Just do these two problems for me and I’ll be so happy

Answer:

1 x 1/2 = 1/2

1/2 x 1/2 = 1/4

1/2 x 1/2 = 1/4

Step-by-step explanation:

Answer:

[tex]\sf z = -16.35[/tex]

formula:

[tex]\sf z = \dfrac{s-p}{\sqrt{\dfrac{p(1-p)}{n} } }[/tex]

Here s = 0.3, p = 0.5, n = 1671

solve:

[tex]\rightarrow \sf z = \dfrac{0.30-0.5}{\sqrt{\dfrac{0.5(1-0.5)}{1671} } }[/tex]

[tex]\rightarrow \sf z = \dfrac{-0.2}{\sqrt{\dfrac{0.25}{1671} } }[/tex]

[tex]\rightarrow \sf z = -16.35[/tex]

Taking into account the definition of a system of linear equations, the solution t=14 represents a viable time that the trains are side by side.

A system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.

Solving a system of equations consists of finding the value of each unknown so that all the equations of the system are satisfied. That is to say, the values ​​of the unknowns must be sought, with which when replacing, they must give the solution proposed in both equations.

The system of equations to be solved is

[tex]\left \{ {{y=14t^{2} } \atop {y=96t+1400}} \right.[/tex]

There are several methods to solve a system of equations, it is decided to solve it using the substitution method, which consists of clearing one of the two variables in one of the equations of the system and substituting its value in the other equation.

In this case, substituting the first equation in the second you get:

14t²= 96t +1400

Solving:

14t²- 96t -1400=  0

Being this a quadratic function of the form ax² + by +c, then it can be solved by: [tex]x1,x2=\frac{-b+-\sqrt{b^{2} -4ac} }{2a}[/tex]

In this case, being a=14, b=-96 and c=-1400, the equation is solved by:

[tex]t1=\frac{-(-96)+\sqrt{(-96)^{2} -4x14x(-1400)} }{2x14}[/tex]

[tex]t1=\frac{96+\sqrt{9216 +78400} }{28}[/tex]

[tex]t1=\frac{96+\sqrt{87616} }{28}[/tex]

[tex]t1=\frac{96+296}{28}[/tex]

[tex]t1=\frac{392}{28}[/tex]

t1=14

and

[tex]t2=\frac{-(-96)-\sqrt{(-96)^{2} -4x14x(-1400)} }{2x14}[/tex]

[tex]t2=\frac{96-\sqrt{9216 +78400} }{28}[/tex]

[tex]t2=\frac{96-\sqrt{87616} }{28}[/tex]

[tex]t2=\frac{96-296}{28}[/tex]

[tex]t2=\frac{-200}{28}[/tex]

t2= -7.14

Since time cannot be a negative value, the solution t=14 represents a viable time that the trains are side by side.

Learn more about system of equations:

brainly.com/question/14323743

brainly.com/question/1365672

brainly.com/question/20533585

brainly.com/question/20379472

Answer:

-3/5

Step-by-step explanation:

I used the KCF, or keep, change, flip, method for this.

The original problem is -2/5 divided by -2/3

We keep the first fraction - -2/5

change the sign to multiplication

and flip the second fraction - 3/2

so, -2/5 x 3/2

and then check for where we can simplify, we can in this instance:

-1/5 x 3/1

and then multiply across

-3/5

Answer:

f(x)=-5x+1x=−5x+1, find f(6)

f(6)= -5(6)+1(6)=-5(6)+1

F(6)=-24,-29

Answer:

we need the figure, where is it

Step-by-step explanation:

It is not a solution because the point falls outside the shaded region, if you were to plugin the point it would return a false statement

Answer:

Step-by-step explanation:

Sum of interior angles of a triangle is 180°.

Find the missing angle:

[tex]\small\bold\green{[Sum \: of \: interior \: angles \: of \: a \: triangle \: is \: 180°]}[/tex]

Lets , Find the missing angle :

↪ m∠A + m∠B + m∠C = 180°

↪ 33° +102° + m² = 180°

↪ 135° + m∠C = 180°

↪ m∠C = 180° - 135°

↪ m∠C = 45°

Step-by-step explanation:

3/4 if the actual length of the shorter segment is 120 ft.

what do I need to multiply 3/4 with to get 1/1 ?

3/4 × x = 1

3 × x = 4

x = 4/3

you feel the aha moment ?

so, when I multiply 120 ft by 4/3 I reverse the "distraction" of showing me only 3/4 of the real thing, and I get the full length of the shorter segment.

120 × 4/3 = 40 × 4 = 160 ft.

and now we know the longer segment is 12 ft longer.

so, it is

160 + 12 = 172 ft long.

so, the equation we just solved was

y = 4/3 × x + 12

with y being the length of long piece, x being the distorted (by factor 3/4) length of the short piece. and 12 is the overall difference between them.

Answer:

134

Step-by-step explanation:

938÷7=134

Answer:

7.21 units

Step-by-step explanation:

Given points are: (-6, 6) and (-10, 0)

[tex]distance = \sqrt{ {( - 6 + 10)}^{2} + {(6 - 0)}^{2} } \\ \\ = \sqrt{ {(4)}^{2} + {(6)}^{2} } \\ \\ = \sqrt{ 16 + 36 } \\ \\ = \sqrt{ 52 } \\ \\ = 7.21 \: units[/tex]

Using proportions, it is found that the expression that represents the current value of the artwork is given by:

A 1.4V

A proportion is a fraction of a total amount.

In this problem, the initial value was of V, which increased by 40%. Thus, the current value of V is 100% + 40% = 140% of the original, which is equivalent to a proportion of 1.4, that is: 1.4V.

Hence, option A represents the current value of the artwork.

More can be learned about proportions at https://brainly.com/question/24372153

The equation that represents the linear function is y = 2x.

A linear equation is in the form:

y = mx + b

Where y, x are variables, m is the rate of change and b is the y intercept.

Let us assume that from the table, we get the data with points (0, 0) and (2, 4). Hence:

[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-0=\frac{4-0}{2-0} (x-0)\\\\y=2x[/tex]

The equation that represents the linear function is y = 2x.

Find out more on Linear equation at: https://brainly.com/question/13763238

Answer:

Step-by-step explanation:

answer is -10

»(4x - 2y)(3x + 5y)

»4x(3x + 5y) + (-2y)(3x + 5y)

»12x² + 15xy - 6xy - 10y²

»12x² + 9xy - 10y²

so, ABC is :

Answer:

7 1/7

Step-by-step explanation:

24 hours  = 1 day

7 days = 1 week

⇒ number of hours in 1 week = 24 x 7 = 168

⇒ number of weeks in 1200 hrs = 1200 ÷ 168 = 7 1/7

Answer:

34 degrees

Step-by-step explanation:

sin(x) = opp/hyp = 9/16

So, x = 34.22 degrees

After rounding to the nearest degree, x = 34 degrees

Answer:

the sum of all angles in triangle is equal to 180°

Step-by-step explanation:

1 = 2 = 3 = 4 = 90° (360° / 4)

9 = 180° - 21° - 90° = 69°

10 = 180° - 59° - 90° = 31°

5 = 59°

6 = 21°

7 = 9 = 69°

8 = 10 = 31°

Answer:

It is Right angle triangle.

Also it shows 90 degree angle at E.

I think it will help you.

Answer:

[tex]\frac{5a^4b^5}{9}[/tex]

Step-by-step explanation:

[tex]\frac{15a^1^6b^1^1}{(3a^4b^2)^3}[/tex]

[tex]=\frac{15a^1^6b^1^1}{27a^1^2b^6}[/tex]

[tex]=\frac{15a^4b^5}{27}[/tex]

[tex]=\frac{5a^4b^5}{9}[/tex]

Answer = [tex]=\frac{5a^4b^5}{9}[/tex]  

Answer:

it is so hard it's optional math bro I tried much

Step-by-step explanation:

hope others can give answers

Answer:

cat's price = $15

dog's price = $25

Answer:

5/8

Step-by-step explanation:

1/4=2/8

2/8+3/8=5/8

Answer:

-2.964

Step-by-step explanation:

Answer:

a = 70°

b = 80°

Step-by-step explanation:

Angles on a straight line add up to 180°

⇒ a + 110 = 180

⇒ a = 180 - 110

⇒ a = 70°

The sum of the interior angles of a quadrilateral is 360°

⇒ a + b + 130 + 80 = 360

⇒ 70 + b + 130 + 80 = 360

⇒ b + 280 = 360

⇒ b = 360 - 280

⇒ b = 80°

Answer:

2x+4 or 2(x+2)

Step-by-step explanation:

I'm not very confident that I can give you a clear explanation while typing, but you can factor the equation which is one way how to do this.

2x^2 + 10x+12 = 2(x^2+5x+6)

                       = 2(x(x+3) + 2(x+3))

                       = 2(x+3)(x+2)

With that answer, you divide it by x+3 and get 2(x+2) or 2x+4

Answer:

A parallelogram is a four sided shape, so this means that the total sum of interior angles is equal to 360 degrees.

It also has two sets of matching angles, therfore if it says one is 155 degrees it must have one more that is also 155 degrees.

This means 2 x 155= 310, 360 - 310 = 50 degrees remaining. This 50 degrees would be shared between the remaining two angles as they must be a matching pair also. 50 / 2=25.

This parallelogram has two angles of 155 and two of 25. Degrees.