Answer:
Use https://www.bartleby.com/ it has helped me out a lot . Its actual tutors/teachers who answer your questions in about 30 minutes :)
Step-by-step explanation:
(A-REI) Consider the following system of equations.
3x - 5y = 4
5x + y = 16
Determine the y-coordinate of the solution of the
system.
Step-by-step explanation:
8y=78/5x=20
x=2/5
5(2/5)+y=16
2+5y=5(16)
2+5y=80
5y=78
y=78/5
4.What is the simplest way to write
3(x + 2y) - 2x + y? Briefly show or explain your
reasoning
Answer:
x + 7y
Step-by-step explanation:
[tex]3(x + 2y) - 2x + y \\ = 3x + 6y - 2x + y \\ = 3x - 2x + 6y + y \\ = x + 7y[/tex]
Hey, I really need help with a math equation which is 1/4 n + 2 = −3. What is the value of N. Please explain how you figured out the answer. Remember opposite operations! This question is due tomorrow
Which choices are equivalent to the expression below? Check all that apply.
Answer:5
Step-by-step explanation:
Answer:
the answer is 5.
Step-by-step explanation:
_/25 = 5.
Mhnaifa please help! I will mark brainliest :)
Answer:
#4Verify if sides are proportional:
XW/XV = XY/XZ
15/(15 + 20) = 27/(27 + 36)15/35 = 27/ 633/7 = 3/7∠X is common and included, the side ratios are same.
ΔXZV ~ ΔXYW by SAS
#5Verify side ratios are equal, from least to greatest:
ML/QR = 10.5/7 = 1.5LN/PR = 12/8 = 1.5MN/PQ = 18/12 = 1.5Since ratios are same, the triangles are similar by SSS
#2Ratio of corresponding sides:
(x + 2)/3 = 10/(x + 1) = 8/4
x + 2 = 6 ⇒ x = 4x + 1 = 5 ⇒ x = 4#3Ratio of corresponding sides:
18/3x = (x + 1)/15 = 9/13.5
6/x = 2/3 ⇒ x = 9(x + 1)/15 = 2/3 ⇒ x + 1 = 10 ⇒ x = 9What degree of rotation about the origin will cause the triangle below to map onto itself?
A. 270°
B. 180°
C. 360°
D. 90°
Answer:
the right answer will be c.360
360 degree of rotation about the origin will cause the triangle below to map onto itself.
What is Transformation?A point, line, or geometric figure can be transformed in one of four ways, each of which affects the shape and/or location of the object. Pre-Image refers to the object's initial shape, and Image, after transformation, refers to the object's ultimate shape and location.
We have to find the degree of rotation that cause the triangle below to map onto itself.
As, A figure will be mapped onto itself if it circles the graph 360 degrees.
So, there are 360 degrees in a circle, the figure has just completed a full circle and returned to where it was before rotating.
Thus, the degree of rotation is 360.
Learn more about Transformation here:
https://brainly.com/question/16941421
#SPJ5
HELP!! Does this graph show a function?
Answer:
Answer is C
Step-by-step explanation:
When we do the vertical line test the line intersects (cause its a circle)
This could explain better
Answer:
It is letter C No; the graph fails the vertical line test
Step-by-step explanation:
C is the answer
At an assembly 7 out of the first 10 students who entered the gym were carrying a backpack.
Based on this information, if 700 students were at the assembly, how many students could be expected to be carrying a backpack?
Record your answer on the keypad and fill in the bubbles on your answer document. Be sure to use the correct place value.
Answer: 490
Step-by-step explanation: If 7 out of ten students have a backback you can also say 7/10. If in total there are 700 students we can multiply 7/10 or .7 woth 700 and get the answer. (7/10)(700)=490
Find the equation the line with an x-intercept at (-3, O) and y-
intercept at (0, -6).
Enter your answer in slope-intercept form, y= mx +b.
Step-by-step explanation:
So in here we can put the y-intercepts and x-intercepts together as (x, y), (x, y). (-3,0), (0,-6). And let's name them as X one, Y one and X two, Y two.
After that let's find the gradient(m) frist :
m = x-x1 / y - y1
= 0 - - 3 / -6 - 0
= 3/-6
= - 1/2
Then let's find the equation of the line :
Now we need to take one of the ys and xs we
had, (-3,0) and (0,-6). Let's take (-3,0) and the
m which is -1/2 :
y-y1 = m (x-x1)
y - 0 = -1/2 ( x - - 3)
y = -1/2 ( x +3)
y = - 1/2x - 3/2
Hope u find this helpful : )
Solve for the surface area of the figure below..
Answer and Step-by-step explanation:
To find the surface area, we have to find the area of all the faces of the shape, then add them together. We also only use the exposed faces, or the faces on the outside, not the inside.
Lets start with the rectangular prismed shape.
We have two faces with sides of 4 and 5, two faces with sides 16 and 4, and 1 side with 16 and 5.
Rectangles:
4 × 5 = 20
4 × 5 = 20
4 × 16 = 64
4 × 16 = 64
5 × 16 = 80
Now, let's do the triangles up top. There will essentially be 4 triangles, because we split them in half to find the area.
They have side lengths of 6 and 8.
Triangles:
6 × 8 = 48
6 × 8 = 48
6 × 8 = 48
6 × 8 = 48
Now, we have to the two rectangles up top.
They have side lengths of 10 and 4.
Top Rectangles:
10 × 4 = 40
10 × 4 = 40
Now, we add them all together.
20 + 20 + 64 + 64 + 80 + 48 + 48 + 48 + 48 + 40 + 40 =
40 + 208 + 192 + 80 =
520.
The Surface Area of the figure is 520 [tex]m^2[/tex]
#teamtrees #PAW (Plant And Water)
Write an internet for this situation: a deposit of $245
Answer:
.
Step-by-step explanation:
Show that the triangles are similar in write a similarity statement (100 points!!!!)
Answer:
when you add them up then youll find your answer
Step-by-step explanation:
im just saying what my math teacher said im sorry if im wrong
4x+5≥9? it's not gonna let me upload the picture btw srry
Answer:
x≥1
Step-by-step explanation:
find the measure of each interior angle of a regular polygon with the following number of sides 12
Answer:
each interior angle = 150°
Step-by-step explanation:
(N x 180°) - 360° = the sum of interior angles
where N = the number of sides
(12 x 180°) - 360° = 1800°
Since it is a regular polygon, all 12 angles are equal:
1800°/12 = 150°
Base your answer on Betty is thinking of two consecutive integers whose sum is 41.
What is the value of the larger integer?
Answer:
let the numbers be, x and x+1 ( as it is consecutive number the next number will have 1 more than the number )
sum = 41
so, x + ( x + 1 ) = 41
x + x + 1 = 41
2x + 1 = 41
2x = 41 -1 = 40
2x = 40
x = 40/2 = 20
x = 20
x + 1 = 20 + 1 = 21
so the consecutive numbers whose sum is 40 are, 20 and 21
hope this answer helps you.....
please mark as brainliest... thank you!
What are the factors of 60 that has a sum of 23
Answer:
20 and 3
Step-by-step explanation:
20 + 3 is 23 but 20 x 3 is 60
I roll a dice, what is the probability that I will roll a 3 or a 4?
1/3
0
1
3/4
Answer:
1/2?
Step-by-step explanation:
if the die has the numbers 1, 2, 3, and 4 then 3 and 4 are the two numbers on top and 1 and 2 on the numbers on the bottom - 3 and 4 are the 2/4 of all the numbers, simplified, it is 1/2.
I need help with 2 math questions ASAP- Marking brainiest answer plus 20 points. I will insert a picture of the following questions.
For question number 1. You’ll need to find the area of top rectangle, area of bottom rectangle, total area of figure.
The 2nd question you’ll need to find area of shaded region. As you can see when it’s correct it changes colors.
I hope you have a blessed day and life for whoever helps me with this.
Answer:
Area is a measure of how much space there is inside a shape. Calculating the area of a shape or surface can be useful in everyday life – for example you may need to know how much paint to buy to cover a wall or how much grass seed you need to sow a lawn.
This page covers the essentials you need to know in order to understand and calculate the areas of common shapes including squares and rectangles, triangles and circles.
Step-by-step explanation:
I think
Find the value represented by a z-score of 2.403, given µ=63 and σ=4.25. Round your answer to one decimal place.
Answer:
16.5
Step-by-step explanation:
Find the value represented by a z-score of 2.403, given µ=63 and σ=4.25. Round your answer to one decimal place.
The z score formula =
z = (x-μ)/σ, where
x is the raw score = ?
μ is the population mean = 63
σ is the population standard deviation = 4.25
z = 2.403
Hence,
2.403 = (x - 63)/4.25
Cross Multiply
2.403 × 4.25 = x - 6.3
10.21275 = x - 6.3
Collect like terms
10.21275 + 6.3 = x
x = 16.51275
Approximately to 1 decimal place the value = 16.5
Karen took a science test where each correct answer was worth 2.5 points. She also correctly answered the bonus question worth 8 points. Her total points earned on the test was 45.5. Write and solve an equation to determine the number of questions Karen answered correctly..
Answer: 16 is your answer hope this helped
Step-by-step explanation:
pleas make brainly
Answer:
x=[tex]\frac{45.5-8}{2.5\\}[/tex]
Step-by-step explanation:
Each correct answer is 2.5 points
and the bonus was 8 points
and she has a total of 45.5 points
and if "x" was the number of questions she got correct then it's
x=[tex]\frac{45.5-8}{2.5\\}[/tex]
Hope this helps!
(and I wouldn't mind a crown ;-;)
If 60 ounces cost $13.00, how much does one ounce
cost?
Answer:
.27
Step-by-step explanation:
The total cost of 5 boxes of pasta is $13.00. Each box of pasta costs the same amount.
What is the cost, in dollars, for 1 box of pasta? (only enter a numerical answer in the box)
One box of pasta costs?
Answer:
$2.60
Step-by-step explanation:
13.00÷5=2.6
6 is in tens placement
If a backpack can fit 10 pounds of goods, how many backpacks are necessary for 35 pounds of goods. backpacks
Answer:
4 backpacks
Step-by-step explanation:
3 backpacks can hold 30 pounds. You can't have half a backpack, so you just add another.
Answer:
4
Step-by-step explanation:
PLEASE HeLP ASAP I’ll mark you as brainlister
Answer:
1307
Step-by-step explanation:
Don't really know how to explain this, other than use a calculator. Omni Calculator is very helpful.
Hope that this helps!
this was the question it got deleted I just need 1,2,5
Answer:
1. The volume of the cylinder is 263 [tex]cm^{3}[/tex].
2. The volume of the cylinder is 12 [tex]m^{3}[/tex].
3. The volume of the cylinder is 3165.1 [tex]cm^{3}[/tex].
4. The radius of the cylinder is 3.6 cm.
5a. Area of the base is 50.2 [tex]cm^{2}[/tex].
5b. The curved surface area of the pencil holder is 351.7 [tex]cm^{2}[/tex].
5c. The surface are of the pencil holder is 452.2 [tex]cm^{2}[/tex].
Step-by-step explanation:
1. The given shape is a cylinder, so that;
volume of a cylinder = [tex]\pi[/tex][tex]r^{2}[/tex]h
= 3.14 x [tex](3.8)^{2}[/tex] x 5.8
= 262.98128
The volume of the cylinder is 263 [tex]cm^{3}[/tex].
2. This is also a cylinder, but with a given diameter.
radius = [tex]\frac{diameter}{2}[/tex]
= [tex]\frac{1.2}{2}[/tex] = 0.6 m
volume of a cylinder = [tex]\pi[/tex][tex]r^{2}[/tex]h
= 3.14 x [tex](0.6)^{2}[/tex] x 10.6
= 11.98224
The volume of the cylinder is 12 [tex]m^{3}[/tex].
3. volume of a cylinder = [tex]\pi[/tex][tex]r^{2}[/tex]h
= 3.14 x [tex]6^{2}[/tex] x 28
= 3165.12
The volume of the cylinder is 3165.1 [tex]cm^{3}[/tex].
4. volume of a cylinder = [tex]\pi[/tex][tex]r^{2}[/tex]h
239 = 3.14 x [tex]r^{2}[/tex] x 6
239 = 18.84 [tex]r^{2}[/tex]
[tex]r^{2}[/tex] = [tex]\frac{239}{18.84}[/tex]
= 12.6858
r = [tex]\sqrt{12.6858}[/tex]
= 3.5617
The radius of the cylinder is 3.6 cm.
5. Area of the base = [tex]\pi[/tex][tex]r^{2}[/tex]
radius = [tex]\frac{diameter}{2}[/tex]
= [tex]\frac{8}{2}[/tex] = 4 cm
Area of the base = 3.14 x [tex]4^{2}[/tex]
= 50.24
Area of the base is 50.2 [tex]cm^{2}[/tex].
5b. Area of the curved surface of the pencil holder = 2[tex]\pi[/tex]rh
= 2 x 3.14 x 4 x 14
= 351.68
The curved surface area of the pencil holder is 351.7 [tex]cm^{2}[/tex].
5c. Surface area of the pencil holder = 2[tex]\pi[/tex]rh + 2[tex]\pi[/tex][tex]r^{2}[/tex]
= 2[tex]\pi[/tex]r(h + r)
= 2 x 3.14 x 4 (14 + 4)
= 452.16
The surface are of the pencil holder is 452.2 [tex]cm^{2}[/tex].
Cyber Monday Shopping A survey of U.S. adults found that of people said that they would get no work done on Cyber Monday since they would spend all day shopping online. Find the confidence interval of the true proportion. Round intermediate answers to at least five decimal places. Round your final answers to at least three decimal places.
Complete question :
Cyber Monday Shopping A survey of 1000 U.S. adults found that 33% of people said that they would get no work done on Cyber Monday since they would spend all day shopping online. Find the 95% confidence interval of the true proportion.
Answer:
(0.301 ; 0.359)
Step-by-step explanation:
Sample size, n = 1000
Phat = 0.33
(1 - phat) = 1 - 0.33 = 0.67
Zcritical at 95% = 1.96
Confidence interval :
Phat ± margin of error
Margin of Error = Zcritical * sqrt[(phat(1 - phat)) /n]
Margin of Error = 1.96 * sqrt[(0.33 * 0.67) / 1000]
Margin of Error = 1.96 * 0.0148694
Margin of Error = 0.0291440
Lower boundary = (0.33 - 0.0291440) = 0.300856
Upper boundary = (0.33 + 0.0291440) = 0.359144
(0.301 ; 0.359)
Can you guys help me solve this
A map uses a scale of 2 cm = 50 kilometers. On the map, two cities are 9 cm apart, how far apart are they in real life?
Answer:
they are in 225kilometers apart.
hope it helps.
2x - 5y +10x - 2y + 3z
Answer:
1
2
−
7
+
3
Step-by-step explanation:
Does this graph show a constant or variable rate of change?
Answer:
constant
Step-by-step explanation: