Answer:
y=-17, x=-8
Step-by-step explanation:
x-9=3x+7
Isolate x for x-9=3x+7;
x-9=3x+7
Add 9 to both sides:
x-9+9=3x+7+9
Simplify;
x=3x+16
Subtract 3x from both sides;
x-3x=3x+16-3x
Simplify;
-2x=16
Divide both sides by -2;
-2x/-2=16/-2
simplify: -2x/-2
=x
Simplify 16/-2:
x=-8
For y=x-9 substitute x=-8;
y=-8-9
Simplify;
y=-17
The solutions to the System of equations are;
y=-17, x=-8
here's a formula:
a=2b-c
what is the value of a if b=11 and c=3?
Answer:
a = 19
Step-by-step explanation:
a=2b-c
a= 2(11) - 3
a = 22 - 3
a = 19
Answer:
a = 19
Step-by-step explanation:
2 x 11 = 22 - 3 = 19
So a = 19
A mirror is placed on the ground between a 6 ft person and a
tree. If the mirror is 8 feet from the person and the distance
between the mirror and tree is 26 feet, find the height of the tree.
Answer:
Step-by-step explanation:
h/26=6/8
h=26(6)/8
h=19.5 ft
Question 13 (5 points)
Keith has $75 from a saved allowance. He needs at least $135 for a new pair of
sneakers. Keith needs no less than more to buy the sneakers.
A) $72
B) $60
O g) 878
D) $56
Question 14 (5 points)
help
Fred drew 2/3 on a number line. Sara broke her number line into 6 equal pieces but found the same fraction on the number line as Fred. What fraction did Sara make?
Answer:
4 / 6
Step-by-step explanation:
Fred fraction = 2/3
Sarah formed a fraction by dividing her number line into 6 equal pieces. This is given as;
x / 6
Since her fraction is equal to that of fred, we have;
x / 6 = 2 / 3
x = 6 * 2 / 3 = 4
Sarah Fraction = 4 / 6
Convert into kilometer 213 km 42 m
Answer:
213.042 km
Step-by-step explanation:
We need to convert 213 km 42 m to km.
We know that,
1 km = 1000 m
or
1 m = (1/1000)km
So,
42 m = (42/1000) km
It means,
[tex]213\ km\ 42\ m=213\ km+\dfrac{42}{1000}\ km\\\\=213.042\ km[/tex]
So, the required answer is 213.042 km.
Match the missing angle measurement to the diagram
Just number 14 pleaseee
9514 1404 393
Answer:
Step 2 is where the error lies.
The solution is x > 6
Step-by-step explanation:
The rules for solving inequalities are substantially similar to the rules for solving equations. If you perform the same operation on both sides of the comparison, the value of the variable does not change. (The exception is when that operation is an "order-reversing" operation. See comment below.)
Kahal's steps would be expected to be the same ones you would use:
Step 1: 4x -4 > 20 . . . given
Step 2: 4x > 24 . . . add 4 to both sides
Step 3: x > 6 . . . . . divide by 4
We note that our Step 2 is different from Kahal's Step 2. In Step 2 is where his mistake was made. He added 4 to one side and subtracted 4 from the other side.
__
Exception (order-reversing operations)
The operation you will usually run across in high-school algebra that will reverse ordering is multiplication (or division) by a negative number. Consider, for example, ...
1 < 2
-1 > -2 . . . . . both sides of the inequality multiplied (or divided) by -1
Notice that the order has been reversed: the larger magnitude number is now "less than".
The 15th term of an arithmetic sequence is 110 and the 19rd term of the sequence is 134.
a) Find the common difference.
b) Find the first term.
c) What is the 25th term?
Step-by-step explanation:
a) Common Difference = ?
15th term = 110
19th = 134
134 - 110
= 24/4
= 6
Common Difference = 6
b) First term = ?
110 = x+ (14) 6
x = 110 - 84
x = 26
First term = 26
c) 25th term = ?
= x 25 = 26+ (25)6
= x 25 = 176
25th term = 176.
Which of the expressions have like terms? Select all that apply
A. -6m + 4m
B. t + 6.75t
C. 10m + mn
D. 6 - 6p
E. 9xy - 4xy
F. 2y + 5x
Answer:
A, B, and E
Step-by-step explanation:
When talking about like terms you need to look at the variable. You have to look at which has the same variables and then you can determine which are like terms.
For A --> -6m + 4m both have m as a variable. They can be combined. Which is why they are like terms. Do the same for the rest.
What would NOT be like terms?
C-- 10m + mn
This is wrong because of the variable. the variable for 10m is m. When there is only a variable you can pretend there is a 1 (For example, m can be 1m but we ignore that). mn is a variable as a whole. So if we added one to the front, the variables of 10m and 1mn would not match! It does not matter if they both have an m, because the value would be different either way.
Hope this helps!!
-Ketifa
What is 3 divided by 4?
Answer:
3/4 is 75/100 or 0.75
Step-by-step explanation:
-5 + 2( x - 2 )
Show your work
Answer:
Step-by-step explanation:
look at the image
A team can spend no more than $300 on shirts. The team has already spent $80. How many shirts for $15 each can they still buy?
Answer:
80 + 15x ≤ 300
Step-by-step explanation:
max amount = $300
already spent = $80
$300 - 80 = $220
shirts = $15 each
80 + 15x ≤ 300
$80 that is already spent + $15x ≤ $300 maximum
x = number of shirts
what is The graph of y=-3x+4
Answer:
Use the slope-intercept form to find the slope and y-intercept.
Slope: −3 . y-intercept: (0,4)
Any line can be graphed using two points. Select two x values, and plug them into the equation to find the corresponding y values.
X Y
0 4
3/4 0
Graph the line using the slope and the y-intercept, or the points.
Slope: −3. y-intercept: (0,4)
x y
0 4
4/3 0
Step-by-step explanation:
PLEASE, help! thank u
4th time
Answer:
I do not no the answer but I had an assignment on khan like this before so maybe check khan academy if u haven't yet
¿En qué caso es más útil emplear el método de sustitución? ¿En qué caso es más útil emplear el método de reproducción
Answer:
I know this
Step-by-step explanation:
but I dont :) goodluck tho
using the triangle below find the measure of angle B round your answer to the nearest whole number
Answer:
angle v = 46 degrees
Step-by-step explanation:
tan-1 = [tex]\frac{opposite}{adjacent}[/tex]
tan-1 V = [tex]\frac{21}{20}[/tex]
[tex]\frac{21}{20}[/tex] = 1.05
tan-1 V = 1.05
V = 46.397
round to the nearest whole number:
46.397 = 46
Find the measurement of the exterior
A. 100°
B. 15°
C. 145°
D. 35°
Answer:
C
Step-by-step explanation:
(180- 80+65 = 35) sum of the angle in a triangle.
to get the exterior angle
180 - 35 = 145 (sum of angle on a straight line is 180)
...C. 145° on Ap3x.....
As she climbs a hill, a cyclist slows down from 25 km/hr to 3 km/hr in 10 seconds. What is her deceleration?
could you help please
What are the angle measures?
a. Equation:
3x + 21 = 6x - 60 {measure of corresponding angles is the same}
3x - 6x = -60 - 21
- 3x = - 81
b. Value of x:
x = 27
c. Ange measures:
3x + 21 = 3×27 + 21 = 81 + 21 = 102°
or:
6x - 60 = 6×27 - 60 = 162 - 60 = 102°
I know school can be hard and believe me I know sometimes u just want to quit but being in school can make a difference so I want to get u a lot of points please do your best have a good day or night
Answer:
Step-by-step explanation:
Thanks fam have a. Good night
What is the exponential function (0,25) (1,50) (2,100) (3,200) (4,400)
Answer:
Step-by-step explanation:
If it is exponential dividing any term by the preceding term will be a constant, the common ratio or rate. 50/25=100/50...=2 The initial value, a, (at x=0) is 25 so the general form is
y=ar^x we have a=25 and r=2 so
y=25(2^x)
1/3 x 3/8 with steps please. And thank you.
Answer:
(1/3) * (3/8) = 1/8
Step-by-step explanation:
Multiple: 1/3* 3/8
= 1 · 3/3 ·8
= 3/24
= 1 3/8·3
= 1/8
In the given diagram(see image) , TAX and TBY are tangents to the circle and C is a point on the major arc.
Question :
If <CAX = 65° , <CBY = 76° , Calculate <ATB.
Answer:
∠ATB = 102°
Step-by-step explanation:
Since ∠CBY is less than 90°, CB is not a diameter.
I did this in my head so I drew a sketch to show that around about way I did it. sketch attached:
I drew a third line from X to Y that is tangent to the circle at C.
Because each pair of tangent lines to a common point are equal, we have made three isosceles triangles.
Now we know 2 of the three angles to ΔXYT, 180 - 50 - 28 = 102° for ∠ATB
Answer:
102°Step-by-step explanation:
Given
∠CAX = 65° , ∠CBY = 76°To find
∠ATBSolution
Refer to attached picture
∠CAX= ∠CBA as same arc intercepted ∠CBY = ∠CAB as same arc interceptedTAX is a straight angle and:
∠TAB = 180° - (∠CAX + ∠CAB) = 180° - (65° + 76°) = 39°∠TBA = ∠TAB as two tangents intersect at same distance, their opposite angles are therefore same. ΔATB is an isosceles triangle.
∠ATB = 180° - 2*39° = 102°What are the zeros of the polynomial function?
Answer
12 and 20
Step-by-step explanation:
Geometry student reference sheet
Answer:
i am so sorry but i need points a=5
Please answer this math problem soon! No need for an explanation
Answer:
32
Step-by-step explanation:
The sum of two numbers is 23. Twice one number increased by 6 is the same as 4 times the other number decreased by 2. What is the largest of the two numbers?
Answer:
32.5
Step-by-step explanation:
23x6÷4-2 and that's how you get your answer
Answer as quickly as you possibly can
Answer:
m = 3/2
Step-by-step explanation:
You want to find the slope, or the change in y coordinates over change in x-coordinates.
The first given point is E(-2, -4)
The second point is F(2, 2)
Coordinates are given in (x, y), so following the equation and computing the x and y coordinates of E - F for both the numerator and denominator:
[tex]\frac{y_2 - y_1}{x_2-x_1} = \frac{-4 -2}{-2 -2} = \frac{-6}{-4} = \frac{3}{2}[/tex]
You could also have went the other way and calculated F - E for the numerator and denominator and get the same answer.
Finally, to check you can also look at the graph through the rise over run (rise/run) method and see that from E, you go up 3 (rise) and to the right 2 (run) to get to the next point on the line.
What is the square root of √25
Answer:
5 is the square root of 25
Step-by-step explanation:
Have a great day!
and can I maybe please have brainliest?
Thanks!
Answer:
5 is the square root of √25
Step-by-step explanation:
hope it helps you
