Answer:
75
Step-by-step explanation:
If 30 students represent 40% of the class, we can divide 30 by .40 to get 75.
Is it possible for two numbers to have a difference of 8, and a sum of -6? If so, what are the two numbers?
Answer: The two numbers are 1 and -7
1 minus -7 = 1 - (-7) = 1 + 7 = 8 .... difference
1 plus -7 = 1 + (-7) = -6 .... sum
===================================================
Explanation:
Let x and y be the two numbers. Let's say that x > y. Meaning that x is the bigger value.
They have a difference of 8 tells us that
x-y = 8
since "difference" is the result of subtraction. The term "sum" means the result of addition. Having a sum of -6 tells us
x+y = -6
We have this system of equations
[tex]\begin{cases}x-y = 8\\x+y = -6\end{cases}[/tex]
We can add the equations straight down. So we add the x terms to get x+x = 2x. The y terms add to -y+y = 0y = 0, so the y terms go away. The stuff on the right hand side adds to 8+(-6) = 2
After adding the equations straight down, we boil things down to the equation 2x = 2 which solves to x = 1, after dividing both sides by 2.
Then you'll use x = 1 to find y
x-y = 8
1-y = 8
-y = 8-1
-y = 7
y = -7
or
x+y = -6
1+y = -6
y = -6-1
y = -7
Regardless of what equation you pick, you should end up with the same y value. This helps confirm we have the correct x value.
Another way to check is to plug (x,y) = (1,-7) into both equations of the system. You should end up with true statements after simplifying fully.
So the two numbers are x = 1 and y = -7
Find the slope of a line that passes through (2,4) and (-4,7) ?
a
1/2
b
- 1/2
c
-2
d
2
Answer:
Step-by-step explanation:
y^2-y^1/x^2-x^1 Formula
7-3/-4-4=4/-8= -1/2
Jamie need to earn more than $4,000 to pa his monthly bills. he earns a monthly salary of $2,500 plus an extra $75 for every electronic device he sells. Write an inequality to determine the minimum number of electronic devices Jamie needs to sell each month in order to have enough money to pay his monthly bills. Let d represent the number of electronic devices Jamie needs to sell each month. Help plz.
Answer:
hi
Step-by-step explanation:
hi
Lin's family has completed 80% of a trip. They have traveled 32 miles. How long is the whole trip?
Answer: 50 miles
Find t:
0.70t = 35. Dividing both sides by 0.70, we get:
35
t = ----------- = 50
0.70
The total trip length is 50 miles.
please help with 5 please and thank you
Answer:
=4p^2−12p+13
Step-by-step explanation:
Let's simplify step-by-step.
4p^2−12p+13
There are no like terms.
what is the equation of a line when m = -7 and b = -8?
Answer:
Step-by-step explanation:
y = mx+b
y = -7x - 8
Answer:
y=-7x-8
Step-by-step explanation:
y=mx+b
m=slope
b=y intercept
V = 5x + 2y
x= 3
y=-4
a) Work out the value of V
b) Expand 3p(p + 5)
c) Solve 4(k - 6) = 20
Answer:
a.7
b.
[tex]3 {p }^{2} + 15p[/tex]
c.k=11
Step-by-step explanation:
a.V=5x + 2y ,x=3,y= -4
V=5(3)+2(-4)
=15+(-8)
=15-8
=7
b.3p(p + 5)
=
[tex]3 {p}^{2} + 15p [/tex]
c.4(k-6)=20
4k-24=20
4k-24+24=20+24
4k=44
4k/4=44/4
k=11
hope it's helpful ❤❤❤❤
THANK YOU.
#
Complete the input-output table for linear equation y=8x+7
7.602 neastest whole number
Answer:
8
Step-by-step explanation:
since it's 7.6, the rule of rounding is if it's five or more go up, and 4 or less stays the same. since it's 6, you go up to the nearest whole number, which is 8
36% of 110 is what number?
36% of 110 is 39.6
I hope I helped!!!
Find the distance between 2 and -2
A) -6
B) -4
C) 0
D) 4
Answer:
d
Step-by-step explanation:
complete the algebraic table for y = 2x + 3
given: x ---> -2, -1, 0, 1, 2, 3
y ----> ?, 1, ?, ?,7,?
Answer:
y ----→ -1 , 1 , 3 , 5 , 7 , 9
Step-by-step explanation:
LINEAR EQUATION GIVEN IN THE QUESTION :- y = 2x + 3
In the question , some values of variable 'x' are given. Lets put each value of 'x' in the equation.
When x = -2 ; [tex]y = 2(-2) + 3 = -4 + 3 = -1[/tex]When x = -1 ; [tex]y = 2(-1) + 3 = -2 + 3 = 1[/tex]When x = 0 ; [tex]y = 2(0) + 3 = 0 + 3 = 3[/tex]When x = 1 ; [tex]y = 2(1) + 3 = 2 + 3 = 5[/tex]When x = 2 ; [tex]y = 2(2) + 3 = 4 + 3 = 7[/tex]When x = 3 ; [tex]y = 2(3) + 3 = 6 + 3 = 9[/tex]Thus , we got all the required values of y.
need help with this question asap !!!
Answer:
I think it is B
Step-by-step explanation:
=========================================================
Work Shown:
The smaller angles UVN and NVW add up to the largest angle UVW.
This is due to the angle addition postulate.
(angle UVN) + (angle NVW) = angle UVW
(6x+13) + (46) = 11+10x
6x + 59 = 11 + 10x
6x - 10x = 11 - 59
-4x = -48
x = -48/(-4)
x = 12
----------------
Extra info:
If you're curious about the angles, then we use that x value to find them
angle UVN = 6x+13 = 6*12+13 = 72+13 = 85 degreesangle NVW = 46 degreesangle UVW = 11+10x = 11+10*12 = 11 + 120 = 131 degreesNote how 85+46 = 131 to show that (angle UVN) + (angle NVW) = angle UVW is a true equation. This confirms our answer for x.
While testing 10 light bulbs, Harvey finds that 6 of them do not light. Which best describes the fraction of light bulbs that are working? A. number of light bulbs that are not working/total number of light bulbs B. number of light bulbs that are working/number of light bulbs not working C. number of light bulbs that are not working/number of light bulbs working D. number of light bulbs that are working/total number of light bulbs
Answer:
4/10
Step-by-step explanation:
There is 10 of them, and 6 are not working. So, it is 4/10
please help (URGENT) (im slow)
Answer:
x=8
Step-by-step explanation:
find the measure of
Answer:
The measure of what???
Identify whether the expressions are equivalent or not equivalent: 7y – 15 + 2y and 9y - 15
Answer:
Yes, the two expressions are equivalent
The given expression 7y - 15 + 2y and 9y - 15 are equivalent.
What is equivalent expression?
Two algebraic expressions are said to be equivalent if their values obtained by substituting the values of the variables are same, even they look different.
According to the given question.
We have two expressions
[tex]7y - 15 + 2y ...(i)[/tex]
And, [tex]9y - 15 ...(ii)[/tex]
The expression (i) can be written as
[tex]7y - 15 + 2y[/tex]
[tex]=(7y + 2y)-15[/tex] (adding the like terms)
[tex]= 9y -15[/tex]
Hence, the given expression 7y - 15 + 2y and 9y - 15 are equivalent.
Find out more information about equivalent expression here:
https://brainly.com/question/27733205
What is the quotient?
- -2
Answer: You need 2 terms so there isn't one
The term "quotient" is most commonly used to refer to the ratio of two quantities and , where. . Less commonly, the term quotient is also used to mean the integer part of such a ratio.
Step-by-step explanation:
Mandy paid $9.84 for 3 pounds of ground meat. What is the price per pound?
Answer:
$3.28 wait for more responses if needed
Step-by-step explanation:
9.84 divided by 3 would be 3.28
Answer:
3.28 per pound
Step-by-step explanation:
All you have to do is divide 9.84 by 3 to see how much Mandy paid per pound.
Hope this helps!!!
Explain the slope and the y-intercept
What is the image of (8,-6) after a reflection over the line y = x?
Answer:
Step-by-step explanation:
Interchange x and y: (-6, 8) is the image of (8, -6) after a reflection over y = x.
The image of (8,-6) after a reflection over the line y=x is (-6, 8).
The given coordinate point is (8, -6).
What is a reflection over the line y=x?Reflect over the y = x, when you reflect a point across the line y = x, the x-coordinate and y-coordinate change places. If you reflect over the line y = -x, the x-coordinate and y-coordinate change places and are negated (the signs are changed).
The image of (8,-6) after a reflection over the line y=x is
Reflecting in the line y = x interchanges the x and y coordinates. So, the image of (8, -6) is (-6, 8).
Therefore, the image of (8,-6) after a reflection over the line y=x is (-6, 8).
Learn more about the reflection over the line y=x visit:
https://brainly.com/question/18376051.
#SPJ2
what is the answer i need help
Answer:
27
Step-by-step explanation:
add 5+5+7+6+4
Plez help finding percent change
Answer:
can't see proprly
Step-by-step explanation:
PLEASEEEEEE HELPP ME EEEE :)
An uses they equation y= 8.25x to calculate the total cost y in dollars for x posters. How much did she spend on 6 posters?
Geometry please help thanks
Answer:
the answer is SSS (side-side-side)
Step-by-step explanation:
since the picture shows red tick marks on each side it's showing you they are all congruent by the sides which is the method SSS (side-side-side)
She counted the money and found out she has $14.90 in the jar. How many dimes and quarters does she have?
Answer:
There're too much possibilities of the answer.
3w - 11 = 25
can someone answer this plz
Answer:
w = 12
Step-by-step explanation:
3w = 11 + 25
3w = 36
w = 12
Hope that helps!
Solve the equation for all values of x in simplest form:
(x - 2)2 = 49
i don’t understand.
online school is hard
Answer:
4. [tex]6\sqrt{3}[/tex]
6. [tex]\frac{2\sqrt{6} }{3}[/tex]
8. 23.78