Answer:
80% is what he got on the test
is (-a + b)² = a² - 2ab + b² right or wrong, and why?
Answer:
[tex]\huge\boxed{\sf Right.}[/tex]
Step-by-step explanation:
[tex](-a+b)^2[/tex]
Let's apply the formula (x+y)² = x² + 2xy + y²
Here, x = -a and y = b
So,
= (-a)² + 2(-a)(b) + (b)²
= a² - 2ab + b²
Hence, it has been proved that (-a + b)² = a² - 2ab + b².
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Use the algebra tiles to help you solve the equation. 4x-2=10
Answer:
The solution to this equation is x=3
Step-by-step explanation:
In triangle QRS the measure of angle RSQ is 50 degrees , and the measure of angle QRS is 37 degrees. What is the measure of angle SQR in degrees?
Answer:
[tex] < rsq + < qrs + sqr = 180 \\ 50 + 37 + < sqr = 180 \\ < sqr = 180 - (50 + 37) \\ < sqr = 180 - 87 \\ = 93[/tex]
I hope it helps you
A town doubles its size every 35 years. If the population is currently 50000, we will the
population be in 140 years?
please help
I really need help
Help please (40 points)
Provide the missing statements and reasons for the following proof.
Theorem opposite slides of parallelograms are congruent
Answer:
See answer below
Step-by-step explanation:
R3: If parallel lines, then alternate interior angles is congruent
S4: AC ≅ AC
R5: ASA
What expression is equivalent too 3(-6h - 4) + 5h?
Answer:
-13h - 12
Step-by-step explanation:
3(-6h - 4) + 5h
-18h - 12 + 5h
-13h - 12
hope this helps! :D
have a miraculous day, and brainliest is immensely appreciated!! <3
what is 26x54 PLSSSSSSSSSSSS
Answer:
1404
Step-by-step explanation:
Answer:
1404
Step-by-step explanation:
If you need assistance with problems like these, try breaking it up!
Instead of 26*54, try doing 26*50 + 26*4
Having "wholer" numbers will help the process.
What is the slope of a line that is perpendicular to the line y = 1?
O-1
ОО
O 1
O undefined
Answer: D) Undefined
Explanation:
The equation y = 1 is the same as y = 0x+1
Match that to the form y = mx+b to see that the slope is m = 0
Any horizontal line has a slope of 0.
Notice that we cannot apply the negative reciprocal to this because 0 = 0/1 leads to 1/0 which is undefined
The slope of any vertical line is undefined because we have run = 0 and slope = rise/run = 1/0. The rise can be any number you want (it doesn't have to be 1) and we get the same result.
The slope of a line that is perpendicular to the line y = 1 is undefined.
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
The equation y = 1 is the same as y = 0x+1
Match that to the form y = mx+b to see that the slope is m = 0
Any horizontal line has a slope of 0.
y = 1 is an vertical line.
The slope of any vertical line is undefined because we have run = 0 and slope = rise/run = 1/0.
= Undefined
Hence, the slope of a line that is perpendicular to the line y = 1 is undefined.
To learn more on slope of line click:
https://brainly.com/question/16180119
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Two weeks ago,a bookstore sold 120 books Last,week,it sold 138 books.find the percent of increase in sales?
Answer:
15%
Step-by-step explanation:
[tex]\frac{138}{120}[/tex]×100=
1.15
115%
Increase in 15%
Find the value of x
Answer:
x = 17
Step-by-step explanation:
The hash marks indicate that the segment marked x+2 connects the midpoints of the sides of the triangle. Therefore, it is a "midline" and has half the length of the parallel base.
x +2 = 1/2(38)
x = 19 -2 . . . . . subtract 2
x = 17
tell me if right plz
Answer:
yes
Step-by-step explanation:
Use the distributive property to remove the parentheses.
-9(-6u+v-5)
I need help- I’ll get brainly list
Answer:
54u - 9v + 45
Step-by-step explanation:
distributive property
(-2,-4) reflected across the line y = -1
Solve for t. 3t - 18 = 4(-3-3/4t). t=
Answer:T=1
Step-by-step explanation:
Answer:
t = 1
Step-by-step explanation:
y/5 = 2/5 im not sure how to complete this question
Answer: y is 2
Step-by-step explanation:
[tex]\huge \bf༆ Answer ༄[/tex]
Let's solve for y ~
[tex] \sf \dfrac{y}{5} = \dfrac{2}{5} [/tex][tex] \sf y = \dfrac{2}{ \cancel5} \times \cancel5[/tex][tex] \sf y = 2[/tex]Value of y is 2
convert the following
1. 0.3 m
2. 37 cm
3. 3.3 cm
4. 4,000 dm
5. 6 hm
6.0.441 L
7. 24.96 L
8. 1,915 ml
9. 13.8 kg
10. 1,698 9
Answer:
I dont need
Step-by-step explanation:
what to convert
Acellus
Find the circumference of this circle
using 3 for n
C ~ [?]
3
C = 270
.
Please help with this !
Use substitution to solve each system of equations.
=++=
Answer:
I can only see =++= so please repost your answer so i can edit my answer as well
Step-by-step explanation:
Please help!! markup and markdown word problems.
1. Timmy wants to buy a scooter and the price was $50. When he goes to the store a second time, he found that price was marked down by 20%. What is the new price?
2. A football is selling for 35% off the original price. The original price was $60. What is the sale price of the football?
The new price of the scooter will be:
= $50 - (20% × $50)
= $50 - $10
= $40
The sale price of the football will be:
= 35% × $60
= $21
HELLPPPPPPP
please help
Answer:
i think that's A
I'm just guess
what does the expression 3(20+15) represent?
Answer:
It represents 3x20 +3x15
Step-by-step explanation:
The expression 3(20+15) represents 20+15 then multiplying it by three.
If you were to solve the expression, the answer would be 105.
20 + 15 = 35
35 x 3 OR 35(3) OR 35 ∙ 3 = 105
The students at the engineering conference ate more than 20 pizzas. The inequality x greater-than 20 represents the situation. Which graph represents the inequality?
A number line going from 15 to 25. An open circle is at 20. Everything to the right of the circle is shaded.
A number line going from 15 to 25. An open circle is at 20. Everything to the left of the circle is shaded.
A number line going from 15 to 25. A closed circle is at 20. Everything to the right of the circle is shaded.
A number line going from 15 to 25. A closed circle is at 20. Everything to the left of the circle is shaded.
Answer: Image A
Step-by-step explanation:
math
Answer:
A
Step-by-step explanation:
DETERMINE WHICH OF THE LINES ARE PARALLEL OR PERPENDICULAR thx sm
Answer:
Parallel: a and b
Perpendicular: none
Step-by-step explanation:
You are given the coordinates of each line.
To check if they are parallel or perpendicular, need to find slope.
In this case we can use :
m = (y2 - y1) / (x2 - x1)
So for line a:
(1,5) and (-2, -4)
slope = (-4 - 5) / (-2 - 1)
slope = -9/-3
slope = 3
Line b:
(3, 2) and (1, -4)
slope = (-4 - 2)/(1 - 3)
slope = -6/-2
slope = 3
Line C:
(6, 1) and (-4, 2)
slope = ( 2 - 1) / ( -4 -6)
Slope = 1/ -10
slope = - 1/10
Line A and B are parallel because their slopes are the same.
To check if they are perpendicular, we need to know if their slopes are reciprocals.
Here none of them are perpendicular to each other
Jeremy brought a sandwich and a drink that cost him $7. His drink cost $1.75. Solve the equation 7=s + 1.75 to find s, the cost of Jeremy’s sandwich.
Answer:
s= $5.25
Step-by-step explanation:
7-1.75=5.25
7=5.25+1.75
s=$5.25
A school communoty had planned to reduce the number of grade 9 students per class room by constructing additional class room however they constructed 4 less rooms than they planned As the result tye number of students per class was 10 more than they planned if there are 1200 grade 9 students in the school determine the current number of class rooms and the number of students per class (I need instant help)
Here is my solution. I hope it is helpful.
A line through which two points would be perpendicular to the line y = 2/5x - 5/2 ?
Answer:
Step-by-step explanation:
c
Sewing machine cost $162.40 after a price increase of 16% find the price before the increase
Answer:
$140
Step-by-step explanation:
100/116×$162.40=$140
Answer:
Before the increase it was $136.416.
Step-by-step explanation:
16% of $162.40 is 25.984.
We need to do $162.40 - 25.984 which equals to $136.416.
Hope that helps. x
What's 21 x 202
I need to know for my report
Answer:
4242
Step-by-step explanation:
Answer:
4242
Step-by-step explanation:
I really need help with this, and also if it's Substitution or linear combination and it will be really helpful if you do step by step please.
Answer:
-2x+y=12
Step-by-step explanation:
linear equation