I like to use the way flip the second fraction then cross cancel then multiply.
(-2/7)/(-8/21)
= (-2/7)(-21/8) (cross cancel) so 8 / 2 = 4 and 21 / 7 = 3. The 7 and 2 becomes 1.
= (-1/1)(-3/4)
= 3/4 or decimal 0.75
Answer:
3/4
Step-by-step explanation:
(-2/7) / (-8/21)
= (-2/7) * (-21/8)
=(-2*-21) / (7*8)
=42/56
= 3/4 -simplified
Troy studies porcupines and wants to estimate the population in a certain region. Troy catches 36 porcupines, marks them, and releases them. Then later, Troy catches 450 porcupines and observes that 18 of them are marked. To the nearest whole number, what is the best estimate for the porcupine population?
A Group of scientists caught and tagged porcupines=140 A week later the scientists counted the porcupines=180
look at screenshot if you answer correct I will mark brainliest help now.
Answer:
Step-by-step explanation:
point-slope form: y-y₁=m(x-x₁)
x₁= -5
y₁= 3
m= 5
y-3=5(x+5)
Las propiedades de las multiplicaciones nos llevaran a igualar distint
algebraicas para determinar su equivalentia,
1. En la figura 2.1 se muestran dos formas de descomponer el drea de
cuyos lados miden 35 u y 22 u. Completalos con las medidas que fa
a) Cual es el area total de los rectangular?
b) Calcula el area de las secciones que componentcada rectangula
c) Que relacion hay entre el area total de cada rectangular y las areas
nes que los component
35 u X 20 u
30 u x 20 u
Answer:
i think it would be c
Step-by-step explanation:
You have 400 euros. What is this amount in US dollars?
Help me pls i will mark the best answer brainlist
Answer:
452.38 US dollars.
Step-by-step explanation:
OMG help.
What is 1+1?
Answer:
2
Step-by-step explanation:
Hahaha thank you
Answer:
2
Step-by-step explanation:
1 plus 1 is two use ur fingers
What is the measure of angle L
Answer:
∠L=23°
Step-by-step explanation:
(6x-5)+(x+9)=(9x-24) (ext angle of triangle)
6x-5+x+9=9x-24
7x+4=9x-24
7x-9x=-24-4
-2x=-28
2x=28
x=28÷2
=14
Hence, ∠L = (x+9)°
= (14+9)°
= 23°
The difference of 7 and the square of a number
Answer:
7 - [tex]x^{2}[/tex]
Step-by-step explanation:
This is the answer because:
1. "Difference" means subtraction
2. The statement basically is saying, what is 7 subtracted by the square of x
3. That simplifies to 7-x^2
Hope this helps!
Hi there! (:
The difference of means we subtract:
7-f² (let the number be f)
Hope it helps!
~An excited gal
#StayJoyful
[tex]SparklingFlower[/tex]
4. Find the mode of the set of data 12, 13, 18, 10, 13, 18, 12, 10, 18, 15. *
1 point
13
10
15
O
18
Answer:
18
Step-by-step explanation:
18 appeared the most
What is the slope of this line?
y=−13x+14
A. -1/3
B. 1/4
C. 1/3
Answer:
see below
Step-by-step explanation:
y = -13x+14
This is in slope intercept form
y = mx+b where m is the slope and b is the y intercept
The slope is -13 and the y intercept os 14
If you mean y = -1/3x + 1/4
The slope is -1/3 and the y intercep is 1/4
Answer:
-1/3 is the slope because the equation is in a form of y =mx + c, where m is the slope
Step-by-step explanation:
What is the slope of this line?
Answer:
y= -3x -3
Step-by-step explanation:
Which of the following can be the sides of a right angled triangle?
(i) 1.5 cm, 2 cm, 3 cm (ii) 6 cm, 1.1 cm, 6.1 cm
Answer:
(ii) 6 cm, 1.1 cm, 6.1 cm
Step-by-step explanation:
Knowing that all right triangles obey the Pythagorean Theorem, we can test both sets of numbers. The longest of the 3, the hypotenuse, is substituted to the c value of the equation a^2 + b^2 = c^2. If the equation is still true after substituting and simplifying both sides, that combination of triangle lengths is the correct answer. In this case, 6^2 + 1.1^2 and 6.1^2 are both equal to 37.21, so the second set is correct.
HELP ANSWER ASAP
ANSWER???
A proportional relationship means that two or more things are directly proportional, or that the quantities increase or decrease according to equivalent ratios. We can state this proportional relationship with the formula, y = kx. Y and x here are the quantities that are proportional to each other.
PLZ HELPP I NEED THIS ASAP ROUND TK THE NEAREST TENTH HELP ASAP GIVING BRAINLEST
Answer:
3.9
Step-by-step explanation:
A car travels 20miles be in 1/2 hour at constant speed is traveling at the same speed as a car that travels 30 miles in 3/4 hour at a constant speed.explain or show why
Answer:
It is true that both cars are traveling at the same speed.
Step-by-step explanation:
Given that car A travels 20 miles over half an hour, we know that this car is traveling at a speed of 40 miles per hour.
Car B travels 30 miles in 3/4 of an hour, let us set up a proportion to solve whether or not Car B is traveling at the same rate as Car A
30 miles / (3/4 hour) = x miles / 1 hour Cross multiply
30 = (3/4) x Divide both sides by (3/4)
40 = x
Therefore, both Car A and Car B are traveling at the same rate.
Step-by-step explanation:
I NEED HELP THIS HW IS DUE TODAY
Find the equation of the line that passes through (-3,1) and is parallel to y = 1 − 2 x . Leave your answer in the form y = m x + c
Answer:
y = - 3x + 7
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
3x + y - 1 = 0 ( subtract 3x - 1 from both sides )
y = - 3x + 1 ← in slope- intercept form
with slope m = - 3
Parallel lines have equal slopes, thus
y = - 3x + c ← is the partial equation
To find c substitute (1, 4) into the partial equation
4 = - 3 + c ⇒ c = 4 + 3 = 7
y = - 3x + 7 ← equation of line in form y = mx + c
I NEED HELP THIS HW IS DUE TODAY
Is it possible to make a triangle with sides lengths of 12, 16 and 20? If the answer is yes, is the triangle a right triangle?
Answer: Yes it can form a triangle and its a right triangle.
Step-by-step explanation:
Using the Pythagorean theorem we can see that the longest side (20) is our hypotenuse. From there you just check if its true. :)
If each unit represents 3.2 miles, what us the distance from school to the football field?
a/6-1/2=1/3 thats 7 grade math
Answer: a = 5
Step-by-step explanation:
a/6-1/2=1/3
a/6 = 1/3 + 1/2
a/6 = 2/6 + 3/6
a/6 = 5/6
a = 5
Check:
5/6-1/2 = 1/3 ?
5/6 - 3/6 = 1/3?
2/6 = 1/3 ?
1/3 = 1/3 YES
Answer:
a = 5
Step-by-step explanation:
a/6 - 1/2 = 1/3
=> a/6 = 5/6
=> a = 5
Hoped this helped.
helpppp
simplify √5 × √3
Answer:
√15
Step-by-step explanation:
When you multiply surds:
multiply the numbers inside the square roots i.e. √(5 × 3) = √15simplify if possible (not possible in this case)Hope this helps!
ANSWER PART B
Sia designs a board game in which a card is drawn on each turn.
• A blue card means move forward 4 squares.
• A red card means move back 6 squares.
Liam suggests adding some other cards to Sia's game
Part A
Liam explains that drawing a yellow card is equivalent to drawing a blue card followed by a red card. How many spaces forward or backward does a player move after drawing a yellow card? Justify your answer.
ANSWER PART B
How could Liam use red, blue, and yellow cards to describe each of the following motions? Write equations to support your answer. • A green card means move forward 2 spaces. • An orange card means move 8 spaces backward. • A purple card means move forward 10 spaces.
Answer:
Answer:Back 2
Step-by-step explanation:Blue + Red=-2
Step-by-step explanation:
After working for 6 hours kevin earned 51.00. what is kevin's unti rate
Answer:
Kevin's unit rate is 8.5. This means Kevin earns $8.5 ever hour.
Step-by-step explanation:
51.00/6.
Hope this helps! :)
Answer:
He earns 8.5 every hour.
Step-by-step explanation:
You would have to find how much he earns every hour
6:51, divide 6 on both sides
1:8.5, earns 8.5 every 1 hour.
30 - 6 (x + 3) + 2x = 8
Answer:
I believe the correct answer would be the first X=1 and the second X=1
Basically they both equal 1
Answer:
X=1
Step-by-step explanation:
Philip currently has $450 in his checking account. Each month Netflix withdraws $15 for dues. Which equation can be used to find y, the current amount in Philip's checking account after x number of months?
You are choosing between two health clubs Club A offers membership for a fee of $21 plus a monthly fee of $20. Club B offers
membership for a fee of $35 plus a monthly fee of $13. After how many months will the total cost of each health club be the same?
Answer:
$$x=5$$, so after five months the costs would equal each other
Step-by-step explanation:
i think pls mark brainliest
Help me please!
Bill is building a fence around his garden. For every 3 feet of fencing, the cost is $21.
Complete the table below showing the length of the fence and the cost.
Answer:
(cost ---> length)
35 ---> 5
49 ---> 7
56 ---> 8
70 ---> 10
Please Help Me Solve This! I Need Help Now!
Correct Answer = Brainliest
Answer:
Switzerland tickets: $13.53
Japan tickets: $ 17.36
Step-by-step explanation:
The sum of two consecutive odd numbers is 52.Using an algebraic equation
find the two odd numbers.
Answer: 25, 27
Step-by-step explanation:
52=x+x+2=50=2x=x=25
I am a student in 7th honers and was wondering if someone can help me learn the basics of pre-algebra because I understand none of it.
Answer:
I reccommend using an AoPS book. You can learn more at aops.com
Step-by-step explanation: