Mathematics High School

help appreciated :)

thank you

Help Appreciated :) Thank You

Answers

Answer 1

Answer:

-

He spent 1 hour in total

-

1 hour

There's two Xs on the graph indicating that he had two 1/2 hour hikes, so you just add that up. And that's 1 hour woo

Related Questions

Find the gradient of the line segment between the points (-1,3) and (1,-2).
Give your answer in its simplest form.

Answers

The answer is -5/2, hope this helps you!

Deborah had 3 1/4 yards of ribbon she used 3/8 of a yard for a project how much ribbon does she have left

Answers

She would have 2.875 yards left
Deborah has 2 7/8 yards of ribbon left

If the volume of the pyramid shown is 108in, what is the area of its base? 9 in= height
a. 4 in
b. 12 in
c. 24in
d. 36 in

Answers

Answer: D, 36in.

Step-by-step explanation:

A random sample of size 32 is selected from population X, and a random sample of size 43 is selected from population Y. A 90 percent confidence interval to estimate the difference in means is given as (−1.25,0.87)
.

Consider a change in the sample sizes such that a random sample of size 52 is selected from population X and a random sample of size 63 is selected from population Y. When all other things remain the same, what effect would such a change have on the interval?

Answers

Answer:

The level of confidence will increase.

Step-by-step explanation:

Could be wrong

The change in the sample size will lead to a decrease in the width of the interval.

What is a sample size?

A sample size simply means the number of subjects that are taken from the population for research.

In this case, increasing the sample size will decrease the standard error and therefore, the width of the confidence interval will reduce.

Therefore, as the sample size increases, the interval reduces.

Learn more about sample size on:

https://brainly.com/question/14470673

What is the volume of the composite solid? 6 m 4 m 3 m 4 m 4 m

Answers

Answer:

Please read explanation

Step-by-step explanation:

A picture would be helpful, but I think the answer might be (6x4x3)+(3x4x4). If your shape is made up of many parts, you should find the volume of each shape then add them up to find the total volume. (To find volume, multiply base x height x width) If you could give a picture, it would be very helpful because I don't really know which numbers I should multiply to find volume. I hope this explanation helps, and please comment if you need to ask me anything.

Answer:

Answer is 136 cubic meters

Step-by-step explanation:

Pythagorean Theorem Level 2

Answers

Answer:

10

Step-by-step explanation:

Pyth. Theorem:

a = leg, b = leg, c = hypotenuse

[tex]c = \sqrt{ {a}^{2} + {b}^{2} }[/tex]

The length of the third side

=

[tex]\sqrt{ {5 \sqrt{3} }^{2} + {5}^{2} }[/tex]

=

[tex]\sqrt{75 + 25}[/tex]

=

[tex]\sqrt{100}[/tex]

= 10

-8b-11w+10 simplify this has been a hard problem for me

Answers

Answer:

-8b-11w+10

Step-by-step explanation:

The first term has a variable b

The second term has a variable w

The third term is a constant

They cannot be combined

10
13
16
19
22
25
28
What is the mean?
What is the standard deviation?
What percentage of values should fall between 19 and 22?
Which value has a score of -2?

Answers

Answer:

mean is 19

Step-by-step explanation:

sorry that's all I know

Add all the numbers given:
10+13+16+19+22+25+28=133

Now divide it by 7 since there are 7 numbers

133/7=19

Tommy rides his bike 27 miles in 3 hours. If he rides at a constant speed, select the answer below that is equivalent ratio to the speed he rides. pls help ASAP

Answers

9:1. 9 miles in 1 hour.
First guy is correct 9:1 ratio :)

2. On a scale drawing with a scale of 1 in. to 5 ft, a flagpole is 4 inches tall. How tall is the actual
flagpole?
A. 20in
B. 10in
С. 20ft
D. 200ft

Answers

Answer:

200

Step-by-step explanation:

The temperature at midnight is -5°C and is expected to drop 12°
by sunrise. What is the expected temperature at sunrise?

Answers

Answer:

-17 degrees Celsius.

Step-by-step explanation:

If the temperature at midnight is -5, and it is supposed to drop 12 more by sunrise, the 12 degrees are subtracted from the initial temperature.

-5 - 12 = -17 degrees by sunrise.

Write the equation of the line that passes through (−3,1) and (2,−1) in slope-intercept form

Answers

Answer:

[tex]y=-\frac{2}{5}x-\frac{1}{5}[/tex]

Step-by-step explanation:

The equation of a line is y = mx + b

Where:

m is the slopeb is the y-intercept

First, let's find what m is, the slope of the line.

Let's call the first point you gave, (-3,1), point #1, so the x and y numbers given will be called x1 and y1.

Also, let's call the second point you gave, (2,-1), point #2, so the x and y numbers here will be called x2 and y2.

Now, just plug the numbers into the formula for m above, like this:

[tex]m = -\frac{2}{5}[/tex]

So, we have the first piece to finding the equation of this line, and we can fill it into y=mx+b like this:

[tex]y=-\frac{2}{5}x + b[/tex]

Now, what about b, the y-intercept?

To find b, think about what your (x,y) points mean:

(-3,1). When x of the line is -3, y of the line must be 1. (2,-1). When x of the line is 2, y of the line must be -1.

Now, look at our line's equation so far: [tex]y=-\frac{2}{5}x + b[/tex]. [tex]b[/tex] is what we want, the -[tex]-\frac{2}{5}[/tex] is already set and x and y are just two 'free variables' sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the two points (-3,1) and (2,-1).

So, why not plug in for x and y from one of our (x,y) points that we know the line passes through? This will allow us to solve for b for the particular line that passes through the two points you gave!

You can use either (x,y) point you want. The answer will be the same:

(-3,1). y = mx + b or [tex]1=-\frac{2}{5} * -3 + b[/tex], or solving for b: [tex]b = 1-(-\frac{2}{5})(-3)[/tex].[tex]b = -\frac{1}{5}[/tex]. (2,-1). y = mx + b or [tex]-1=-\frac{2}{5} * 2 + b[/tex], or solving for b: [tex]b = 1-(-\frac{2}{5})(2)[/tex]. [tex]b = -\frac{1}{5}[/tex].

See! In both cases, we got the same value for b. And this completes our problem.

The equation of the line that passes through the points  (-3,1) and (2,-1) is [tex]y=-\frac{2}{5}x-\frac{1}{5}[/tex]

Para reunir dinero para su gira de estudios , los alumnos de un curso deciden vender números de una rifa que se encuentran numeradas del 1 al 100 ¿Cual es la probabilidad de ganar en la rifa si se compran todos los numeros que sean multiplos de 3 o de 5?

Answers

Respuesta:

0.53

Explicación:

Para calcular la posibilidad del evento A: "ganar la rifa comprando todos los números múltiplos de 3 o 5", debemos usar la siguiente fórmula.

P(A) = casos favorables / casos posibles

Evaluemos primero todos los casos que son múltiplos de 3, entre 1 y 100: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99. En total son 33.

Ahora, evaluemos todos los casos que son múltiplos de 3, entre 1 y 100: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100. En total son 20.

El número total de casos favorables es 33 + 20 = 53.

El número de casos posibles es el total de números de 1 a 100, es decir 100.

Luego P(A) = 53/100 = 0.53.

–6z^2− 8z + 8 = 0
sole using the quadratic formula

Answers

Answer:

Simplifying

6z2 + -8z + 1 = 0

Reorder the terms:

1 + -8z + 6z2 = 0

Solving

1 + -8z + 6z2 = 0

Step-by-step explanation:

given m||n,find the value of x ​

Answers

Answer:

8x+5 + 2x+5 = 180

10x+10=180

10x =170 = x = 17

Step-by-step explanation:

Answer:

answer: x = 17 Hope this helps!

2 x 17 + 5 = 39 8 x 17 + 5 = 141

Straight angles are 180 degrees

39 + 141 = 180

So x = 17

I’m just confused help!

Answers

Answer:

Step-by-step explanation:

180

Write the domain of
Y= x+1/
(x+2)(x+10)

Answers

(-∞,-10)∪(-10,-2)∪(-2,∞)

Or

[tex]\left\{x|x\ne-2,-10\right\}[/tex]

Both are correct.

find the area of each figure. Round your answers to the nearest hundredth 11-12​

Answers

Answer:

17 and 18

Step-by-step explanation:

the answer is 17 and 18.....

solve for x. The segments labeled in the picture are the tangets.

Answers

D) 9
Hope it helps u!!!!

Find the area of rectangles with the following dimensions.

a. 2 ¼ yd × ¼ yd =
b. 2 ½ ft × 1 ¼ ft = _____

Answers

Answer:

I think this is the answer I hope I have helped you

Step-by-step explanation:

a

b

Can someone pleaseeee help and if you’re correct i’ll give brainliest

Answers

Answer:

108 mm^3

Step-by-step explanation:

the formula for a right rectangular pyramid is lwh/3, so if you multiply 6, 6, and 9, you'll get 324

324/3=108

You deposit $100 in your bank account. The account earns 2% simple interest in 5 years. How much interest did you earn?

Answers

Answer is $110.4080803 or $110.41 rounded

If i have 23 liters in a bucket and i pour it into 4 smaller buckets, how many liters will each bucket have?? PLS HELP

Answers

5.75 I THINK I’m not sure

Solve for X.

Then, Solve for Y.

Finally, Solve for Z.

Answers

Answer:

x = 6

y = 6[tex]\sqrt{2}[/tex]

z = 12

Step-by-step explanation:

the ratio of sides in a 30-60-90° triangle is, respectively, 1 : [tex]\sqrt{3}[/tex] : 2

therefore, 'x' must have a measure of 6

which means the hypotenuse must have a measure of 12

other triangle is a 45-45-90° triangle whose sides are in a ratio of 1 to [tex]\sqrt{2}[/tex]

this means that 'y' must be 12/[tex]\sqrt{2}[/tex] which is 6[tex]\sqrt{2}[/tex]

'z' must be 6[tex]\sqrt{2}[/tex] · [tex]\sqrt{2}[/tex] = 12

What is the area of the trapezoid below? Use the formula A=h/2 x (b1 + b2)

48 in?
096 in
144 in
288 in

Answers

Answer:

C:144 inches

Step-by-step explanation:

A=h/2 x (b1+b2)

A= 16/2 x (6+12)

A=8x18

A=144 inches

Square tiles measuring 4 inch on each side will be used to tile a 1-foot by 1-foot area. How many of these tiles are needed?

Answers

Answer:9

Step-by-step explanation:

4 inches fits into 12 inches three times. Three rows multiplied by three columns equals 12.

Hope that helps!

Substitution method please help :3

Answers

Answer:

5x-27y=-2

Step-by-step explanation:

-2x+7x=5x

y-3y=-27y

0-2=-2

5x-27y=-2

Please please help find height and volume of pyramid!!!

Answers

Answer:

Height of the pyramid:

h = [tex]\sqrt{22.1^2 - (28/2)^2}[/tex] = [tex]\sqrt{292.41}[/tex] = 17.1 m

Volume:

V = 1/3BhV = 1/3*28²*17.1 = 4468.8 m³

ASAP someone please put these answers in scientific notation.

Answers

for #7 it would be 321,000 and for #8 it would be 0.00159

3 Anthony has
$5 to buy breakfast in the
cafeteria a few times this week. Each
breakfast costs $1.25. Which inequality
represents the relationship between the
number of breakfasts, b, he can buy and
the amount of money he has?
F 5 1.25 + b
G5 < 1.25 + b
H 5 > 1.25b
J 5 < 1.25b

Answers

Answer:

The answer would be letter J

The inequality for total expenditure & number of breakfasts is 5 > 1.25b

Formulation of inequality equation for expenditure & breakfasts

Assumed : Number of breakfasts = b

Number of breakfast meals x Price per breakfast meal = Total Expenditure

Total expenditure should be less or than equal to $1.25

So, 1.25b < 5

It implies that inequality : 5 > 1.25b

To learn more about Inequality, refer https://brainly.com/question/19491153?referrer=searchResults

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