Answer: {-1, 0}
Explanation: Since y = -7x - 7, we can replace the y in our first equation with
a -7x - 7 and our first equation now reads 4x + 4(-7x - 7) = -4.
To solve this equation, first distribute the 4 through the parenthses.
So we have 4x - 28x - 28 = -4.
Now simplify the left side to get -24x - 28 = -4.
Adding 28 to both sides, we have -24x = 24.
Dividing both sides by -24, we find that x = -1.
To find y, plug a -1 back into either equation.
So we have y = -7(-1) - 7 or y = 0.
Our final answer is {-1, 0}.
Answer:
x= -1,
y=0
Step-by-step explanation:
[tex]\begin{bmatrix}4x+4y=-4\\ y=-7x-7\end{bmatrix}\\\\\mathrm{Subsititute\:}y=-7x-7\\\\\begin{bmatrix}4x+4\left(-7x-7\right)=-4\end{bmatrix}\\\\Simplify\\\\\begin{bmatrix}-24x-28=-4\end{bmatrix}\\\\Isolate\:x \:for \:-24x-28=-4\:\::x =-1\\\\\mathrm{For\:}y=-7x-7\\\\\mathrm{Subsititute\:}x=-1\\\\y=-7\left(-1\right)-7\\\\-7\left(-1\right)-7 =0\\\\y=0\\\\\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}\\x=-1,\:y=0[/tex]
Farrah borrowed $155 from her brother. She has already paid back $15. She plans to pay back $35 each month until the debt is paid off.
Answer:
Just subtract 155 from 15 and divide that number what you got from 155 - 15 and divide it to 35.
Step-by-step explanation:
I dont know how much months are there so how much months you divide it from 35.
Answer:
A,b and d
Step-by-step explanation:
Pleeeaaase help!
I have 153 Kit Kats. Every day I eat 7, how many days would it take to have no less than 77 Kit Kats?
answer: it will take 11 days
The sum of two numbers is 63. The larger number is three more than four times the smaller number. Find both numbers.
what is -3x + 7 = 19?
PLEASE SHOW YOUR WORK!!!!
Answer:
x=-4
Step-by-step explanation:
-3x+7=19
minus 7 from both sides
-3x=12
x=-4
Sam traveled 7.5 kilometers from his house to reach the highway. On the highway, he travels at an average speed of 55 kilometers per hour. Which equation can be solved to find t, the time in hours Sam travels on the highway to reach a farm 22 kilometers away from his house?
Answer:
0.2636 hrs
Step-by-step explanation:
Number of kilometers from Sam's house to highway = 7.5 km
Average speed traveled on highway = 55km/hr
Which equation can be solved to find t, the time in hours Sam travels on the highway to reach a farm 22 kilometers away from his house?
Time traveled (t) to reach a farm 22 kilometers from his house :
t = time in hours Sam travels on the high way:
Distance from highway to farm = (Distance of farm from Sam's house - distance from Sam's house to highway)
22km - 7.5km = 14.5km
Speed of travel on highway = 55kmph
Travel time = distance / speed
Travel time = 14.5km / 55km/hr
Travel time = 0.2636 hrs
the perimeter of an equilateral triangle is 8 inches more than the perimeter of a square, and the side of the triangle is 5 inches longer than the side of the square. Find the side of the triangle
Answer:
An equilateral triangle has all 3 sides the same length
If one side of the triangle has length x, the perimeter = 3x
If one side of the square is 5 less than a side of the triangle
then the square has side length x-5 and perimeter 4(x-5) = 4x-20
Since the perimeter of the triangle is 7 more than
the perimeter of the square then our equation is:
3x = 4x-20+7
3x = 4x-13
x = 13
The sides of the triangle are 13 inches
The sides of the square are 13-5=8 inches
Stephanie and Bryson both grow tomatoes to sell at farmers' markets. Stephanie grew a total of 70 pounds
of tomatoes to sell. She plans to sell the tomatoes for $3.50 per pound. The equation below represents the
profit in dollars, f(x), she will earn by selling x pounds of the tomatoes.
f(x) = 3.50x -110
Bryson plans to sell his tomatoes at a different farmers' market. He grew a total of 90 pounds of tomatoes.
The table below shows the profit, in dollars, he will earn by selling different numbers of pounds of
tomatoes.
Bryson's Tomato Sales
-97.50 -55.00 -12.50 30,00
Profit (dollars)
Pounds of
Tomatoes Sold
10
20
30
40
Answer:
See below
Step-by-step explanation:
Stephanie's profit relationship:
f(x) = 3.50x - 110Bryson's Tomato Sales, using the pairs of numbers let's find the relationship.
(10, -97.50) and (20, -55.00)Since it is also linear relationship, we'll find a slope and y-intercept:
m = (-55 - (-97.50))/(20 - 10) = 42.50/10 = 4.25y-intercept is:
-97.50 = 4.25*10 + b ⇒ b = -97.50 - 42.50 = - 140So the function is:
g(x) = 4.25x - 140Comparing the functions:
f(x) = 3.50 - 110g(x) = 4.25 - 140The slope of g(x) is greater than f(x) but the y-intercept is smaller
It translates as:
Bryson sells tomatoes at greater price: 4.25 vs 3.50 per poundStephanie needs to sell 110/3.5 = 31.4 pounds of tomatoes before making any profitBryson needs to sell 140/4.25 = 32.9 pounds of tomatoes before making any profit༼ つ ◕‿◕ ༽つ
can anyone help me
2x2x3x2x5squared6
What is the answer of t²=81
Answer:
t = 9
Step-by-step explanation:
This is the answer because:
1) [tex]9^{2}[/tex] is the same as 9 x 9
2) 9 x 9 = 81
Hope this helps!
Hugo has 7 yards of wood. He is going to cut the wood into pieces that are each yard long.
What is the maximum number of -yard pieces that Hugo can cut from the original piece of wood?
Answer:
7
Step-by-step explanation:
How many times smaller is a group of 19 coins than a group of 76 coins?
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
Ok I like looking at these type of questions like this. If you have 76 students and you want to put them in groups of 19. How many groups would you have?
That's easier for my brain to comprehend and now I know that all I have to do is divide the 76 students by 19 to get 4 groups.
So in your problem the 19 coins would be 4x smaller than the 76 coins.
There are 4 ducks to 6 geese. There are 6 ducks to 8 geese. There are 8 ducs to 10 geese. What does the function show?
Answer: +2 more geese
Step-by-step explanation:
We see that we have to add 2 for each of these:
4 + 2 = 6
6 + 2 = 8
8 + 2 = 10
The answer to the question is 10. Hope this helps!
At Yvonne's auto dealing, car washes cost $5 for any time up to 10 minutes, plus $ .40 per minute after that. The managers at Yvonne's are trying to agree on a formula for calculating the cost c for a t-minute car wash. Sid thinks c = 0.4t + 5 is correct. Is he correct?
Answer:
He is incorrect
Step-by-step explanation:
Here, given the charge at the auto dealing, we want to know if the formula the managers came up with is correct
The base fee is $5 for 10 minutes or less
Now for any extra minute after the tenth, $0.5 will be paid
So for a t-minute wash, the amount to be paid will be;
C = $5 + 0.4( t- 10) = 5 + 0.4t - 4 = 1 + 0.4t
If t < 10 , C = $5
If t > 10, C = 1 + 0.4t
Sid is incorrect
PLS NEED HELP ASAP!!
Kaylissa is staining a shelf. The varnish takes
three times longer than the stain to dry.
Write an expression to represent the time it
takes the varnish to dry.
Me. Schnable are 20% more McNuggets for lunch today than yesterday. If he ate 24 McNuggets for lunch today, how many did he eat yesterday?
Need help! Giving 15 points!
Answer:
4.8
Step-by-step explanation:
Answer: yesterday he ate 19.2 mc nuggets, i calculated it in my head, and its right, i even asked my math teacher
Step-by-step explanation:
Sabah has $450 to pay for college textbooks. She expects to pay about $75 per book. Her friend told her that 4 of them can be checked out of the library for free.
Complete the equation below to find the total number of books that Sabah can get for her classes. Use b to represent the total books.
Answer: I believe it would be 10 books?
Step-by-step explanation: because 450/75=6 and since 4 are free, then 6+4=10 b
I need help FAST; It is the end of the semester (at 11:59pm) and I cannot fail.
1. Miss Firkin is selling her Nike Air Force Ones. She bought them online for $75.00, but they were too big for her and she's tripping all over herself (scuffing the tips). She needs to make some extra money to buy Halloween candy....She wants to mark up the sneakers 150%. What is she charging for them?
2. Miss Firkin went to Wal-Mart and iced cupcakes that were $12.99 a box had a sticker that said 30% off. How much is one box?
What did she pay for 3 boxes?
3. Now, what if the cupcakes are taxed as fast food items at a rate of 9%?
4. How much does she now spend on the 3 boxes?
5. Gas was $1.25 per gallon. Now it is $1.38 per gallon. What percent did it increase by? (really not that tricky)
1. I beleive it would be 187,5$, 75.00 + 150% = 187,5.
2. if rounding it would be 9.1$ she had to pay for one times 3 would be 27.3 for three boxes.
3. Not sure what this question is asking but I'll try my best so here: 27.3 +9% × 3 = 89.271 rounded would be 90$
4. 90$ if I did that correctly
5. 1.38 - 1.25 = 0.13 which I beleive would be 13%
0.13 as a percent woudl be 13%
solve for x (x-2)+10=12
Answer:
4
Step-by-step explanation:
x-2=12-10
x-2=2
x=4
PLEASE HELP, DUE SOON!!
Answer:
can you give me an brainliest
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
The ordered pair (1, -1) is a solution of which system?
Please help due in a hour!
Please help me!!!! Fast
Answer: y x 6 - 2=16
Step-by-step explanation: y has to be 5
A number generator was used to simulate the percentage of people in a town who join a health club yearly. The process simulates randomly selecting 100 people from the town and was repeated 20 times. The percentage of people who join a health club yearly is shown in the dot plot Which statement is most likely true about the population of the town? 0 10 20 30 40 50 60 70 80 90 100 Most likely, 40% of the people in the town join a health club yearly. Most likely, about 10% to 20% of the people in the town join a health club yearly Most likely, about 40% to 60% of the people in the town join a health club yearly Most likely, 50% of the people in the town join a health club yearly.
Answer:
Most likely, 60% to 75% of the town rides a bike. is the correct answer!
Step-by-step explanation:
The
statement
which is most likely
true
about the
population
of the town is that
60%
to
75%
most likely
rides
a
bike
.
What is Percentage?
This is defined as a number or
ratio
expressed as a
fraction
of
100
and is
expressed
in terms of
%.
Due to the
low percentage
of people in a town who join a health club yearly, it is most likely that performing exercises were prevalent. This therefore means that
majority percentage of people
rides a bike which is 60-75%
Read more about
Percentage
here https://brainly.com/question/24304697
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Determine whether WX and YZ are parallel, perpendicular, or neither
W(-6, -6),x(5,8), Y(4,7), Z(-1,0)
a. parallel
b. neither
c. perpendicular
please help, which do I shade green and red?? thanks
Answer:
shade all of the squares with two capital Ns (NN) red. Shade all the squares with one capital N and one Lowercase n with green. Leave the rest (nn) unshaded.
Step-by-step explanation:
[tex]shade \: all \: NN \to \boxed {red} \: \to \: \\ (they \: are \: all \: \boxed{ \: dominant \: offsprings} \: ) \\ \\ shade \: all \: Nn \to \boxed {green} \: \to \\ (they \: are \: all \: \boxed{hoterozygous \: }offsprings)\\ \\ shade \: all \: nn \to \: \boxed {nothing} \: \to \\ (they \: are \: all \: \boxed{ \: recessive \:offsprings \: })[/tex]
Use this graph of a fifth-degree polynomial function to determine the number of real and complex zeros the function has.
Answer: The polynomial has 3 real zeros and 2 complex zeros.
Step-by-step explanation:
PLATO user
The polynomial has 3 real zeros and 2 complex zeros.
What is polynomial function ?A quadratic, cubic, quartic, and other functions involving only non-negative integer powers of x are examples of polynomial functions. We can define a polynomial's degree and provide a generic definition for it.Zero polynomial function, linear polynomial function, quadratic polynomial function, and cubic polynomial function are the four most prevalent types of polynomials used in precalculus and algebra.A polynomial function whose all coefficients of the variables and constant terms are zero. In other words, zero polynomial function maps every real number to zero, f: R → {0} defined by f(x) = 0 ∀ x ∈ R.Both terms , the values of a polynomial f(x) that make f(x)= 0.
a polynomial whose coefficients are real numbers, but the field of real numbers is not algebraically closed.
The polynomial may very well have roots that are complex numbers, not real .
Let [tex]x^{2}[/tex] + 1 = 0 has root i and -i .
In this polynomial function we got 3 real zeros and 2 complex zeros.
Learn more about polynomial function brainly.com/question/22256909
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What is the slope of the line represented by the equation 2x+3y= –12 ?
Please write down all of your thinking and show your work.
9514 1404 393
Explanation:
It is hard to tell what sort of axioms or theorems you might have available to invoke for this proof. Here, we'll assume that you can use the fact that the sine function of acute angles maintains ordering:
sin(a) > sin(b) iff a > b . . . . . where 0 ≤ a, b ≤ 90°
__
Draw altitude TX, where X lies on RS. The sine relation tells you ...
TX/TS = sin(∠S)
TX/TR = sin(∠R)
Dividing the second equation by the first, we have ...
sin(∠R)/sin(∠S) = (TX/TR)/(TX/TS) = TS/TR
Given that ∠R > ∠S, we know sin(∠R) > sin(∠S), so we have ...
sin(∠R)/sin(∠S) = TS/TR > 1
TS > TR . . . . multiplying by TR
Find the missing value ( 200 points if your answer is weird you will get reported).
(2x - 3)(x + 4) = 2x2 +____ - 12
Answer:
2x^2 + 5x - 12
Step-by-step explanation:
To distribute these two factors, use FOIL(First, Outer, Inner, Last) in this order.
(2x - 3)(x + 4) = 2x(x+4) - 3(x+4) = 2x^2 + 8x - 3x - 12 = 2x^2 + 5x - 12 .
(2x - 3)(x + 4) =
(2x * x) + (2x * 4) + (-3 * x) + (-3 * 4)
___________________________
(2x - 3)(x + 4)
| | | |
F F
O O
I I
L L
Find the slope of the line
Answer: 1/4
Step-by-step explanation:
Erin knit a total of 40 centimeters of scarf over 5 nights. After 24 nights of knitting, how many centimeters of scarf will Erin have knit in total? Solve using unit rates.
Answer:
192 over 24 days
Step-by-step explanation:
40 divided by 5 is 8
8 times 24 nights is 192