SO LOST!!!

Answers

The polynomial $(x-a)$ has a unique root, $a$ , for any $a$ .

Hence $(x+3)(x-5i)$ is a polynomial with roots $-3$ and $5i$

What is the slope of the line perpendicular to y=-5x-3

Answers

Step-by-step explanation:

The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept.

What is a unit? * what is a unit? a process used to convert units and rates using a conversion factor and multiplication a quantity used as a standard measurement a solution or an answer a mathematical phrase involving at least one variable and sometimes numbers and operation symbols

Answers

Answer:

C. a quantity used as a standard measurement

Step-by-step explanation:

A unit is a universally acceptable system of measurement. The system is majorly referred to as the international standard of units i.e (SI) units.

Since physical quantities could be categorize as either fundamental or derived. The use of units in measurement is very essential, because it relates the magnitude measured to the physical quantity.

The units of measurement tells what physical quantity has been measured.

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