Answer:
x=-16
y=40
Step-by-step explanation:
y=-4x-24
y+2x=8
its the same y. Use substitution
(-4x-24)+2x=8
-2x-24=8
-2x=32
x=-16
We found x!
substitute x in either equation
y+2x=8
y+2(-16)=8
y-32=8
y=40
Answer: (-16, 40)
Step-by-step explanation: Using substitution, you can but the first y=-4x-24 into the second equation y+2x=8. So, you take what y is (which is -4x-24) and substitute it for the second y in the equation y+2x=8.
Your equation should now look like this (-4x-24) + 2x = 8.
You can then solve -4x -24 +2x =8. Combine like-terms (-4x+2x) to get -2x-24=8. Then use inverse operations and add 24 from both sides (so from the -2x-24 side and 8 side). This will then give you -2x=32. divide both sides from -2x to get:
x = -16
Then, plug in x= -16 into the first equation (y= -4 (-16) - 24). Then use PEMDAS and multiply -4 and -16 to get +64. Subtract 24 to get:
y = 40
I pay 25,000 for a car it depreciates at a rate of 10% what is the value of the car in 7 year
Answer:
2500
Step-by-step explanation:
3 is what percent of 75?
Answer:
4%
Step-by-step explanation:
First, we turn this into a fraction:
3/75 = 1/25 = 4%
So 3 is 4% of 75
Using the percentage expression 4 percent of the number 75 is 3.
We have,
Given percentage = M
Under the condition, an expression can be written as,
M% of 75 = 3
Solve for M.
M/100 x 75 = 3
Multiply 100 on both sides.
75M = 3 x 100
75M = 300
Divide 75 on both sides.
M = 300/75
M = 4
Cross checked.
4% of 755
4/100 x 75
4/4 x 3
1 x 3
3
True.
Thus,
4 percent of number 75 is 3.
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In a normal respiratory cycle the volume of air that moves into and out of the lungs is about 498 mL. The reserve and residual volumes of air that remain in the lungs occupy about 1990 mL and a single respiratory cycle for an average human takes about 4 seconds. Find a model for the total volume of air V(t) in the lungs as a function of time.
Answer:
The model is [tex]V(t)=2239+249\sin(\frac{\pi}{2}t)[/tex].
Step-by-step explanation:
Consider the given information.
The volume of air inside the lungs increases or decreases so for this we will use the basic sine function [tex]B(t)=d+a\sin[b(t+ \frac{c}{a})][/tex] as our parent function.
Let us assume that the phase shift is 0 it means [tex]\frac{c}{b}=0[/tex].
The air that moves into and out of the lungs is about 498 mL.
It means the amplitude of the function will vary by 249(half of 498).
The reserve and residual volumes of air that remains in the lungs occupy about 1990 mL which is the minimum air in the lungs.
So, the max air will be: 1990+498 =2488 mL
And the average will be d=1990+249=2239 ml
The horizontal stretch will be [tex]b=\frac{2\pi}{4}=\frac{\pi}{2}[/tex] as we know that period of [tex]y=\sin t[/tex] is [tex]2\pi[/tex] and respiratory cycle for an average human takes about 4 seconds.
Hence, the model is [tex]V(t)=2239+249\sin(\frac{\pi}{2}t)[/tex].
Who know the answer to this?
Answer: A (w=2a+3)
Step-by-step explanation: The answer is A because for every week after the tiger is born it gains 2 pounds. that's the w=2a part. The +3 is there because the tiger started with 3 pounds.
Which of the following figures is a polygon?
OA
3
OD
Answer:
b
hope this helps:)
Step-by-step explanation:
please hurry!!!
For the class picnic, 25 liters of punch were purchased. 6 liters were left over. How many gallons of punch were used at the picnic? (1 liter is approximately 0.26 gallons)
Answer:
Gallons of punch used = 4.94 gallons
Step-by-step explanation:
Given that:
Liters of punch purchased = 25 liters
Liters of punch left over = 6 liters
Liters of punch used = 25 - 6 = 19 liters
According to the given statement;
1 liter = 0.26 gallons
19 liters = 0.26*19 gallons
19 liters = 4.94 gallons
Hence,
Gallons of punch used = 4.94 gallons
Need ASAP. Only answer if ur confident in ur answer
Answer:
360 m²Step-by-step explanation:
surface area of a square base pyramid = base area + 4 ( triangular sides area)
where:
base = 12 m
side height length = 9 m
Surface area = 12² + 2(12)9
= 144 + 216
= 360 m²
Which equation represents the line that passes through the point (-1.2, -5.6) and has a slope of -2.9
Answer:
[tex]y+5.6 = -2.9 (x + 1.2)[/tex]
Step-by-step explanation:
Equation of straight line in point slope form is given as
[tex]y -y_1 = m(x- x_1)[/tex] -------------(1)
Here
[tex]m =-2.9[/tex] and [tex](x_1, y_1) = (-1.2, -5.6)[/tex]
Substituting values in equation (1)
[tex]y+5.6 = -2.9 (x + 1.2)[/tex]
Use the information below.
• Low tide is 1 foot below the average water level.
• High tide is 5 feet higher than low tide.
Write an integer that represents the average water level relative to high tide.
The average water level relative to high tide is represented by the integer
. need help asap please I am not a college student I go to middle school.
Answer:
how is this middle school?
Step-by-step explanation:
what the heck
Emergency plsssssssssssss answer this what is 0.43 rounded to the nearest hundredth
Answer:
0.430
Step-by-step explanation:
What dose 750 divided by 30 equals what
Answer:
25
Step-by-step explanation:
30 goes into 750 25 times.
You can check your answer by multiplying 30 by 25 which equals 750. Therefore your answer is correct.
The 750 divided by 30 equals 25. This means that if we distribute 750 objects into 30 groups equally, each group would contain 25 objects.
When we divide 750 by 30, we can calculate the result as follows:
750 ÷ 30 = 25
Therefore, 750 divided by 30 equals 25. This means that if we distribute 750 objects into 30 groups equally, each group would contain 25 objects. Division is the arithmetic operation that allows us to determine how many times one number (the divisor) can be subtracted from another number (the dividend) without resulting in a negative value.
In this case, when we divide 750 by 30, we find that the quotient is 25. This represents the number of groups or units we can obtain when dividing 750 into 30 equal parts. Division is a fundamental mathematical operation used in various real-life scenarios, such as distributing resources, calculating averages, and solving ratio problems.
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Which operation would help solve for y?
y+6=52
Choose 1 answers
Adding six to each side
Subtracting six from each side
Adding 52 to each side
Şubtracting 52 from each side
After applying the correct operation to each side, what is y?
Y=
Answer:
Step-by-step explanation:
the first step is subtractiong 6 from each side
y+6=52
y+6-6=52-6
y=46
Answer: It would be Y+6=52
HELP MY HOMEWORK IS DUE IN 20 MINUTES
Answer:
c
Step-by-step explanation:
Answer:
Graph C.
Step-by-step explanation:
a function is determined by every input having a specific outpit. since each input of x has a specific answer for Y, graph C is a function.
I need help asap please
WARN ME AGAIN SEE WHAT HAPPENS I GAVE YOU A SITE AND IT WAS YOU OPTION TO IGNORE IT SO DON'T EVER DO THAT AGAIN
L O S E R
Which of the following is equivalent to sin(30°)?
Question 2 options:
A) cos(60°)
B) cos(90°)
C) sin(60°)
D) cos(30°)
Answer:
A. cos(60°)
Step-by-step explanation:
sin(30 degrees) = 0.5
cos(60°) = 0.5
cos(90°) = 0
sin(60°) = √[tex]\frac{3}{2}[/tex]
cos(30°) = √[tex]\frac{3}{2}[/tex]
so it's A.
Ace
The sin 30° is equivalent to the expression cos 60°. Then the correct option is A.
What is trigonometry?Trigonometric functions examine the interaction between the dimensions and angles of a triangular form.
The equivalent is the expression that is in different forms but is equal to the same value.
The expression is given below.
⇒ sin(30°)
We know that the formula which is written as,
sin (90° - x) = cos x
Then by the above property, the expression is written as,
sin 30° = sin (90° - 30°) = cos x
sin 30° = cos 60°
The sin 30° is equivalent to the expression cos 60°. Then the correct option is A.
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What is 45% of 156?
Thanks.
Answer:
45% of 156 = 70.2
Below is a 6-sided dice with the numbers 1-6. What is the probability of landing on a number greater than 0?
Write your answer as a fraction. Then choose the
likelihood of the event.
Submit
Impossible
Unlikely (Less than 1/2)
Neither Likely nor Unlikely (1/2 or Even Chance)
Likely (Greater than 1/2)
Certain (100%)
HELP ILL GIVE YALL BRAINLIEST
Solve 3x^2−5x+8=0 using the Quadratic Formula
Answer:
The correct answer is,
[tex]x = \frac{5 + \sqrt{71i} }{6} \frac{5 - \sqrt{71i} }{6} [/tex]
there is a come between these two things.
I couldn't find the coma.
sorry.
Use the distributive property to simplify the expression 5(4x + 8)
Answer:
20x+40
Step-by-step explanation:
Hey there! first, we multiply 5 x 4x = 20x. then we multiply 5 x 8 = 40
now we add them but in the 20x there is x so we can't add them but we can write them as 20x + 40
Answer:
[tex]\huge\boxed{\sf{20x+40}}[/tex]
Step-by-step explanation:
Hello.
The Distributive Property states that
a(b+c)=ab+ac [tex]\mapsto[/tex] we multiply a times b and c
Now, simplify the given expression:
5(4x+8)
20x+40
I hope it helps.
Have a great day.
[tex]\boxed{imperturbability}[/tex]
If ab and cd are congruent what is the measure of chord ab
Answer:
the measure of cord AB will be same as cord CD that is 21 units
because these both are congruent
In Jasón home room 8/30 of the students like soccer best , 6/15 like volleyball best , and 5/15 like baseball best . Select true or false . A. In simplest form 2/15 of the students like soccer best , B. 3/5 of the students like volleyball best , C. 1/3 of the students like baseball best .
Answer:
False and B
Step-by-step explanation:
WHICH ONE IS CORRECT
Answer:
its 23
Step-by-step explanation:
46 ÷ 2
= 23
divide by 2 because it says " bd bisects abc "
What value of c makes the equation true? −3−3/4(c−4)=5/4 Drag and drop the correct number in the box. c = Response area
will give brainlyst
Answer:
c = -5/3
Step-by-step explanation:
Solve using algebra.
After you do 11 steps, that is the answer.
Please mark as Brainliest!!!PLEASEEEEEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPPPPPPPPPPPP
Which answer choice describes y=-3x^(2) +7x - 2 Question 9 options: opens up with a maximum opens down with a maximum opens up with a minimum opens down with a minimum
An elliptical culvert is 3.5 feet tall and 6 feet wide. It is filled with water to a depth of 0.95 feet. Find the width of the stream.
Answer:
[tex]W_s \approx5.3[/tex]
Step-by-step explanation:
From the question we are told that
Height [tex]H=3.5ft[/tex]
Weight [tex]W= 6ft[/tex]
Depth [tex]D=0.95ft[/tex]
Generally the equation for ellipses is given as
[tex]\frac{x^2}{a^2} +\frac{y^2}{b^2} =1[/tex]
Where
[tex]b=H/2\\b=3.5/2\\Therefore\\b=1.75\\a=W/2\\a=6/2\\Therefore\\a=3\\[/tex]
[tex]\frac{x^2}{3^2} +\frac{y^2}{1.75^2} =1[/tex]
Generally to find y in the equation [tex]\frac{x^2}{a^2} +\frac{y^2}{b^2} =1[/tex]
[tex]y=-b+d[/tex]
[tex]y=-1.75+0.95[/tex]
[tex]y=-0.8[/tex]
Therefore
[tex]\frac{x^2}{3^2} +\frac{(0.8)^2}{1.75^2} =1[/tex]
[tex]\frac{x^2}{3^2} =1-\frac{(0.8)^2}{1.75^2}[/tex]
[tex]\frac{x^2}{3^2} =1-0.2089795918[/tex]
[tex]X^2 =3^2(1-0.2089795918)[/tex]
[tex]X^2 =7.119183674[/tex]
[tex]X =\sqrt{7.119183674}[/tex]
[tex]X =2.66817984[/tex]
Therefore the width of the given stream is
[tex]W_s=2.66817984*2[/tex]
[tex]W_s=5.33635968[/tex]
[tex]W_s \approx5.3[/tex]
get brainliest please help
Answer:
2
Step-by-step explanation:
9514 1404 393
Answer:
-3/2
Step-by-step explanation:
The line crosses grid intersections at (-1, 2), (1, -1) and (3, -4). These points are separated by 2 units horizontally and 3 units vertically.
The rise (vertical change) is -3 for each run (horizontal change) of +2, so the ratio rise/run is -3/2. That is the slope of the line: -3/2.
Simplify to create an equivalent expression, Explain why?
5(2p+1)+3(3p-1)
simple math! ( i'll mark you)
Answer:
234
Step-by-step explanation:
Glad to help mark me
Answer:9,540
Step-by-step explanation:
Situe no mesmo sistema de eixos cartesianos os pontos A(1, 3), B(-2, 1), C(0, -4), D(-3, 0), E(-2, -3), F(2, -1), G(3, -4) e H(5/2, ½).
Answer:
A,D,F,E
Step-by-step explanation:
Which expression is equivalent to 15c+20?
Answer:
5 (3 c + 4)
Step-by-step explanation:
We factor out the 5, to get 5(3c+4)
We check by distributing the 5, and we get 15c+20 which is correct!
Hope this helps
The expression equivalent to 15c + 20 is 5(3c + 4).
What are Expressions?Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.
Given expression is 15c + 20.
We have to find an equivalent expression of this using the distributive property.
For three numbers or expressions a, b and c, Distributive property states that,
a (b + c) = ab + ac
In the expression of 15c + 20, write each terms as a multiple of a common factor.
15c = 5 × 3c
20 = 5 × 4
15c + 20 = (5 × 3c) + (5 × 4)
= 5 (3c + 4)
Hence the correct expression which is equivalent to the given expression is 5 (3c + 4).
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