What is the solution to the following system of
equations?
-2x + 8y = - 14
- 4x + y = - 13
Answers
Y-1
X3
Related Questions
I need help with this problem, if someone could help me? Please don't guess I really need to understand this algebra.
Answers
Hi, sir or ma'am, you said you needed help but you provide no information on what to help you with, no picture or anything.
Answer:
You need to upload an image of what you are talking about
Step-by-step explanation:
Which difference is about 10?
A. 33.2-28.4
B. 70.9-58.7
C. 42.5-16.8
D. 65.7-65.6
Answers
Answer:
Step-by-step explanation:
b
Solve four-tenths plus four ninths
Answers
Answer:
[tex]\frac{38}{45}[/tex]
Step-by-step explanation:
[tex]\frac{4}{10} +\frac{4}{9}[/tex]
So first you need to have a common denominator (the number on the bottom)
The least common denominator (LCD) would be 90.
So then the fractions would be: [tex]\frac{36}{90} +\frac{40}{90}[/tex].
Add.
You get: [tex]\frac{76}{90}[/tex]
Simplify and the answer is [tex]\frac{38}{45}[/tex]
What is the distance between the points (15,17) and (15,-4) in the coordinate plane?
A.
21 units
B.
10.5 units
C.
13 units
D.
2 units
Answers
Answer:
21
Step-by-step explanation:
15-15=0
17-(-4)=21
sqrt(0^2+21^2)=21
7/8 divided by 3/4 is what?
Answers
Answer:
1/8
Step-by-step explanation:
3/4=6/8
7-6=1
therefore 1/8
Answer:
7/6
Step-by-step explanation:
7/8 divided by 3/4= 7/8 x 4/3 = 28/24= 7/6
please help this is due in 10 minutes!!!!!!
Answers
Answer:
Step-by-step explanation:
you just gotta add all the side-lengths together and consider each grid square as 10 instead of 1.
so 70 + 40 + 20 + 60 + 20 + 40 i believe.
this all equals 250.
ask your teacher if its a type, because there's no 250 on there. grab a calculator or something as proof.
Please help me ASAP
Answers
the answer should be A
divide 4x+2x^3+7x^2-1 by x=-1
Answers
Answer:
12
Step-by-step explanation:
4(1)+2(1)”3+7(1)”2-1
4+2+7-1
12
wait if x=-1 it’s zero
Mao counts by fives to 30.alana counts by tens to 40.who will say more numbers? Explain
Answers
Answer:
Mao will say more numbers
Step-by-step explanation:
Mao will say more numbers because, to get to 30, you must count by fives 6 times. For example, 5,10,15,20,25,30. There are 6 numbers there. On the contrary, Alana is only going to count 4 times. 10,20,30,40. 6 is greater than 4, therefore Mao will say more numbers. I hope this helps!
Order of operations
18 ÷ 9 - 4 x 15
Answers
Answer: I'm almost 100% its -58
Prove the polynomial identity.
(4x^2−2)^2−(4x^2)^2=4(1−2x)(1+2x)
Drag and drop the lines of the proof in the correct order to complete the proof.
Answers
Answer:
(4x^2 - 2)^2 - (4x^2)^2 = 4(1 - 2x)(1 + 2x)
16x^4 - 16x^2 + 4 - 16x^4 = 4(1 - 2x)(1 + 2x)
4 - 16x^2 = 4(1 - 2x)(1 + 2x)
4(1 - 4x^2) = 4(1 - 2x)(1 + 2x)
4(1 - 2x^2)(1 + 2x) = 4(1 - 2x)(1 + 2x)
(b) A number increased by -8 is greater than 12
Answers
Answer:
x+-8 > 12 Hope this helps.
the area of 1.25 and 0.8
Answers
Answer:
2.05
Step-by-step explanation:
1.25 + 0.8= 2.05 but if your doing multiplication then it would be 1 just 1.
Eraph the line that represents the equation Y = -2/3x + 1
I need answer ASAP
Answers
9514 1404 393
Answer:
see attached
Step-by-step explanation:
The equation is given in "slope-intercept" form.
y = mx + b
where m is the slope, and b is the y-intercept.
__
For graphing, it is usually convenient to start with the y-intercept. The value of 'b' in your equation is +1, so the graph will go through the point y=1 on the y-axis. That point's coordinates are (0, 1).
The value of m represents the slope, or "rise"/"run" of the line. A slope of -2/3 means the line "rises" -2 units for each "run" of 3 units to the right. Then another point on the graph will be 3 units to the right of the y-axis, and 2 units down from y = 1. That point is (3, -1).
The line is drawn through these points you found on the graph.
Eggs cost $5.40 per doven how many is twenty five eggs cost
Answers
Answer:
135.000
Step-by-step explanation:
5.40 x 25 = 135.000
Answer:
135.000
Step-by-step explanation:
5.40×25= 135.000
PLEASE HELP ME AND HURRY TOO NO LIBKS PLEASE I WILL GIVE BRAINLIEST
Answers
What is the total price of a $45.79 item when a 7% sales taxe is added
Answers
Answer:
The total price after tax is $48.99
Step-by-step explanation:
Answer:
you have to put the 45.79/ 7% That's the taxes and you have to check your work first if you get something else different than a higher number you divide it again in long division and then if that doesn't work try to multiply in decimals
HELP PLEASEEE, I WILL MARK BRAINLEST!
Answers
9514 1404 393
Answer:
∠a = 133°∠b = 15°∠c = 75°∠d = 58°Step-by-step explanation:
We don't know the definitions, properties, postulates, or theorems on your list, so we'll use the following:
a right angle measures 90°a straight angle measures 180°the acute angles in a right triangle total 90°an exterior angle of a triangle is equal to the sum of the remote interior anglesthe measure of an angle is equal to the sum of the measures of its parts.__
∠a = 180° -47° = 133°; reasons 2, 5. The angles form a straight angle.
∠b = 47° -32° = 15°; reason 4
∠c = 90° - ∠b = 90° -15° = 75°; reason 3
∠d = 90° -32° = 58°; reasons 1, 5. The angles form a right angle. If you want to get picky, we know it is a right angle by reasons 1 and 2. The marked right angle and the sum of 32° and ∠d together form a straight angle.
Alex and her friends went out to lunch at the diner. The bill for lunch was $34.56 which included an 8% sales tax. How much was the price of the lunch before tax?
Answers
Answer:
34.48
Step-by-step explanation:
8% as a decimal is 0.08
34.56 - 0.08 = 34. 48
18/3=????????????????????
Answers
Answer:
18/3=6
Step-by-step explanation:
3 can be made out of 18 6 times
What is the equation of this line?
y=3/4x+2
y=4/3x−2
y=3/4x−2
y=−3/4x−2
Answers
Answer:
We need the picture
Step-by-step explanation:
Answer:
Step-by-step explanation:
Where's the line?
GE bisects angle DGF , m angle DGE = 53º. Find m angle DGF.
M angle DGF
Answers
Answer:
4.5 degres
Step-by-step explanation:
Who can answer this?
Answers
Answer:
B
Step-by-step explanation:
Explanation: it’s mirroring the other side
f(x) = x² + 2ax + a² - a
g(x) = 4 - x²
Let variable a be a real number. Find the range of values of a such that the equation f(x) = g(x) has two different solutions.
***The answer should be -2 < a < 4, but I don't know why.
Answers
Step-by-step explanation:
f(x) = x² + 2ax + a² - a
g(x) = 4 - x²
f(x) = g(x)
x² + 2ax + a² - a = 4 - x²
2x²+2ax+a²-a -4 =0
the equation has two different solutions
=> (2a)² - 4(2)(a²-a-4) > 0
4a²-8a²+8a +32 >0
-4a²+8a+32 > 0
a²-2a-8 >0
(a-4)(a+2) < 0
the answer should be
-2 < a < 4
James bought a cak that had 1, 890 calories for 9 servings. What is the calories per serving the cake ?
Answers
Answer:
210 calories per serving
Step-by-step explanation:
In the diagram shown, C is the midpoint of BD. What is the
length of AC?
Set up an equation based on the given information, solve
for x, and plug answer back in to answer the question
Answers
Answer:
AC = 20
Step-by-step explanation:
C is the midpoint of BD.
That means that BC = CD
BC = x + 4
CD = 3x - 10
x + 4 = 3x - 10 Subtract x from both sides
4 = 3x - x - 10 Combine
4 = 2x - 10 Add 10 to both sides
4 + 10 = 2x - 10 + 10 Combine
14 = 2x Divide by 2
14/2 = 2x/2 Combine
7 = x
AC = AB + BC
AC = 2x - 5 + x + 4
AC = 3x - 1
AC = 3*7 - 1
AC = 21 - 1
AC = 20
Given the matrices A and B shown below, solve for X in the equation -3X + A= 3B.
Answers
Answer:
A = 3 B + 3x
B = - X + A/3
Step-by-step explanation:
X = - B + A/3
Hayden has 7 shells . Elly has 5 fewer shells than Hayden . Beth has 2 shells . How many shells do they have in all?
Answers
Answer:
11 i think
Step-by-step explanation:
please help!
The freezing point of seawater is -2 °C. The freezing
point of nitric acid is -42 °C. How much greater is the freezing
point of seawater than the freezing point of nitric acid?
Answers
Answer:
Express concentrations of solution components using mole fraction and molality
Describe the effect of solute concentration on various solution properties (vapor pressure, boiling point, freezing point, and osmotic pressure)
Perform calculations using the mathematical equations that describe these various colligative effects
Describe the process of distillation and its practical applications
Explain the process of osmosis and describe how it is applied industrially and in nature
Step-by-step explanation:
i helped
I need help asaapppp