Answer:
For no. 1:
One of the equations say that y=-7x
So plug in -7x to the other equation as y so you equation would be
-7x= -6x-7
And then, just solve for the variable:
*add -6x to both sides*:
-x= -7
*multiply both by negative one to get a positive variable*
FOR NUMBER 1, THE ANSWER IS:
x=7
Y=-7
For no. 2:
-y=x and your other equation is 3x+5y=20
Plug in x as -y:
-3y+5y=20
*simplify*
2y=20
*divide by 2 on each side to get 1 variable alone*
Y=10
FOR NUMBER 2, THE ANSWER IS:
x=-y
Y=10
Which equation shows how to rewrite the sum of 30 and 45 using their greatest common factor? 30 + 45 = 5(6 + 9) 30 + 45 = 15(2 + 3) 30 + 45 = 5(6) + 15(3) 30 + 45 = 5(6)(3)
Answer: 30 + 45 = 15(2 + 3)
Step-by-step explanation:
The greatest common factor for 30 and 45 will be gotten as follows:
Factor of 30 = 2 × 3 × 5
Factor of 45 = 3 × 3 × 5.
GCF = 3× 5 = 15
Therefore, the equation that shows how to rewrite the sum of 30 and 45 using their greatest common factor will be:
30 + 45 = 15(2 + 3)
A student walks at a rate of 1.5 meters per second for 4 seconds and then stops for 4 seconds. Then the student
continues walking at the original rate.
Which graph best represents the student's walk?
Answer:
A
Step-by-step explanation:
I finished the question and got it right
Graph is a way to represent a lot of data in a visual formal. The graph that best represents the student's walk is graph A.
What is a graph?A graph is a way to represent a lot of data in such a visual formal that it is easy for the user to understand the complete information in one go. Usually, the line of the graph is a function that follows the graph.
As we can see that the y-axis of the graph represents the distance traveled by the student while, the time taken by the student to cover the distance is given on the x-axis.
We know that the rate of 1.5 meters per second, means that the student will cover the 1.5 meters in 1 second, therefore, the line will be a slope that will represent the walk of the student. At time t=4 seconds, a student stopped for 4 seconds therefore, the time will increase but the distance will be constant for the student, therefore, the situation will be represented by a horizontal line.
Hence, the graph that best represents the student's walk is graph A.
Learn more about Graph:
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What is X?
Please help!
Answer:
94
Step-by-step explanation:
the sum of the angles in a triangle add up to equal 180
180-73-13=94
Answer: X = 89°
Step-by-step explanation:
At first glance I could tell this was an isosceles triangle, the angles of an isosceles triangle add up to 180°. So just add 73° + 13° = 91° so then you subtract 91° from 180° and you get 89°.
Potatoes are on sale at both grocery mart and Baldwin hill market and grocery mart a 5lbs bag cost 2.85 and Baldwin they a 7lbs bag cost 4.20
Answer
The first one
Step-by-step explanation:
I think you want to know which store is better so it is
Evaluate 35/a when a=7. The value is
Answer:
a = 5
Step-by-step explanation:
a = 7
35/a
35/(7)
= 5
Hope this helped
27. Jacob collects hats. He has 6 hats already and collects 2
more hats each week. How many week would it take Jacob
to collect 32 hats?
percent as a decimal or fraction. 54% of 85
Answer: 45.9
Step-by-step explanation: its right trust
Answer:
45 9/10 0r 45.9
Step-by-step explanation:
0.54 * 85
45.9
45 9/10
Will give brainliest if you can answer at least one of these, or tell us how to do them
See the attached picture
A woodworker wants to cut a board that is 8.225 feet long into 5 equal-length pieces.How long will each of the cut boards be?
A. 0.1645
B. 1.645
C. 4.1125
D. 41.125
The answer would be B. 1.645 because 8.225/5=1.645
Hope this helps
Have a great day/night
Feel free to ask any questions
Is 5(3x +4) equivalent to 15x + 20 ?
Answer:
yes
Step-by-step explanation:
5(3x+4)
5*3=15
5*4=20
15x+20
Mr. Tyssee got a haircut, which cost $35. He gave the
stylist a 15% tip. How much will he pay for the haricut
including tip?
Answer:
$40.25
Step-by-step explanation:
15% = 0.15, so multiply 35 * 0.15 = 5.25 to get the tip.
Since the answer is asking for both the tip and the cost, add 35 + 5.25, which gives the answer $40.25
WILL GIVE BRAINLIEST-
Complete the table to multiply x^2 - 4x + 4 and 6x + 3.
Here are some values of sequence Q. Write a recursive definition for the sequence.
n Q(n)
1 3
3 8
7 18
Answer: Q(n) = Q(n - 1) + 2.5
Step-by-step explanation:
We have 3 values of the sequence Q(n)
These values are:
Q(1) = 3
Q(3) = 8
Q(7) = 18
I would think that this is a geometric sequence.
Remember that the equation for the n-th term of a geometric sequence is:
A(n) = A(1)*r^(n-1)
where r is a constant, and A(1) is the first term of the sequence.
If we rewrite the terms that we know of Q(n) in this way we get:
Q(3) = Q(1)*r^(3 - 1) = 3*r^2 = 8
Q(7) = Q(1)*r^(7 - 1) = 3*r^6 = 18
Then we have two equations:
3*r^2 = 8
3*r^6 = 18
We should see if r is the same for both equations:
in the first one we get:
r^2 = 8/3
r = (8/3)^(1/2) = 1.63
and in the other equation we get:
r^6 = 18/3
r = (18/3)^(1/6) = 1.34
Then this is not a geometric sequence.
Now let's see if this is an arithmetic sequence.
The n-th term of an arithmetic sequence is written as:
A(n) = A(1) + (n - 1)*d
where d is a constant.
If we write the terms of Q(n) that we know in this way we get:
Q(3) = Q(1) + (3 - 1)*d = 3 + 2*d = 8
Q(7) = Q(1) + (7 - 1)*d = 3 + 6*d = 18
We need to see if d is the same value for both equations.
in the first one we get:
3 + 2*d = 8
2*d = 8 - 3 = 5
d = 5/2 = 2.5
In the second equation we get:
3 + 6*d = 18
6*d = 18 - 3 = 15
d = 15/6 = 2.5
d is the same for both terms, then this is an arithmetic sequence.
An arithmetic sequence is a sequence where the difference between any two consecutive terms is always the same value (d)
Then the recursive relation is written as:
A(n) = A(n - 1) + d
Then the recursive relation for Q is:
Q(n) = Q(n - 1) + 2.5
Whoever fills the rest out I’ll love you forever!
Answer:i need to know what the image is.....
Step-by-step explanation:
which of the following Is a binomial?
A. 7x+21, B. 3/x, C. 8x^2+6x+5, D. 19x^4
Option (A) 7x+21 is the binomial as it has two terms option (A) is correct.
What is polynomial?Polynomial is the combination of variables and constants systematically with "n" number of power in ascending or descending order.
[tex]\rm a_1x+a_2x^2+a_3x^3+a_4x^4..........a_nx^n[/tex]
We have shown some expressions:
Binomial has two terms
A. 7x+21
It is a binomial.
B. 3/x
It is not a binomial.
C. 8x²+6x+5
It is trinomial as it has three terms
D. 19x⁴
It is monomial as it has only terms.
Thus, option (A) 7x+21 is the binomial as it has two terms option (A) is correct.
Learn more about Polynomial here:
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can you help me please
The area of the sector which is the white triangle adding the shaded region is 68.9/360*π*9.28^2=51.78005(rounding to 5th digit after decimal point for accuracy before we do final round for answer)
The area of the white triangle in the sector has area 1/2*9.28^2*sin(68.9)= 40.17223(rounding to 5 digits again for some accuracy.
Now we take out the white triangle from the sector.
51.78005-40.17223=11.60782
rounding to the nearest tenth we get 11.6 cm^2
Problem done!
Hope this helped and if you have any questions about my explanation just ask in the comment and I will answer.
f(x)=3•2^x for x = 5
Evaluate the function
Please help!!!
______________________________
1.) Calculate 2 to the power of 5:[tex]2^5=32[/tex]- When calculating powers, you take the base and multiply by the base however what the number of the exponent is. In this case the base is 2. So you do 2 × 2 × 2 × 2 × 2 = 32.
2.) Multiply 3 and 32:[tex]3[/tex] × [tex]32=96[/tex]So your answer is [tex]\bold{96}[/tex].
______________________________
In a parallelogram ABCD is given. Find the measurement of angle A.
Determine the slow & y-intercept for the line shown. Then write the equation . If you hurry I’ll mark brainliest
Answer:
y = 3x + 4
Step-by-step explanation:
slope is 9/3 simplified to 3
y intercept is 4
Is the following relation a function?
Answer:
no
Step-by-step explanation:
the x value (-1) repeats therefore it ain't a function
help me plz for 20 points
Answer:
i believe DEC is 70 degrees
Find the measure
of DBC
Answer:
[tex]angle \: abc = \\ 4x + 2x = 180 \\ 6x = 180 \\ x = 30 \\ angle \: dbc = 2x \\ = 2 \times 30 \\ = 60[/tex]
need brainliest pls..Problem 3
The bill at dinner was $58.24 before tax and tip.
There is a 6% sales tax. After the tax, an 18% tip is
added.
What is the total including tax and tip?
Answer:
$62.bope this helpsjensbdnd
Sixteen plus five times a number is more than the number plus 32. Write an inequality and solve it.
Answer:
x>4
Step-by-step explanation:
16+5x>x+32
5x>x+16
4x>16
x>4
Answer: answer my question
Step-by-step explanation:
which of the following types of electromagnetic radiation has the shortest wavelength
a.visble
b.infared
c ultraviolet
d.radio
Answer:
i thought it would be - B. ULTRAVIOLET ray
Solve the equation h+28= -37
Answer:
-65
Step-by-step explanation:
h + 28 = -37
-28 -28
h = -65
Solve the equation: х -5 = (-13)
6
Answer:
-73
Step-by-step explanation:
6 x (-13) = -78
x - 5 = -78
x = -78 + 5
x = -73
Use the NET as an aid to compute the surface area.
A. 22
B. 23
C. 24
D. 33.75
Answer:
c
Step-by-step explanation:
7.5 + 7.5 + 4.5 +4.5 = 24
Point D (-8,-1) is reflected over the y-axis. Where is D'?
Answer:
8,-1...............................
