3x+4(7-2x) =68. Whats the value of x
Answer:
first we deal with the parentheses.
3x + 28 - 8x = 69
3x - 8x = 41
-5x = 41
x = -8.2
ep-by-step explanation:
Answer:
x = -8
Step-by-step explanation:
Need help Ivan starts with $150 and saves $5 each week. Uma has $45 and saves $20 each week. At what week will they both have the same amount of money? How much money will they each have?
Answer:
$185, 7 weeks,
Step-by-step explanation:
[tex]150 + 5x = 45 + 20x \\ 15x = 105 \\ x = 7[/tex]
Armstrong High School decided to purchase 30 lab coats. One lab coat regularly costs $18.50. If a 15% discount is given on the total purchase, how much will the lab coats cost?
Answer:
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Hola me pueden ayudar con esto es de ley de signos porfavor estoy que me harto :(solo esta me falta y mi mente esta mas alla que paca -34(-5)
Responder:
-39; 170
Explicación paso a paso:
Según la regla de los signos:
(-) * (-) = +
(-) * (+) = -
(+) * (-) = -
(+) * (+) = +
Por lo tanto, usar lo anterior como guía ayudará a comprender las reglas de los signos.
Para :
-34 (-5)
Si la pregunta requiere suma o resta
-34 - 5 = - 39
Si la pregunta requiere multiplicación:
-34 (-5) = 170
Find the equation of a line which is parallel to y= 2/5 x + 17 and passes through (-15,12)
Answer:
y = 2/5x + 18.
Step-by-step explanation:
The line will have the same slope of 2/5.
Using the point-slope form of a line:
y - 12 = 2/5(x - -15)
y - 12 = 2/5(x + 15)
y = 2/5x + 6 + 12
y = 2/5x + 18.
Answer:
y = (2/5)*x + 18
Step-by-step explanation:
Because the line is parallel to the line y = 2/5 x + 17, the slope of the new line has to be the same as well. So far, we have y = (2/5)*x .
Now what we can do is plug in -15 for x and see what we get for y. Because we get -6, we need 18 more to make it 12. Because of that, the y-intercept is 18 to make the equation of the line y = (2/5)*x + 18.
A man has 33 coins in his pocket, all of which are dimes and quarters. If the total value of his change is 630 cents, how many dimes and how many quarters does he have?
Answer:
20 quarters and 13 dimes
Step-by-step explanation:
20 x 25 = 500
13 x 10 = 130
550 + 130 = 630
A 16-ounce package of cereal costs $4.00. What is the unit cost?
Answer:
0.25
Step-by-step explanation:
20y-10x=5 in slope intercept form can you explain the steps
Given:
The equation is
[tex]20y-10x+5[/tex]
To find:
The slope intercept form of the given equation.
Solution:
The slope intercept form of a linear equation is
[tex]y=mx+b[/tex]
Where, m is slope and b is the y-intercept.
We have,
[tex]20y-10x=5[/tex]
We need to isolate y. Add 10x on both sides.
[tex]20y-10x+10x=5+10x[/tex]
[tex]20y=5+10x[/tex]
Divide both sides by 20.
[tex]\dfrac{20y}{20}=\dfrac{5+10x}{20}[/tex]
[tex]y=\dfrac{5}{20}+\dfrac{10x}{20}[/tex]
[tex]y=\dfrac{1}{4}+\dfrac{x}{2}[/tex]
[tex]y=\dfrac{1}{2}x+\dfrac{1}{4}[/tex]
Therefore, the slope intercept form of the given equation is [tex]y=\dfrac{1}{2}x+\dfrac{1}{4}[/tex].
In the first quadrant, you start at (5,7) And move 2 units right and 2 units down What point will you end up on
Rudy has 10 white seashells 23 pink seashells and 21 brown seashells if he divides his seashells equally between 3 friends how many seashells will each friend get?
Answer:
21 shells
Step-by-step explanation:
10+23+21=64
64/3=21.33
always round down, you'll have one left over
Answer:
18
Step-by-step explanation:
10+23+21= 54
54/3=18
X + 9 =20 x=___ help
Answer:
x = 11
Step-by-step explanation:
x + 9 = 20 (Subtract 9 from both sides)
x = 20 -9
x = 11
Verify:
11 + 9 = 20 (Correct)
Bir sınıfta 24 öğrenci vardır. Bu sınıftan rastgele seçi-
lecek öğrencilerin erkek öğrenci olma olasılığı daha
fazla ise bu sınıfta en cok kaç kız öğrenci vardır?Yardım eder misiniz
Answer:
11 çünkü en fazla dediği için yarısının bir eksiği olması lazim
Answer:
Yarısı 12 bir eksiği 11 cevap 11 knk
-4 (y - 2) = 12
what would “y” be?
Answer:
y = -1
Step-by-step explanation:
When solving this equation use the distributive property and get...
-4 (y - 2) = 12
-4y + 8 = 12
-4y = 12 - 8
-4y = 4
y = -1
Find the radius, diameter and area
12 cm
radius
diameter
Blank 1:
Blank 2:
Blank 3:
I need help *^
Answer:
Hey mate.....
Step-by-step explanation:
If your diameter is 12cm then radius is = 6cm and to find the area use the formula pi.r. power 2.....
hope it helps you,
mark me as the brainliest....
Follow me
Name an independent variable that's used for a laptop computer to work.
Answer:
The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound.
Step-by-step explanation:
will give brainliest
Answer:180 degrees
Step-by-step explanation:
A debit card is a plastic payment card than can be used instead of cash when making purchases. it is similar to a credit card. list the pros and cons of having a debit card
Answer: the pros are not having to carry around large amounts of money ofc also if it gets stolen you can get a new card with the money amount that was originally on the stolen card the cons are that someone could steal your information and by things people could hack into you account as well
Step-by-step explanation:
If x = 2/3 and y = 3/4, then 10xy equals
Answer:
10xy would equal 5.
Step-by-step explanation:
[tex]\frac{2}{3}[/tex] * [tex]\frac{3}{4}[/tex] * 10 = [tex]\frac{1}{2}[/tex] * 10 = 5.
Does x=-5 represent a function
A proportion is two ratios that equal each other.
True
False
True
This is the answer..
Answer:
true
Step-by-step explanation:
please i could really use some help, please explain if you can <33
Answer:
27
Step-by-step explanation:
angle 1 = angle 2 because of the vertical angle theorem
2x + 5 = 3x - 6
x = 11
3 (11) - 6
33 - 6
27
A rectangular prism has a length of 5 cm, a width of 2 cm, and a height of 1 cm.
Which expressions can be used to find the volume of the prism?
Select each correct answer.
O 5.2.1
12.1
o 1}(5+2)
o (123•15)
Answer:
The first two options
Step-by-step explanation:
The formula is V= l x w x h So that is why the first one works.
The second one works because of the commutative property of multiplication which says that the number don't have to be in a certain order so They multiplied the first 2 numbers which equals 12 1/2 which means 12 1/2 x 1/2 would work
What fraction is shown on the ruler below?
Correct answer pls!
Answer:
The last one, I think
Step-by-step explanation:
Answer: 4 5/16
Step-by-step explanation: becuase i got 100 on quiz
5 1/4 ft; a= 12 ft 2
1Answer:
Step-by-step explanation:
Mike rides his bike with a constant speed of 16km/h. How long will he take to travel 32 kilometers?
Answer the question in the picture.
Answer:
4
Step-by-step explanation:
have a nice day
у = 3х + 1
у = 3х - 8
Solve by substation
Find y and x
PLEASE HELP ILL GIVE BRAINLIEST AND 5 STARS AND THANKS!!!!! 60 POINTS!!!!
1) y= 2 x- 4 find parallel line through this point (-4,7)
2) y= -6x find parallel line through this point ( 4,9)
3) y= -½ x +3 find the perpendicular through this point ( 0,8)
4) y= -⅓ x find the perpendicular through this point (-2,1)
Answer:
1: y=2x+15
2: y=-6x+33
3: y=-1/2x+8
4: y=-\frac{1}{3}x+0.333
Step-by-step explanation:
f(x)=-2(x+1)^2-12 in the form f(x) =ax^2+bx+c
Answer:
[tex] \boxed{ f(x) = -2x^2 - 4x - 14 } [/tex]
Step-by-step explanation:
f(x) = -2(x+1)²-12
f(x) = -2(x²+2x+1) - 12
f(x) = -2x² - 4x - 2 - 12
f(x) = -2x² - 4x - 14
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
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Step-by-step explanation:
Answer:
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