1.
The cos120" is equal to

Answer:

neither

Step-by-step explanation:

Lucas and Tony were trying to solve the equation:

x^2=16x+25x  

2

=16x+25x, squared, equals, 16, x, plus, 25

Lucas said, “The x^2x  

2

x, squared term is isolated, so I"ll take the square root of both sides and solve.”

Tony said, “I'll solve using the quadratic formula with a=1a=1a, equals, 1, b=16b=16b, equals, 16, and c=25c=25c, equals, 25.”

Whose solution strategy would work?

Neither Lucas's approach for the solution is correct nor Tony's approach.

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
Lucas approch,
x² = 16x + 25
√x² = √16x + 25
x = √16x + 25

No further solution by Lucas,

Now,
Toy's approach,
for equation,

x² = 16x + 25

Using quadratic formula he figured it out a = 1, b = 16 ad c = 25, which is wrong from the equation a = 1, b = -16, and c = -25.

Thus, Neither Lucas's approach for the solution is correct nor Tony's approach.

Learn more about simplification here:

https://brainly.com/question/12501526

#SPJ5

Answer:

The cities are 60 miles apart

Step-by-step explanation:

[tex]4*15=60[/tex]

Answer:

A ∪ B = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}

A ∩ B = {5}

Step-by-step explanation:

A ∪ B means all the elements in sets A and B without repetition

A ∩ B means the common elements in the two sets A and B

∵ Set A = {5, 6, 7, 8, 9, 10}

∵ Set B = {2, 3, 4, 5, 11, 12, 13}

→ To Find A ∪ B, write all the elements in the two sets but don't

   repeat the common element

∵ 5 is a common element in the two sets

∴ Don't repeat it in A ∪ B

∴ A ∪ B = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}

→ To find A ∩ B, write the common elements in the two sets

∵ 5 is the only common element in the two sets

∴ A ∩ B = {5}

Answer:

I think that the front one would be D) 20

Step-by-step explanation:

It is 4 times bigger than the smaller one so it is 20

Answer:

Step-by-step explanation:

5. -3x^(2)+3xy-4xz

If you factor = -x(3x-3y+4z)

x^yz+xy^2z+xyz^2

xyz(x+y+z)

x^2y-xy^2+x^2y^2

xy(x-y+xy)

6. 14a^2-28a^2b^2+21a^4

-7a^2(4b^2-3a^2-2)

7. a^4b-6a^2b^2+3ab^3

ab(a^3-6ab+3b^2)

Answer:

charges for the first hour = $7.55

charges for each additional hour = $1.55

c = 1.55h + 7.55

Step-by-step explanation:

Let

x = charges for the first hour

y = charges for each additional hour

x + 2y = 10.65 (1)

x + 5y = 15.30 (2)

Subtract (1) from (2)

5y - 2y = 15.30 - 10.65

3y = 4.65

y = 4.65/3

= 1.55

y = $1.55

Substitute y = 1.55 into

x + 2y = 10.65

x + 2(1.55) = 10.65

x + 3.10 = 10.65

x = 10.65 - 3.10

= 7.55

x = $7.55

c = 1.55h + 7.55

for this problem the answer is 324

Answer: 1, 3

Step-by-step explanation:

Answer:

x=10

Step-by-step explanation:

Answer:

x = 10

Step-by-step explanation:

3x + 6 = 36

3x = 30

x = 10

Step-by-step explanation:

i wanna help but i cant see can you copy and paste the question

Answer:

Step-by-step explanation:

y=5x-2

slope of the line is 5 because if we compare to

y=mx+b where m is the slope we see m=5

Points (0,-2), (2,8), (4,18)

slope between the points (0,-2), (2,8)

m=(y2-y1)/(x2-x1) = -2-8/0-2 = -10/-2 = 5

slope between the points (4,18), (2,8)

m=(y2-y1)/(x2-x1) = 18-8/4-2 = 10/2=5

slope between the points (4,18), (0,-2)

m=(y2-y1)/(x2-x1) = 18+2/4-0= 20/4 =5

Answer:

The greatest common factor is 21,

Step-by-step explanation:

Find the prime factors of each term in order to find the greatest common factor (GCF).

Answer:

880

Step-by-step explanation:

Answer:

880

Step-by-step explanation:

Answer:

2 1/10 kilograms

Step-by-step explanation:

2 9/10 minus 4/5

Make the 4/5 have the same denominator as 9/10

2 9/10 minus 8/10

Subtract

2 1/10

PLZ MARK ME BRAINLIEST.

Answer:

2 1/10

Step-by-step explanation:

2 9/10 - 4/5. You need the minus because it says lost. That means you have to take away which is the same as minus.

The 4/5 have the same denominator as 2 9/10. This reason is because the denominator of 5 is lesser than the denomintor of 10. You don't have to do this step, but it will make it easier to solve.

2 9/10 - 8/10 = 21/10 OR 2.1 OR 2 1/10. Subtract them both to get the answer.

Answer:

250 yards per minute

Step-by-step explanation:

We just divide 750/3 to get 250, so our unit rate would be 250 yards per minute.

Answer:

C?

Step-by-step explanation:

I could be wrong but I think that's the answer

Answer:

I'm not sure but the answer i have is C

Answer

B the answer is B

Step-by-step explanation:

Answer:

True

Step-by-step explanation:

The perpendicular bisector of the opposite side to the vertex bisects the angle at the vertex into two equal parts and also bisects the triangle into two equal parts.

Let A be the angle at the vertex, then assume that the angle is an isosceles triangle with base angles B.

We need to show that A = 180 - 2B for an isoceles triangle

The perpendicular bisector bisects A into two so the new angle in the vertex one half of the bisected triangle is A/2.

Since this half triangle is a right-angled triangle, the third angle in it is 90.

So, A/2 + B +  90 = 180 (Sum of angles in a triangle)

subtracting 90 from both sides, we have

A/2 + B + 90 - 90 = 180 - 90

A/2 + B = 90

subtracting B from both sides, we have

A/2 + B = 90

A/2 = 90 - B

multiplying through by 2, we have

A = 2(90 - B)

A = 180 - 2B

Since A = 180 - 2B, then our triangle is an isosceles triangle.

Answer:

A GENERAL NOTE: CHARACTERISTICS OF THE GRAPH OF THE PARENT FUNCTION [tex]f(x)=b^{x}[/tex]

-It’s a one-to-one function

-The graph passes through y-intercept of the point (0,1)

-x-intercept: none

-The domain is all real numbers: (−∞,∞)

-The range is y > 0 or (0,∞)

-The graph is increasing

-The graph is asymptotic to the x-axis as x approaches negative infinity

-Horizontal asymptote: y=0

-The graph increases without bound as x approaches positive infinity

-Increasing if b > 1

-Decreasing if b < 1

-The graph is continuous

-The graph is smooth

Hope this helps! :)

Answer:

Step-by-step explanation:

Least common denominator of 5 , 9 , 3 = 45

[tex]\frac{2}{5}+\frac{4}{9}-\frac{2}{3}=\frac{2*9}{5*9}+\frac{4*5}{9*5}-\frac{2*15}{3*15}\\\\=\frac{18}{45}+\frac{20}{45}-\frac{30}{45}\\\\= \frac{18+20-30}{45}\\\\= \frac{8}{45}\\\\[/tex]

Least common denominator of 2, 5 = 10

[tex]\frac{5}{2}-\frac{3}{5}=\frac{5*5}{2*2}-\frac{3*2}{5*2}\\\\=\frac{25}{10}-\frac{6}{10}\\\\=\frac{25-6}{10}\\\\= \frac{19}{10}[/tex]

[tex](\frac{2}{5}+\frac{4}{9}-\frac{2}{3})*(\frac{5}{2}-\frac{3}{5})=\frac{8}{45}*\frac{19}{10}\\\\= \frac{4*19}{45*5}\\\\= \frac{76}{225}[/tex]

Answer:

12.6

Step-by-step explanation:

3.5 x 3600 divided by 1,000 = 12.6 kilograms

See attachment for math work and answer.

Answer:

4

Step-by-step explanation:

Degree is the highest power of the variable in the polynomial

Answer:

-4/21

Step-by-step explanation:

Answer:

-4/21

Step-by-step explanation:

Keep switch flip method. Keep -3/7, switch division to multiplication, and flip 9/4 to become 4/9. then multiply straight through

-3/7 x 4/9 = -12/63

which simplifies to -4/21

Answer:

for yellow gummy bears, 3 to 11, and for Red, 4 to 11.

Step-by-step explanation:

I think this is right, I did this a few years ago, I hope this helps!