What is the value of the expression below when w=2?
8w^2+2w-3

Answers

Answer 1

Answer: Answer:
33
Step by Step:

8w^2+2w-3

Substitute in the value 2 for w

8(2)^2+2(2)-3

Solve exponents first:

8(4)+2(2)-3

Solve grouping symbols:

32+4-3

Simplify the equation:

33

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What is 9x as a variable

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation: regardless 9 is a constant term nd x is variable if x is not determined then it vanishs the constancy of 9x, so variable.

Write the point-slope form of the equation of the line that passes through (3, -3) and is perpendicular to y = 13x.

Answers

Answer:

y=-1/13x-36/13

Step-by-step explanation:

1.a.)In a two-digit number, the units digit is twice the tens digit. If the number is doubled, it will be 12 more than the reversed number. Find the number.
b.)Eight times the sum of the digits of a certain two-digit number exceeds this number by 19. The tens digit is two less than the units digit. Find the number.
c.)In a two-digit number, the units digit is twice the tens digit. If the number is doubled, it will be 9 more than the number reversed. Find the number.
ALL DUE IN 7 MIN! HELP NOW OR NEVER

Answers

x: the unit digit
y: the tens digit

The unit digit is twice the tens digit so:
x=2y

The two digit number:
10y+x

The two digit number doubled:
2(10y+x)

The reversed number:
10x+y

So:
2(10y+x)=10x+y+12

substitute x for 2y

2(10y+2y)=10(2y)+y+12

24y=21y + 12

3y=12
y=4

x=2y=2*4=8

So the number is 48.

xy is the number

a.
unit digit is y
tens is x
units is twice tens digit
y=2x
if it is doubled, it will be 12 more than reversed
20x+2y=12+10y+x
20x+4x=12+20x+x
3x=12
x=4
y=2x
y=2(4)
y=8
48 is the number

b. 8 times sum of digis is bigger than that number by 19
8(x+y)=19+10x+y
x=y-2

8(y-2+y)=19+10(y-2)+y
16y-16=19+10-20+y
y=3
x=y-2
x=3-2
x=1
the number is 13

c.
y=2x
2(10x+y)=9+10y+x
2(10x+2x)=9+20x+x
x=3
y=2x
y=3(3)
y=6

the number is 36

a. 48
b. 13
c. 36

Create a graph of the combined function h(x) = f(x)/ g(x) in which f(x) = x - 6 and g(x) = x + 6.On your graph, show the graphs of f(x) and g(x) also.

Answers

Answer:

In the picture attached the graph of h(x) = f(x)/ g(x) = (x - 6)/(x + 6) is shown. Notice that there is no h(x) for x = -6. The graph was made with a computer software

f(x) = x - 6 and g(x) = x + 6 are also included. These two functions are continuous for all real numbers, despite that h(x) is not continuous in x = -6

The Graphs of tan, cot, csc, sec. ... The graphs of y = tan(x) and y = cot(x) have the same x-values for y-values of 1 and ...

A cheetah can run at top speed for only about 20 seconds. If an antelope is too far away for a cheetah to catch it in 20 seconds, the antelope is probably safe. Your friend claims an antelope running 60 feet per second will not be safe if the cheetah running at 90 feet per second is 650 feet behind it. Is your friend correct?

Answers

Your friend is not correct.

It takes the cheetah Approximately 21.67 seconds to run at 90 ft/s to reach the moving antelope.

Given that, a cheetah can run at top speed for only about 20 seconds and the top speed of a cheetah is 90 feet per second.

What is the formula to find the speed of an object?

The formula to find the speed of an object is Speed = Distance / Time.

From the given question in 20 seconds cheetah will cover a distance of:

20 × 90 = 1800 feet

In 20 seconds cheetah will cover a distance of 1800 feet.

It is given that the antelope runs 60 feet per sec

That means in 20 seconds antelope will cover a distance of:

20 × 60 = 1200 feet

In 20 seconds antelope will cover a distance of 1200 feet.

Now add the distance ran initially, because the antelope was ahead of the cheetah from 650 feet.

1200 feet + 650 feet = 1850 feet

But the maximum distance cheetah can cover is 1850 feet. Thus the antelope is still 50 ft ahead of the cheetah.

Therefore, the antelope is probably safe.

Hence, your friend is not correct.

The speed of a cheetah is 30 feet per second more than antelope.

Cheetahs need to cover 50 feet to catch antelope.

So, 50/30 =1.67 seconds

20 seconds + 1.67 second = 21.67 seconds

Therefore, it takes the cheetah approximately 21.67 seconds to run at 90 ft/s to reach the moving antelope.

To learn more about the speed visit:

brainly.com/question/7359669.

#SPJ2

21.7 Seconds Your Friend is Incorrect 90t=650+X 60t=x 90t=60t×650 -60. -60 30t+650 ÷30 ÷ 30 21.7 T= time

Darnell brought 7.7 kilograms of blueberries at the farmers market.1 Each basket of blueberries weighed 0.35 kilogram. The cost of each basket of blueberries was$1.79. What was the total cost of the blueberries Darnell purchase