Answer:
Step-by-step explanation:
To solve this, what you first should do is make one of the variables equal, that way you can eliminate that variable and only have to solve one of them. Let's eliminate y, since that one is easier. As you can see, the y in the first equation is 3 times less than the y in the second, so you would multiply everything the first equation by 3 to help eliminate y. After doing this, you would have -6x + 3y = 48, with which you will add to the second equation, which leaves you with -10x = 50. Since you have a negative x, multiplying both sides by a negative sign will make it much easier to find x's value, which gives you -5 as x's value, so x = -5. Now keep this aside, because it will help you solve.
Now that you have the value of x (-5), you should replace one of the equations with x's value, so let's just do this to the second equation. Now you have 20 - 3y = 2. Here, you should take the 20 to the right side to isolate 3y from the numbers, which leaves you with -3y = -18. This gives tells you, after simplifying, that y = 6.
And since the order pair is always (x,y), your answer would be (-5, 6). STILL EDITING ANSWER!
Write $1.50 to $12.00 as a ratio in fraction form in lowest terms.
Answer:
1/8
Step-by-step explanation:
Lcd of 4/5 , c/7 where c=3
Answer:
35
Step-by-step explanation:
By noon, the temperature in Juneau had risen by 16ºF.
What was the temperature there at noon?
Answer:
-17 degrees F
Step-by-step explanation:
Assuming that the temperature in the chart is the temperature before noon, all we need to do to find the temperature at noon is to add 16 degrees Fahrenheit to the table value (since "risen by 16 degrees F" means to increase by 16 degrees, aka to add 16 degrees).
So,
-33 + 16 = -17
Determine if the relationship is proportional
7/10 = 21/28
Answer:
No it isn't proportional because
7/10 = 21/28 is wrong
21/3=7 so for it to be proportional you need to multiply three
However
10 * 3 does NOT = 28 since it equals 30
7/10 can be equivalent to 14/20 which is multiplying both numerator and denominator by 2
OR...
21/28 can be equivalent to 42/56 which is multiplying both numerator and denominator by 2
Hope this helps!
Have a nice day :D
Please give brainliest
PLEASE HELP! Economics
Answer:
B
Step-by-step explanation:
hope it helps, and im finding another question
Answer:
B. a German citizen
Step-by-step explanation:
I think I'm not sure.
Question 5 - Last night 20 mm of rain fell in 4 h. If it continues raining at the same rate, how
long will it take for 45 cm of rain to fall?
Answer:
Step-by-step explanation:
45 divided by two
June, Gavyn and Alex share some sweets in the ratio 5:3:2. June gets 42 more sweets than Alex. How many sweets does Gavyn get?
Answer:
42 sweets
Step-by-step explanation:
The ratios are 5 : 3 : 2 = 5x : 3x : 2x (x is a multiplier )
June gets 42 more sweets than Alex , then
5x = 2x + 42 ( subtract 2x from both sides )
3x = 42 ( divide both sides by 3 )
x = 14
Gavyn = 3x = 3 × 14 = 42 sweets
Answer:
42 sweets.
Step-by-step explanation:
First work out the number of parts:
5 + 3 + 2 = 10.
So June gets 5/10 = 1/2 of the sweets.
Alex gets 2/10 = 1/5.
Gavyn gets 3/10.
If the total number of sweets was x, then:
1/2 x - 1/5 x = 42
5/10x - 2/10 x = 42
3/10 x = 42
x = 42*10/3 = 140.
So Gavyn has 3/10 * 140 = 42.
The town of Lantana needs $14,000 for a new playground Lantana elementary school raised 5358, Lantana Middle School raised $2,834 and Lantana High school raised $4132. about how much more do they need to raise? Choose the best estimate.
1. 500
2. 2,000
3. 3000
4. they already raised enough money.
Answer: The answer is actually 1,676. But you can estimate it to 2,000. so the town of Lantana would have about 2,000 dollasrs left to raise to reach there goal.
Step-by-step explanation:
You would first make sure you add all the number like 5,358+2,834+4,132. And once you get you answer you subtract 14,000 from the number you got!
I really hope that helps.
Dean was flying his drone at an elevation of 307 feet. A strong gust of wind then caused it to drop 59 feet.
What is the elevation of the drone now?
Answer:
The elevation is 248 feet.
Step-by-step explanation:
You subtract 307-59.
Give the digits in the hundred thousands place and the ten thousands place.
746,089
Answer:
Hundred thousands - 7
Ten Thousands- 4
Step-by-step explanation:
5
x
−
5
y
=
−
15
3
x
−
2
y
=
−
7
[tex]{\huge{\boxed{\mathbb{QUESTION}}[/tex]
[tex]\begin{bmatrix}5x-5y=-15\\ 3x-2y=-7\end{bmatrix}[/tex]
[tex]substitute\:x\:for\:-3+y[/tex]
[tex]\begin{bmatrix}3\left(-3+y\right)-2y=-7\end{bmatrix}[/tex]
[tex]{\huge{\boxed{\mathbb{SIMPLIFY}}[/tex]
[tex]\begin{bmatrix}-9+y=-7\end{bmatrix}[/tex]
add 9 to both sides
[tex]y=2[/tex]
Remember [tex]x=-3+y[/tex]
instead of [tex]y[/tex] we will put [tex]2[/tex]
[tex]x=-3+2\\x=-1[/tex]
[tex]{\huge{\boxed{\mathbb{ANSWER}}[/tex]
[tex]y=2[/tex] [tex]x=-1[/tex]Answer:
( - 1 , 2 )
Step-by-step explanation:
5x - 5y = - 15
3x - 2y = - 7
[tex]\left \{ {{5x-5y=-15} \atop {3x-2y=-7}} \right.[/tex] ⇔ [tex]\left \{ {{x-y=-3} \atop {3x-2y=-7}} \right.[/tex] ⇔ [tex]\left \{ {{-3x+3y=9} \atop {3x-2y=-7}} \right.[/tex]
(1) + (2)
y = 2 -------> (1)
x = - 1
( - 1 , 2 )
For a project in his Geometry class, Ryan uses a mirror on the ground to measure the height of his school’s football goalpost. He walks a distance of 12.15 meters from the goalpost, then places a mirror on flat on the ground, marked with an X at the center. He then walks 3.4 more meters past the mirror, so that when he turns around and looks down at the mirror, he can see the top of the goalpost clearly marked in the X. His partner measures the distance from his eyes to the ground to be 1.35 meters. How tall is the goalpost? Round your answer to the nearest hundredth of a meter.
9514 1404 393
Answer:
4.82 m
Step-by-step explanation:
The mirror reflects light at the same angle the light hits it, so the triangles formed by the line of sight, the ground, and the objects involved are similar. This means corresponding lengths are proportional.
height/mirror distance = T/12.15 = 1.35/3.4
Multiplying by 12.15, we find the top of the goalpost to have a height of ...
T = 12.15(1.35/3.4) ≈ 4.82 . . . meters
The goalpost is about 4.82 meters high.
Someone please help me
Answer:
,
Step-by-step explanation:
all work shown and pictured
Evaluate N2 + 2N + 1 for N = 5.
51
36
21
Answer:
36
Step-by-step explanation:
N^2 + 2N + 1
Since we are given N = 5, we just substitute N for 5
(5)^2 + 2(5) + 1
25 + 10 + 1
36
Answer: 36
Step-by-step explanation:
5*5 + 5*2 +1 = 25 + 10 + 1 = 36
Malachi took cans to the recycling plant and put them into the can-crusher one at a time. After he had already crushed some of the cans, he started recording the number of cans he crushed per minute. This table shows how many cans Malachi put in the can-crusher at different times.
Time (min): 2 , 4 , 6 , 8
Number of cans crushed: 4 , 9 , 64 , 79 , 94
What is the equation that represents Malachi’s situation, where x represents the time and y represents the number of cans crushed?
Answer:
it is 793
Step-by-step explanation:
Angles 1 and 2 are coresponding angles angle 1 is 3x+15 angle 2 is 4x-5 degrees.
what is the value of x
Answer:
10
Step-by-step explanation:
3x+15+4x-5=180
7x+10=180
7x=170
x=10
The variable r is directly proportional to the square of t, and r = 144 when t = 72.
Write the equation that expresses the relationship between the variables. (Let k represent the variation constant.)
Using the given data, solve for the variation constant k.
Answer:
k=0.023
Step-by-step explanation:
[tex]r \alpha {t }^{2} \\ r = k {t}^{2} \\ 144 = k \times {72 }^{2} \\ k = \frac{144}{ {72 }^{2} } \\ k = 0.023 \\ the \: eqn \: is \: therefore \\ r = 0.023 \times {t}^{2} [/tex]
The equation that expresses the relationship between the variables is r=kt and the variation constant k=2.
What is a proportional relationship?Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is known as the "constant of proportionality".
Given that, the variable r is directly proportional to the square of t
Now, r∝t
r=kt
Here, r =144 when t =72
Thus, 144=k×72
k=2
Therefore, the equation that expresses the relationship between the variables is r=kt and the variation constant k=2.
To learn more about the proportional relationship visit:
brainly.com/question/12917806.
#SPJ2
What equals 10³ I need to know
Answer:
1,000
Step-by-step explanation:
10 x 10 x 10 = 1,000
1000
Step-by-step explanation:
10³
=10×10×10
1000
Multiply and collect like terms: (7x2+8x+2)(−2x2−4x−5)
Question 6: 17 pts
Identify the parent function for the function g(x) = x2 - 4 based on its function rule.
Then graph g and identify the transformation of the parent function that it
represents.
linear; translation up 4 units
quadratic; translation up 4 units
quadratic; translation down 4 units
O
linear; translation down 4 units
Answer:
Parent function is g(x) = x² a quadratic
Step-by-step explanation:
quadratic; translation down 4 units
-4 means the vertex will move down 4
The transformation of the parent function that represents translation down 4 units. Therefore, quadratic; translation down 4 units.
The given function is g(x)=x²-4.
What is the parent function?A parent function is the simplest function that still satisfies the definition of a certain type of function. For example, when we think of the linear functions which make up a family of functions, the parent function would be y = x. This is the simplest linear function.
Quadratic; translation down 4 units:
The parent function of the quadratic family is f(x) = x2. A transformation of the graph of the parent function is represented by the function g(x) = a(x − h)² + k, where a ≠ 0.
The transformation of the parent function that represents translation down 4 units. Therefore, quadratic; translation down 4 units.
To learn more about the parent function visit:
https://brainly.com/question/17939507.
#SPJ2
Please answer this question no links please
Answer:
first I need to know what your question is to be able to answer this question sorry
Answer:
Ummm what is the question?
Step-by-step explanation:
Please help rn!!!!!!!!
Answer:
The correct answer is H: c=2A/h-b
Step-by-step explanation:
A=1/2(b+c)h
Multiply both sides by two: 2A=(b+c)h
Divide both sides by h: 2A/h=b+c
Subtract b: 2A/h+b=c
The difference between
five-halves of a number and 17 is 48
Answer:
31, the five halves of is 6.2
Step-by-step explanation:
Fdgbfrgrth Rheu Hyueheuhuhuhuheeuhuhuhe
Julie has a jewelry box shaped like a cube. The volume of the jewelry box is V cubic inches. Use this information to answer Questions 6 and 7. Write an expression that represents the edge length of Julie's jewelry box in inches.
Answer:
s = ∛V
Step-by-step explanation:
The relationship between edge length (s) and volume (V) of cube is ...
V = s³
Taking the cube root of both sides of this equation gives you an expression for the edge length:
s = ∛V
_____
Additional comment
The units of s will be the cube root of the units of V. If V is in cubic inches, then s is in inches.
For each equation, determine if y is a function of x. x+y=25
Answer: Yes
Step-by-step explanation: Depends on what x equals.
A cooking pot holds 35 liters of water. This is 7 times the amount of water a mixing bowl can hold.
How much water can the mixing bowl hold?
A. 5 liters
B. 7 liters
C. 28 liters
D. 245 liters
Answer is A :) just simply divide 35 and 7 and you get 5!
answer .
5
explanation.
simple just 35 divide by 7
Please answer right!
Answer:
Step-by-step explanation:
5x + 2 - 3x - 1 = 3x + 2
5x - 3x - 3x = - 2 + 1 + 2
5x - 6x = 1
-1x = 1
x = 1 / -1
x = -1
Here is a list of number 31,29,33,37,43,38,33,40a) work out the range of the number in the list
Answer:
14
Step-by-step explanation:
Range means the difference between the highest and lowest values in a set.
According to this question,
31, 29, 33, 37, 43, 38, 33, 40
Highest value = 43
Lowest value = 29
Now lets find the range of this data set.
Range = 43 - 29
= 14
Hope this helps you.
Let me know if you have any other questions :-)
Complete the equation so that it has one solution.
-2z+3-z=□-4z+2
answer...
ExplanasionStep-by-step explanation:
Step 1: switch sides and add up.
[tex] z + 1 - x = 0[/tex]
Step 2: switch sides for z is alone
[tex]z = x - 1[/tex]
Note: I used the blank space as x.
