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3 years ago

A local maximum of the function f(x) occurs for which x-value? -4 -3 -2 -1

Mathematics

2 answers:

Naddika [18.5K]3 years ago

8 0

My guess is -1 because when a x value don’t got a number replace it with a 1

julia-pushkina [17]3 years ago

8 0

I think the answer would be -1 because normally you would place a 1 in front of x if it was negative, so I’m assuming you would do the same if it was -x and the one would just go after the negative symbol

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Brian can lay a slab of concrete in 6 hours, while Greg can do it in 4 hours. If Brian and Greg work together, how long will it

anastassius [24]

Answer:

2 2/5 hours

Step-by-step explanation:

In 6 hours Brian can lay 1 slab of concrete

dividing both side by 6

in 6/6 hours Brian can lay 1/6 slab of concrete

Thus, in 1 hour Brian can lay 1/6 slab of concrete

In 4 hours Greg can lay 1 slab of concrete

dividing both side by 4

in 4/4 hours Greg can lay 1/4 slab of concrete

Thus, in 1 hour Greg can lay 1/4 slab of concrete

Thus, total part of slab laid by both in 1 hour when they work together

1/6 + 1/4 = 4+6/(6*4) = 10/24 = 5/12

5/12 of slab of concrete is laid by both of them in 1 hour

time taken to lay 5/12 of slab = 1 hour

dividing both side by 5/12

time taken to 5/12/ 5/12 of slab = 1/5/12 hour = 12/5 hours

time taken to 1/1 of slab = 12/5 hours = 2 2/5 hours

Thus,

it takes 2 2/5 hours to lay the full slab of concrete when Brian and Greg work together,

5 0

3 years ago

In official NHL hockey puck is shaped like a cylinder with a diameter of 3 inches and a volume of 7.1 in.³. What is the height o

Natali [406]

Answer:

1 inch

Step-by-step explanation:

The formula for the volume of a cylinder:

V = πr²h, where r=radius and h = height

Using 7.1 for 'V' and 1.5 for 'r' (1/2 of the diameter), we can fill in the values and solve for 'h':

7.1 = π(1.5)²h or 7.1 = 7.065h

h = 1 inch

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3 years ago

What is a system of equations for the following situation? There is a total of 40 questions on a test. Some questions are multip

Elden [556K]

First we define the variables:

m = multiple choice questions

s = short answer questions

Next we need to satisfy 2 conditions:

1) There are a total of 40 questions. We can represent this mathematically using the variables I defined:

$m+s=40$

2) The multiple-choice questions are worth 2 points and the short-answer are worth 4 points but they need to total 100 points. This can also be represented mathematically:

$2m+4s=100$

By satisfying the conditions provided we were able to create the 2 equations!

$m+s=40$

$2m+4s=100$

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3 years ago

The solution to tanx=3.284 is a linear measurement. true or false

Romashka [77]

False x is an angle Answer

7 0

3 years ago

Read 2 more answers

How do i find the slope

sveta [45]

Answer:

slope = - 7

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y - 4 = - 7(x - 6) ← is in point- slope form

with slope m = - 7

4 0

3 years ago