21=-7n
It's a one-step equation. Please help!!
Answer:
-3=n
Step-by-step explanation:
21=-7n
divide both sides by -7
-3=n
Answer:
n=3
Step-by-step explanation:
21 ÷7=3
n=3
Construct a quadrilateral ABCD , Where PL- 6cm , AY- 6.5cm , LL- 70°, LA- 95°
Answer:
Here's the photo!
Step-by-step explanation:
what is 12.5% of 40?
Answer:
5
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
Solution for What is 12.5 percent of 40:
12.5 percent *40 =
(12.5:100)*40 =
(12.5*40):100 =
500:100 = 5
Now we have: 12.5 percent of 40 = 5
Question: What is 12.5 percent of 40?
Percentage solution with steps:
Step 1: Our output value is 40.
Step 2: We represent the unknown value with $x$.
Step 3: From step 1 above,$40=100\%$.
Step 4: Similarly, $x=12.5\%$.
Step 5: This results in a pair of simple equations:
$40=100\%(1)$.
$x=12.5\%(2)$.
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
$\frac{40}{x}=\frac{100\%}{12.5\%}$
Step 7: Again, the reciprocal of both sides gives
$\frac{x}{40}=\frac{12.5}{100}$
$\Rightarrow x=5$
Therefore, $12.5\%$ of $40$ is $5$
check whether x² +4x +4 is prefect spuare expression or not . if so factorise the expression
Answer:
It is a perfect square expression.
It factors to (x+2)^2
===========================================================
Explanation:
The general format for a perfect square is
(a+b)^2 = a^2 + 2ab + b^2
Which can be seen through the use of the FOIL rule.
Compare x^2+4x+4 with a^2+2ab+b^2, and we have these three equivalences:
x^2 = a^2 .... first terms4x = 2ab .... middle terms4 = b^2 .... last termsSince x^2 = a^2, we can apply the square root to both sides to get a = x. Similarly, 4 = b^2 leads to b = 2. We could get b = -2, but that would mean 2ab = 2x*(-2) = -4x instead of 4x. So we'll stick with b = 2 instead.
Because a = x and b = 2, we then can say:
(a+b)^2 = a^2 + 2ab + b^2
(x+2)^2 = x^2 + 2*x*2 + 2^2
(x+2)^2 = x^2 + 4x + 4
Showing that x^2+4x+4 factors to (x+2)^2.
The school provides parking passes that include a letter and a number between 1 and 20. What is the probability that Mr. Welton will be given the parking pass with "W-17" on it?
26 letters in the alphabet.
1-20 = 20 numbers.
The probability of getting w = 1/26
The probability of getting 17 = 1/20
The probability of both: 1/26 x 1/20 = 1/520
what is greater 0.059 or .59
Answer:
.59
because 0.059 is 10 times greater i dont know lol its just common sense that its .59
Anyone who is a girl or boy answer me will give brainliest.
Answer:
im a girl
Step-by-step explanation:
please help me find the area of the composite figure :)
Find the exact value of x.
Answer:
The exact value of x will be [tex]\sqrt{52}[/tex] or 7.2111
Step-by-step explanation:
Hope this Helped
What is the range of this function?
-8
8
10
5
12
7
Tyron left his house and drove 30 miles north, then 17 miles east. Birds
eye view, how far is he from his house? Round to the nearest tenth.
pls hurry it’s for a quiz
Answer:
Step-by-step explanation:
Basically it’s goin to be 50 because it says round to the ten and it’s basically 47
[tex](5 - x)(x - 3)[/tex]
Answer:
15x
Step-by-step explanation:
because i multiply i side by side and copy the variable
Answer:
- x² + 8x - 15
Step-by-step explanation:
Given
(5 - x)(x - 3)
Each term in the second factor is multiplied by each term in the first factor, that is
5(x - 3) - x(x - 3) ← distribute parenthesis
= 5x - 15 - x² + 3x ← collect like terms
= - x² + 8x - 15 ← in standard form
Which situation is represented by the equation x+10=26?
Answer:
16
Step-by-step explanation:
the situation is addition the answer is 16 i think
Which expression represents the factored form of 6x+2-13x-5?
Answer:
(2x-5)(3x+1)
Step-by-step explanation:
edge 2021
(hi can someone help me with this?) If f(x) = 4x - 3, what is f(x)^-1?
a.) x/4 + 3
b.) x + 3/ 4
c.) 3 - 4x
d.) 4/x+3
Answer:
F(x) ^-1= x+3/4
Step-by-step explanation:
Exchange f(x) for y
Y=4x-3
+3
Y+3=4x
/4
Y+3/4=x
Swap y and x
F(x)^-1= x+3/4
Answer:
Here is your answer
Hope it helps
Find the slope of the line that passes through the points (-3, 2) (5, 4).
O 1/8
O 2/8
O 3/8
1
4
HURRY PLS THIS IS TEST!!
Write the equation of each line in slope-intercept form and identify the slope. 4x=2+y
Answer:
y = 4x - 2
Step-by-step explanation:
Given: 4x=2+y
First, subtract 2 on both sides to isolate out y. (Slope-intercept form is y=mx+b)
Once subtracted, you get: 4x-2=y
Rearrange it, and you get: y=4x-2
log2 (X^2+3x+2)=1 state the universe and solve each of the following for x.
By "state the universe" I suppose you mean "domain". log₂(x ² + 3x + 2) is defined for
x ² + 3x + 2 = (x + 1) (x + 2) > 0 → x < -2 or x > -1
(To solve the inequality, consider values of x between the ones that make the expression exactly equal to 0, in this case x = -2 and x = -1. We have, for instance, for x = -3, that (-3)² + 3(-3) + 2 = 2 > 0, so x ² + 3x + 2 > 0 for all x < -2.)
Now solve the equation: Write both sides as powers of 2 to eliminate the logarithm on the left:
[tex]\log_2(x^2+3x+2)=1\implies 2^{\log_2(x^2+3x+2)}=2^1\implies x^2+3x+2=2[/tex]
Solve the remaining quadratic:
x ² + 3x + 2 = 2
x ² + 3x = 0
x (x + 3) = 0
x = 0 or x = -3
Both of these solutions are within the presribed domain (-3 < -2 and 0 > -1), so we're done.
Students were asked to choose their favorite sport, and 7/9 chose either
basketball or soccer. If 5/9 of the students chose basketball, what fraction
chose soccer?
in order to get an A Mark needs to get at least 90% of the 650 points possible in the class. How many points must he earn of the 150-point final if he averaged 92 points on each of the five 100-point test
Answer:
at least 125 points on the final
Step-by-step explanation:
90% of 650 = 585
He needs at least 585 points to get at least 90%
Since he averaged 92 on the first 5 tests, he already has 5(92) = 460 pts
That means he needs to get at least 585 - 460 = 125 pts on the final exam
Belinda has a savings account. Every month she deposits $30 in it. The graph shows the relationship between the months and the balance of Belinda's savings account.
Write an inequality to show when Belinda will have more than $120 in her savings account.
Answer:
Lets say that m is months
Every month she deposits 30 so that is 30m
lets say t is time
t = 30m > 120
After 4 months, she will have exactly $120. In 5, she will have more.
Step-by-step explanation:
If Jessica split 75 pencils between 8 people in her class and kept the leftovers, how many pencils did each classmate get?
Answer: Each classmate got 9 pencils
Step-by-step explanation: if you divide 8 from 75, you get 9 pencils for each classmate and 3 for Jessica to keep.
45% of 81.2 is a number between?
Answer:
36.54
Step-by-step explanation:
that's what it is so just do like 36-37
Answer:
45% of 81.2 is 36.54
Step-by-step explanation:
Pls help me with my homework I need help
Answer:
need points luvk
Step-by-step explanation:
What is the measure of arc RS?
A. 180 degrees
B. 238 degrees
C. 122 degrees
D. 58 degrees
An angle measures 4.3 radians. To the nearest degree, what is the measure of the angle? degrees
Answer:
Step-by-step explanation:
[tex]\frac{deg}{rad}=\frac{360}{2\pi}=\frac{180}{\pi}\\ \\ deg=\frac{180rad}{\pi}\\ \\ deg=\frac{180(4.3)}{\pi}\\ \\ deg=\frac{774}{\pi}^o\\ \\ deg\approx 246^o[/tex]
Answer:
246
Step-by-step explanation:
2. What is the product of -2x^3+c-5 and x^3-3x-4 Show your work
Answer:
Multiply across the parenthesis and combine like terms
Explanation:
(
x
−
2
)
×
(
3
x
−
4
)
=
x
×
(
3
x
−
4
)
−
2
(
3
x
−
4
)
x
×
(
3
x
−
4
)
−
2
(
3
x
−
4
)
=
3
x
2
−
4
x
−
6
x
+
8
3
x
2
−
4
x
−
6
x
+
8
=
3
x
2
−
10
x
+
8
Step-by-step explanation:
hope this helps
Under her cell phone plan, Aubree pays a flat cost of $50.50 per month and
$4 per gigabyte. She wants to keep her bill at $56.10 per month. Write and
solve an equation which can be used to determine g, the number of gigabytes
of data Aubree can use while staying within her budget.
Answer:
she can use 14.025 gigabytes
.The measures of the angles of a triangle are in the extended ratio 6: 1: 5. What is the measure of the largest angle?
9514 1404 393
Answer:
90°
Step-by-step explanation:
The largest angle is 6 of the 6+1+5 = 12 ratio units, so is 6/12 = 1/2 of the total number of degrees in a triangle.
The largest angle is 1/2(180°) = 90°.
Seven less than a number is 18
Let the number be n.
Now, "seven less than a number" means we subtract 7:-
n-7
This expression is equal to 18:-
[tex]\sf{n-7=18}[/tex]
[tex]\mathcal{SOLUTION:-}[/tex]
Add 7 to both sides:-[tex]\bigstar{\boxed{\pmb{n=25}}}[/tex]
note:-Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I will comment and/or edit my answer :)