Answer:
[tex] x = - \frac{1}{4} [/tex]
Step-by-step explanation:
[tex]{9}^{2x + 1} = {81}^{3x + 1} \\ \\{3}^{2(2x + 1)} = {3}^{4(3x + 1)} \\ \\ {3}^{4x + 2} = {3}^{12x + 4} \\ bases \: are \: equal \: so \: exponents \: \\ will \: also \: be \: equal\\ \\ 4x + 2 = 12x + 4 \\ \\ 2 - 4 = 12x - 4x \\ \\ - 2 = 8x \\ \\ x = - \frac{2}{8}\\ \\ x = - \frac{1}{4} [/tex]
A taco charges $2.50 plus a fee of $0.05 for each mile traveled. If the ride costs $7.50, how many miles was the ride?
Answer:
100 miles
Step-by-step explanation:
7.50-2.50=5.00
100x0.05=5.00
Answer:
2.9 miles or 3 miles
Step-by-step explanation:
1. Add 2.50 & 0.05 (dont forget to line up the decimals!)
2. Divide 7.50 & 2.55
3. You then get your final answer. ( round to the nearest tenths-)
A- im sorry if this is wrong T-T
Find the value of x and the measure of the angle labeled 6xº.
Answer:
30=6x(vertically opposite angle)
x=30/6=5
b.x=5,angle measure is 30
Would anyone like a brainliest?
Or whoever guesses my favorite season first gets it.
Answer:
Winter,summer and fall
f(x)=-x^2-14 find f(9)
Answer:
Step-by-step explanation:
f(x) = -x² - 14
f(9) = -9² -14 = -81-14 = -95
The temperature at 6 a.m was -12 degrees. At 11 a.m the temperature was 0 degrees. Which of the following shows the temperature change from 6 a.m to 11 a.m
Answer:
12 deg
Step-by-step explanation:
The change in temperature is the new temperature minus the old temperature.
0 deg - (-12 deg) = 0 deg + 12 deg = 12 deg
The change in 12 deg.
(6,2)-(4,5)-(9,4) dilated by a scale factor of 3
Answer:
1 . 6 , 2 is 18 ,6
2.4,5 is 12 ,15
3. 9,4 is 27,12
but is ans is wrong
GIVING BRAINLIEST!!!!!!
What is the total length of all meteors that are 1 6/8 inches?
A) three and four eighths inches
B) three and five eighths inches
C) four and seven eighths inches
D) three and seven eighths inches
Answer:B
Step-by-step explanation
Answer:
B
Step-by-step explanation:
if 15% of a value is 120 what is 20% of the value
Answer:
160
Step-by-step explanation:
120divide15=8x20=160
Answer:
160
Step-by-step explanation:
15%=0.15
120/0.15=800
20%=1/5
800*1/5=160
Identify the solution for the system of equations graphed here.
A. (1, 1)
B. (-1, 1)
C. (1,-1)
D. (-1,-1)
Answer:
c
Step-by-step explanation:
Mrs. Carter baked 100 muffins for a bake sale. The muffins were sold in packages of 2. There were 12 muffins left. Write an equation to find how
many customers bought muffins at the bake sale. Model the equation using a flowchart
Answer:
2n + 12 = 100 (Equation)2n = 88 (Solving)n = 44 people bought muffins at the bake sale. (Solving)Step-by-step explanation:
100 muffins, and 2 in each package. Therefore, there are 50 packages. However, in the end, there are 12 left, so there must have been 6 packages left.Answer:
2n+12=100 ...........
Find an equation of the line parallel to y = 3x + 2 and that passes through the point (-1, -3)
What's the area of this figure? help!
The area is 250.5 in^2
Please help!!!!!!!!!!
Find the gradient of the line segment between the points (8,6) and (10,12)
Answer:
3.
Step-by-step explanation:
The gradient = (12-6/(10-8)
= 6/2
= 3.
Identify whether each cube root or square root lies between 2 and 3, 4 and 5, or 9 and 10.
3101
V90
3390
3120
V20
800
Answer:
3101
Step-by-step explanation:
A farmer has a field in the shape of a semicircle of diameter 50 m. First,
calculate the length of the semicircle to 1 decimal place.
50 m
Answer:
157.1 m
Step-by-step explanation:
Here, we want to calculate the length of the semi-circle
This simply refers to the circumference of the semi-circle
Mathematically, the circumference is half that of a full circle
The circumference of a full circle is;
C = pi * d
For half circle or semi-circle;
It is ;
C = (pi * d)/2
D = 50 m
The circumference is thus;
C = 50 * 3.142
C = 157.1 m
9. If the area of square 1 is 250 units?, and the area of square 3 is
120 units, what is the area of square 2? Explain your reasoning.
Answer:
185 units.
Step-by-step explanation:
So first, I subtracted: 250 - 120 = 130
I divided 130 by 2. I got 65.
I subtracted 65 from 250 and I got 185.
Proof it is correct:
185 - 120 = 65
AND
250 - 185 = 65
--
Which of the following is the solution to the system of equations shown below?
x + 5y = -3
3x – 2y = 8
Answer:
x = -2, x = 1
Step-by-step explanation:
mark as brainliest it is right
what is the linear equation of a line with a rate of change of -1/2 that passes through the point (0, 4)
Answer:
y = 9/2 (fraction)
Step-by-step explanation:
y = mx+c
m = slope
c =y -intercept
Therefore, the required equation is:
y = 2x + c
Putting the point (0,4) in it as it lies on a line, we get:
4 = -1/2 + c
Therefore:
c = 9/2
So, y = 9/2
Brainlist pls!
the number of square units the figure encloses
PLEASE HELP THIS IS DUE ASAP AND I WILL MARK U BRAINLIEST
Answer: 4/1
Step-by-step explanation:
Rise over run. Starting at 1 on the y axis this line moves up 4 and over (right) 1 before it hits 1 on the x axis.
help pls i really need to get my grade up
Answer: 0 < x < 5.6
Step-by-step explanation:
The sides of triangle:
Any two sides added together have to be larger than the third side
So:
2.8 - 2.8 < x < 2.8 + 2.8
0 < x < 5.6
Determine the measure of angle A
Step-by-step explanation:
3x+18=4x+2
x= 16
measure of <A = 66°
help me out with this question (geometry)
Answer: It should be 24 because Ray SP is an angle bisector
Step-by-step explanation:
Help ASAP!!!!!!!!!!!
Answer:
- 1/2
Step-by-step explanation:
In order to find a slope intercept we need to use,
Equation : y= mx + b to find the slope (m)
i’ll mark the brainliest for the correct answer, please just help me
Answer:
B, A.
Step-by-step explanation:
What is the median?
A(18
B(27
C(33.2
D(34.5
Answer: 34.5
Step-by-step explanation:
First, write out all of the numbers from least to greatest.
which is (18,20,26,34,34,35,38,40,42,45)
Second, choose the number in the middle of the set of numbers you wrote out from least to greatest. (There are TWO numbers in this case, which are 34 and 35)
Lastly, since there are two numbers you add them both together and then divide by 2. (34+35=69 , 69 divided by 2 = 34.5)
help me pls this is 8th grade math fastest answer gets brainliest show work pls
Answer:
10/10 = 1
x2/x2 = 1
x3/x3 = 1
10 raise to power 4/ 10 raise to power 2 = 10 raise to power 2
5 raise to power 5/ 5 raise to power4 = 5
x raise to power 7/ x raise to power 5 = x raise to power2
Step-by-step explanation:
I hope this helps a little bit.
The sales tax in your city is 4.4% and an item costs $3 before tax. How much tax would you pay on that item. (round to nearest hundredth or cent.)
Answer: 0.13
3 times 0.044 =0.13
Step-by-step explanation:
pls help need it ASAP
will give brainlist
:)
Step-by-step explanation:
Given
5x + 2y = 16 .....i)
x + 2y = 4 .....ii)
Subtracting equation I) and ii) we get
5x + 2y = 16
x + 2y = 4
- - -
4x = 12
x = 3
Putting x = 3 in equation ii)
3 + 2y = 4
2y = 4 - 3
y = 1/2
x =3 and y = 1/2
Hope it helps :)
Answer:
1) x=2 y=3 2) x=2 y=1
Step-by-step explanation: