What is the value of x?

Answer:

Answer in explanation

Step-by-step explanation:

The graph of f does not cross the x-axis. We know this because for any value x, we always get that x^2+4 is positive. x^2 is positive or zero ( 0 or greater than 0) for any x but adding 4 to it makes It 4 or greater than 4.

The discriminant is negative.

That is, b^2-4ac is negative.

Upon comparing ax^2+bx+c to x^2+4 we see that a=1, b=0, and c=4..

Plugging those into b^2-4ac gives

(0)^2-4(1)(4)

=0-16

=-16.

Negative discriminant implies two nonreal zeros so it will not cross the x-axis.

(Positive discriminant implies 2 real and zero discriminant imples 1 real.)

Answer:

Yes, they are necessary because it tells you where you need ti start 1st in the equation you are trying to solve.

you can also go by the PEMDAS

Parenthesis

Exponents

Multiply

Divide

Add

Subtract.

that is how i learned it.

Hope this helps

Answer:

1) yes, all of their angles are equal.  (75°, 45°, and 60°)

2) No, their angles are not equal. (42°, 48°, 90°  vs  58°, 32°, 90°)

Step-by-step explanation:

1.

ΔWXY and ΔRST are similar because they have equal angles.

2.

ΔJKM and ΔKLM are not similar because the angles are not equal.

A triangle is a 2-D figure with three sides and three angles.

The sum of the angles is 180 degrees.

We can have an obtuse triangle, an acute triangle, or a right triangle.

We have,

1.

In ΔWXY,

∠X = 75

∠Y = 60

∠W = 180 - (75 + 60) = 180 - 135 = 45

In ΔRST,

∠S = 45

∠R = 60

∠T = 180 - (45 + 60) = 180 - 105 = 75

Now,

We can say that,

ΔWXY and ΔRST are similar because they have equal angles.

2.

In ΔJKM,

∠J = 42

∠M = 45

∠K = 180 - (42 + 45) = 180 - 87 = 93

In ΔKLM,

∠K = 58

∠M = 90

∠L = 180 - (58 + 90) = 180 - 148 = 132

ΔJKM and ΔKLM are not similar because the angles are not equal.

Thus,

ΔWXY and ΔRST are similar because they have equal angles.

ΔJKM and ΔKLM are not similar because the angles are not equal.

Learn more about triangles here:

https://brainly.com/question/25950519

#SPJ2

Answer:

V = 65.97π

Step-by-step explanation:

Answer:

g00gle is a really great source for these questions!

Just put in the information and they do they work!

Step-by-step explanation:

66 inches cubed since you round up .03 decimals!

or 65.97 if you aren't supposed to round

Answer: 0.56

Step-by-step explanation:

The spool holds a total of 36 inches of ribbon and out tis amount, Celeste used 20 inches of ribbon.

Celeste therefore used 20 / 36 of the ribbon available from the stool.

In decimal this is:

= 20 ÷ 36

= 0.5556

= 0.56

Answer:

41-37=4

Answer: 4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

4 7/12 + 5/12 = 4 12/12 which equals 5

Answer:

3 9/12 + (4 7/12 + 5/12) = 3 9/12 + 5

Step-by-step explanation:

Answer:

The equation will be "[tex]y=-2.8 x+75[/tex]".

Step-by-step explanation:

The given values are:

Started with,

= 75 gallons

After 15 hrs,

Tank has,

= 33 gallons

Now,

The slope will be:

=  [tex]\frac{33-75}{15}[/tex]

=  [tex]\frac{-42}{15}[/tex]

=  [tex]-2.8[/tex]

Thus,

The equation is "[tex]y=-2.5x+75[/tex]".

Answer:

14

Step-by-step explanation:

Answer:

What is a Proportion? The four numbers a, b, c and d are known as the terms of a proportion. The first a and the last term d are referred to as extreme terms while the second and third terms in a proportional are called mean terms.

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

Answer:

10 MILES

20 MINUTES

20 MILES

30MINUTES

Answer:

a)30 mph

b.)40 mph

c.)36mph

Step-by-step explanation:

Answer:

(1+1+1)!*1=6

Step-by-step explanation:

f(x)=-5x2+4x-6

f(2)= -5*2*2+4*2-6

f(2)= -20+2

f(2)=-18

Answer:

11

Step-by-step explanation:

2 times 6 is 12 minus 1 is 11

Input interpretation:

2 x - 1 where x = 6

Result:

11

Answer: all the ones that do not have a negative sign in front easy.

Answer:

45 min = 0.75 hours

Step-by-step explanation:

Since Boat A is 6 miles ahead of boat B and has a top speed of 36 miles per hour, the distance it moves in time, t is d = 6 + 36t where 36t is the distance it moves in time, t with speed 36 miles per hour.(36t = 36 miles per hour × t hours)

Also, since Boat B has a top speed of 44 miles per hour, the distance d' it moves in time, t with this speed is

d'= 44t (44t = 44 miles per hour × t hours)

When Boat B catches up with Boat A, their distances are equal. So,

d = d'

6 + 36t = 44t

subtracting 36t from both sides, we have

44t - 36t = 6

simplifying

8t = 6

dividing through by 8, we have

t = 6/8 hours

t = 0.75 hours

t = 0.75 × 60 min

t = 45 min

Answer:

1. 24  2. 20  3. 1.75(I think)  4. 11

Step-by-step explanation:

3 might be incorrect but The others seem more correct than ever :)

Answer:

x = 45

Step-by-step explanation:

Brainliest Please!

Answer:

72

Step-by-step explanation:

Answer:

h = 6

Step-by-step explanation:

Area of a trapezoid formula:

[tex]A=\frac{a+b}{2} *h\\\\h=2*\frac{A}{a+b}[/tex]

Given:

A = 48

a = 4

b = 12

Work:

[tex]h=2*\frac{A}{a+b} \\\\h=2*\frac{48}{12+4} \\\\h=2*\frac{48}{16}\\\\h=2*3\\h=6[/tex]

Answer:

             [tex]x=4\\\\EG=9\\\\ED=18[/tex]

Step-by-step explanation:

[tex]\dfrac{x+5+9}{x+5}=\dfrac{12}{6}\\\\\dfrac{x+14}{x+5}=2\\\\x+14=2(x+5)\\\\x+14=2x+10\\\\14-10=2x-x\\\\x=4\\\\EG=4+5=9\\\\ED=9+9=18[/tex]

Answer:

72%

Step-by-step explanation:

A smart freind of mi e says this is the answer

Answer:

Step-by-step explanation:

Answer:

pretty sure its the second one

Step-by-step explanation:

Answer:

Its false 24>6+9

Step-by-step explanation:

6+9=15

Answer:

h = 1 1/3

Step-by-step explanation:

So when we divide base x height by two we get

Lets multiply 8 x 2

16

So now lets divide by 3

16 / 3 = 1 1/3

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

m= 10,000(1+.05)^t

Step-by-step explanation:

hope this helps:)

Answer:

$9

Step-by-step explanation:

Answer:

$9

Step-by-step explanation:

between 2 and 4 is 3 sandwiches.

There is a point at 3 and 9

(3,9) $9 for 3 sandwiches