Answer:
x=-3
Step-by-step explanation:
-4x-10=x+5
-x -x
-5x-10=5
+10 +10
-5x=15
/-5 /-5
x=-3
Can someone explain to me how to do this? I will give brainliest.
Answer:
4x+7 = 19
4x = 19 - 7
4x = 12(divide both sides by 4 to get x)
4x/4 = 12/4
x = 3
Step-by-step explanation:
Like this way you can do all
AC = 9x - 12, CD = 4x + 18, AD = ?
If we assume that point C is somewhere on segment AD, then,
AD = AC + CD
AD = (9x-12) + (4x+18)
AD = (9x+4x) + (-12+18)
AD = 13x+6 is the answer
Find the equation of the perpendicular bisector passing through each segment.
1. (8,4) and (12, 2)
2.(3-6) and (9, 12)
Answer:
Step-by-step explanation: 2Δ≥㏒8,4 and 12,2
all three angles of a triangl add up to 180 degrees. the three angles measuure 75 degrees, 10x degrees, and 5x degrees. write and solve an equation for x. then find the measure of the two unknown angles.
Answer:
elaborate more.....
Step-by-step explanation:
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Find the slope-intercept form of the equation of each of the following lines.
Passes through (6, 4) and has slope =1/2
Answer:
[tex]y=\displaystyle\frac{1}{2}x+1[/tex]
Step-by-step explanation:
Hi there!
Slope-intercept form: [tex]y=mx+b[/tex] where m is the slope and b is the y-intercept
We're given that the slope is [tex]\displaystyle\frac{1}{2}[/tex]. Plug this into [tex]y=mx+b[/tex]:
[tex]y=\displaystyle\frac{1}{2}x+b[/tex]
Now, to solve for the y-intercept, plug in the point (6,4) and solve for b:
[tex]4=\displaystyle\frac{1}{2}(6)+b\\\\4=3+b\\b=1[/tex]
Therefore, the y-intercept of the line is 1. Plug this back into [tex]y=\displaystyle\frac{1}{2}x+b[/tex]:
[tex]y=\displaystyle\frac{1}{2}x+1[/tex]
I hope this helps!
Please help! I don’t understand it my teacher wasn’t here..
Let's solve for b first.
Since b and 147 are opposite, b is also equal to 147 degrees.
b=147
Since c and 147 are supplementary angles, they sum to 180 degrees.
c+147 = 180
Subtract 147 from both sides
c = 33
Help can someone help me on this question and explain it please ♡♡
Answer:
i can barley read the pencil work im really sorry.
Step-by-step explanation:
What is the solution of the equation m - 8 = -14?
[tex]\large\bf\blue{ \diamond} \rm \: \: m \: - \: 8 \: = \: - 14 \\ \\ \large\bf\blue{ \diamond} \rm \: \: m \: = \: - 14 \: + \: 8 \\ \\ \large\bf\blue{ \diamond} \rm \: \: m \: = \: - 6[/tex]
3.Kelly borrowed $16.30 from her
mom. She also owed her friend
51120 What number represents
Kelly's total debt?
R 3. The mean of 4 numbers is 8. Three of the numbers add up to 22. What is the last number?
let the last number be x
we know,
[tex] \boxed{mean = \frac{sum \: \: of \: \: all \: \: observations}{number \: \: of \: \: observations} }[/tex]
So,
[tex] \hookrightarrow \: 8 = \dfrac{22 + x}{4} [/tex]
[tex] \hookrightarrow \: 8 \times 4 = 22 + x[/tex]
[tex] \hookrightarrow \: 32 = 22 + x[/tex]
[tex] \hookrightarrow \: x = 32 - 22[/tex]
[tex] \hookrightarrow \: x = 10[/tex]
therefore, the last number is 10.
h(x)=3x^2+7
h(0)
help!
Answer:
h(0) = 7
Step-by-step explanation:
by saying h(0) it is asking you to plug in 0 as the x value
3(0)^2 = 0
0 + 7 = 7
The elder brother has 280 yuan, and the younger brother has 56 yuan, How many times is the money of the elder brother?
Step-by-step explanation:
how many times is the money of the elder brother ?
this is the same to ask "how many times do I need to add the money of the younger brother to get the money off the older brother ?"
this is simply done by division : how many times do 56 fit into 280 ?
280 / 56 = 5
so, the elder brother has 5 times the money of the younger brother.
Answer:
56+56+56+56+56
hence
5 times
Plz plz plz plz plz plz
Help
Answer:
OK mate don't freak out its easy
First things first x and y are height and base and 10cm is hypotenuse.
40degree is the angle
Now.
The sin angle is an trigonometric angle which deals with height and hypotenuse.
It's formulae is...... Sin angle =height /hypotenuse
So sin 40 = x/10
X= 10 * sin 40
X= 10*0.64
Hence x=6.4 cm
Remainder sin 40 is 0.64
Again
The cos angle is an trigonometric angle which deals with base and hypotenuse
It's formulae is...... Cos angle =base /hypotenuse
So cos 40 = y/10
Y= cos 40 *10
Y= 0.76*10
Hence y = 7.6cm
Remainder cos 40 = 0.76.
Thank you
Answer:
do not worry it is 63,9 degrees
Perform the indicated operations. Write the answer in standard form, a+bi.
(8 - i)^2 + (8 + i)^2
Answer:
[tex] {(8 - i)}^{2} + {(8 + i)}^{2} \\ \\ thank \: you[/tex]
Find f(g(-4)) if f(x) =7/x+2
and g(x) = (x + 5)^2. Options: -5/2 , -7/2 , 37/4 , 7/3
Answer:
7/3
Step-by-step explanation:
f(x) =7/(x+2)
g(x) = (x + 5)^2
f(g(-4))=
First find g(-4)
g(-4) = (-4+5)^2
=(1)^2 =1
Then find f(1)
f(1)= 7/(1+2)
= 7/3
Mike,nancy,tim and sara each have eights-four basketball cards how many dozen basketball cards do they have in all
Answer:
28 dozen.
Step-by-step explanation:
84 = 7*12 = 7 dozen.
4 * 7 = 28.
15 less than the product of 2 times a number m is 17. Find the number m.
You don't need to label your answer. Just the number please!
Answer:
(squiggly equal sign) 10.7
Step-by-step explanation:
3m - 15 = 17
+ 15 +15
3m = 32
___ ___
3 3
m (squiggly equal sign) 10.7
Dissimilar to similar fractions
1. 3/5 and 2/3
2. 7/9 and 2/3
3. 4/6 and 1/8
4. 1/4 and 2/3
5. 4/6 and 3/5
( Please someone answer me? I really need help. I been struggling for 3 hours, still I can’t get the right answer. Please just leave a reply even answer only or reply to this question please )
Help me with this please I’d appreciate it
The coordinates of Point [tex]D'[/tex] are [tex](42, 0)[/tex]
[tex]\text{Algebraic Representation: } (x,y) \to (7x,7y)[/tex]
Gloria collected 23 faintail and comet goldfish. There were 11 fewer fantails than comets. How many comets did Gloria have?
Triangle ABC is a right triangle. What is the length of AC?
Answer:
AC = [tex]\sqrt{58}[/tex]
Step-by-step explanation:
Calculate AC using the distance formula
d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]
with (x₁, y₁ ) = A (0, - 2) and (x₂, y₂ ) = C (3, 5 )
AC = [tex]\sqrt{(3-0)^2+(5-(-2)})^2[/tex]
= [tex]\sqrt{3^2+(5+2)^2}[/tex]
= [tex]\sqrt{9+7^2}[/tex]
= [tex]\sqrt{9+49}[/tex]
= [tex]\sqrt{58}[/tex]
what is 2 {4 (9 - 7) + 1} quickly please
Answer:
solution,
= 2{4×2+1}
=2{8+1}
=2×9
=18
Step-by-step explanation:
This is the solution
Answer:
18
Step-by-step explanation:
[tex]2(4(9 - 7) + 1)[/tex]
[tex]2(4 \times 2 + 1)[/tex]
[tex]2( 8 + 1)[/tex]
[tex]2 \times 9[/tex]
[tex] = 18[/tex]
A merchant has coffee worth $40 a pound that she wishes to mix
with 60 pounds of coffee worth $90 a pound to get a mixture that
can be sold for $70 a pound. How many pounds of the S40 coffee
should be used?
O 20 pounds
O 40 pounds
100 pounds
O 50 pounds
Answer:
Step-by-step explanation:
let x = the number of pounds of cheaper coffee.
Since the merchant is mixing this with more expensive coffee, then
x + 60 = the number of pounds of medium priced mixed coffee.
The equation is gotten from this
+ =
(x)($40) + (60)($90) = (x + 60)($70) or
40x + 5400 = 70(x + 60)
Solve that equation and get x = 40
Answer: 40 pounds of $40 coffee.
i hope this helped
Convert 0.764 into a fraction?
Answer:
191/250
Step-by-step explanation:
plzz add my answer as brainliest
write each fraction as a decimal 5/8
Answer:
0.625
Step-by-step explanation:
Just take a calculator and devide it
help pls! i don’t know how to do it
I'd go for c , x is greater than -3
What do the sums of these expressions have in common?
-7+7
14 + (-14)
-2/3 + 2/3
125 + (-125)
Answer:
0
Step-by-step explanation:
-7+7=0
14+(-14)=0
-2/3+2/3=0
125+(-125)=0
9 2
n+ 2 = 6 how do to solve this problem?
Write the equation of a line in slope-intercept form, y = mx + b, between the following
points: (2, 5) and (-4,-4).
Answer:
[tex]y = \frac{3}{2} x + 2[/tex]
Step-by-step explanation:
In the slope-intercept form y= mx +b, m is the slope and b is the y- intercept.
[tex]\boxed{slope = \frac{y1 - y2}{x1 - x2} } [/tex]
Using the formula above,
[tex]slope = \frac{5 - ( - 4)}{2 - ( - 4)} [/tex]
[tex]m = \frac{5 + 4}{2 + 4} [/tex]
[tex]m = \frac{9}{6} [/tex]
[tex]m = \frac{3}{2} [/tex]
Substitute the value of m into the equation:
[tex]y = \frac{3}{2} x + b[/tex]
To find the value of b, substitute a pair of coordinates into the equation.
When x= 2, y= 5,
[tex]5 = \frac{3}{2} (2) + b[/tex]
5= 3 +b
b= 5 -3
b= 2
Thus, the equation of the line is [tex]y = \frac{3}{2} x + 2[/tex].
what is the formula for speed when speed isnt given
Step-by-step explanation:
what do you mean lf speed is not given what we have tofind
Answer:
v = d/t, perhaps.
Step-by-step explanation:
Velocity (speed) is defined as distance traveled divided by the time it takes to travel that distance.
This gives an average speed. For example, I'll be taking a trip tomorrow of about 150 miles. If it takes me 3 hours, my average speed is v = 150/3 = 50 miles per hour.
That does not mean my speed is constantly 50 miles per hour; I sometimes go slower than that (maybe even stopping for red lights!), and sometimes I'll be going faster than that.
A lot of school math problems assume a constant speed.