MATHEMATICS HIGH SCHOOL

How do i work out:
(y+3) (y-3)
------- = --------- + 2
4 5

Answers

Answer 1
Answer: y=13

(when you have fractions like the one in this problem, you get rid of them by multiplying both sides by the denominator.)

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Please help, math question
Write the following comparison as a ratio reduced to lowest terms. 85 minutes to 8 hours

Graph the following equation using the slope intercept method
3x+5y=-15​

Answers

Answer:

Step-by-step explanation:

The mean of a population being sampled is 64, and and the standard deviation is 6. If the sample size is 50, the standard error of the mean is . (Round off your answer to the nearest hundredth.)

Answers

Given:
mean = 64
standard deviation = 6
sample size = 50

Standard error of the sample mean = standard deviation / √sample size

Standard error = 6 / √50 = 6/7.07 = 0.85

Answer:

See image

Step-by-step explanation:

Plato

A recipe for stew calls for 2 pounds of beef to serve 4 people. Gina wants to serve 8 people. How many pounds of beef should she use?

Answers

For serving 8 peoples, 4 pounds of beef is needed.

What is a linear function? What is a mathematical function, equation and expression?

  • function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.
  • expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.
  • equation : A mathematical equation is used to equate two expressions.

Given is that a recipe for stew calls for 2 pounds of beef to serve 4 people. Gina wants to serve 8 people.

It is given that it requires 2 pounds of beef to serve 4 people.

For 1 people, it will take (2/4) or 1/2 pounds of beef.

So, for serving 8 peoples, (1/2) x 8 or 4 pounds of beef is needed.

Therefore, for serving 8 peoples, 4 pounds of beef is needed.

To solve more questions on functions, expressions and polynomials, visit the link below -

brainly.com/question/17421223

#SPJ6
Gina will need 4 pounds of beef because 2×2=4.

Graph the equation x-y=6

Answers

x-y=6\n\nThe\ slope-intercept\ form:y=mx+b\n\n-y=-x+6\ny=x-6\n\ny-intercept\ (x=0)\ny=0-6=-6\n(0;-6)\n\nx-intercept\ (y=0)\n-x+6=0\nx=6\n(6;\ 0)
x-y-6=0 is the standard form you can graph this by using the y-x intercept form 
x-intercept y=0 
x-6=0 
x=6 
y-intercept, x=0 
-y-6=0 
-y=6
y=-6 
therefore you can plot points on (0,-6) and (6,0) ad connect them together 

(2x -2 1/5 - -4) ÷ -5

Answers

Answer:

(-2x ÷ 5) - (9/5 ÷ 5) = -2/5 * x - 9/25

Step-by-step explanation:

To solve the expression (2x - 2 1/5 - -4) ÷ -5, we need to follow the order of operations, also known as PEMDAS.

1. First, simplify the expression inside the parentheses (-2 1/5 - -4).

To subtract a negative number, we can change it to addition. So, (-2 1/5 - -4) becomes (-2 1/5 + 4).

Next, let's convert the mixed number -2 1/5 to an improper fraction.

-2 1/5 = -11/5

Now we can add the fractions: -11/5 + 4.

To add these fractions, we need a common denominator. The least common denominator for 5 and 1 is 5.

-11/5 + 4/1 = -11/5 + 20/5 = 9/5

Therefore, (-2 1/5 - -4) simplifies to 9/5.

2. Now, let's substitute the simplified expression back into the original expression: (2x + 9/5).

3. Finally, divide the expression by -5: (2x + 9/5) ÷ -5.

To divide by a negative number, we can multiply the expression by -1 and then divide by 5.

(2x + 9/5) ÷ -5 = (-1)(2x + 9/5) ÷ 5

Applying the distributive property, we get:

(-1)(2x + 9/5) ÷ 5 = (-2x - 9/5) ÷ 5

To divide by 5, we can multiply each term by 1/5:

(-2x - 9/5) ÷ 5 = (-2x ÷ 5) - (9/5 ÷ 5)

Simplifying further:

-2x ÷ 5 = -2/5 * x

9/5 ÷ 5 = 9/25

Therefore, the final answer is:

(-2x ÷ 5) - (9/5 ÷ 5) = -2/5 * x - 9/25

Please note that this is the simplified form of the expression, assuming that no specific value for x is given.
the answer is -10x+9/25

Which two numbers add up to be 8 and multiply to be -84

Answers

righ, so negative times positive=negative
negative+positive=positive
thereofr
positive>negative

factor -84 where the negative is smaller ex -12 and 13, not -14 and 10 so

-2 and 42 nope
fast forward
-6 and 14 yes
-6+14=8
so the numbers are -6 and 14
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I'll give 100 pts and brainliest if you answer this!!!thank you for the help boo Perform the operation. Write the answer in standard form. 1. (6 − i) + (9 + 5i) 2. (7 + 3i) + (11 + 2i) 3. (12 + 4i) − (2 − 15i) 4. (3 − 7i) − (3 + 5i) 5. 7 − (2 − 3i) + 6i 6. −16 + (3 + 4i) − 4i 7. 3i(6 − 5i) 8. −2i(8 + 2i) 9. (−5 + i)(8 − 6i) 10. (3 − 6i)(−1 + 7i) 11. (2 + 5i)(2 − 5i) 12. (−3 − i)(−3 + I) 13. (4 + i) 2 14. (5 − 9i) 2 Thank you again <3
Please help, will give brainliest answer
What is 42/4 as a mixed number
A cell phone company orders 500 new phones from a manufacturer. If the probability of a phone being defective is 2.9%, predict how many of the phones are likely to be defective. Round to the nearest whole number