Answer:
x=-1, y=-5 ---> (-1, -5)
Step-by-step explanation:
so you want to plug one equation into the other. so start off by plugging y=−4x−9 into the y value of 4x−y=1-----> 4x-(-4x-9)=1. now subtract and isolate x which ends up being x=-1. now plug the x=-1 into either equation and isolate and solve for your y value which ends up being y=-5. you can check you answer by plugging both the x and y you found into one equation and making sure the answer it gives is true. ;)
The solution for equations y=-4x-9 and y=-4x-9 is x=-1, y=-5.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
The given equations are,
y=-4x-9 (1)
4x-y=1 (2)
From equation (1), substitute the value of y in equation (2)
4x-(-4x-9)=1
8x+9=1
8x=-8
x=-1
Substitute x=-1 in equation (1),
y=-4(-1)-9
y=4-9
y=-5
The value of x is -1 and y is -5
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Find x in this 45°-45°-90° triangle.
x=
Answer:
24
Step-by-step explanation:
This is the same question as before just flipped around
Without looking, Jason draws a tile from the first bag and then a tile from the second bag. What is the probability of Jason drawing the tile numbered 2 from the first bag and the tile numbered 3 from the second bag? Wh
Complete question:
Jason has two bags with 6 tiles each. The tiles in each bag are shown below:
1 2 3 4 5 6
Without looking, Jason draws a tile from the first bag and then a tile from the second bag. What is the probability of Jason drawing the tile numbered 2 from the first bag and the tile numbered three from the second bag?
Answer: 1/36
Step-by-step explanation:
Number of tiles in each bag = 6
Probability of drawing tile numbered 2 from the first bag and the tile numbered 3 from the second
Probability of drawing number 2 from first bag :
P(numbered 2) = (required outcome / possible outcome)
P(numbered 2) = 1/6
Probability of drawing number 2 from first bag :
P(numbered 3) = 1/6
Since they are independent events :
P(drawing 2 from bag one and 3 from bag 2) :
1/6 × 1/6 = 1/36
PLEASE HELP !!! i will literally give you all my points and brainliest im BEGGING
X =
y =
m ∠ H =
m ∠ G =
Answer:
x=53
y=26
H=106
G=93
Step-by-step explanation:
By the inscribed quadrilateral conjecture:
[tex]2x+(x+21)=180\\(3y+9)+(4y-11)=180\\3x+21=180\\3x=159\\x=53\\7y-2=180\\7y=182\\y=26\\H=2(53)=106\\G=(4(26)-11)=104-11=93[/tex]
Hope this helps!
Answer:
x=53
y=26
H=106
G=93
Step-by-step explanation:
im not really good with this stuff i tryed and hope this helps
What is the square root of 300
Answer:
the square root of 300 is 17. 32
Step-by-step explanation:
[tex] \sqrt{300} =17.32 \times 17.32[/tex]
Answer:
17.32
Step-by-step explanation:
step by step
(algebra)Can you please help and show your work, solve for X.
Solve for x.
41. (x + a)/b + b = a
1. Subtract b.
(x + a)/b = a - b
2. Multiply by b.
x + a = ab - b^2
3. Subtract a.
x = ab - b^2 -a
42. bx + a = dx + c
1. Subtract a.
bx = dx + c - a
2. Subtract dx.
bx - dx = c - a
3. Factor x out.
x(b -d) = c - a
4. Divide by (b-d).
x = (c-a)/(b-d)
43. cx - b = ax + d
1. Add b.
cx = ax + d + b
2. Subtract ax.
cx - ax = d + b
3. Factor x out.
x(c -a) = d + b
4. Divide by (c-a).
x = (d +b)/c-a).
44. a(x -3) + 8 = b(x - 1)
1. Distribute everything.
ax - 3x + 8 = bx - b
2. Subtract 8.
ax - 3a = bx - b -8
3. Subtract bx.
ax - bx - 3a = -b - 8
4. Factor x out.
x ( a - b) - 3a = -b - 8
5. Add 3a.
x ( a - b) = -b - 8 + 3a
6. Divide by (a-b).
x = (-b - 8 + 3a) / (a - b)
45. c ( x + 2) - 5 = b ( x -3)
1. Distribute everything.
cx + 2c -5 = bx - 3b
2. Add 5.
cx + 2c = bx - 3b + 5
3. Subtract bx.
cx - bx + 2c = -3b + 5
4. Factor x out.
x ( c - b ) + 2c = -3b + 5
5. Subtract 2c.
x ( c - b) = -3b + 5 - 2c
6. Divide by ( c - b).
x = (-3b + 5 - 2c)/(c-b)
46. a (3tx - 2b) = c (dx -2)
1. Distribute everything
3txa - 2ba = cdx - 2c
2. Subtract cdx.
3txa - cdx - 2ba = -2c
3. Add 2ba.
3txa - cdx = 2ba - 2c
4. Factor x out.
x ( 3ta - cd) = 2ba - 2c
5. Divide by (3ta - cd).
x = (2ba - 2c)/(3ta - cd)
47. b ( 5px - 3c) = a (qx -4)
1. Distribute everything.
5bpx - 3bc = apx - 4a
2. Subtract apx.
5bpx - apx - 3bc = -4a
3. Add 3bc.
5bpx - apx = -4a + 3bc
4. Factor x out.
x ( 5bp - ap ) = -4a + 3bc
5. Divide by (5bp - ap).
x = (-4a + 3bc)/(5bp - ap)
48. [a/b(2x - 12)]= c/d
1. Multiply b first.
a ( 2x - 12) = c/d
2. Multiply by d.
ad(2x - 12) = cb
3. Distribute ad.
2adx - 12ad = cb
4. Add 12ad.
2adx = cb + 12ad
5. Divide by 2 ad.
x = (cb + 12ad)/2ad
Please help! Correct answers only please!
You spin the spinner twice.
What is the probability of landing on an odd number and then landing on an even number?
Simplify your answer and write it as a fraction or whole number.
Answer:
1/4
Step-by-step explanation:
Since on this spinner, there are 2 odd numbers, 2 even numbers, and 4 numbers in total, for the both spins there is a 1/2 probability that you land on the desired outcome. 1/2*1/2=1/4. Hope this helps!
Help me with question 20 I will mark brainliest
Answer:
142.9
Step-by-step explanation:
litres of milk
30/100=x/125
10x=375
x=37.5
14% of milk
14/100=x/125+y
1750+14y=100x
1750=100x–14y
1750=100(37.5)–14y
1750=3750–14y
y=2000/14=142.9
If f(x) = 5x + 2x and g(x) = 3x - 6, find (f+g)(x).
O A. 5X + x-6
O B. 5x – X+6
O C. 10x- 6
O D. 5* + 5x – 6
Answer:
10x -6
Step-by-step explanation:
f(x) = 5x + 2x = 7x
g(x) = 3x - 6
f(x) + g(x) = 7x+ 3x-6
= 10x -6
is the square root of 1,815 rational?
Answer:
It is not
Step-by-step explanation:
Explanation:
Using a calculator, we find that
sqrt(1815) = 42.6028168082816
which is not a whole number. The decimal numbers go on forever without any known pattern. Therefore, this number is irrational. This means it is not rational.
Oliver's monthly budget is $2,000. How much money does he save each month?
A $200
B $500
C $600
D $700
Answer:
$500 would be better, for 4 months only...
The slope of any line perpendicular to , where A (0, -3) and B (4, 9) are two points on the line, is m =
-3
-1/3
3
Answer:
The answer is b
Step-by-step explanation:
6x^2 - 19x + 10
Factor
Answer:
(2x-5)(3x-2)
Step-by-step explanation:
1)When factoring quadratic equations in for ax²+bx+c you need to separate the b term in a way that the two addends you separate it by should equal a•c. Just do trial and error. In this case you should get -4 and -15. Your separated equation should be:
6x²-4x-15x+10
2)now factor out a common factor from the first two terms and one from the last two terms you should have:
2x(3x-2)-5(3x-2)
3)finally rewrite this equation into two separate factors and you have your answer.
If 560 mg is 80% of a dose of medicine, how much is a full dose?
Answer:
PLEASE GIVE BRAINLIEST AND THANKS
700mg
Step-by-step explanation:
560 divided by 80= 7
7 x 100=700mg
The length of a rectangle is 2cm, and the width is 1 cm. Find the length of a diagonal of this rectangle.
A. √3cm
B. √5cm
C. 3 cm
D. 25 cm
Answer:
Ans 2
Step by step explanation :
2 X 1 = 2
Answer:
this is merely the Pythagorean Theorem. so we would do (2^2+1^2)^.5 = 2.236 = square root of 5 = answer B!!!
Solve the following, and express your answer in scientific notation.
(7.66 x 10^4) - (5.4 x 10^4)
Answer: 2.26 * 10^4
Step-by-step explanation:
A triangle has side lengths measuring 20 cm, 5 cm, and n cm. Which describes the possible values of n?
O 5 < n < 15
O 5 < n < 20
O 15 < n < 20
0 15 < n < 25
Intro
Done
Answer:
the correct answer is 15<n<25
Step-by-step explanation:
tick the calculation that would increase 275 by 10%
275 + 10
110/100 x 275
10/275 x 10
275 + 27.5
Answer:
The calculation that would increase 275 by 10%:
275 x ( 1 + 10%) = 275 x (1 + 10/100) = 275 x 110/100 = 302.5
Hope this helps!
:)
HELP ME PLZ no guessing
Answer:
29/3
Step-by-step explanation:
C:
Answer:
7 miles per hour
Step-by-step explanation:
Speed = Distance / Time
If the distance was 15.75 miles, and the time was 2.25 hours, then doing 15.75 / 2.25 gets you 7 miles per hour.
You can check this by doing 7 x 2.25 which would get you 15.75
(+34)+(-48)+(-32)+(+26) =???
Answer:
-20
Step-by-step explanation:
Answer:
[tex] - 20[/tex]
Step-by-step explanation:
[tex] (+ 34) + ( - 48) + ( - 32) + ( +26) \\ 34 - 48 - 32 + 26 \\ = (- 20) [/tex]
A person drives a car 55 miles per hour for 8 hours.
Answer:
They drive 6.875 miles per hour
Hope this helps :)
A correlation of r=-. 17 indicates strong, negative correlation
Answer:
True or false
Step-by-step explanation:
Is this a true or false, and can you upload an image
5.02×10^2 in standard form
Answer:
5020000000000.
Step-by-step explanation:
5.02×10^2 is in scientific notation so we must convert it to standard form getting that answer.
Ms. Luna is waterproofing the top of a rectangular wood deck. The width of the deck is 3 m less that the length. The length is 8m. What is the area to be waterproofed?
Answer:
40 m
Step-by-step explanation:
First we have to find the width. the width is 3 less than the length, which is 8... so the width is 5. Area is found by multiplyign length times width to get 40 m.
If the width of the deck is 3 m less that the length. The length is 8m. then the area to be waterproofed is 40 m²
What is Rectangle?A rectangle is a quadrilateral with four right angles
The area of Rectangle is length times of width.
Given that Ms. Luna is waterproofing the top of a rectangular wood deck.
The width of the deck is 3 m less that the length.
Width=Length-3
Length=8
Area of rectangle=Length×Width
=Length×(Length-3)
=8×(8-3)
=8×5
=40 m²
Hence, If the width of the deck is 3 m less that the length. The length is 8m. then the area to be waterproofed is 40 m²
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PLEASE HELP ME!!!!! This is important
Answer: the answer is 80 cubic inches.
Step-by-step explanation:
To find the volume of a cube, you have to multiply length, width, and height. Therefore that is 4x5x4= 80 cubic inches
6- en la clase de repostería, inés y liz prepararon una torta de naranja. para ello, utiliza 1/2 litro de leche y 1/3 de jugo de naranja¿que cantidad de líquido utilizan? ¿cuantos litros de leche más que jugo de naranja echan?
Answer:
El total de líquido utilizado es [tex]\frac{5}{6} de litro[/tex]. Se echa [tex]\frac{1}{6}[/tex] de litro más de leche que de jugo
Step-by-step explanation:
Para saber la cantidad total de líquido, basta con sumar las cantidades de leche y de jugo de naranja. Vamos a asumir que usa 1/3 de litro de jugo de naranja.
En este caso el total de líquido es 1/2 litro + 1/3 litro. Dado que estas fracciones tienen distinta denominador, debemos sumarlas de la siguiente manera
[tex] \frac{1}{2}+\frac{1}{3} = \frac{1\cdot 3 + 2\cdot 1}{2\cdot 3} = \frac{5}{6}[/tex]
Para calcular la cantidad extra de leche de más que la cantidad de jugo, restamos estos números. Es decir
[tex] \frac{1}{2}-\frac{1}{3} = \frac{1\cdot 3 - 2\cdot 1 }{2\cdot 3} = \frac{1}{6}[/tex]
Es decir, que echamos [tex]\frac{1}{6}[/tex] de litro más de leche que de jugo.
Out of 1,000 students, 80 were asked by random sampling what color they would prefer for their first car. Their responses are shown in the table below.
Answer:
175
Step-by-step explanation:
To find a proportion, you need to put both parts over the total. You would put the part of silver (14) over the total (80) and the part you are trying to find (X) over the total number of students (1,000). Then you cross multiply 14 x 1,000 and divide by 80 giving you 175 silver cars.
What is it called when the gravities of the Sun and Moon combine twice a month, to produce an extra-high tidal bulge and extra-low tidal dip helpppppppppp ppppplleeeeasssssssee i will mark brainlest
Answer:
spring tides
Step-by-step explanation:
spring tides occur twice a month to produce an extra-high tidal bulge and extra-low tidal dip
At about 9:00 PM every night, flights from Chicago, Miami, and Denver arrive at the local airport in a random order. What is the probability that the Chicago flight will arrive first on any night? Write your answer as a fraction in simplest form
Answer:
The answer is 1/3
Step-by-step explanation:
Since there are 3 planes that arrive in a random order, there is a 1 in 3 chance that the plane from Chicago will arrive first. Hope this helps!
Katherine is requesting a large print job from the printing office. She has a 51-page document she wants printed double-sided and stapled. She needs 3,550 copies.How many pieces of paper are required to complete this request?
Answer:
181,050 pieces of paper.
Step-by-step explanation:
If she needs 3,550 copies of a 51 page document, you can easily solve this problem by multiplying the amount of copies needed by pages per copy. 3,550 x 51 is 181,050.
Justin's rice ball recipe uses 100 grams of rice to make 1 rice ball. Justin has 700 grams of rice.
Answer:
Yup he can make 7 rice balls
Step-by-step explanation:
If he has 700 grams of rice and he only needs 100 grams welp that's 700/100
first you can take the zeros off so it turns into 7/1 and anything devided by it's self is itsself
So 7/1 is 7
Justin can make 7 rice balls if he has 700 grams of rice because he can make 1 rice ball using 100 grams.
What is the ratio?It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.
We have:
Justin's rice ball recipe uses 100 grams of rice to make 1 rice ball.
The ratio of the quantity of the rice to rice ball:
100:1
Multiply the above ratio by 7
700:7
Thus, Justin can make 7 rice balls if he has 700 grams of rice because he can make 1 rice ball using 100 grams.
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