Answer:
- 3.2
Step-by-step explanation:
- 5x + 4 = 20
- 5x = 20 - 4
- 5x = 16
x = 16 / - 5
x = - 3.2
A scale model of an object has a scale of 1cm : 2ft. The actual object is 11 feet tall. How tall is the model?
Given:
The scale model of an object has a scale of 1cm : 2ft.
The actual object is 11 feet tall.
To find:
The height of the model.
Solution:
It is given that the scale model of an object has a scale of 1cm : 2ft and the actual object is 11 feet tall.
Let the height of the model be x cm.
[tex]\dfrac{x\ cm}{11\ ft}=\dfrac{1\ cm}{2 \ ft}[/tex]
[tex]x\ cm=\dfrac{1 \ cm\times 11\ ft}{2 \ ft}[/tex]
[tex]x\ cm=5.5\ cm[/tex]
Therefore, the model is 5.5 cm tall.
Which equation could be used to find the
total cost cif Fernando wanted to buy
8 pencils from the school store?
Answer:
A. C=0.15*8
Step-by-step explanation:
3 pencils for $0.45, think about how much one pencil costs? so divide 0.45 by 3 and get 0.15 which basically means 1 pencils is 15 cents, multiply that by the amount of pencils fernando wants which is 8 and that's your equation
I am giving brainlest
Which statement best describes the value of 8 ÷ 4 × 7 + (38 – 15)?
a
the product of 4 and 7 divided by 8, plus 38, minus 15
b
the quotient of 8 and 4, times 7, plus the sum of 38 and 15
c
the product of 8 and 4 times 7, plus the difference of 38 and 15
d
the quotient of 8 and 4, times 7, plus the difference of 38 and 15
Answer:
D is the answer
Step-by-step explanation:
Determine the slope and y-intercept of each linear function below y=x/3-1
Answer:
Slope= 1/3
y-int: -1
Step-by-step explanation:
Sophie needs to determine the amount of water that will fit into her new vase, shown below.
Which combination of geometric shapes can she use to best estimate the vase's volume?
A cone and a hemisphere
A cylinder and a sphere
A truncated cone and a sphere
A truncated pyramid and a hemisphere
Answer:A truncated cone and a sphere
Step-by-step explanation:
I just did it.
The combination of geometric shapes can she use to best estimate the vase's volume is a truncated cone and a sphere.
Sophie needs to determine the amount of water that will fit into her new vase, as shown below.
What is the volume?
Volume is a scalar quantity expressing the amount of three-dimensional space enclosed by a closed surface.
We have to determine the combination of geometric shapes can she use to best estimate the vase's volume.
Therefore the combination of geometric shapes can she use to best estimate the vase's volume is a truncated cone and a sphere.
To learn more about the volume visit:
https://brainly.com/question/1972490
#SPJ2
How much money is 15% of $ 14.99
Answer:
The discount is $2.25 and the final price will be $12.74
Step-by-step explanation:
Discount = Original Price x Discount %/100
Discount = 14.99 × 15/100
Discount = 14.99 x 0.15
You save = $2.25
Final Price = Original Price - Discount
Final Price = 14.99 - 2.2485
Final Price = $12.74
hope this helps and is right. p.s. i really need brainliest :)
Answer:
$12.74
Step-by-step explanation:
15% of 14.99 dollars
14.99-2.25=12.74
Final answer=12.74 dollars
What is y if x= -2 and y = 1/2x?
if you do links i will band you
In a race, 24 out of the 25 bicyclists finished in less than 57 minutes. What percent of bicyclists
finished the race in less than 57 minutes? Write an equivalent fraction to find the percent
NO LINKS
Find the surface area of the rectangular prism below.
Answer:
630 ft
Step-by-step explanation:
(11 * 15) * 2 = 330 ft
(5 * 15) * 4 = 300 ft
330 + 300 = 630 ft
(2+√2) is
an integer
a rational number
an irrational number
none of these
Answer:
Irrational number
Step-by-step explanation:
√2 is an irrational number.
So, when a integer or rational number is added to irrational number, we will get irrational numbers
2 + √2 is an irrational number.
What is the solution of the system of equations? -4x+3y=-12 -2x+3y=-18
*Note: I believe it has no solution, but I would like to make sure. Thank you all for your help.
Answer:
Step-by-step explanation:
I've enclosed a graph to show you that there is one solution.
-4x + 3y = - 12
- 2x + 3y = - 18 Subtract
-2x = 6 Divide by - 2
-2x/-2 = 6/-2
x = - 3
- 4x + 3y = - 12
-4(-3) + 3y = - 12
12 + 3y = - 12
3y = - 12 - 12
3y = - 24
3y/3 = - 24/3
y = - 8
Which is exactly what the graph shows.
You can tell immediately that this has 1 or more solutions just by looking at the number in front of x and y in each each equation.
It's always a good idea to graph a question like this one. Desmos is a pretty good tool to use if you don't have a graphing calculator.
The y's are the same so you are 1/2 way home in saying what you did.
The x's are different so that means you have at least 1 solution.
find the expression as the cosine of an angle
cos pi/4 cos pi/9 - sin pi/4 sin pi/9
Answer: cos(13pi/36)
Step-by-step explanation: just did the assignment
3. Which of the following could represent the sides of a right triangle?
Hint: use a? + b2 = c2
Help help help help help help
Answer:
18.457
Step-by-step explanation:
techwiz Electronics makes a profit of $35 for each MP3 players sold and $18 for each DVD player sold. Last week, techwiz so the combined total of 128 MP3 and DVD players let X be the number of MP3 players techwiz sold last week write an expression of the combined total profit in dollars Tech whiz made from MP3 and DVD player
Answer:
128 = 35x + 18y
Step-by-step explanation:
total = 35(MP3) + 18(DVD)
128 = 35x + 18y
help help Find the surface area of the figure !
Answer: 340 in. squared
Step-by-step explanation:
17*7=119
15*7=105
8*7=56
8/2*15=60
119+105+56+60=340 in.^2
Classify each as a minor arc, major arc, or semicircle!!!!!!!!!!!!
AE:
AEB:
FDE:
FED:
FA:
BDF:
Answer:
Minor Arc: AE, FA
Semicircle: AEB, FDE
Major Arc: FED, BDF
Step-by-step explanation:
Required
Classify base on the type or arc
Keynote
Minor arcs are less than 180 degrees
Semicircle are equal to 180 degrees
Major arcs are less than 180 degrees
Using the above keynote, we have the following observation
AE: Minor
AEB: Semicircle
FDE: Semicircle
FED: Major
FA: Minor
BDF: Major
3/4 Ravi is as tall as Sam, Mike is as tall as 5/3 Ravi. Find the ratio of Mike's height to Sam's height.
Answer: The ratio of Mike and Sam Heights are S:M=5:4
Step-by-step explanation:
Ravi is 3/4 as tall as Sam.
Consider the equation is 3/4 *R=S
Mike is 5/3 as tall as Ravi.
Then, the equation is 5/3 *M=R
Solve the two equation to find ratio of mikes and sam height.
3/4*R=S Eq(1)
Rearranging eq (1) for R
R=4/3 *S Eq(3) made from eQ (1)
R=5/3*M Eq(2)
Comparing Eq 2 &3 equations
4/3*S=5/3*M
S/M=(5/3)*(3/4)
S/M=5/4
Factorise the expression
it is not possible
that expression is not factorable with rational numbers
rational means - A number that can be expressed as the ratio of two integers.
write an equivalent expression 8(y-7z+1)
Answer:
8y−56z+8
Step-by-step explanation:
What kind of shape is this? O A. Not a polygon O B. Triangle O c. Quadrilateral O D. Pentagon
Answer:
Add the picture please :) i will go on your page and answer when you add the image. Remember to always double check if you have the image clipped on whenever you ask something that needs an image, thank you.
Find the perimeter pt3
Answer:
28
Step-by-step explanation:
2x3x2x2=28 the permiter is the area around the shape like lenght witdth and heght
Graph y = 3x – 3 using the slope and y-intercept.
You randomly choose one of the chips. Without replacing the first chip, you choose a second chip. Find
the probability of choosing the first chip, then the second chip.
White and not a Green
Answer:
probability = 0.07777
Step-by-step explanation:
there are 10 chips
white 1
red 4
green 2
blue 3
the probability of choosing the W chip is 1/10 or 0.10
now there are 9 chips left (the first chip was not replaced)
the probability of choosing a non-green chip is (9-2)/9 = 7/9 = 0.7777
so now I THINK you multiply the two probabilities to get the total probability
probability = 0.1 ·0.7777
probability = 0.07777 which makes sense it has to be less than 0.1
Answer:
1/15
Step-by-step explanation:
2/10 x 3/9= 6/90
6 divided by 6
90 divided by 6
=1/15
The area of a triangle is 92 square inches. The base is 23 inches. What is the height in inches? Do not include units in your answer.
Answer:
34,5 ?? I am not good at this but I did 92-23 that's 69 ÷ 2 = 34.5 ?
Answer:
Step-by-step explanation:
We can use the formula for the area of a triangle, to help us find the height:
Area=12⋅b⋅h
Using the formula for area, we can solve for the height by plugging in the information we have about the area and the base:
92=12⋅23⋅h
Isolate h by multiplying both sides by 2 and dividing both sides by 23.
hh=2⋅9223=8
The height is 8 inches.
3. Write the equation of the circle with a center at (-6, 1) and an area of 7n.
A Q(x + 6)^2 + (y - 1)^2 = 14
B (x - 6)^2 + (y + 1)^2 = 49
C (x + 6)^2 + (y - 1)^2 = 49
D (x + 6)^2 + (y - 1)^2 = 7
E (x - 6)^2 + (y + 1)^2 = 7
Answer:
D [tex] (x +6) ^2 +(y-1)^2 =7 [/tex]
Step-by-step explanation:
Center of the circle (h, k) = (-6, 1)
Area of the circle [tex] =\pi r^2 [/tex]
[tex] 7\pi=\pi r^2 [/tex]
[tex] \frac {7\pi}{\pi} =r^2 [/tex]
[tex]r^2=7[/tex]
[tex]r=\sqrt 7[/tex]
Radius [tex] r=\sqrt {7}[/tex]
Equation of circle in center radius form is given as:
[tex] (x - h) ^2 +(y-k) ^2 =r^2 [/tex]
Plugging the values of h, k and r in the above equation, we find:
[tex] [x - (- 6)] ^2 +[y-1 ]^2 =(\sqrt {7})^2 [/tex]
[tex] (x +6) ^2 +(y-1)^2 =7 [/tex]
Pls help !! Pls no links :)
Answer:
A 5 <= A <= 40
Step-by-step explanation:
down point is (5, 50)
up point (40, 350)
so 5 <= A <= 40
What are the restrictions on x? square root of 5x^2
Step-by-step explanation:
there are actually no restrictions. even with a negative x, squaring it makes for a positive result.
PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!
Find the value of x in the triangle shown below.
a. x=21
b. x=42
c. x= 15
d. x=21
Answer:
Answer:
[tex] \huge\mathfrak\pink{S} \huge\mathfrak\purple{o} \huge\mathfrak\blue{l} \huge\mathfrak\red{u} \huge\mathfrak\green{t} \huge\mathfrak\pink{i}\huge\mathfrak\purple{o}\huge\mathfrak\red{n}\huge\mathfrak\orange{➔}\ [/tex]
by using Pythagoras law:
h²=p²+b²
x²=9²+12²
x=√225=15unit