MATHEMATICS COLLEGE

Solve the equation
2.5y +6 =4.5y -1

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

4.5y - 1 = 2.5y + 6

2y - 1 = 6

2y = 7

y = 7/2 or 3.5

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at the same time a 15 foot pole casts a 7.5 foot shadow a nearby tree casts an 11 foot shadow how tall is the tree​

Answers

answer: 22

15/7.5 = x/11

cross multiply

7.5x = 165

divide by 7.5 on both sides to get the x alone

7.5x/7.5 = 165/7.5

x = 22

the tree is 22 feet

sorry if it’s wrong

Someone please help me with this question ?

Answers

Asked and answered elsewhere.
brainly.com/question/9495706

Please help image attached

Answers

Answer:

hope it helps mark as brainliest

A consumer advocate wants to collect a sample of jelly jars and measure the actual weight of the product in the container. He needs to collect enough data to construct a confidence interval with a margin of error of no more than 3 grams with 95​% confidence. The standard deviation of these jars is usually 3 grams. Estimate the minimum sample size required.

Answers

Answer:

n=3.8416≅4

So Minimum Sample Size is 4

Step-by-step explanation:

In order to find the minimum sample size, the formula we use will be:

n= (Z^2*S^2)/(E^2)

Where:

n is sample size  

Z is the distribution

S is the standard deviation

E is the  Margin of error

S=3 ,E=3

For Z:

Alpha=1-0.95=0.05

Alpha/2=0.025=2.5%

From Cumulative Standard Distribution Table:

Z at Alpha/2 = 1.960

n= (1.960^2*3^2)/(3^2)

n=3.8416≅4

So Minimum Sample Size is 4

How many times does 4 go into 55
​

Answers

Answer:

13

As a decimal its 13.75

Hope this helps!!

Answer:

13 times

Step-by-step explanation:

4 * 13 is 52 and 55 - 52 is 3 if you add 4 to 52 it would be 56 not 55

What is the inverse of f(x)=(2x+1)2 for x≥−12?

Answers

The inverse of the function will be f⁻¹(x) = [√(x) - 1] / 2 for x ≥ 0.

What is the inverse function?

Let the function f is given as

y = m(x + a) + c

Then the inverse function of the function f will be given by the swapping of x with y and y with x.

The quadratic function is given below.

f(x) = (2x + 1)²

Then the inverse of the quadratic function will be

x = (2f⁻¹(x) + 1)²

2f⁻¹(x) + 1 = √x

2f⁻¹(x) = √x - 1

f⁻¹(x) = [√(x) - 1] / 2 for x ≥ 0

The inverse of the function will be f⁻¹(x) = [√(x) - 1] / 2 for x ≥ 0.

More about the inverse function is given below.

brainly.com/question/2541698

#SPJ2

Answer:

f^-^1(x)=(x)/(4) - (1)/(2) , x\geq -46

Step-by-step explanation:

Theres the inverse
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