20 POINTS PLZ HELP
Select the correct answer from the drop-down menu.
The order of matrix A + B is __.
Answer:
last one 4 x 1
Step-by-step explanation:
Order of the matrices must be the same in order to add them up
Adding matrices mean adding corresponding elements together
Order of matrix is 4 rows and 1 column
Answer:
4 x 1 ( 4 rows and one column)
Step-by-step explanation:
Recall the definition for order of a matrix: The number of rows times the number of columns.
So, in this case, we are adding matrix A which is 4 rows and 1 column to matrix B which is also of 4 rows and one column, obtaining a third matrix that has also 4 rows and one column:
[tex]\left[\begin{array}{cccc}-9\\0\\3\\-1\end{array}\right] +\left[\begin{array}{cccc}0\\4\\-6\\2\end{array}\right] =\left[\begin{array}{cccc}-9\\4\\-3\\1\end{array}\right][/tex]
The resultant A + B is also of 4 rows and one column
If all the edges of prism A are multiplied by 5 to create prism B. The volume of prism B will be __________ times the volume of prism A? *
Answer:
125
Step-by-step explanation:
Say prism A is a cube, and all the sides are x, then the volume of prism A is [tex]x^3[/tex].
If you multiply each side by 5 (prism B), then each side is 5x, so the volume of prism B is [tex]125x^3[/tex], which is 125 times more than [tex]x^3[/tex].
Find the volume of a pyramid with a square base, where the area of the base is 11.9\text{ in}^211.9 in 2 and the height of the pyramid is 13.9\text{ in}13.9 in. round your answer to the nearest tenth of a cubic inch.
Answer:
The volume of the pyramid is 165.4 inches^3
Step-by-step explanation:
In this question, we are asked to calculate the volume of the pyramid with a square base and also with the given height.
To find the area of this pyramid, what we need to do is to multiply the area of the base by the height of the pyramid
From the question, the area of the square base is 11.9 in^2 while the height of the pyramid is 13.9 in
Thus the volume here is simply 11.9 * 13.9 = 165.41 which to the nearest tenth of cubic inch is 165.4 inch^3
Please answer correctly !!!!! Will mark brainliest !!!!!
Answer:
-22
Step-by-step explanation:
From the graph, f(-8) = -2 and g(2) = -4, so the answer will be -3 * (-2) + 7 * (-4) = 6 - 28 = -22. Hope this helps!
What is the value of h in the figure below?
Answer:
12
Step-by-step explanation:
ΔBAD is similar to ΔCBD. So we can write a proportion:
BD / CD = AD / BD
h / 16 = 9 / h
h² = 144
h = 12
Meg purchased a stereo system at a local store. It cost $675. She paid for it in six equal installments of $139 each. How much interest did she pay?
Explanation plz. Would like to know how to solve for future questions.
Answer:
159
Step-by-step explanation:
She paid 6 payments of 139
6*139 = 834
The cost was 675
834-675 =159
The interest was 159
Which of these tables represents a linear function? A 2-column table with 4 rows. Column 1 is labeled x with entries 3, 4, 5, 6. Column 2 is labeled y with entries 3, 4, 6, 7. A 2-column table with 4 rows. Column 1 is labeled x with entries 3, 4, 5, 6. Column 2 is labeled y with entries 6, 5, 4, 3. A 2-column table with 4 rows. Column 1 is labeled x with entries 3, 4, 5, 6. Column 2 is labeled y with entries 7, 6, 5, 3. A 2-column table with 4 rows. Column 1 is labeled x with entries 3, 4, 5, 6. Column 2 is labeled y with entries 2, 4, 5, 6.
Answer:
B
Step-by-step explanation:
The other tables don't increase or decrease by only one number. I'm pretty sure it's B. If it isn't, my apologies.
The required linear function is given by-
x = 3 4 5 6
y = 6 5 4 3
Option 2 is correct.
From the option of tables the option that shows linear function is to be chosen.
Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.
Options 1), 3), and 4) can be omitted because the relation between the column of the table is not a linear function and is irrelevant to each other. While option 2) contains the table that shows a linear relationship by the following expression,
y = -x + 9
The data below give the information for the expression above
x = 3 4 5 6
y = 6 5 4 3
Tus, the required linear function given by option 2 is correct.
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What is the slope of the line through (-10,1)(−10,1) and (0,-4)(0,−4)?
choose one:
A[-2]
B[2]
C[1/2]
D[-1/2]
Answer:
-1/2
Step-by-step explanation:
To find the slope
m = (y2-y1)/(x2-x1)
m= (-4 -1)/(0- - 10)
= (-4-1)/(0+10)
= -5/10
= -1/2
Answer:
D
Step-by-step explanation:
hope this helps
How many millimeters are in 1 meter? Use the metric table to help answer the question.
Metric Table
kilo-
hecto-
deka-
unit
deci-
centi-
milli-
1,000
100
10
1
0.1
0.01
0.001
Please help me!!!
Answer:
100cm make one metre
10mm make 1cm
therefore, 100×10= 1000
Answer:
answer is d
Step-by-step explanation:
took a test:)
Luis Marissa and Federico are raising money for a school trip Luis has raised 6/7 of the total amount needed,Marissa has raised 5/9 of the total amount needed and Federico has raised 11/10 of the total amount needed.Who has raised the MOST Money
Answer:
Federico
Step-by-step explanation:
Find the mean median and mode of the refrigerator prices shown in the table. Witch measurement might be misleading to describing the average cost of a refrigerator?
Answer:
We need the picture.
Step-by-step explanation:
Unless the data is skewed (which means there is outliers) then you use mean as the most accurate. If you have a skewed graph or outliers then mean would mislead you to believe prices are higher (if you have high outliers) or low (if you have low outliers). Median is typically very accurate. Mode may be inaccurate if you have a lot of prices in a really high or low value.
Una catedral esta situada en la cima de una colina. Cuando la punta de su torre se observa desde el ple de la loma, el angulo de elevacion es de 48°. Cuando se ve desde un punto a una distancia de 6096 m del pie del promontorio, el angulo de elevacion es de 41° la cuesta de la colina forma un angulo de 32° Aproxima la altura de la catedral
Answer:
La altura de la catedral es de 15119,97 m.
Step-by-step explanation:
Para una respuesta única, la pregunta se formula de la siguiente manera:
Una catedral se encuentra en la cima de una colina. Cuando se ve la parte superior de su torre desde la parte inferior de la colina, el ángulo de elevación es de 48 °. Cuando se ve desde un punto a 6096 m del pie del promontorio, el ángulo de elevación es de 41 °, la pendiente de la colina forma un ángulo de 32 ° Se aproxima a la altura de la catedral
Deje que la base de la colina = C
El punto 6096 m de la base = A
La cima de la catedral = B
∴ ∠A = 41 °
∠C = 180-48 = 132 °
∠B = 180 - (41 + 132) = 7 °
[tex]\dfrac{6096}{sin7} = \dfrac{CB}{sin41}[/tex]
∴ CB = 32816.59 m.
Punto E = Base de la catedral.
Punto D = Punto debajo de la base de la catedral al nivel del pie de la colina
Por lo tanto, la altura de la catedral = BE
∡ABE = 90-41 = 49 °
∡CED = 90-32 = 58 °
∴ ∡CEB = 180 - 58 ° = 122 °
De la regla seno tenemos;
[tex]\dfrac{CB}{sin(\angle CEB)} = \dfrac{BE}{sin(\angle ECB)}[/tex]
∠EBA = 90 - 48 = 42°
∠EBC = 42 - 7 = 35°
∠ECB = 180 - 35 - 122 = 23°
[tex]\therefore \dfrac{32816.59 }{sin(122)} = \dfrac{BE}{sin(23)}[/tex]
[tex]BE = \dfrac{32816.59 }{sin(122)} \times sin(23) = 15119.97 \ m[/tex]
La altura de la catedral = 15119,97 m.
If the family decides to fly, they know that they will need a rental car for at least part of their trip. Gabriela and Luis estimate a budget of $315 for rental car expenses. One rental car company charges $55 per day and $35 in taxes and fees. They also estimate that they will spend $15 per day on gas. Gabriela wrote the equation (55d+35)+15d=315 to determine the number of days the family can rent a car from this company.
How many days could the Morales family rent a car if they choose this rental car company with their estimated budget?
Answer:
The answer is 4
Step-by-step explanation:
Remove the parentheses
55d + 35 + 15d = 315
Collect the like terms
70d + 35 = 315
Move the constant to the right
70d = 315 - 35
Subtract the numbers
70d = 280
d = 4
consider the formula for slope between two coordinate points, m, shown below.
m=y2-y1/x2-x1
which of the following equations is equivalent to the slope formula?
Answer:
the answer is A
Step-by-step explanation:
if u see, to get Y2 on its own u have to first multiply x2-x1 on both sides
m(x2-x1)=y2-y1
and then to get Y2 alone u need to add Y1 to both sides
m(x2-x1)+y1=y2
The following equations is equivalent to the slope formula A.
We have given that,
consider the formula for slope between two coordinate points, m, shown below.
[tex]m=y_2-y_1/x_2-x_1[/tex]
What is the formula of the slope?[tex]m=y_2-y_1/x_2-x_1[/tex]
Where m is the slope and [tex]y_1[/tex] and [tex]y_2[/tex] and [tex]x_1[/tex] and [tex]x_2[/tex] are coordinates of the axis.
if u see, to get [tex]Y_2[/tex] on its own u have to first multiply [tex]x_2-x_1[/tex] on both sides
[tex]m(x_2-x_1)=y_2-y_1[/tex]
and then to get Y2 alone u need to add Y1 to both sides
[tex]m(x_2-x_1)+y_1=y_2[/tex]
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Please send help, I need it answered.
Answer:
100 degrees
Step-by-step explanation:
Write the function for the graph.
(1,8) (0,2). will give brainliest
Answer:
D
Step-by-step explanation:
you have it right :)
The function with the coordinates (1, 8) and (0, 2) is [tex]f(x)=2\times(4)^x[/tex]. Therefore, option D is the correct answer.
What is the exponential function?Exponential function, as its name suggests, involves exponents. But note that, an exponential function has a constant as its base and a variable as its exponent but not the other way round (if a function has a variable as the base and a constant as the exponent then it is a power function but not an exponential function).
From the given graph, the coordinate points are (1, 8) and (0, 2)
Using the formula [tex]y=a\times(b)^x[/tex]
Where, a is x-intercept
Substitute, a=2 and (x, y)=(1, 8) in [tex]y=a\times(b)^x[/tex], we get
[tex]8=2\times(b)^1[/tex]
⇒ b=4
Substitute a=2 and b=4 in [tex]y=a\times(b)^x[/tex], we get
[tex]y=2\times(4)^x[/tex]
⇒ [tex]f(x)=2\times(4)^x[/tex]
Therefore, the function for the given coordinates is [tex]f(x)=2\times(4)^x[/tex].
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1
Two similar triangular pastures meet at a
vertex. The dimensions are given in yards.
How much fencing would be needed to
enclose the larger pasture?
11
7
5
13
х
y
Answer:
35 by 40
Step-by-step explanation:
Please be fast! What is the true solution to the equation below?
Answer: x=75
Step-by-step explanation:
For what value of x do the expressions 2/3 x+2 and 4/3 x-6 have the same value? *
Answer: 42
Step-by-step explanation:
Answer:
x = 12
Step-by-step explanation:
Hi, to answer this we have to equal both equations given and solve for x.
2/3x+2 = 4/3x-6
Solving for x:
2/3x-4/3x= -6-2
-2/3x = -8
x = -8/ (-2/3)
In conclusion, when the value of x is equal to 12, both expressions will have the same value.
Martin drew a triangle. Its sides were 3 cm 3 cm3, start text, space, c, m, end text, 4 cm 4 cm4, start text, space, c, m, end text, and 5 cm 5 cm5, start text, space, c, m, end text. It has one right angle and two acute angles. Complete the sentence to describe the triangle Martin drew. Martin's triangle is and .
Answer:
Martins triangle is a right angled triangle with hypotenuse of 5cm adjacent of 4cm and opposite side of 3cm.Step-by-step explanation:
A triangle that has one of his angles to be 90° is known as a right angled triangle. The triangle has one right angle and two acute angles. The three sides of the triangle are namely the hypotenuse (which is the longest side), the opposite and the adjacent. One of the side of the triangle can be written in terms of the other using the theorem called pythagoras. According to the theorem;
[tex]hyp^{2} = opp^{2} + adj^{2} \\[/tex]
Based on the values of the sides given
hypotenuse = 5cm (being the longest side)
[tex]hyp^{2} = 3^{2}+4^{2} \\ hyp^{2} = 25\\hyp = \sqrt{25}\\ hyp = 5cm[/tex]
This shows that the triangle is a right angled triangle as described by Martin since we are able to express one side in terms of the other.
what is 1/4 liters in decimal?
Answer:
0.25 LitersStep-by-step explanation:
Easy, I just memorize these :)
1/2 = 0.5
1/3 = 0.33
1/4 = 0.25
1/5 = 0.2
2/3 = 0.67
3/4 = 0.75
I'm always happy help :)
You were shining a flashlight at a metal wall and noticed that it reflected at a different angle. What could be a possible explanation for this?
your flashlight is running low
you pointed the flashlight at a funny angle
the metal surface isn’t flat
the metal isn’t shiny enough
EXPLAIN YOUR ANSWER
Answer:
Possible explanation might include
The metal surface isn't flatyou pointed the flashlight at a funny angleI want brainliest!!!Step-by-step explanation:
to double check your work, just imagine every answer...
your flashlight is low on battery, doesn't reflect light at a different angle thats for sure
light at a funny angle would cause the light to be reflected at a different angle.
The surface isn't flat would cause light to reflected at a different angle
the metal isn't shiny doesn't cause light to be reflected at a different angle
1. The height of a cylindrical tank is 9.5 feet. The diameter of this tank 1.5 feet longer than the height. The tank was holding water at full capacity, but someone consumed one-seventh of the water. Which is closest to the volume of the remaining water in the tank?
A 105 cubic feet
B 165 cubic feet
C 246 cubic feet
D 287 cubit feet
Work out the circumference of this circle. Give your answer in terms of pi and state it’s units
Circumference = Diameter x PI
The units is the same units as the diameter = cm.
The diameter is shown as 14 cm
Circumference = 14 x PI = 14PI cm.
I need help with this question
Rodger bowled seven games last week. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the median of Rodger's score?
Answer
The median is 155
Step-by-step explanation:
You get the numbers from least to greatest then the middle number is your median.
Find the surface area of the cylinder.
9 cm
19 cm
Answer:
You have not given any detail about the cylinder like radius diameter or height.
In the last couple of months, Jack has seen rabbits in his backyard on
12 days and no rabbits on 36 days. What is the approximate probability
that he will see rabbits in his yard tomorrow?
Answer:
12/36 can be simplifed to 1/3 so he has a 1/3's chance of seeing them or 33%
Step-by-step explanation:
:)
Answer:
1/4
Step-by-step explanation:
Suppose a medium pizza at Vincent's costs $6.75 plus $0.75 for each topping, and the cost of a medium pizza at Original Italian Pizza is $6.15 plus $0.80 per topping. How many toppings would you have to include on your pizza for the price to be the same at both places?
Answer:
12 toppings
Step-by-step explanation:
To do this, we need to write an equation for each place, and then, equal both equations to solve for this.
Let's call "y" the price of the pizza, and "x" the number of toppings.
At Vincents, pizza costs 6.75 + 0.75 for each topping, so the equation here would be:
y = 6.75 + 0.75x (1)
Now, at italian pizza, a pizza costs 6.15 + 0.80 per topping, so the equation:
y = 6.15 + 0.80x (2)
Now, we don't need to know the actual price of the pizza, we only want to know how many toppings we need to add on both places, so the pizza has the same price. We have both equations, it's time to equal both of them:
Equalling (1) and (2) we have:
6.75 + 0.75x = 6.15 + 0.80x
Now, let's solve for x:
6.75 - 6.15 = 0.80x - 0.75x
0.6 = 0.05x
x = 0.6 / 0.05
x = 12
So the number of toppings to include in the pizza so the price is the same for both places, will have to be 12 toppings.
Answer:
12 toppings and the prize will be the same.
Step-by-step explanation:
Let
number of toppings = a
Medium pizza at Vincent's
cost = 6.75 + 0.75a
Medium pizza at Original Italian Pizza
cost = 6.15 + 0.80a
For the cost to be the same
6.75 + 0.75a = 6.15 + 0.80a
collect like terms
6.75 - 6.15 = 0.80a - 0.75a
0.6 = 0.05a
divide both sides by 0.05
a = 0.6/0.05
a = 12
12 toppings and the prize will be the same.
please help me out on this! Thank you !
Answer:
98,100,A
Plz mark me brainliest.
Step-by-step explanation: