Answers
Answer:
[tex]a=10[/tex]
Step-by-step explanation:
Equation 1: [tex]2a+3b=-1[/tex]
Equation 2: [tex]4a+2b=26[/tex]
Subtract 3b from both sides in Equation 1:
[tex]2a=-1-3b[/tex]
Divide both sides by 2:
[tex]\frac{2a}{2}=-\frac{1-3b}{2}[/tex]
[tex]a=\frac{-1-3b}{2}[/tex]
Substitute this into Equation 2:
[tex]4* \frac{-1-3b}{2}+2b=26[/tex]
[tex]2\left(-3b-1\right)+2b=26[/tex]
[tex]-6b-2+2b=26[/tex]
[tex]-4b-2=26[/tex]
Add 2 to both sides:
[tex]-4b=28[/tex]
Divide both sides by -4:
[tex]\frac{-4b}{-4}=\frac{28}{-4}[/tex]
[tex]b=-7[/tex]
We know that [tex]a=\frac{-1-3b}{2}[/tex]. Plug in b = -7 value:
[tex]a=\frac{-1-3\left(-7\right)}{2}[/tex]
[tex]a=\frac{-1+3\cdot \:7}{2}[/tex]
[tex]a=\frac{20}{2}[/tex]
[tex]a=10[/tex]
Related Questions
Which types of life experiences have shaped your identity?
Answers
How do you round 25.62 to the nearest ten
Answers
Answer:
If its below 5 then it stays the same but if its over 5 then round up. 26
Step-by-step explanation:
In July, the average temperature in one US city was 29°C. By December, the average temperature had fallen by 29°C. Explain why the average temperature in December was 0°C.
Answers
Answer:
The temperature went up 29°C, which represents a positive 29. Then the temperature fell 29°C, which represents a negative 29. The average temperature rose and fell the same amount. The absolute values are the same, so the difference is 0.
Step-by-step explanation:
Edgenuity 2020
Answer:
Sample response: The temperature went up 29°C, which represents a positive 29. Then the temperature fell 29°C, which represents a negative 29. The average temperature rose and fell the same amount. The absolute values are the same, so the difference is 0.
Step-by-step explanation:
I did the assignment
What value of x makes the equation true?
1-3x = 1 - x
Answers
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{0}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{1 - 3x = 1 - x}[/tex]
Move x to left hand side and change it's sign
Similarly, move 1 to right hand side and change it's sign
[tex] \dashrightarrow{ \sf{ - 3x + x = 1 - 1}}[/tex]
Collect like terms
[tex] \dashrightarrow{ \sf{ - 2x = 0}}[/tex]
Divide both sides by -2
[tex] \dashrightarrow{ \sf{ \frac{ - 2x}{ - 2} = \frac{ 0}{ - 2}}} [/tex]
Calculate
[tex] \dashrightarrow{ \sf{ x = 0}}[/tex]
Hope I helped!
Best regards! :D
Does anyone know how to answer this problem?
Here's the picture.
Answers
Answer:
3 [tex]\frac{46}{81}[/tex]
Step-by-step explanation:
change 1 [tex]\frac{8}{9}[/tex] to an improper fraction
1 [tex]\frac{8}{9}[/tex] = [tex]\frac{17}{9}[/tex] , thus
[tex]\frac{17}{9}[/tex] × [tex]\frac{17}{9}[/tex] = [tex]\frac{289}{81}[/tex] = 3 [tex]\frac{46}{81}[/tex] or 3.57 ( to 2 dec. places )
Answer:
3.57
Step-by-step explanation:
1 8/9 =
(17/9)^2
17/9 x 17/9
17 x 17/ 9 x 9
17^2/ 9^2
289/81
3.567901
3.567901 Rounded is 3.57
Hope this helps!
Plz name brainliest if you can!
Find the mean, median, and mode
4, 8, 8, 4, 8, 4, 9, 3
Can some one help me I having trouble
Answers
Answer:
Step-by-step explanation:
Mean (Average):
6.42857
Median (Middle):
8
Mode (Most Common):
4,8
median is 6
mode is 4 and 8
15-10÷5+5?What is the answer
Answers
Answer:
18
Step-by-step explanation:
15-10÷5+5
First distribute the 10 ÷ 5.
15-2+5
Left to right, Subtract the 15-2.
13+5
Add.
18
Answer:
18
Step-by-step explanation:
What is the key idea when combining like terms?
Answers
choose all the answer that apply
which of the following are general characteristics of animal
specialized tissue
spinal cord
nervous system
autotropic
mobility
Answers
Answer:
mobility is a general characteristic of animals
Step-by-step explanation:
spinal cord is apart of an animal and nervous system is a system in animals autrotrophic is the feeding mode of plants
specialized tissue is a collection of cells specialized to perform the same function
PLEASE HELP! 15 POINTS What are the factors of the expression 4(q−18+p)?
Answers
Answer:
4 and (q − 18 + p)
Step-by-step explanation:
Given:
4(q−18+p)
The factors are
4 and (q − 18 + p)
A factor refers to something which is multiplied by something else. It could be a number, variable, term, or a longer expression.
For example. The factors of the expression 6x(y +2)
are 6, x and (y+2)
Can someone help me solve these or explain it to me?
Answers
The point-slope form of the equation of the line that passes through (-5, -1) and (10,-7) is
v+7 = -Ź (x– 10). What
is the standard form of the equation for this line?
ΟΟΟΟ
O 2x - 5y = -15
2x - 5y = -17
2x + 5y = -15
2x + 5y = -17
Please hurry I need this question answered ASAP pretty please
Answers
Answer: I just took the test and this is the answer I got
2x+5y=-15
What value is equivalent to 0.5
Answers
Answer:
Percent equals Decimal equals Fraction equals
0.5% 0.005 1⁄200
Hope This Helps!!!
Answer:
1/2 would be correct. Hope it helped <3
Evaluate the following expression. 6^-1
Answers
Yope had $200 to buy food for the community picnic. She bought 11 packages of hot dogs and 8 packages of buns. Each package of hot dogs cost $14.05, and each package of buns cost $3.55. How much money did Yope have left after her purchases?
Answers
Answer:
17.05 dollars left
Step-by-step explanation:
11 x 14.05 = 154.55
8 x 3.55 = 28.4
154.55 + 28.4 = 182.95
200 - 182.95 = 17.05
hope this helps you ;)
pls give me brainlest :)
Answer: the answer is b 17.05
Step-by-step explanation:
A triangle has three sides of length x, x+4, and 2x-1. The perimeter of the triangle is 27.
What are the three side lengths of the triangle?
Answers
Answer:
6.10,11
Step-by-step explanation:
x+x+4+2x-1=27
4x+3=27
4x=27-3
4x=24
x=24/4=6
x+4=6+4=10
2x-1=2×6-1=11
1/5x + 4 =1/3x-8
Can you show your work too? That would be great
Answers
Answer:
90
Step-by-step explanation:
1/5x+4=1/3x-8
add 8 to both sides and subtract 1/5x from both sides
4+8=1/3x-1/5x
12=5/15x-3/15x
12=2/15x
divide both sides by 2/15
12÷2/15=x
when dividing by a fraction, invert and multiply
12*15/2=x
90=x
CHECK:
1/5(90)+4=1/3(90)-8
18+4=30-8
22=22
WILL GIVE BRAINLIEST 8+7-4
Answers
Answer:
11
Step-by-step explanation:
8 + 7 = 15.
15 - 4 = 11
Your answer would be 11.
Answer:
11
Step-by-step explanation:
put the 8 and 7 in () so now it is (8+7)-4 then add the (8+7) which is 15 so now it is 15-4 which is 11
point r is rotated about the center shown by 270 clockwise which point is the image of r choose one answer
please help
Answers
Answer: D
Step-by-step explanation:
1/3) Let’s imagine a circle that passes through point R with the given center.
2/3) A 270 ángel takes up 3 on 4 of the circle.
3/3) D is the image of point R.
Clockwise rotation means rotating in the same way or direction as the hands of a clock move.
If point R is rotated about the center by 270 clockwise the image of point R is point D.
What is clockwise rotation?Clockwise rotation means rotating in the same way or direction as the hands of a clock move.
We have,
Point R is rotated clockwise about the center by 270 degrees.
We need to find the position of the R after the rotation.
i.e the image of the point R.
We know that the whole circle rotation is considered to have a 360-degree rotation.
270-degree rotation means it has rotated 3/4th of the circle.
So from the given figure, if the point R is rotated 3/4th of the figure in a clockwise direction the point R will be in the position of point D.
i.e the image of point R will be Point D.
Thus the image of point R is point D.
Learn more about rotation here:
https://brainly.com/question/1571997
#SPJ5
Which defines a circle?
Answers
Answer:
all coplanar points equidistant from a given point
The given line segment has a midpoint at (−1, −2).
On a coordinate plane, a line goes through (negative 5, negative 3), (negative 1, negative 2), and (3, negative 1).
What is the equation, in slope-intercept form, of the perpendicular bisector of the given line segment?
y = −4x − 4
y = −4x − 6
y = One-fourthx – 4
y = One-fourthx – 6
y = Three-halvesx + 1
Answers
Answer:
The given line segment has a midpoint at (−1, −2).
On a coordinate plane, a line goes through (negative 5, negative 3), (negative 1, negative 2), and (3, negative 1).
What is the equation, in slope-intercept form, of the perpendicular bisector of the given line segment?
y = −4x − 4
y = −4x − 6
y = One-fourthx – 4
y = One-fourthx – 6
y = Three-halvesx + 1
A damsel is in distress and is being
held captive in a tower. Her knight in
shining armor is on the ground below
with a ladder. When the knight stands
15 feet from the base of the tower and
looks up at his precious damsel, the
angle of elevation to her window is 60
degrees. How long does the ladder
have to be?
Answers
Answer:
30 feet
Step-by-step explanation:
Let x be the length of the ladder. Then, x cos(60) = 15
If we divide both sides by cos(60), then x = 30 feet.
The length of ladder to be used by knight will be of 30 feet
What is angle of elevation?The angle of elevation is an angle that is formed between the horizontal line and the line of sight. If the line of sight is upward from the horizontal line, then the angle formed is an angle of elevation.
According to the question
The knight stands 15 feet from the base of the tower and the
angle of elevation to her window is 60 degrees.
Therefore, In figure
AB = Height of tower
CA = Distance between knight and tower = 15 feet
BC = Length of the ladder
angle of elevation = 60°
Now ,
Cos(60°) = [tex]\frac{Base}{Hypotenuse} = \frac{distance between knight and tower}{Length of the ladder } = \frac{15}{BC}[/tex]
[tex]\frac{1}{2} = \frac{15}{BC}[/tex]
BC = 30 feet
Length of the ladder = 30 feet
Hence, the length of ladder will be used is 30 feet .
To know more about angle of elevation here :
https://brainly.com/question/21137209
# SPJ2
Using appropriate properties find. 2/5×(-3/7)-1/6×3/2+1/14×2/5
Answers
What angle measure is complementary to 87 degrees?
Answers
I need helpppppppppppp
Answers
2) 3^5 = 15
what is the rate of change of x 3 ,7 ,4,1
y,14,30,18,6
Answers
Answer:
uzthcticsisvyqubxquebcoueqchpquehchqq7phcp7qqeqcqe70chpqhc8qc8h8sliabusdahudhuahu wh8r8ch8hc8qipwa8r7rwh8h8rvh8hv8whivhiwhv8w9hrrhc
iihpicaiphcheihpihphfpi fp8qh p8rnroqbipicrulqAQQvb
Step-by-step explanation:
ugacptqpvyoacabxyipsasyaoX
cilqguog ihi ehiqulbd
bpabuovueqo2
5f/6 = 30
it's a two step equation
Answers
Answer:
f=36
Step-by-step explanation:
5f/6=30
5f=30(6)
5f=180
f=180/5
f=36
New York City uses about one billion, three hundred million gallons of water each day.
Answers
Answer:
ya about 1 billion
Dang that's a lot
Please help 7th ac math
Answers
Answer:
1/2x
Step-by-step explanation:
[tex]\frac{\frac{1}{4}+x *\frac{2}{1} }{\frac{1}{2}\frac{2}{1} } =\frac{2}{4} + 2x= \frac{1}{2} + 2x[/tex]
To solve this type of fraction you need to times the inverse of the bottom fractal, both over and under. In this case the inverse of 1/2 is 2/1
Find the value of y that corresponds to x = –4 in the graph of the equation 2x + 3y = 13.
A)-7
B)7
C)9
D)-9
Answers
2x+21=13
2x+21-21=13-21
2x=-8
2x/2=-8/2
X=-4
The Answer Is B
