The Swiger family recycles about 15 pounds of waste a week. This is 2/5 of the total waste a week. How many pounds of waste does the family produce each week? (Step by step explanation)
Answer: 37.5 lb/wk
Step-by-step explanation:
Let X be the total amount of waste. We are told that (2/5) of X is 15 lb/wk.
(2/5)X = 15 lb/wk
X = (5/2)*(15lb/wk)
X = (75/2) il/wk
X = 37.5 lb/wk
m^ 2 + m − 90 factorize
Answer:
(m+10)(m-9)
Step-by-step explanation:
To factor this equation we want to find two numbers that multiply to -90 but also add/subtract to 1.
Those two numbers are 10 and -9 (10×-9=-90, 10-9=1)
Answer:
[tex](m-9)(m+10)[/tex]
Step-by-step explanation:
When you are given an expression in this format
[tex]ax^2+bx+c[/tex]
You must find two numbers that add up to b while the product is c.
You do trial and error to figure it out for your equation.
[tex]m^2+m-90[/tex]
Hmm... what two numbers add up to 1 and multiplied together equal -90.
Start off with pairs that can equal 90.
45 2
18 5
9 10
Ok, well 45 * 2 does equal 90 but 45 + 2 = 47and 45 + -2 = 43 but there's no way I can make it equal to 1. Next!
18 * 5 equals 90 but 18 + -5 = 13 and 18 + 5 = 23, I can just tell that there's no way I can make this equal to 1.
9 * 10 equals 90, 9 + 10 = 19 but 9 + -10 = -1. Now, that's interesting, We have -1 but we need 1. All we have to do is flip the order. 10 + -9 = 1. And -9 * 10 = -90, PERFECT!
Now use the two numbers and put it in factored form.
[tex](m-9)(m+10)[/tex]
please help me due soon
Answer:
- 7.2
Step-by-step explanation:
it is division and we need to take the reciprocal and multiply it will be -9/5. we need to simplify leaving us -7.2
If 2 angles in a triangle are 71 degrees and 56 degree, what is the measure of the third angle?
Answer:
53
Step-by-step explanation:
Sol'n
Let the remaining angle of a triangle be x.
x+71+56=180 (Sum of angles of a triangle is 180°)
or, x+127=180
or, x=180-127
.:, x=53°
.:, The measure of third angle is 53°
I need help with this question
Answer:
ijjjjjjjhgd ghhhh gghh
1.2 1,4
find area and perimeter
Answer:
Area = 18×(6+9) + (11×9)
= (18×15) + 99
= 270 + 99
= 369m²
Perimeter = 2(18+11) + 2(15)
= 2(29) + 30
= 58 + 30
= 88m
Erika created a scatterplot representing the height a plant grew after a certain number of hours of sunlight. The plant height was plotted on the horizontal axis. Which statement best describes how she should draw her line of best fit? A. The line of best fit will be horizontal. B. The line of best fit will be vertical. C. The line of best fit will increase from left to right. D. The line of best fit will decrease from left to right.
Answer:
B
Step-by-step explanation:
The line of best fit should be vertical. This answer may not be correct.
The correct statement is statement B that is the line of best fit will be vertical.
What is a scatter plot ?
A scatter plot is a graph in which the values of two variables are displayed along two axes, and any correlation is revealed by the pattern of the resulting points.
It is given that , after a particular amount of hours of sunlight, Erika made a scatterplot showing the height that a plant increased to. On the horizontal axis, the plant height was shown.
We know that in a scatter plot , the values of two variables are displayed along two axes. As the plant height was shown on the horizontal axis. The other value which is amount of hours of sunlight will be on the vertical axis.
So , the statement which best describes how Erika should draw her line of best fit i.e., the line of best fit will be vertical.
Therefore , the correct statement is statement B that is the line of best fit will be vertical.
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What is the slope of (-5,7) and (1,1)
What is the slope of (2,6) and (8,4)
Answer:
(1) -1
(2) -1/3 or -1.333333333333333333333333333333333333to infinity
Answer:
(-5,7) and (1,1)
Slope=-1
(2,6) and (8,4)
Slope=-2/6
20 is 4/7 of what number?
Evaluate the function.
a ladder is leaning against a house. if the top ladder is 12 feet above the ground and 3 feet away from the house, what is the angle of inclination?
Answer:
60 deegrees
Step-by-step explain
what is 4000ml to dm
Answer:
4
Step-by-step explanation:
Answer:
4 cubic decimeters.
....
Evaluate the expression when c=4 and d=8.
5c+d
I think it is helpful for you!!!!
Please make me brainliest..
Answer:
5c + d
putting value of c and d,
5 × 4 + 8
20 + 8
28
HOPE THIS HELPS YOU
HAVE A NICE DAY
Help please also give an explanation
Quinn and Logan solved the equation 8(x-5)=8x+40. Quinn said the answer is x=0, Logan said the answer has infinitely many solutions. Who is right? Explain your answer.
Answer:
Neither of them are right
Step-by-step explanation:
First, let's actually solve this equation:
8 ( x - 5 ) = 8x + 40
Distribute on the left:
8 ( x - 5 )
( 8 x X ) + ( 8 x ( -5 ) )
8x - 40
8x - 40 = 8x + 40
Add 40 to each side:
8x = 8x + 80
Subtract 8x from both sides:
0 = 80
0 ≠ 80
There are no solutions to the equation
Answer:
joe
joe mama
++
Step-by-step explanation:
Find the equation of the line.
A line that is parallel to the graph of 2x+3y=5 and contains the point (3,1)
Answer:
2x + 3y = 6
Step-by-step explanation:
The equation of a line in slope- intercept fprm is
y = mx + c ( m is the slope and c the y- intercept )
Given
2x + 3y = 5 ( subtract 2x from both sides )
3y = - 2x + 5 ( divide terms by 3 )
y = - [tex]\frac{2}{3}[/tex] x + [tex]\frac{5}{3}[/tex] ← in slope- intercept form
with slope m = - [tex]\frac{2}{3}[/tex]
Parallel lines have equal slopes, then
y = - [tex]\frac{2}{3}[/tex] x + c ← is the partial equation
To find c substitute (3, 1 ) into the partial equation
1 = - 2 + c ⇒ c = 1 + 2 = 3
y = - [tex]\frac{2}{3}[/tex] x + 3 ( multiply through by 3 to clear the fraction )
3y = - 2x + 6 ( add 2x to both sides )
2x + 3y = 6 ← equation of parallel line
What is the slope of the line that passes through the points (-3, 1) and (1, — 5) ?
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0
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1
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3
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Answer:
-3/2
Step-by-step explanation:
-5-1/1-(-3)
-6/4
-3/2
Help meeeeeeeee plsss
Answer:
Continuous
Step-by-step explanation:
6x + 19x =
A. 25x
B. 25 x 2
C. 26 x
D. 26x2
Answer:
25x
Step-by-step explanation:
6x and 19x are like terms so we can add them
6x+19x = 25x
1/ A submarine dives to 560 meters below water level, it then dives a further 750 metres to take more deep sea pictures. What is the total dive depth?
How do you find percentages?
Answer:
obtained number divided by total number multiply by 100%.
· Definition of Percentages
Mathematically, percentages are either numbers or ratios that are expressed as fractions of 100. They are usually denoted as "%" or simply "percent." They may be further represented as simple fractions or as decimal fractions. An example of a percentage is 65% or 65 percent. The term percentage was formed from two words, “per” and “cent.” Cent is a word with Latin and French origin that means "hundred," and "percent" means "per hundred." For example, 90 percent (or 90%) means 90 out of 100 while 50 percent (or 50%) means 50 out of 100 or half of a whole.
1. Determine the initial format of the number to be converted to a percentage
The number to be converted to a percentage can either be in the decimal or fraction format. A good example of a decimal number is 0.57, which may be the calculated ratio of the values you are comparing, while an example of a fraction is 3/20. The initial format will determine the next mathematical process to be carried out on the number.
2. Carry out a mathematical process on the number to be converted to a percentage
If the number to be converted to a percentage is a decimal number like 0.57, you may not need to do anything to it before you go to the next step. However, if it is a fraction like 3/20, you should first divide the numerator (3 in this case) by the denominator (20 in this case) to get a decimal number.
3. Multiply the result of the mathematical process by 100
If you are required to convert a decimal number like 0.57 to a percentage, you are to simply multiply it by 100. That is, 0.57 x 100 = 57. Therefore, 0.57 as a percentage = 57% or 57 percent. Another example of converting a decimal to a percentage is 0.03 x 100 = 3% or 3 percent.
However, if you are required to convert 3/20 to a percentage, you should divide 3 by 20 = 0.15. Then multiply 0.15 by 100 = 15% or 15 percent.
Another example is if you are to convert 5/10 to a percentage, you should divide 5 by 10 = 0.5. Then, multiply 0.5 by 100. Therefore, 0.5 x 100 = 50% or 50 percent.
Find the value of x
x - 2/3 = x - 6
Simon bought a $48 table on sale at 30% off.
Select from the drop-down menu to correctly complete the sentence.
The best estimate for the discount can be found using the expression
Answer:
he paid $33.60
Step-by-step explanation:
the expression is 48(.70)
70% is how much is still paid so multiply it and you get the answer.
this applies to any question like this.
I need help please been getting all the answers wrong
Answer:Question? :c
Step-by-step explanation:
Answer:
what's the problem?
ma'am/Sir
The price of an item is $45.00. After a discount, the price is $38.25. What is the percent of the discount?
Answer correctly and I will give brainliest
Answer:
=15
Step-by-step explanation:
45-x% *45=38.25
(-45) x/100=38.5-45
(-45)x/100=(-6.75)
x=6.75 * 100/45
=15
The percent of the discount is 15.
It is required to find the percent of the discount.
What is percentage?A part of a whole expressed in hundredths a high percentage of students attended. Also the result obtained by multiplying a number by a percent the percentage equals the rate times the base.
Given:
Let the discount percent be x%
When the price of $45 is reduced by x%, we get $38.25.
So,
45 − x % ∗ 45 = 38.25
− 45 x /100 = 38.25 − 45
− 45 x /100 = − 6.75
x = 6.75 ∗ 100 /45
x= 15
Therefore, the percent of the discount is 15.
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answer the question below
Answer:
3/8 of a pizza or 3 slices
Step-by-step explanation:
First, make the numerator of 3/4 an even number that can be divisible by 2 by multiplying the numerator and denominator by 2.
3/4 = 6/8
Then multiply 6/8 by 1/2 to get 3/8
A group of 7 students was asked,
"How many hours did you watch
television last week?" Here are
their desponses.
7, 10, 5, 6, 19, 8, 17
Find the mean number of hours for
these students.
If necessary, round your answer to
the nearest tenth.
Lenovo
Answer:
10.3 hours
Step-by-step explanation:
(7+10+5+6+19+8+17)/7
= 72/7
= 10.3
can someone help me understand how to find a slope?
the following question:
find the slope of 8,10 and 2,17
Answer:
-7/6
Step-by-step explanation:
I have plotted 8,10 and 2,17 on a grid and connected them with a line to help visualize the slope of the line we are trying to find.
The answer can also be written as a decimal as shown below, but it is neater to use the fraction.
Calculate 36%of $4500
Answer:
1620
Step-by-step explanation:
0.36*4500=1620
WILL MARK BRAINLIEST!
simplify −4x² y+5x+5−3x+4x² y−8
Answer
2x-3
Step-by-step explanation:
given:
−4x² y+5x+5−3x+4x² y−8
=−4x² y+4x² y+5x-3x+5-8
=2x-3
hope it helps!!
Let's simplify step-by-step.
(−4x2)(y)+5x+5−3x+4x2y−8
=−4x2y+5x+5+−3x+4x2y+−8
Combine Like Terms:
=−4x2y+5x+5+−3x+4x2y+−8
=(−4x2y+4x2y)+(5x+−3x)+(5+−8)
=2x+−3
=2x-3
Therefore the answer is 2x-3Factorise x²-4y² mmmmm
Answer:
(x + 2y)(x − 2y)
Step-by-step explanation:
x² - 4y²
(x + 2y)(x − 2y)