We could find the error first, but if we solve the equation, we can compare our answers to find the error. So,
7x + 12 + 3x = 8
10x + 12 = 8
10x = -4
x = -4/10
x = -2/5.
When we compare the two, we see that our second line is vastly different, and we can easily isolate the mistake, finding that it occurs when they disregard the variable in the 3x term and subtract 8 by 3 rather than combining the terms 3x and 7x together.
Answer:
x=-4/10 = -2/5
Step-by-step explanation:
7x+12+3x=8
(7x+3x) =8-12
10x=-4
x=-4/10
x= -2/5
one third of a number is 6
Answer:
2
Step-by-step explanation:
f(×)=3×2 - 2 and g(×) = 2×+4 , find (f-g)(×)
Answer:
3x^2-2x-6
Step-by-step explanation:
(f-g)(x) = f(x) - g(x)
=3x^2-2-2x-4=3x^2-2x-6
HELLPP ASAP PLS, FIRST PERSON TO ANSWER CORRECTLY GETS BRAINLIEST
Draw the image of quadrilateral ABCD when translated by the directed line segment v. Label the image of A as A', the image of B as B', the image of C as C' and the image of D as D'.
Answer:
Step-by-step explanation:
this may or may not be right but I tried my best
1.
Determine whether the matrices are inverses.
Answer:
No ... A* B=
-1 20
0 -1
which is not
is not 1 0
0 1
Step-by-step explanation:
10 1 0 1
-1 0 -1 10
-1 20
0 -1
Answer:
Hello,
the matrices are not inverses
Step-by-step explanation:
[tex]\begin{bmatrix}10&1\\-1&10\end{bmatrix}*\begin{bmatrix}0&1\\-1&10\end{bmatrix}\\\\\\=\begin{bmatrix}10*0+1*1&10*1+1*10\\-1*0+0*(-1)&-1*1+0*10\end{bmatrix}\\\\\\=\begin{bmatrix}1&20\\0&-1\end{bmatrix}\neq \begin{bmatrix}1&0\\0&1\end{bmatrix}\\[/tex]
96 is 30% of what number?
Step-by-step explanation:
If we substitue "what number" in the question "96 is 30 percent of what number?" with 320, we get this sentence: 96 is 30 percent of 320. Since this statement is true, we know that our answer is correct.
How are a desert and a tundra similar?
A. They both have high levels of precipitation.
B. They have many trees and a lot of vegetation.
C. They have high average temperatures.
D. They have low humidity and low levels of precipitation.
Answer:
D is right option
Step-by-step explanation:
Similarities:
Both the biomes experience less precipitation due to this they have a less diversity of flora and fauna as compared to other biomes like savanna, grasslands, chaparral etc. Let us see how they differ from each other!
Low rain fall _ annual rainfal of lessthan 20cm in deserts, 15-20cm in tundra
Minimal life_ only small shurbs can survive in both kind of environments
Poor drainage.. In deserts, though sandy soil may seem much porous, these are most flood prone areas of world. The tundra is characterised by permafrost soils ie, under the thin layer of soil, a thick ice sheet is present and hence is no seepage.
High range of temperatures: In tundra, the maximum temperatures are recorded in summer (abt 10^C) and minimum during winter(-20 to -30^C). While, in desert too, the temperature range is high but diurnally ie, nights are too cold and day time is scorching.
For every 5 books her students read, Mrs. Fenway gives them 4 homework passes. Juan has earned 12 homework passes. What proportion shows how many books Juan has read?
4/12 = x/5
4/5 = x/12
4/5 = 12/x
5/12 = 4/x
Okay which class.are you first thing is that .. ok tell me then fast.
If (5^(k-1))+(5^(k+1)) = m, what is 2*5^k in terms of m?
If [tex]5^k^-^1+5^k^-^1=m[/tex], what is [tex]2*5^k[/tex] in terms of m?
A) 5m
B) 5m÷2
C) 5m÷13
D) 5m÷26
Answer:
5m
Step-by-step explanation:
5^(k-1)+5^(k-1)=m
Going to combine like terms on left:
2×5^(k-1)=m
Law of exponents applied:
2×5^k×5^(-1)=m
Reciprocal:
2×5^k×1/5=m
Multiply 5 on both sides to obtain the requested:
2×5^k=5m
Match the part of the circle to its correct name.
Answer:
a. major arc
b. minor arc
c. semi circle
d. central angle
URGENT ! HELP ME I WILL MARK YOU BRAINLIEST !!!!
pleasee fasterrr !!!!
Answer:
3b (3a - 4b)
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
9ab - 12b² ← factor out 3b from each term
= 3b(3a - 4b) → C
Convert 2 5/8 to a decimal
Answer:
2.625
Step-by-step explanation:
First convert mixed fraction to improper fraction,
=> 21/8
Then by normal division you will get,
=> 2.625
How would you define a pair of parallel lines?
Answer:
We say that two lines (on the same plane) are parallel to each other if they never intersect each other, ragardless of how far they are extended on either side. Pictorially, parallel lines run along each other like the tracks of a train.
Hope this helps <3
Can you tell I suck at math?
Answer:
B). 34.85°
Step-by-step explanation:
From trigonometric ratios:
[tex] \sin(C) = \frac{opposite}{hypotenuse} [/tex]
Opposite = 16
Hypotenuse = 28
[tex] \sin(C) = \frac{16}{28} \\ \\ C = { \sin}^{ - 1} ( \frac{16}{28} ) \\ \\ C = 34.85 \degree[/tex]
Arun has 25 chocolates with him. He had given 19 to his friends. What fraction of chocolates are with him?
Geometry, please answer question ASAP
Answer:
B.
Step-by-step explanation:
The ratio of the lengths of the sides of a 30-60-90 triangle is
1 : sqrt(3) : 2
From the 1 and 2, we see that the hypotenuse must be twice the length of the short leg.
From the 1 and sqrt(3) we see that the long leg is sqrt(3) times the length of the short leg.
Now we check for these two ratios in each choice.
A.
1 is twice 1/2. Check
sqrt(3)/2 is sqrt(3) times 2. Check
B.
10 is twice 5, not twice 5/2. This does not check.
C.
2sqrt(2) is twice sqrt(2). Check
sqrt(6) is 2sqrt(2) time sqrt(3). Check
D.
6 is twice 3. Check
3sqrt(3) is sqrt(3) times 3. Check
Answer: B.
Answer:
B
Step-by-step explanation:
Angle ratio = 30 : 60 : 90
Side ratio = x : x√3 : 2x
[tex]A) x = \frac{1}{2}\\\\ \ x\sqrt{3 } = \frac{1}{2}*\sqrt{3}=\frac{\sqrt{3}}{2} \\\\2x = 2*\frac{1}{2}=1[/tex]
True
[tex]C) x = \sqrt{2} \\\\x\sqrt{3}=\sqrt{2} *\sqrt{3} =\sqrt{2*3}=\sqrt{6}\\\\2x=2\sqrt{2} \\[/tex]
True
[tex]D) \ x = 3\\\\x\sqrt{3}=3\sqrt{3}\\\\2x = 2*3 = 6[/tex]
True
12^-2 in the simplest form
Because there's a negative sign, it suggests that you should inverse the expression. After inverting it, the power will be positive, and you can square like normal.
Can someone help me with this?
⬇️
-2(10 + x) = 4
Answer:
x = -12
Step-by-step explanation:
-2(10 + x) = 4
Divide each side by -2
-2(10 + x) / -2 = 4/-2
(10 + x) = -2
Subtract 10 from each side
10+x-10 = -2-10
x = -12
The solution to this equation is: x = -12
What is the first degree equation?First degree equation is an equality between members where we find at least one variable.
How to solve this equation?We have the equation:
[tex]\sf -2(10+x)=4[/tex]
First, we must apply the distributive property.
[tex]\sf -20-2x=4[/tex]
Now we move the independent term to the second degree.
[tex]\sf -2x=4+20[/tex]
We add similar terms.
[tex]\sf -2x=24[/tex]
We isolated the term "x".
[tex]\sf x=\dfrac{24}{-2}[/tex]
Finally, we carry out the division. Discovering, in this way, the solution.
[tex]\boxed{\boxed{\sf x=-12}}[/tex]
Please help me solve this, urs really important for me. Thank you
Answer:
24 pieces
Step-by-step explanation:
Adam
1/2's means 2 pieces each so 8 *2 = 16 pieces
Briana
1/4 means 4 pieces each 8*4 = 32 pieces
Carlos
1/9 so 9 pieces each 8*9 = 72 pieces
Carlos - ( adam+ briana)
72 - ( 16+32)
72 -(48)24
7. PLEASE HELP ME
Suppose you have 54 feet of fencing to enclose a rectangular dog pen. The function A= 27x -x2, where x = width, gives you the area of the dog pen in square feet. What width gives you the maximum area? What is the maximum area? Round to the nearest tenth as necessary.
A. width = 13.5 ft; area = 182.3 ft2
B. width = 13.5 ft; area = 546.8 ft2
C. width = 27 ft; area = 391.5 ft2
D. width = 27 ft; area = 182.3 ft2
Answer:
A. width = 13.5 ft; area = 182.3 ft2
Step-by-step explanation:
Suppose you have 54 feet of fencing to enclose a rectangular dog pen. The function A = 27x – x2, where x = width, gives you the. Answer: The width of the dog pen is 13.5 ft and the area is 182.3 square feet.
HELP, round to the nearest penny.
$11,579.9998
Answer:
11,580.00
Step-by-step explanation:
So basically all you need to do is round to the nearest 0.01 or the hundredths place. What you would do is round each place by so and you will eventually get the answer of 11,580.00
Hope this helps!!! Have a good rest of your day! :)
please please help thank you so much
CAN ANYONE PLEASE EXPLAIN TO ME WHAT ON EARTH THIS MEANS
the work that you're required to do has to contain all three requirements in order to earn the maximum number of points, and it also has to be creative (meaning no copying other people's work)
Complete the transformations below. Then enter the final coordinates of the figure.
What number is square and a cube.
E.g.
2²=4
3³=9
What number has a cube root AND a square root??
Answer:
2²=4 is square root and 3³=9 is cube root
Step-by-step explanation:
because 3×3×3=3³and 2×2=2²
What is the value of the expression below when w=2 and x=2
9w - x
Here, all we need to do is subtitute w = 2 and x = 2 into the expression, by multiplying and adding. First, we will muliply 9w:
9w
9 · w =
9 · 2 =
18
Now, all we have to do is use our answer for 9w, and subtract x from it:
9w - x
18 - (2) =
18 - 2 =
16
So, our answer is 16.
Let me know if you have any other questions! :)
n-9 = 13
------------------
Answer:
n-9=13
n=22
Step-by-step explanation:
Answer: n = 22
Step-by-step explanation: to get the answer you have to add 9 to the -9 so that it cancels out. then you are to add the 9 to the 13 and so the answer shall be n=22
What is 30% of R210 and show your working out.
[tex]\\ \qquad\quad\sf\longmapsto 30\%\:of\:210[/tex]
[tex]\\ \qquad\quad\sf\longmapsto \dfrac{30}{100}\times 210[/tex]
[tex]\\ \qquad\quad\sf\longmapsto \dfrac{6300}{100}[/tex]
[tex]\\ \qquad\quad\sf\longmapsto 63[/tex]
Step-by-step explanation:
[tex]★→30\% \: of \: 210 \\=>\frac{30}{100} \times 210 \\ =>\frac{6300}{100} \\ => \boxed{63}✓[/tex]
30% of 210 is 63.What is the value of x?
26°
xº
O
x
= [?]
Answer: x = 154°
Step-by-step explanation:
In this tangents are formed
So the two unknown opposite angles at the curves will be 90° each.
So using angle sum property of a quadilateral in which all angles adds upto 360°
We get x as
90+90+26+x = 360
206+x = 360
x = 360 - 206
x = 154
please click thanks and mark brainliest if you like :)
Amanda ordered a ham and salad roll for
$3.50, an apple muffin for $1.60 and an
orange juice for $1.10. How much change did
she receive from 10.00?
Answer:
2.80 cents
Step-by-step explanation:
$3.50
$1.60
$1.10
-------+
7.20 10.00- 7.20 = 2.80
Answer: $3.8
Explanation:
Cost of Ham and Salad Roll = $3.50
Apple Muffin = $1.60
Orange Juice = $1.10
Total cost = $6.2
Total she received back = 10-6.2
= $3.8
Therefore she received back $3.8
Must click thanks and mark brainliest
Explain the process due to which rain falls ? Class 4 - EVS
Answer:
As you may already know, water drops that fall from the cloud are considered "rain".
The Sun's heat turns the moisture or water from leaves, plants, rivers, lakes, and oceans - and turns it into gas or also called, vapor. This water vapor then turns into gas and disappears into the air. When it gets mixed with the air, it cools down. When it cools down, it changes into small water drops, which then form a cloud. These small water drops join together with other water drops to create larger and bigger water drops.
You may know this now because this is the easiest part. What happens when something gets heavy or is over-filled? It falls down, right?
So, the large drops from water fall down as they get too heavy for the cloud to carry. These big droplets falling down on us are called Rain.
