PLEASE HELP
Find the solution to the system of equations.
You can use the interactive graph below to find the solution.
x= ____
y= ____
Answers
Step: Solve
−
3
x
−
9
y
=
18
for x:
−
3
x
−
9
y
=
18
−
3
x
−
9
y
+
9
y
=
18
+
9
y
(Add 9y to both sides)
−
3
x
=
9
y
+
18
−
3
x
−
3
=
9
y
+
18
−
3
(Divide both sides by -3)
x
=
−
3
y
−
6
Step: Substitute
−
3
y
−
6
for
x
in
4
x
+
3
y
=
12
:
4
x
+
3
y
=
12
4
(
−
3
y
−
6
)
+
3
y
=
12
−
9
y
−
24
=
12
(Simplify both sides of the equation)
−
9
y
−
24
+
24
=
12
+
24
(Add 24 to both sides)
−
9
y
=
36
−
9
y
−
9
=
36
−
9
(Divide both sides by -9)
y
=
−
4
Step: Substitute
−
4
for
y
in
x
=
−
3
y
−
6
:
x
=
−
3
y
−
6
x
=
(
−
3
)
(
−
4
)
−
6
x
=
6
(Simplify both sides of the equation)
Answer:
x
=
6
and
y
=
−
4
Related Questions
A fine fabric was selling for $10.50 per half yard. Joni bought 2 1/3 yards. How much did he spend? Brainliest for correct answer. (ANSWER ISN'T 45.5)
Answers
Answer:
45.5
Step-by-step explanation:
First you would find 1/3 third of 10.50 and it is 3.5, you would then do 10.50 x 4 since it said 10.50 per half a yard, so you would do times 4 and you would get 42, you would then add 42 + 3.5 which equals 45.5.
Pls helpppppp for brainly
Answers
Answer:
[tex]\frac{6}{8}[/tex] or [tex]\frac{3}{4}[/tex]
Step-by-step explanation:
Convert the mixed numbers into improper fractions.
[tex]2\frac{3}{8}-1\frac{5}{8}=\frac{19}{8}-\frac{13}{8}[/tex]
Since the two fractions have the same denominator, just subtract the numerators.
[tex]\frac{19}{8}-\frac{13}{8}=\frac{6}{8}[/tex]
If required, rewrite the fraction in simplest form.
[tex]\frac{6}{8}=\frac{3}{4}[/tex]
Wich of the numbers below are factors of 20? Select that apply.
A)3
B)4
C)5
D)10
E)16
Answers
4, 5, And 10
4x5= 20
5x4= 20
10x2= 20
please help HEYMLMUM
Answers
Answer:
I am sorry if this is incorrect I am not 100% sure but the answer might be A
Step-by-step explanation:
(5-2)×2+[-4+(-7)]÷(-2+4)
Answers
The answer is
0.5Subtract 2 from 5 to get 3.
3x2=6
subtract 7 from -4 to get -11
Add -2 and 4 to get 2.
Fraction
2 /−11can be rewritten as −
2 /11by extracting the negative sign.
Convert 6 to fraction 12/2
Since the 2 fractions have the same denominator, subtract them by subtracting their numerators.
1/2= 0.5 (decimal form)
Martin says that f(x)=2(4)^x starts at 4 and has a constant ratio of 2. What error did Martin make? Explain.
Answers
Answer:
A general exponential equation is written as:
f(x) = A*(r)^x
Where:
A is the initial value, this is the value that the function takes when x = 0.
r is the rate of growth
x is the variable.
In this case, the function is:
f(x) = 2*(4)^x
The initial value is:
f(0) = 2*(4)^0 = 2*1 = 2
The initial value is 2.
And the rate of growth is 4.
So Martin seems to mixed these two values (he said initial value = 4, and rate = 2, which is the opposite of what we found)
Is −7 a solution of −9x > 45?
Answers
Answer:
Yeah
[tex] - 9( - 7) = 63 \\ 63 > 45 \\ thus \: - 7 \: can \: be \: one \: of \: the \: solutions[/tex]
Plss help me you’ll get 100 points!
Answers
Answer:
Step-by-step explanation:
x=21
can i get brainliest plz
2x21=42
42-5=37
yo i need help please no links i just need the answer to pass my exit ticket please i’ll give u a brainliest
Answers
Answer:
approximately 15 ice cones
Step-by-step explanation:
volume of cylinder is V=πr2h
volume of cone is V=πr2h
3
A recipe for pie dough calls for a ratio of butter to flour of 4/5 : 3 1/3 . If you plan to use 6 2/3 cups of flour, how much butter should you use to keep the same ratio?
Answers
Answer:
1 3/5
Step-by-step explanation:
to determine the answer, take the following steps :
determine how much larger the amount of flour you intend to use is more than that indicated in the recipeMultiply the answer gotten in the above step by the amount of flower indicated in the recipe6 2/3 ÷ 3 1/3
20/3 x 3/10 = 2
2 x 4/5 = 8/5 = 1 3/5
Use a net to find the surface Area of the square pyramid The height of the pyramid is 9 yes and the base sides are all 2.5 yrds and its a square as a base
Answers
Answer:
[tex]Area = 51.68yd^2[/tex]
Step-by-step explanation:
Given
[tex]h = 9yd[/tex] -- height
[tex]a = 2.5yd[/tex] --- base sides
Required
Determine the surface area
The net is not given. So, I will solve directly.
The surface area is calculated as:
[tex]Area = a^2 + 2a\sqrt{\frac{a^2}{4} + h^2}[/tex]
So, we have:
[tex]Area = 2.5^2 + 2*2.5\sqrt{\frac{2.5^2}{4} + 9^2}[/tex]
[tex]Area = 6.25 + 5\sqrt{\frac{6.25}{4} + 81}[/tex]
[tex]Area = 6.25 + 5\sqrt{1.5625 + 81}[/tex]
[tex]Area = 6.25 + 5\sqrt{82.5625}[/tex]
[tex]Area = 6.25 + 5* 9.086[/tex]
[tex]Area = 51.68yd^2[/tex]
PLEASE HELP ME AND MAY GOD BLESS U
Answers
Answer:
68mm
Step-by-step explanation:
Answer:
63.585 mm2 is the area
28.26 is the circumference.
Hope this helps!
Please help me out with this problem
Answers
Answer:
A 4/3
Step-by-step explanation:
to long to explain but its right
i need help with this no link pls
Answers
Answer:
1. x = 36 equation is x + 2x + 9 = 117, then solve for x
2. x = 50 equation is x + x + 12 = 112, then solve for x
Step-by-step explanation:
Helppppp pleaseeeee
Answers
Answer:
-1
Step-by-step explanation:
Nkechi wants to use a one-sample z interval to estimate what proportion of candies in a bag are red. She takes a random sample of 24 of the 80 total candies and finds that 18 of the candies in the sample are red. Which conditions for constructing this confidence interval did Nkechi's sample meet? Choose all answers that apply
Answers
Answer: The data is a random sample from the population of interest.
Step-by-step explanation: The condition is met since she randomly selected the sample from the population of interest.
The data is a random sample from the population of interests.(Option A), and individual observations can be considered independent.(Option C)
What are the conditions for valid inference about one proportion?Random sample: The sample should be taken randomly.Normal distribution of proportion: The sampling distribution of the proportion we're taking about should be normally distributed.Independent observations: Each of the observations must be independent.The missing options are:
A. The data is a random sample from the population of interests.
B The observed counts of successes and failures are both sufficiently large.
C. Individual observations can be considered independent.
For this case, we're given that the sample was random.
Sample size is 24,which is not sufficiently large (usually we take > 30 as sufficiently large size).
Also, each candle was independent for being red colored.
Thus, the data is a random sample from the population of interests.(Option A), and individual observations can be considered independent.(Option C)
Learn more about valid inference about proportion here:
https://brainly.com/question/3663642
What is the perimeter of the rectangle whose vertices are at (6, 3), (−6, 3), (−6, −1), and (6, −1)?
Answers
Given:
The vertices of a rectangle are (6, 3), (−6, 3), (−6, −1), and (6, −1).
To find:
The perimeter of the rectangle.
Solution:
Distance formula:
[tex]d=\sqrt{(x_2-x_1)^2-(y_2-y_1)^2}[/tex]
Let the vertices of a rectangle are A(6, 3), B(−6, 3), C(−6, −1), and D(6, −1).
Using the distance formula, we get
[tex]AB=\sqrt{(-6-6)^2-(3-3)^2}[/tex]
[tex]AB=\sqrt{(-12)^2-(0)^2}[/tex]
[tex]AB=\sqrt{144}[/tex]
[tex]AB=12[/tex]
Similarly,
[tex]BC=\sqrt{\left(-6-\left(-6\right)\right)^2+\left(-1-3\right)^2}=4[/tex]
[tex]CD=\sqrt{\left(6-\left(-6\right)\right)^2+\left(-1-\left(-1\right)\right)^2}=12[/tex]
[tex]AD\sqrt{\left(6-6\right)^2+\left(-1-3\right)^2}=4[/tex]
Now, the perimeter of the rectangle is:
[tex]Perimeter=AB+BC+CD+AD[/tex]
[tex]Perimeter=12+4+12+4[/tex]
[tex]Perimeter=32[/tex]
Therefore, the perimeter of the rectangle is 32 units.
Write and solve your own multi-step equation that has variables on both sides and at least one fraction.
Example : 5x + 5 + 4x = 4 - 3x + 6 (but dont do this one, do something similar to it and solve it please :) )
Answers
Your Answer for 5x+5+4x=4-3x+6: x=5/12
Step-by-step explanation: Hope this help :D
Find the area of the parallelogram.
PLEASE HELP!!
Answers
please help with this problem
Answers
Answer:
9
Step-by-step explanation:
constant of proportionality in this problem is the cost per pant
How much wood do you need to build a frame around a picture that is 8 inches tall and 10 inches wide?
Answers
Answer:
36 inches of wood
Step-by-step explanation:
8+8+10+10= 36
Please write eight facts about: The Flow of Energy in a Food Chain.
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Answers
Answer:
Always linear...
Decreases with successive trophic level
Answer:
Food chains are very important for the survival of most species. When only one element is removed from the food chain it can result in extinction of a species in some cases.An example of a simple food chain would be: A plant grows using the sun's energy and nutrients from the soil. A rabbit eats the plant. A fox eats the rabbit. The fox dies and decomposes into organisms that feed the soil.A producer, which is able to produce its own food, is also called an autotroph. Every species in the ecosystem relies on producers for their existence.A producer is able to covert inorganic compounds into organic compounds. Without this process life could not exist.A producer can use either solar energy or chemical energy to convert organisms into usable compounds.Because the sun is necessary for photosynthesis, life could not exist if the sun disappeared.Consumers can be carnivores (meat eater only), herbivore (plant eater only), omnivore (eats animals and plants), and a scavenger (eats dead animals).Examples of omnivores (plant and animal eaters) are bears (which eat fish, insects, honey, moose, and grass), turtles (which eat crayfish, earthworms, lettuce, and algae), squirrels (which eat seeds, fruit, eggs, and insects), and monkeys (which eat fruit, leaves, and frogs).Examples of carnivores (animal eaters) include hawks, snakes, foxes, and spiders.Examples of herbivores (plant eaters) include rabbits, moose, cows, groundhogs, and grasshoppers.Decomposers, which feed on dead animals, break down the organic compounds into simple nutrients that are returned to the soil. These are the simple nutrients that plants require to create organic compounds.It is estimated that there are more than 100,000 different decomposers in existence.Al-Jahiz was a 9th century scientist who is responsible for introducing the concept of food chains.The food web, which is a concept that expands on the food chain, was introduced in 1927 by Charles Elton.Food chains can be short, or they can be long, depending on how many consumers can be eaten before one dies and begins to decompose.If a food chain were to continue too long, the energy would become less and less and it would not be very valuable to the animal at the end.Step-by-step explanation:
How many known elements exist? PLZZZZZZ HELP PLZZZZZZ
A. about 100
B. fewer than 50
C. exactly 75
D. 1,000
When two or more atoms link together they are called ______.
A. a shell
B. an electron
C. a molecule
D. a cluster
Mass is _____.
A. the length of an atom’s nucleus
B. the center of a compound
C. another name for mixtures that go together
D. the amount of matter in an object
Answers
Answer:
1. A (there 118)
2. C
3. D
h(x) = √x-10 Determine for each x-value whether it is in the domain of h or not.
Answers
Answer:
0 is not in domain
5 is not in domain
10 is in domain
Step-by-step explanation:
10 is in domain because inputting 10 into the function gives an output of 0
0 is not in th domain because 0 gives us the square root of a negative number, and the quare of a negative number isnt a real number
5 is not in the domain for the same reason
This table shows Jill's math quiz scores. What is the minimum score she needs on her next
quiz to have a mean of at least 92?
Jill's Math Quiz Scores
Math Quiz
Week
Score
1
92
2
96
94
88
- م ه ه
90
92
88
94
Answers
Answer:
answer is 92
Step-by-step explanation:
iReady Math Test Diagnostic
whoever gets this corrects gets brainliest!!!
Answers
Answer:
d
Step-by-step explanation:
the submarine is below water so that's considered a negative and the number in the equation is negative 3. and if you keep multiplying a positive by a negative the number stays negative and thats the submarine getting deeper and deeper into the ocean if that makes sense.
The others represent positive change
Just some points have fun
Answers
Answer:
thx for the points
Step-by-step explanation:
Answer:
Step-by-step explanation:
Yes it's fun
Help me plzzz I need help
Answers
Answer:
It shows the distance travelled, in miles, by the e towboat after 5•15 hours
WILL GIVE BRAINLIEST Help needed asap
Answers
Answer:
3rd option: The number of protons and neutrons
Step-by-step explanation:
Protons are positively charged
Neutrons are negatively charged
You can easily remember this by the P and N
For an object to be "neutral", the protons and neutrons have to be equal. If they are not equal it will be positively charged of negatively charged.
You invite your best friend Sheila out for a picnic on Thursday. Sheila tells you "If it rains, there is a 20% probability
that I will come, but if it's sunny, there is an 80% probability that I will come." You check the weather and see that
there is a 40% chance of rain for that day. What is the overall probability that Sheila will attend your picnic? Explain
how you found your answer.
Answers
Answer: 56%
Probably that it will rain and she goes + probably that it will be sunny and she goes
= 0.4 * 0.2 + 0.6*0.8
= 0.08 + 0.48
= 0.56
56% chance