Help me please please

Answer:

y = 10

Step-by-step explanation:

22y + 100 = 25y + 70

-22y            - 22y

100 = 3y + 70

-70           - 70

30 = 3y

y = 30 ÷ 3

y = 10

Answer:

y=10

Step-by-step explanation:

Answer:

Answer:

102.5, 103.5

Step-by-step explanation:

a+a+1=206

2a+1=206

2a=205

a=102.5

103.5

I think there is a bug here. They can't be whole numbers.

Step-by-step explanation:

Answer:

y = - 2x + 13

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (3, 7) and (x₂, y₂ ) = (5, 3)

m = [tex]\frac{3-7}{5-3}[/tex] = [tex]\frac{-4}{2}[/tex] = - 2, thus

y = - 2x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (3, 7), then

7 = - 6 + c ⇒ c = 7 + 6 = 13

y = - 2x + 13 ← equation of line

Step-by-step explanation:

the 1th 3th and 5th are not functions the rest are

Answer:

I rlly don’t k srry

I be getting stuck to

Step-by-step explanation:

Answer : 12.8

Step-by-step explanation: if u round the 7 it is going to be eight because it is bigger than four

Answer:

0

Step-by-step explanation:

brainliest plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Answer:

15

Step-by-step explanation:

5+5+5= 15

5 x 3 = 15

Can u help me now pls. Tap on my profile and u will find my most recent question. Answer it correctly and ill give u brainliest pls and ty. <3

Answer: what is the other number?

Step-by-step explanation:

Answer:

A quotient would be division and -4 would be a negative number. (non-positive.) hope this helps.

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

dada

Answer:

Geosphere, Hydrosphere, Lithosphere, Biosphere

Step-by-step explanation:

Hope this helps!! :)

Answer:

Hence, option 'd' is correct.

Step-by-step explanation:

Unlike the expected frequency which is obtained based on prediction, the observed frequency is the actual frequency that is determined from the experiment.

Therefore, we conclude that

Hence, option 'd' is correct.

Answer:

the answer is 3

Answer:

3

Step-by-step explanation:

( [tex]\frac{1}{4}[/tex] + [tex]\frac{5}{4}[/tex] )² + [tex]\frac{3}{4}[/tex] = ( [tex]\frac{6}{4}[/tex] )² + [tex]\frac{3}{4}[/tex] = ( [tex]\frac{3}{2}[/tex] )² + [tex]\frac{3}{4}[/tex] = [tex]\frac{9}{4}[/tex] + [tex]\frac{3}{4}[/tex] = [tex]\frac{12}{4}[/tex] = 3

2 hours. It's extremely simple this is elementary grade, he needs to travel 25 miles and he's going 12.5 miles an hour, 12.5 x 2 = 25 So in 2 hours he reaches his destination.

The time it will take will be 5 hours.

"The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity. Ratios can be classified into two types. One is part to part ratio and the other is part to whole ratio. The part-to-part ratio denotes how two distinct entities or groups are related. For example, the ratio of boys to girls in a class is 12: 15, whereas, the part-to-whole ratio denotes the relationship between a specific group to a whole. For example, out of every 10 people, 5 of them like to read books. Therefore, the part to the whole ratio is 5: 10, which means every 5 people from 10 people like to read books."

The speed of the bike = 12.5 miles/hour

So, the distance will be = [tex]25/2 * 5 = 125/2[/tex]

Time taken = [tex]125/2 * 1/12.5[/tex]

= 5 hours

Hence, the time taken to get to the zoo = 5 hours

To know more about ratio here

https://brainly.com/question/13419413

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Answer:

The width and length of rectangle is 12.728 m

Step-by-step explanation:

Let the length of the rectangle = L

let the width of the rectangle = W

The subjective function is given by;

F(p) = 2(L + W)

F = 2L + 2W

Area of the rectangle is given by;

A = LW

LW = 162 ft²

L = 162 / W

Substitute in the value of L into subjective function;

[tex]f = 2l + 2w\\\\f = 2(\frac{162}{w} )+2w\\\\f = \frac{324}{w} + 2w\\\\\frac{df}{dw} = \frac{-324}{w^2} +2\\\\[/tex]

Take the second derivative of the function, to check if it will given a minimum perimeter

[tex]\frac{d^2f}{dw^2}= \frac{648}{w^3} \\\\Thus, \frac{d^2f}{dw^2}>0, \ since,\frac{648}{w^3} >0 \ (minimum \ function \ verified)[/tex]

Determine the critical points of the first derivative;

df/dw = 0

[tex]\frac{-324}{w^2} +2 = 0\\\\-324 + 2w^2=0\\\\2w^2 = 324\\\\w^2 = \frac{324}{2} \\\\w^2 = 162\\\\w= \sqrt{162}\\\\w = 12.728 \ m[/tex]

L = 162 / 12.728

L = 12.728 m

Therefore, the width and length of rectangle is 12.728 m

Answer:

The equation of the line is y = 7/2x + 8

Step-by-step explanation:

The equation of the line is in the form y = mx + b, where m is the slope and b is the y-intercept.  To find m, you just have to subtract the two points from each other.

[tex]\frac{8 - 1}{0 - (-2)}[/tex]   = 7/2

The y - intercept always has an x-value of 0, so the y-intercept would be 8.

So, the equation is y = 7/2x + 8

Answer:

The answer is d

Step-by-step explanation:

The step expression 3 is incorrect, there should be -3 in place of +3.

An expression in maths, a statement involving at least two different numbers (known or unknown) and at least one operation.

Given is an expression, 1/2{-4+8+(-6)}

On solving, we get,

1/2{-4+8+(-6)}

= 1/2(-4) + 1/2(8) +1/2(-6)

= 1/2{-4+(-6)} + 4

= -2+4-3

When we will divide, -6 by 2, we will get -3 and Sarah used +3 which made her expression 3 incorrect.

Hence, The step expression 3 is incorrect, there should be -3 in place of +3.

For more references on expression, click;

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Answer:

Step-by-step explanation:

Graph of a parabola showing where the x and y intercepts, vertex, and axis … Determine the vertex, axis of symmetry, zeros, and y-intercept of the parabola shown below. … We can use the general form of a parabola to find the equation for the axis. Therefore the domain of any quadratic function is all real numbers.

Answer:

Step-by-step explanation:

X- intercept(s)

vertex

Axis of symmetry

Answer:

5x=3x+4

5x-3x=4

2x=4

x=2

Step-by-step explanation:

First subtract 3x on both side of equation. 2x=4

Divide x=4

x=4

Answer:

to solve 5x=3x+4, the first thing you would do is subtract 3x from both sides. this will leave you with 2x=4. so now you have to divide both sides by 2 which would leave you with x=2. so the solution for this equation is 2.

Step-by-step explanation:

Answer:

i think the answer is 18.15

Step-by-step explanation:

Answer:

Altogether James walked [tex]4\frac{4}{35}[/tex] miles.

Step-by-step explanation:

The question involves mixed fractions. Mixed fractions are first converted into proper fractions and then any operation can be performed on them.

Given

Distance of first walk = [tex]3\frac{2}{5}[/tex] of a mile

Distance of second walk = 5/7

In order to find how much he walked altogether, we have to find the sum of both fractions.

[tex]Total\ distance = 3\frac{2}{5}+\frac{5}{7}\\= \frac{17}{5}+\frac{5}{7}\\=\frac{17*7}{5*7} + \frac{5*5}{7*5}\\=\frac{119}{35} + \frac{25}{35}\\=\frac{119+25}{35}\\=\frac{144}{35}\\=4\frac{4}{35}[/tex]

Hence,

Altogether James walked [tex]4\frac{4}{35}[/tex] miles.

Answer: I believe it’s B

Answer:

Time = 82. 9 mins

Step-by-step explanation:

Given the following data;

Distance = 3.2 miles

Time = 2.4 hours to minutes = 2.4 * 60 = 144 mins

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the formula;

[tex]Speed = \frac{distance}{time}[/tex]

Substituting into the equation, we have;

[tex]Speed = \frac{3.2}{144}[/tex]  

Speed = 0.0222 miles/min

Now, to find the time to walk 1.84 miles;

[tex]Time = \frac{distance}{speed}[/tex]

[tex]Time = \frac{1.84}{0.0222}[/tex]

Time = 82.9 mins (to 1 decimal point).

Method II

Let the new time = x

3.2 miles = 2.4 hours

1.84 miles = x hours

Cross-multiplying, we have;

3.2x = 2.4 * 1.84

3.2x = 4.416

x = 4.416/3.2

x = 1.38 hours

Now, we would convert the hours to minutes;

x = 1.38 * 60

x = 82.8 mins.

Answer:

Q3 = 37.5

Step-by-step explanation:

Place the data items in order from least to greatest

5, 8, 10, 20, 25, 30, 35, 40, 45

Find the number in the middle 25

Then take the number on the right, take the two numbers in the very middle add them together and divide by 2. 35+40 = 75/2 =37.5

If you don't have to show your worK:

TI84 calculator [stat][edit]input data [stat][calc][1-var stats]{list:L1][enter][enter]scroll down till Q3

Answer:

the square root of 3 is 1.73

Step-by-step explanation:

The square root of 3 lies between 1 and 2

Answer: 24 divided by 0.20= 120

Step-by-step explanation:

2/3 of a minute is 0.20 seconds so to see how many questions to do you have to take 24 and divide it by 0.20 (basically see how many times 2/3 of a minute goes into 24)

Answer:

a?

Step-by-step explanation:

Answer:

f(x)= -(x+1)^2 -2

Step-by-step explanation:

f(x)=(x-h)^2 +k; (h,k)

Then you would substitute the x and y of the coordinate and solve.

-6= -(1+1)^2 -2

-6= -(4) -2

-6 = -6