Answer:
do addof. old books and new
which equation is true for y?
Given the line y=3/5x+2 find the perpendicular line passing through the point (12,-7)
Answer:
y=-5/3x+13.
Step-by-step explanation:
As a line that is perpendicular to anoher line has a slope that is the negative reciprocal of the line's original slope, we know that the slope of our new line is -5/3. As it passes point (12, -7), we can use the point slope formula which is y-y1=m(x-x1). So plug in, y+7=-5/3(x-12) and that gives us y+7=-5/3x+20 which gives our final answer of y=-5/3x+13.
Karen is using a number line to represent the doors in the school hallway. She labels 0. 25, 0. 5, and 0. 75 on the number line as a scale reference. Where should Karen place a mark to represent a door that is 0. 7 from the start of the hallway? Explain. A. 0. 7 is less than 0. 75, so it is a little to the left of 0. 75. B. 0. 7 is less than 0. 75, so it is a little to the right of 0. 75. C. 0. 7 is greater than 0. 75, so it is a little to the right of 0. 75. D. 0. 7 is greater than 0. 75, so it is a little to the left of 0. 75
Answer:
A
Step-by-step explanation:
prove that y=2x^2-6x+7 and y=x^2-2x+3 touch each other and find the point of contact
Answer:
See below ~
Step-by-step explanation:
We need to prove they are equal.
Equate the values to each other.
2x² - 6x + 7 = x² - 2x + 3x² - 4x + 4 = 0(x - 2)² = 0x = 2Now input the x-value in the 1st equation.
y = 2(2)² - 6(2) + 7y = 8 - 12 + 7y = -4 + 7y = 3Now input the same in the 2nd equation.
y = (2)² - 2(2) + 3y = 4 - 4 + 3y = 3Since the same x-value, on inputting in both equations, give the same y-value, it is proved they touch each other.
Point of Contact
(x, y)(2, 3)The ordered pairs for two points are listed in the table. What is the equation, in slope-intercept form, of the line that contains these points? A. y = x + 1 B. y = -x – 1 C. y = -x + 1 D. y = x – 1
X Y
1 -2
4 -5
Answer:
B. y = -x – 1
Step-by-step explanation:
calculate slope =
y2-y1 = -5- (-2) = -3
x2-x1 = 4 - 1 = 3
m (slope) = -3/3 = -1
using points (1,-2) for calculating y-intercept:
y = mx + b
-2 = -1(1) + b
-2 = -1 + b
-1 = b
b = -1
answer is B y= -x - 1
jane can do a job in 3 hours, while gary can do the same job in 2 hours. if jane works alone for an hour before gary helps her how long will it take them to finish the job together
Answer: 2hrs?
Step-by-step explanation: 3-2=1+1 hour she took alone = 2hrs
Answer:
3 hours as Jane will take 1 hour before Gary and Gary will work for 2 hours. I think
What is the greatest common factor of 13x and 14x^3?
Answer:
x
Step-by-step explanation:
13 and 14 share no factors except for 1Both have x in them, so the answer is xwrite an equation that gives the proportional relationship of the graph.
A. y=1/4x
B. y=3x
C. y=4x
D. y=12x
Answer:
y=3x+4
Step-by-step explanation:
This is one equation.
The distance between city A and city B is 22 miles. The distance between city B and city C is 54 miles. The distance between city A and city C is 51 miles.
What type of triangle is created by the three cities?
an acute triangle, because 222 + 542 >512
an acute triangle, because 222 + 512 >542
an obtuse triangle, because 222 + 542 >512
an obtuse triangle, because 222 + 512 >542
Answer:
54 is the hypotenuse due to being the longer side(s).
54 ^2=2916 / 51^2=2601 / 22^2=484 = 2916=2601+484 // 22^2+51^2>54^2
Option B.
1
2
3
4
5
6
7
8
9
10
Which equation can be used to find the unknown length, b, in this triangle?
5 in.
4 in
=
O 42+ b2 = 52
O 42-62 = 52
O 52 +42 – 52
Answer:
this question isn't quite clear, is the diagram of the triangle necessary for me to answer this question ?
Step-by-step explanation:
but by simple analysis,
since the "unknown" is b
option (a) which is 42 + b2 = 52 is the best equation.
because we are looking for the value of "b", therefore there should be letter "b" in equation we're going to use. hope you understand...
Hope this helps .
How many times greater is 8.4 x 109 than 1.5 × 10²?
Answer:
900.6 times greater!
Step-by-step explanation:
8.4 x 109 = 915.6
10 by the power of 2 is 100 so;
1.5 x 100 = 15
915.6 > 15
915.6 - 15 = 900.6
Carl has 9 1/2 cups of juice for a party. If each party goer gets exactly 3/5 cup of juice each, how many party goers will get their 3/5 cup of juice
Answer: 158
Step-by-step explanation:
Okay so the total is 9 5/10.
Each party goer needs 6/10
So 95/10 / 6/0=. 95/10x10/6
=950/6 = 158.
Find the area of the regular polygon
Answer:
891.75 sq.ft is the area of the polygon
Step-by-step explanation:
9.2^2 + 10^2= 184.64
√184.64= 13.59 feet
area of regular octagon=A=2(1+√ 2)a^2
A= 2(1+√2)13.59^2
A=891.75 sq.ft(approx)
Kyle baked 20 cookies. If
1
4
of the cookies are chocolate chip, how many chocolate chip cookies did he bake?
Answer:
5
1/4 of 20 is 5
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
20x1/4 or 20÷4=5
Derek is conducting a survey in his school about extracurricular activities. Choose three things he should do to get a representative sample and check that it is representative. CLEAR CHECK Derek should ask people what grade they are in. Derek should randomly choose people only in his grade. Derek should ask people their age. Derek should ask people what their favorite color is. Derek should survey everyone in the school. Derek should offer the survey in multiple languages. NEXT CLOSE Reference calculator formulas glossary CLOSE Language Changes the language of the audio snippets and the glossary ENGLISH
Yh I got one wrong but it's a little light green :) Hope this helps!
5 positive integers are arranged in ascending order, as follows: 7 , 8 , 8 , 10 , x The median and the range are equal. Find x .
Answer:
6.6, 7, 8, 8, 10
Step-by-step explanation:
7+8+8+10+X = 33/5
= 6.6
X= 6.6
hard question help me
Pls help no wrong answers
Answer:
[tex]x\sqrt{2} = c[/tex]
Step-by-step explanation:
The Pythagorean theorem tells us that [tex]a^2+b^2=c^2[/tex], where a and b are the legs of a right triangle. If the length of each leg is x, we know by applying the theorem that [tex]x^2+x^2=c^2[/tex], so [tex]2x^2=c^2[/tex]. Applying the square root on both sides we get [tex]x\sqrt{2} = c[/tex]
5x^(-2)-17x^(-1)+6
for the love of god help please
Answer:
Pfffttttt- Amateurs, it is quite simple really. Take a nice long look. In the picture is he answer. And I was just joking around, even I had to use a calculator for the answer.
Step-by-step explanation:
Put the x's together, the negatives and the positives.
The population of New York City is about 8.4 × 10^6. What is 1/4of the population?
A. 2.1 x 105
B. 2.1 x 106
C. 4.2 x 105
D. 4.2 x 106
Answer:
2.1 x 10^6
Step-by-step explanation:
8.4 x 10^6 / 4 = 2.1 x 10^6
How do you solve for 4, 5, or 6?
Answer:
see images
Step-by-step explanation:
For all of these questions it helps to know the special right triangle, the 30°-60°-90° triangle. There is a special shortcut to find the sides of the 30°-60°-90° triangle.
For question4 and 5, these are equilateral triangles so the angles are all 60° So if you drop the height, it makes two 30°-60°-90° triangles. ***The short leg is HALF the hypotenuse or the hypotenuse is DOUBLE the short leg. The long leg is the short leg × sqroot3.***
This shortcut, special rt triangle info is used in all three of your questions. See image. Then you will have base and height or the apothem and side length for the Apothem Area formula:
A = 1/2 a•s•n
where a is the apothem, s is the side length and n is the number of sides. It looked like you already used this formula. See image.
can you help me i kinda in a hurry please
Answer:
x y
2 1
4 2
6 3
Step-by-step explanation:
For each x-value, y is half of it.
Divide each x-coordinate by 2 to find the corresponding y-coordinate.
x y
2 1
4 2
6 3
Step-by-step explanation:
Since y=1/2(x)
x y
2 1
4 2
6 3
Fill in this order
I hope it helped you
If x+3/3=y+2/2, then x/3=___
Answer:
y/2
Step-by-step explanation:
(x+3)/3 = (y+2)/2
x/3 + 1 = (y+2)/2
x/3 = (y+2)/2 - 1
= (y+2-2)/2
= y/2
Are the two cones congruent? explain and include details to support your claim.
The two cones are not congruent because one of the cones is oblique in nature.
What are congruent shapes?Congruent shapes are identical in size and shape. To put it another way, if you hold an object or element in a mirror, the picture you get is congruent to the object.
However, two figures may seem to be identical, but one side or angle in one figure may deviate significantly from the other. The easiest technique to assess sides and angles to check if they are equivalent or congruent is to use markings on figures.
When we apply that technique to the two figures, we realized that the two cones are not congruent because one of the cones is oblique in nature, this resulted in a difference in the slant height of the cones.
Learn more about congruent figures here:
https://brainly.com/question/25837892
Matching equations with diagrams & finding unknown angles #3
Which equation(s) and angle measurements go with the
diagram. Choose ALL that apply.
Find the value of a.
(Select all that apply.)
please help
Answer: a+51=90, a+51+90=180, 39
Step-by-step explanation:
a+51=90 works because the angles add to form a right angle.
a+51=180 does not work because the angles add to form a right angle, not a straight angle.
a+51+90=180 works because all those angles add to form a straight angle.
a+90=180 does not work because the unknown in this situation refers to a+51, not just a.
Solving the equation, we get a=39, so 39 is also an answer.
whats 1753x87694-463684=
help please
Answer:
65569898
Step-by-step explanation:
1753x87694=66033582
66033582-463684=65569898
I need help ASAP please!!!!!!
Answer:
d
Step-by-step explanation:
surface area of cylinder=2πr(r+h)
2*3.14*4(4+7)
25.12*11
276.3in²
Answer:
Step-by-step explanation:
2πrh+2πr^2 is the formula for finding the surface area of a cylinder.
Since the question said to use 3.14 for pi,
2 * 3.14 * 4* 7 + 2*3.14*16
= 175.84 + 100.48
= 276.32 in^2
So, the answer is d, 276.3 (rounded to 1 decimal place)
Find the original price of a salt lamp that is $45 after a 70% discount.
Answer:
$150.00
Step-by-step explanation:
original price = sale price/1-discount
OP=45/1-0.7
OP=45/0.3
OP=150
The daily number of miles driven by a bus driver during a week are 50, 65, 78, 54, 53, 61, 79, and 78.
Which statement is true?
Both the mean and mode are appropriate measures of center.
Both the median and mode are appropriate measures of center.
Both the mean and median are appropriate measures of center.
The mode is the only appropriate measure of center.
Answer:
C Both the mean and median are appropriate measures of center.
Step-by-step explanation:
{32,33,34,34,36,38,38,38,40,42} what is the mean of the data set?
Answer:
add up all the numbers and multiply it by 32
Step-by-step explanation:
add up 32 33 34 34 36 38 38 38 40 42 amd then multiply that answer by 32