Step-by-step explanation:
cross multiply
2x - 4 = 4 × 5
2x - 4 =20
collect like terms (CLT)
2x = 20 + 4
2x=24
divide both sides by 2
x=12
The price of an item has been reduced by 15%. The original price was $87.
Answer:
The new cost is $73.95
The discount was $13. 05
Step-by-step explanation:
Turn the % into a decimal so it would be 0.15.
Then multiply it to the total, 87 x 0.15 = 13. 05
so the discount subtracted $13.05 off of the original price.
87 - 13. 05 = 73.95
Two different expressions equivalent to 8d - 4?
Please help me i need to have the answer for a test!!
Answer : 8*d -4. and. 8*d -4 + 4
Answer:
4(2d-1) and 2(4d-2)
Step-by-step explanation:
Percy bought an encyclopedia pried at $13.85 shipping and handing cost an additional 20 percent of the price
Answer:
Percy spent $2.77 for shipping and handling.
Step-by-step explanation:
2.77 is 20 percent of 13.85
So the African bush elephant weighs between 4.4 tons and 7.7 tons what are its least and greatest weights rounded to the nearest ton ?
Answer:
least: 4 tons, greatest: 8 tons
Step-by-step explanation:
.4 round down (5 and up, round up rule)
.7 round up
Tyrone walked 8 miles in a walkathon at a speed of 2 miles per hour. How long was he walking?
4 hours
6 hours
10 hours
16 hours
Answer:
4 hours
Step-by-step explanation:
Answer:
the answer is 4 HOURS
Step-by-step explanation:
i took the exam
List all the factor pairs for 48. make a table to help and add the table.
Answer:
The factor pairs of the number 48 are: 1 x 48, 2 x 24, 3 x 16, 4 x 12, and 6 x 8
Step-by-step explanation:
GIVING BRANLIEST EASY POINTS
1.How do you dilate a figure on the coordinate plane?
2. What is scale factor?
3. What are the properties of similar figures (what do they have congruent and/or proportional)?
Answer:
1. To dilate something in the coordinate plane, multiply each coordinate by the scale factor. This is called mapping. For any dilation the mapping will be \begin{align*}(x, y) \rightarrow (kx, ky)\end{align*}. In this Concept, the center of dilation will always be the origin, unless otherwise stated.
2. When using State Plane coordinates the scale factors, also known as the K factors, are ratios that can be used as multipliers to convert ellipsoidal lengths, also known as geodetic distances, to lengths on the map projection surface, also known as grid distances, and vice versa.
3.Similar figures have the same shape (but not necessarily the same size) and the following properties: Corresponding sides are proportional. That is, the ratios of the corresponding sides are equal. Corresponding angles are equal.
Step-by-step explanation:
I don't know if this helped but have a good day
These are so annoying
Answer:
a=4
b=6
perimiter=38
Step-by-step explanation:
you take the side lengths by it and you can subtract and stuff then you add them all up to find the perimeter
Answer:
3-9=6 and 6-10=4
Step-by-step explanation
part of b is cut by 3 as u can see above and 9 is at the bottom on which the part is cut, as for the other one 10 is the main line and is cut by 6. so u just have minus the main line aka the long line by a parallel line next to it
Solve the equation + 6 = 2.
Question 13 options:
A)
No Solution
B)
a = 13
C)
a = 7
D)
a = 61
Question 14 (5 points)
Solve the equation 10 + y√
y
= 14
Question 14 options:
A)
y = 576
B)
y = 4
C)
y = 16
D)
y = 2
4/x = 2/7 please help ASAP!!
Answer:
use cross multiplication to solve
4*7 = 2*x (multiply)
28 = 2x (divide both sides by 2 to isolate x )
x = 14 (your answer)
Step-by-step explanation:
I hope this helped :)
Answer:
Step-by-step explanation:
Or,2×x=7×4
Or,2x=28
Or,x=14
Do any of you know this??
Answer:
wouldn't be 70°?
Step-by-step explanation:
30 + 40 = 70
I GIVEEE BVRAINLILSDTTTTTTTT
Answer:
c=10,3
D=0,3
E=0,6
F=10,6
pls give brainliest
Answer:
ghtfgngngnfgjyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
Step-by-step explanation:
ngfngfnfgnfgnfg
What is the GCF of 17 and 8?
Answer: the answer is 1
Step-by-step explanation:
Answer: The GCF of 17 and 8 is 1
Simplify the expression:
4h + 1 + h
Answer:
5h...................
Solve the system of equations
4x-y=10
y=2x-2
Answer:
y=2/3 x=-5/3
Step-by-step explanation:
Please help me with this question
Answer:
3 x 3/4 = 9/4 = 2 1/4
7 x 3/8 =21/8 = 2 5/8
4 x 1/5 = 4/5
5x 2/3 = 10/3 = 3 1/3
Step-by-step explanation:
ANSWER:
3 x 3/4 = 9/4 = 2 1/4
7 x 3/8 = 21/8 = 2 5/8
4 x 1/5 = 4/5
5 x 2/3 = 10/3 = 3 1/3
Step-by-step explanation:
A manufacturer knows that their items have a normally distributed length, with a mean of 16.2 inches, and standard deviation of 0.9 inches. If one item is chosen at random, what is the probability that it is less than 16.4 inches long
Answer:
57.926%
Step-by-step explanation:
Calculation for the probability that it is less than
16.4 inches long
Using this formula
z = (X - μ) / σ
Where,
X represent Date=16.4
μ represent Mean=16.2
σ represent Standard deviation=0.9 inches
Let plug in the formula
z = (16.4 - 16.2) /0.9 inches
z=0.2/0.9 inches
z = 0.2
Using Z-score table to find the area of 0.2
z=0.57926*100
z=57.926%
Therefore the probability that it is less than
16.4 inches long is 57.926%
Rewrite the function by completing the square. f(x)=x^2−2x+17
Answer:
[tex]f(x) = {x}^{2} - 2x + 17 \\ completing \: squares \\ divide \: the \: sum \: by \: 2 \: and \: the \: result \: to \: the \: {x}^{2} and \: subtract \: it \: from \: the \: product \\ in \: this \: case. \: our \: sum \: is \: 2 \\ f(x) = ({x}^{2} \times \frac{2}{2} ) + (17 - \frac{2}{2} ) \\ f(x) = {(x + 1)}^{2} + (17 - 1) \\ f(x) = {(x + 1)}^{2} + 16[/tex]
A figure has been dilated from the origin by a scale factor of one seventh. if another dilation from the origin maps the dilated image back
onto the original figure, what is its scale factor?
Answer:
its scale factor is 3
Step-by-step explanation:
plz mark brainliest
To map the dilated image back onto the original figure, the scale factor needed is 7.
Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, reflection, translation and dilation.
Dilation is the increase or decrease in the size of a figure by a factor.
If a figure is dilated from the origin by a scale factor of one seventh, it is given by:
(x, y) ⇒ [(1/7)x, (1/7)y]
To map the dilated image back onto the original figure, the scale factor needed is 7. Hence:
[(1/7)x, (1/7)y] ⇒ (x, y)
Find out more at: https://brainly.com/question/11707700
What is the probability of picking a yellow marble and a blue marble of the yellow marble is replaced ?
Answer:
50%
Step-by-step explanation:
4xr=14 pls i need help.
Answer: x =7/2 or r = 7/2 so this means there the same.
Step-by-step explanation:
_________
[tex] \: [/tex]
4 × r = 14
4r = 14
r = 14/4
r = 7/2
r = 3½ or 3,5
There are 230 students in the six grade and 1/5 of them have green eyes how many six graders have green eyes
Answer:
46 of the sixth graders have green eyes.
Step-by-step explanation:
This question is asking what number of the 230 sixth graders have green eyes.
We know that one out of every five of them, or 20%, have green eyes.
1/5 = 0.2
If we multiply 0.2 by the total number of sixth graders, that leaves us with 46, meaning that 46/230 sixth graders have green eyes.
I hope this helps!
3(2ax-10)=24x+5b
work out the values of a and b
Answer:
a=4
b=-6
Step-by-step explanation:
3(2ax-10)=24x+5b
6ax - 30 = 24x + 5b
6a = 24
a = 4
5b = -30
b = -6
check: 3(2*4*x - 10) = 24x - 30 = 24x + 5 * (-6) = 24x - 30
Work backwards using the Distributive Property.
8(2) + 6(2) =
O 6(8+2)
O 8(2 +6)
O (8+6)2
O 2(6+2)
Hong made $323 for 17 hours of work
At the same rate, how much would he make for 7 hours of work
Answer:
$153
Step-by-step explanation:
323/17=19
19x7=153
Plz help! I really need this!
Answer:
x=16
Step-by-step explanation:
the remaining angle for thw triangle is found by subtracting the already shown angles from 180 (the angle some of a triangle) which happens to be 96 to get 84 but now you need to subtract 84 from 180 to find the angle on the other side of line because lines have a total angle measurement of 180 but we already kbow what this get's us because it's 96 now we devide 96 by 6 to get 16 our answer.
Solve for m: 63 + 91 + 3m > 180
Answer:5
Step-by-step explanation:
Answer:
Inequality- m>26/3
Interval- (26/3,∞)
Step-by-step explanation:
I hope that this helps..sorry it took a minute
Which point is coplanar with C, F, and G in the diagram below?
1. H
2.E
3.B
4.D
Step-by-step explanation:
The only face of the cube that has all the points C, F and G is the face CFGD on the right facing outwards.
Hence point D must be coplanar as it is on the same face.
Point D is coplanar with C, F, and G in the diagram of rectangular prism option (4) D is correct.
What is a rectangular prism?It is defined as the six-faced shape, a type of hexahedron in geometry.
It is a three-dimensional shape. It is also called a cuboid.
It is given that:
The rectangular prism is given in the picture.
The rectangular prism is a three-dimensional figure.
As we know, geometry can be defined as the branch of mathematics that is concerned with the size, shape, and orientation of two-dimensional figures.
The cuboid can be defined as a six-faced shape, a type of hexahedron in geometry. It is a three-dimensional shape.
Thus, point D is coplanar with C, F, and G in the diagram of rectangular prism option (4) D is correct.
Learn more about the rectangular prism here:
brainly.com/question/21308574
#SPJ2
Points and Klie on the same line, as shown on the coordinate plane below.
Answer ALL 3 questions. You can type your answers in the box or upload pictures of our work
A) What is the slope of the line passing through points J and K! Show or explain all your work ,
9514 1404 393
Answer:
1/2
Step-by-step explanation:
The slope can be found from the slope formula:
m = (y2 -y1)/(x2 -x1)
m = (5-3.5)/(6 -3) = 1.5/3 . . . . from the marked points
m = 1/2
The slope of the line through J and K is 1/2.
A rectangle is made up of green and red tiles. the ratio of green tiles to red tiles is 3:4. Which of the following could be the number of green tiles in the rectangle?
Answer:
H) 24
Step-by-step explanation:
24 is the only number that is divisible by 3.
CHECK:
3 x 8 : 4 x 8
24:32✔
(You can try dividing '3' by the other numbers to also check your answer)
Hope this helped ^^
