Answers
Answer:
X = 50
Step-by-step explanation:
Both equations TOGETHER equal 180 degrees so you write the equation:
2x + 30 + x = 180
(combine X's. Subtract 30 from both sides):
3x = 150
(divide both sides by 3)
X = 50
Related Questions
A chemist is using 337 milliliters of a solution of acid and water. If 13.2% of the solution is acid, how
many milliliters of acid are there? Round your answer to the nearest tenth.
Answers
Answer:
44.5 mL
Step-by-step explanation:
337 × 13.2%
= 337 × 0.132
= 44.484 mL
= 44.5 mL (1dp)
The angle which is four times its complement is a. 60 b. 30 C. 45 d. 72
Answers
Answer:
The answer is D.72°
Step-by-step explanation:
hope this helps.
Look at the figures. How can you prove the triangles are congruent?
is it
A) ABC= DEF by the SAS postulate
B) It is not possible to determine if the triangles are congruent
C) ABC = DEF by the SSS postulate
Answers
Answer:
SAS
Step-by-step explanation:
AB ≅ DE Given
AC ≅ DE Given
∠ A and ∠B are right angles Given
∠A ≅ ∠B All right angles are ≅
A map of Pennsylvania has a scale of ¾ inch to 25 miles. If Pittsburgh and Philadelphia are 9 inches apart on the map, how many miles apart are the two cities?
Answers
Answer: 300
Step-by-step explanation:
0.75 inches : 25 miles
we can times 0.75 by 12 to get 9, we have to do the same thing on the other side.
9inches : 300 miles
CAN ANYBODY HELP ME What is the 100th term in the sequence beginning with -45, -43, -41, -39, ...?
Group of answer choices
153
150
155
200
55
Answers
Answer:
153
Step-by-step explanation:
Since the given sequence is arithmetic because it has common difference.
-43-(-45) ,= -43+45 = 2
-41+43 = 2
-39+41 = 2
Therefore, the common difference is 2.
General Term
[tex] \displaystyle \large{a_n = a_1 + (n - 1)d}[/tex]
Since we want to find the 100th term, substitute n = 100.
We know common difference which is 2 and defined as 'd'; substitute d = 2
a1 means first term so:-
[tex] \displaystyle \large{a_{100}= - 45 + (100 - 1)2} \\ \displaystyle \large{a_{100}= - 45 + (99)2} \\ \displaystyle \large{a_{100}= - 45 + 198} \\ \displaystyle \large{a_{100}= 153}[/tex]
You are given that a 7.6.54 to 3 significant figures) and b = 123 (to 3 significant figures):
Calculate upper and lower bounds for a+b, give your answers to 3 significant figures:
Answers
[tex]\\ \sf\longmapsto a+b[/tex]
[tex]\\ \sf\longmapsto 123+76.5[/tex]
[tex]\\ \sf\longmapsto 199.5[/tex]
[tex]\\ \sf\longmapsto 199[/tex]
please help due today NO LINKS WILL REPORT
Answers
Answer:
Step-by-step explanation:
i think that the answer is a, because the def of natural numbers match's and there all integers.
the diagram shows a circle inside a square 16cm work out the area of the circle
Answers
Answer:
12.57 or 4π
Step-by-step explanation:
Since the area of 16, the 2 sides must be 4 and 4
From that we can infer that the diameter is 4
Radius is 2
radius squared*pi
4*3.142
12.57
Lourdes plans to jog at least 1.5 miles. Write and solve an inequality to find x, the number of hours that Lourdes will have to jog..
Answers
Answer:
An inequality compares two or more variables by using the <, >, ≤, or ≥ signs.
The number of hours Lourdes will have to jog is 0.4 hours
From the given parameters:
Lourdes plans to jog for at least a distance of 1.5 miles
If Lourdes can jog averagely at the speed of 3.75 mph
Then,
the inequality that can represent the information can be written as:
= 1.5 miles ≤ 3.75 (x) miles/hour
Solving the inequality;
= 1.5 ≤ 3.75 (x)
Making (x) the subject of the formula, we have:
x = 0.4 hours
Therefore, we can conclude that the number of hours lourdes will have to jog is 0.4 hours
Step-by-step explanation:
value of 3 to the power of -2
Answers
Answer:
it would be .1111111111
Hope this helps
Answer:
.1 repeating
Step-by-step explanation:
.1 repeating= .11111111111
Hope this helps.
HELP ME PLS
if y varies inversely with x, and y = 15/2 when x = 4, find x when y = 15/4
Answers
y=k/x
Where “k” is a constant
15/2=k/4
2k=60
k=60/2
k=30
:. 15/4=30/x
15x=120
x=120/15
:.x=8.
Let f(x)=8x−6. What is the value of f(12)?
Answers
Answer:
f(12) = 90
Step-by-step explanation:
This is more of a notation problem than anything else.
The x on the left means that the variable is x. That sounds weird I know, but it starts out this way.
f(variable) = 8*variable - 6
Where you see the word variable, you put the letter x and that gives you the question.
f(x) = 8*x - 6
That is math shorthand for whatever you see on the left, like an x or in this case 12, you put the value 12 in for x on the right. It will look like this.
f(12) = 8*12 - 6 Now it just becomes a calculator problem.
f(12) = 96 - 6
f(12) = 90
Find the measures of two supplementary angleš if the difference between the
measures of the two angies is 35º
Answers
Answer:
<1 = 107.5 degrees
<2 = 72.5 degrees
Step-by-step explanation:
<1 = x
<2 = x -35
x + x - 35 = 180
2x = 180+35
x = 215/2
x = 107.5
<1 = 107.5
<2 = 72.5
HELP THIS IS DUE SOON 30 POINTS
Answers
Answer:
x = 4
Step-by-step explanation:
f(x) = 4x-5
11 = 4x-5
4x-5 = 11
4x = 11+5
= 16
x = 16÷4
= 4
Six times the quantity, x-2, is 24. Find the number
Answers
Answer:
x = 6
Step-by-step explanation:
it states 6 times the quantity x - 2, so the expression would be 6 ( x - 2 ) = 24. first multiply because you cannot add or subtract unlike terms. so 6 multiplied by x and -2, the expression would be (6x - 12) = 24. add 12 to 12 so you cancel the coefficient. but when adding to the constant add to the sum. now it is 6x = 36. since 6x is multiplication, divide 6x by 6 to isolate the variable, but divide the answer, 36 divided by 6 is 6. therefore x = 6. hope this helps
find two numbers with a sum of
11 and a difference of 5.
Answers
Answer:
8 and 3
Step-by-step explanation:
Answer:
The numbers are 8 and 3
Step-by-step explanation:
Hope This Helps!
share 40 pounds in the ratio 1:4 between tim and sam
Answers
Answer:
Add the ratio together: 1 + 4 = 5
Divide total by 5: 40/5 = 8
Multiply 8 by each portion of the ratio:
8 x 1 = 8
8 x 4 = 32
Time gets 8
Sam gets 32
bubba's gym charges a $100 membership fee and $10 per visit.
write an expression that represents the cost of "x" visits: C=_______
Answers
Answer:
C=100+10x
Step-by-step explanation:
its 10$ per visit and x represents the number of visits. and you get a 1 time membership fee of 100 so its 100+10x=C c stand for cost.
PLEASE HELP DUE TODAY NO LINKS WILL REPORT
Answers
Answer:
The first option
Step-by-step explanation:
Because you cannot have a negative squared root
Answer:
a.
Step-by-step explanation:
I had this question before lol.
(1.5x10^-5)+(3.5x10^-2) what is this written in scientific notation??
Answers
Answer:
0.035015x
Step-by-step explanation:
please help!! using the pythagorean theorem !!
Answers
Answer:
≈8.66
Step-by-step explanation:
a²+b²=c²
5²+b²=10²
25+b²=100
25+b²-25=100-25
b²=75
b=√75
≈8.66
pls mark me as brainliest!
Answer:
8.66
Step-by-step explanation:
You're solving for b.
first, use the formula
c = a^2 +b^2
b = c^2 -a^2 = 10^2 - 5^2 = 8.66025
Don't forget that you have to square root it.
The product of x and 7 is at least 21
Answers
7 x 3 = 21
–8(6+3)
-83
Please help me
Answers
Answer:
-155
Step-by-step explanation:
-8\cdot \:9-83
-72-83
=-155
Need lotta help.What is 6 times 80?
Answers
Answer:
480
Step-by-step explanation:
tập nghiệm của phương trình 3tan+√3=0
Answers
X= tan^-1(-3/sqrt(3))
X= -60 degree
Answer:
if 0° ≤ x ≤ 360°
x = 150° or x = 330° (5/6 π , 11/6 π)
if x can be beyond 2π (360°) , above or below
x = 5/6 π + 2nπ or x = 11/6 π + 2nπ
Step-by-step explanation:
3 tanx = -√3
tan x = - 1/√3
if 0° ≤ x ≤ 360°
x = 150° or x = 330° (5/6 π , 11/6 π)
if x can be beyond 2π (360°) , above or below
x = 5/6 π + 2nπ or x = 11/6 π + 2nπ
In a particular part of the Volta lake, there is a population of 100000 tilapia. The number of tilapia is decreasing at a rate of 10% per year due to pollution from a human settlement on the shores of the Volta lake in this area.
2. Copy and complete the table below to show the number of tilapia P after 1, 2 and 3 years
Number of years (t) 0 1 2 3
Number of tilapia (N)
Criterion B 1-2
b) Write an exponential model for the number of tilapia N after t years
Criterion B 3-4
c) When the population of tilapia falls below 25000 it is at a ‘critical level’. Write an inequality and calculate how long it will take for this lake to be at a critical level.
Answers
Answer:
?????
Step-by-step explanation:
A family has two cars. The first car has a fuel efficiency of 20 miles per gallon of gas and the second has a fuel efficiency of 40 miles per gallon of gas. During one particular week, the two cars went a combined total of 1700 miles, for a total gas consumption of 55 gallons. How many gallons were consumed by each of the two cars that week
Answers
S = second car
F+S =55
F= 55-S
20f+40s=1700
Using substitution method add the value of F to second equation
20(55-s)+40s=1700
1100-20s+40s=1700
1100+20s=1700
20s=600
s=30
So second car consumed 30 gallons of gas; first car consumed 25 gallons
9 - 5n < -4n + 9 or 9n + 4 < 7n - 4
Answers
Larry and Cathy study for a total of 24 hours each week. Larry studies 3 less than twice the hours than Cathy studies. How many hours does Cathy study per week?
Answers
ATQ
[tex]\\ \sf\longmapsto x+2x-3=24[/tex]
[tex]\\ \sf\longmapsto 3x-3=24[/tex]
[tex]\\ \sf\longmapsto 3x=24+3[/tex]
[tex]\\ \sf\longmapsto 3x=27[/tex]
[tex]\\ \sf\longmapsto x=9[/tex]
Answer:
ᎪꪀsωꫀᏒ9 hours Cathy study per week
Step-by-step explanation:
=> according to the question
➪ x+2x-3=23
➪ 3x-3=24
➪ 3x=24+3
➪ 3x=27
➪ x= 27/3
➪ x= 9
Elaine old bicycle had tires with 12 inch diameter. Her new bicycle has tires with 16 inch diameter. What is the difference in the same conference of the tires
Answers
Answer:
12.56 inches
Step-by-step explanation: