All categories

3 years ago

PLZ HELP PLZ

Mathematics

2 answers:

Step2247 [10]3 years ago

3 0

The single digit to the left of the vertical line is the tens units, the numbers to the right are the ones.

The scores above 64, would be 65, 73, 74, 77, 87, 88, 91, 93, 93, 97, 99, 99

A total of: 12 scores.

neonofarm [45]3 years ago

3 0

Answer:

Step-by-step explanation:

A stem-and-leaf plot is a format used to present quantitative data, where stem values are tenths and leaf values are units. For example, in this case, the first value is 32, 3 tenths (stem) and 2 units (leaf). So, each value in the stem colum is tenth and each number in leaf colum represents unit of those tenths.

Now, to find all numbers above 64, we observe the number 6 in the stem colum, then we count all leaf numbers in that level and above.

Observe that there are 13 values when 6 as tenth, but the first one doesn't count because its unit is 4, and we need all numbers ABOVE 64.

Therefore, there are 12 numbers above 64 which are:

65, 73, 74, 77, 87, 88, 91, 93, 93, 97, 99, 99.

You might be interested in

Un prisma cuadrangular regular tiene 4 m de arista de la base y 6m de altura Calcula el area y el volumen

mario62 [17]

Answer:

El área y volumen del prisma cuadrangular mencionado son respectivamente:

Área = $16m^{2}$
Volumen = $96m^{3}$

Step-by-step explanation:

Para solucionar este ejercicio debes recordar que un prisma cuadrangular tiene como base y como superficie cuadrados, por lo tanto, para calcular el área de dicho cuadrado puedes utilizar la siguiente fórmula:

Área de un cuadrado = $arista^{2}$

Ya que el ejercicio nos da el valor de la arista (4 metros), podemos reemplazarla en la ecuación y calcular:

Área de un cuadrado = $(4m)^{2}$
Área de un cuadrado = $16m^{2}$

Por último, para calcular el volumen debes multiplicar el área superficial, el área del cuadrado calculado, por la altura del prisma, cuyo valor dentro del enunciado es de 6 metros, de esta forma:

Volumen de un prisma cuadrangular = área superficial * altura
Volumen de un prisma cuadrangular = $16m^{2}$ * $6 m$
Volumen de un prisma cuadrangular = $96m^{3}$

Como puedes ver tras los cálculos, el área superficial del prisma es de $16m^{2}$ y su volumen es $96m^{3}$ .

7 0

2 years ago

Does the graph represent a function

kiruha [24]

Answer:

no this is not a function

Step-by-step explanation:

because if you do the line test it touches both of the lines its kinda hard to explain but yeah

4 0

2 years ago

I need help with this Question for school

bazaltina [42]

Answer:

77 = 1 x 77 or 7 x 11.

Step-by-step explanation:

4 0

3 years ago

George walks 1 mile to school. He leaves home at the same time each day, walks at a steady speed of 3 miles per hour, and arrive

alex41 [277]

Answer:

George must run the last half mile at a speed of 6 miles per hour in order to arrive at school just as school begins today

Step-by-step explanation:

Here, we are interested in calculating the number of hours George must walk to arrive at school the normal time he arrives given that his speed is different from what it used to be.

Let’s first start at looking at how many hours he take per day on a normal day, all things being equal.

Mathematically;

time = distance/speed

He walks 1 mile at 3 miles per hour.

Thus, the total amount of time he spend each normal day would be;

time = 1/3 hour or 20 minutes

Now, let’s look at his split journey today. What we know is that by adding the times taken for each side of the journey, he would arrive at the school the normal time he arrives given that he left home at the time he used to.

Let the unknown speed be x miles/hour

Mathematically;

We shall be using the formula for time by dividing the distance by the speed

1/3 = 1/2/(2) + 1/2/x

1/3 = 1/4 + 1/2x

1/2x = 1/3 - 1/4

1/2x = (4-3)/12

1/2x = 1/12

2x = 12

x = 12/2

x = 6 miles per hour

4 0

3 years ago

What does the equation 7x^2-3y^2-x+2y+4=0 represent

Romashka [77]

Answer:

Circle

Step-by-step explanation:

because a hyper bole is (y-k) 2b2 -(x-h) 2a2=1

ellipse is = (x-h) 2a2 + (y-k) 2b2 = 1

parabola is y= a (x-h) 2+ k

that's why circle is the answer

8 0

2 years ago