Solve by elimination
-3x+2y=10
-2x-y=-5

Answers

Answer 1
First you need to get two similar terms to eliminate, I'll do y:
-3x + 2y = 10
-4x - 2y= -10
And then you minus
x = 20
Now you can substitute x in to one of the equations to find y:
-60 + 2y = 10
+ 60
2y = 70
÷ 2
y = 35
So your values are y = 35 and x = 20. Hope this helps!

Related Questions

What other information is needed to prove that the two triangles congruent by SAS?
Picture description: there are two triangles showing line LT = line MQ and L=M
A. B. C. Line GT = line NQ <<
D. Line LG = line MN

What other information is needed to prove the two triangles congruent by SAS? Pick 2.
A. S = U<<
B. T = V
C. S = V
D. T = U
E. Line RS = line WU<<<
F. line RT = line VU

Answers

Answer:

D. LG = MN

Step-by-step explanation:

Final answer:

To prove two triangles congruent by SAS, we require equality of two sides and the included angle. Given line LT = line MQ and angle L = angle M, we also need line GT = line NQ and line LG = line MN. For the second part, line RS = line WU and line RT = line VU are necessary to fulfill SAS criteria.(Options C and D for first and Option E and F for second)

Explanation:

When proving two triangles are congruent using the Side-Angle-Side (SAS) postulate, you need to know that two sides and the included angle (the angle between the two sides) of one triangle are exactly equal to two sides and the included angle of another triangle.

In the given problem, we're told that line LT is congruent to line MQ and angle L is congruent to angle M. The additional information needed to prove triangle congruence by SAS would be to show that the second pair of sides around the included angle are also congruent (as in option C Line GT = line NQ) and to ensure congruence on the corresponding parts of the other triangle (as in option D Line LG = line MN).

Answering the second part, to prove congruence by SAS, we would need two corresponding sides and the included angle. Therefore, the correct choices are option E Line RS = line WU which provides the second side, and option F line RT = line VU ensures the sides are corresponding in the two triangles, enclosing the angle which is already given as equal.

Enzo begins playing video games at 7:10. he logs off at 7:25.

Answers

what 's the question?

Casey is making a flower arrangement with roses(r) and carnations(c). The cost of each rose is $0.50 and the cost of each carnation is $0.10. The arrangement has a total of 80 flowers and the flower cost was $20. How many of each flower did Casey put in her arrangement?

Answers

Boys and girls, we love to teach. The students love it. Teaches a student is to be grateful (pleasing). We love to teach the disciples of the history of the Roman letter ("by means of Literature", abl. Of means). In the game a lot (many) are students. * * To mature to learn the use of Latin in the disciples

There are 4 quarters in 1 dollar. The total number of dollars is a function of the number of quarters. Does this situation represent a linear or nonlinear function? Explain why.

Answers

A Linear function because the slope is constant.
If dollars represents the "y value" and quarters the "x value"
Then slope = rise/run = 1/4

[tex]y = \frac{1}{4} x [/tex]

The situation represents the linear function.

Given that,

There are 4 quarters in one dollar. The total no of dollars represents the function of the no of the quarter.

Based on the above information, we can say that

When dollar presents y value and the quarter presents x value

So, the slope should be [tex]\frac{1}{4}[/tex]

The linear function should be [tex]y = \frac{1}{4}x[/tex]

Therefore we can conclude that the situation represents the linear function.

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Given the function f(x) = −2x + 8, find x if f(x) = 14 ...?

Answers

14 = - 2x + 8
2x = - 6
x = - 3
Solution:

14 = -2x +8
6 = -2x
3 = -x

x = -3

What are 3 numbers that round to 54.5 when rounded to nearest tenth

Answers

54.49, 54.48, 54.47.

If the number after the tenth is 5 or above, that number changes to 0 and disappears, and it makes the tenth one bigger number.

Final answer:

Three numbers that round to 54.5 when rounded to the nearest tenth are 54.45, 54.55, and 54.55.

Explanation:

When rounding to the nearest tenth, we look at the digit in the hundredths place. If the digit is 5 or greater, we round up. If the digit is less than 5, we round down. In this case, we want to find three numbers that round to 54.5 when rounded to the nearest tenth. One possible set of numbers is 54.45, 54.55, and 54.55. When rounded to the nearest tenth, all of these numbers round to 54.5.

Factor and simplify: 4a^2c^2(a^2-b^2+c^2)^2

Answers

4a^2c^2(a^2-b^2+c^2)^2 First, solve the exponent around the quantity. Being that it's a power of a power, you would multiply all the exponents inside the parentheses by two. So, after that, it would be: 4a^2c^2(a^4-b^4+c^4) Then, you would multiply what's outside the parentheses with every term within the parentheses: (4a^6c^2)-(4a^2c^2b^4)+(4a^2c^6) Now, you think you can take it from here, or do you need me to keep going?

Four out of fifteen people surveyed say they plan to vote yes on Measure 2. Based on this sample, how many people out of 210 would you expect to vote yes?

Answers

The percentage of people who will vote = 4/15 * 100 = 26.66%

Now, from 210 people, it would be: 210 * 26.66/100 = 56

So, your final answer is 56

Hope this helps!

Answer:

56

Step-by-step explanation:

The answer is 56 just clarifying the top answer :))

Which of the sets of ordered pairs represents a function?

A = {(−4, 5), (1, −1), (2, −2), (2, 3)}

B = {(2, 2), (3, −2), (9, 3), (9, −3)}

1. Only A
2. Only B
3. Both A and B
4. Neither A nor B

Answers

A function WILL NOT have any repeating x values. They can have repeating y values, just not the x ones. So just look at the x values.

so look at x values in  A.....are there any repeating x values ? Yes there is....there are repeating 2's...therefore, A is not a function.

now look at the x values in B...are there any repeating x values ? yes there is....there are repeating 9's....so B is not a function.

so neither A or B are functions


What is 8.5 divided by 520?

Answers

0.01634615
hope this helps. :)

Factor completely 50a2b5 – 35a4b3 + 5a3b4
Answer
10b2 – 7a2 + ab
a2b3(50b2 – 35a2 + 5ab)
5(10a2b5 – 7a4b3 + a3b4)
5a2b3(10b2 – 7a2 + ab)
...?

Answers

Answer:

The factored form of the given expression is [tex]5a^2b^3(10b^2-7a^2+ab)[/tex]

Step-by-step explanation:

We have been given the expression [tex]50a^2b^5-35a^4b^3+5a^3b^4[/tex]

In order to factor it completely we can check for the GCF (greatest common factor) among all the three terms

The GCF is [tex]5a^2b^3[/tex]

On factor out the GCF, we are left with

[tex]5a^2b^3(10b^2-7a^2+ab)[/tex]

Therefore, the factored form of the given expression is [tex]5a^2b^3(10b^2-7a^2+ab)[/tex]

Answer:

given expression is [tex]5a^{2} b^{3} (10b^{2}-7a^{2} +ab)[/tex]

Step-by-step explanation:

Javier drove 45 miles. this represents 60% of his entire rode trip. what is the total number of miles in javier's trip?

Answers

45 ÷ .60 = 75


75 miles is the total

A rectangle is inscribed in the upper half of the circle x2 y2 = a2 as shown at right. calculate the area of the largest such rectangle.

Answers

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below is the solution, i hope it helps:
A = 2 x (a^2+x^2)^.5 
dA/dx = 2 x (2x)(.5)(a^2+x^2)^-.5) + 2 (a^2+x^2)^.5 

= 0 for max or min

What is to find an approximate value for a number is called? any words starting with the letter 'r'?

Answers

rounding ? The approximate value of 5.8 = 6...see how I rounded. Possibly ...it starts with an r

triangle ABC has vertices A (0,10) B (4,10) and C (-2,4) find the orthocenter of triangle ABC

Answers

(-2, 12) is the orthocenter of triangle ABC

Answer:

Hence the orthocenter is (-2,12)

Step-by-step explanation:

We need to find the Orthocenter of ΔABC with vertices A(0,10) , B(4,10) and C(-2,4).

" Orthocenter of a triangle is a point of intersection, where three altitudes of a triangle connect ".

Step 1 :  Find the perpendicular slopes of any two sides of the triangle.  

Step 2 : Then by using point slope form, calculate the equation for those two altitudes with their respective coordinates.

Step 1 :  Given coordinates are: A(0,10) , B(4,10) and C(-2,4)

Slope of BC = [tex]\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}= \dfrac{4-10}{-2-4}=\dfrac{-6}{-6}=1[/tex]

Perpendicular Slope of BC = -1

( since for two perpendicular lines the slope is given as: [tex]m_{1}\times m_{2}=-1[/tex]

where  [tex]m_{1},m_{2}[/tex] are the slope of the two lines. )

Slope of AC = [tex]\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{4-10}{-2-0}=\dfrac{-6}{-2}=3[/tex]

Perpendicular Slope of AC= [tex]\dfrac{-1}{3}[/tex]

Step 2 :  Equation of AD, slope(m) = -1 and point A = (0,10)


[tex]y - y_{1} = m\times (x-x_{1})[/tex]

[tex]y - 10 = -1(x - 0)\\y - 10 = -x \\x + y = 10---------------(1)[/tex]

Equation of BE, slope(m) =\dfrac{-1}{3} and point B = (4,10)


[tex]y - y_1 = m(x - x_1)[/tex]

[tex]y - 10= \dfrac{-1}{3} \times (x - 4)[/tex]


[tex]3y-30=-x+4[/tex]

[tex]x+3y =34[/tex]----------(2)

Solving equations (1) and (2), we get

(x, y) = (-2,12)

Hence, the orthocenter is (-2,12).


Find all real values of x, such that f(x)=0.
f(x)=15-3x ...?

Answers

[tex]f(x)=15-3x \\f(x)=0 \\0=15-3x \\3x=15 \\x=5[/tex]

the quantities s and t are positive and are related by the equation s=k/t, where k is a constant. if the value of S increased by 50 percent, then the value of T decreases by what percent??? ...?

Answers

well if you solve for t t = k/s Increasing by 50% is equivalent to multiplying by 1.5 t = k/(1.5s) 1/1.5 = 0.667 t = 0.667(k/s) t decreased by 33.3%

Hydra are small freshwater animals. They can double in number every two days. Suppose there is an initial population of 60 hydra, when will there be more than 5000 hydra?

Answers

in about 168 days !!!!!!!!!!!!!

What is the value of y in terms of x in the following equation? x - 8y = 1/4

Answers

x - 8y = 1/4
-8y = -x + 1/4
y = 1/8x - 1/32
x-8y = 1/4
8y = x-1/4
y = x-1/4 /8
y = x/8 - 1/32

factored form of 25x^2+40x+16

Answers

I hope this helps you

Multiplying a trinomial by a trinomial follows the same steps as multiplying a binomial by a trinomial. Determine the degree and maximum possible number of terms for the product of these trinomials: (x2 + x + 2)(x2 – 2x + 3). Explain how you arrived at your answer.

Answers

I think this attachment will help you

The product of the given trinomials will have a degree of 4, and since there are 9 terms, the maximum possible number of terms for the product is 9.egree of 4 and a maximum possible number of terms of 9.

When multiplying two polynomials, the degree of the resulting polynomial is the sum of the degrees of the two polynomials being multiplied.

In this case, both trinomials have a degree of 2.

The maximum possible number of terms in the product of two polynomials is the product of the number of terms in each polynomial.

For the first trinomial, there are 3 terms, and for the second trinomial, there are also 3 terms.

Multiplying these together gives a maximum possible number of terms of 9.

To arrive at this conclusion, you can use the distributive property, where each term in the first trinomial is multiplied by each term in the second trinomial, resulting in a total of 9 possible term combinations.

Therefore, the product of the two trinomials will have a dTo multiply two trinomials, like [tex]\( (x^2 + x + 2)(x^2 - 2x + 3) \)[/tex], you apply the distributive property repeatedly, multiplying each term in the first trinomial by each term in the second trinomial and then summing up the products.

Each term in the first trinomial needs to be multiplied by each term in the second trinomial, resulting in a total of [tex]\( 3 \times 3 = 9 \)[/tex] products.

Now, regarding the degree, when you multiply two polynomials, you add the degrees of the polynomials.

Here, both polynomials are of degree 2, so the resulting polynomial will be of degree 2 + 2 = 4.

Thus, the product of the given trinomials will have a degree of 4, and since there are 9 terms, the maximum possible number of terms for the product is 9.egree of 4 and a maximum possible number of terms of 9.

Rita's company reimburses her expenses on food, lodging, and conveyance during business trips. The company pays $55 a day for food and lodging and $0.45 for each mile traveled. Rita drove 300 miles and was reimbursed $2,335. Part A: Create an equation that will determine the number of days x on the trip. (3 points) Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points) Part C: How many days did Rita spend on this trip? (1 point) 

Answers

Alright... Big Question! So, we have to create equations for this... Part A:

m = miles traveled
x = days on trip
y = reimbursement

y = 0.45m + 55x

Part B:

2,335 = 0.45(300) + 55x
x = 40

Part C:
She spent 40, as x = days = 40.

Part A)

m = miles traveled

x = days on trip

y = reimbursement

55x + .45m = y

Part B)

55x + .45(300)= 2335

55x+ 135 = 2335

subtract 135 on both sides

55x= 2200

divide by 55 on both sides

x= 40

Part C) Rita Spent 40 Days on This Trip


1.5x-2<10 how do you solve this

Answers

5x - 2 < 10
+ 2
5x < 12
÷ 5
x < 2.4
Hope this helped!

use the concept of slope to find t such that three points are collinear
(-3,3) (t,-1) (8,6)

Answers

let be A(-3,3), B(t,-1), and C(8,6), three points are collinear means the vector vecAB and vecAC or vecAB and vecBC are collinear
for example
AB and AC are collinear,equivalent of det(vecAB, vecAC )=0
vecAB =(t+3, -4) and vecAC = (11, 3)
det(vecAB, vecAC )=3(t+3) +11(4)=3t+9 +44=0, it implies t= - 53/3
so t = - 53/3

Factor each polynomial (1)64-40ab

Answers

64-40ab
=8(8-5ab)
....................................

How much would $500 invested at 6% invested compounded monthly be worth after 5 year? Round your answer to the nearest cent.

Answers

500(1+0.06/12)^60=???????

If n is a positive integer, then lim (n-->infinity) (1/n) [1/(1+(1/n)) + 1/(1+(2/n))+...+1/(1+(n/n)] is?
the above can be expressed as
a.) integral from 0 to 1 of (1/x) dx
b.) integral from 1 to 2 of (1/(x+1))dx
c.) integral from 1 to 2 of (x)dx
d.) integral from 1 to 2 of (2/(x+1))
e.) integral from 1 to 2 of (1/x)

Answers

Final answer:

The given sequence is in the form of a Riemann sum for the integral of the function 1/(1+x) from 1 to 2. So, the correct answer is b) 'integral from 1 to 2 of (1/(x+1)) dx'.

Explanation:

The sequence in the question seems to be in the form of a Riemann sum for an integral. The term inside the summation loop can be expressed as 1/(1+i/n) where i varies from 1 to n. The limit of the sequence as n tends to infinity can be thus represented as the integral from 0 to 1 of the function 1/(1+x) dx. The function 1/(1+x) is a continuous function over the interval [0,1], so the integral exists and the limit of the sequence is legitimately defined.

Therefore, looking in the options provided, the answer to your question will be 'b.) integral from 1 to 2 of (1/(x+1)) dx'. This integral is the limit of the given series as n approaches infinity.

Learn more about Riemann Sum here:

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Final answer:

The limit as 'n' approaches infinity of this summation is equal to the integral from 1 to 2 of (1/(x+1))dx. Essentially, this question is turning the sum into an integral as 'n' approaches infinity.

Explanation:

This question is asking for the limit of a sum as n approaches infinity, which is essentially the definition of an integral. Every term in the sum could be expressed as 1/(1+i/n), where 'i' is the sum index. Each term, when 'n' becomes infinitely large, becomes a term of the form i/n, or Δx, which is a small piece of the variable we’re integrating. Similarly, each 1/(1+i/n) term turns into 1/x for that small piece.

Given these transformations and the fact that the index i ranges from 1 to n, it's clear that as n approaches infinity, we are integrating the function 1/x from 1 to 2.

Thus, the correct answer would be: b.) integral from 1 to 2 of (1/(x+1))dx

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The equation y=ax describes the graph of a line. If the value of A is megative the line:
a) goes down and to the left
b) goes up and to the left
c) is vertical
d) is horizontal

Answers

go up and to the left
C. It goes up and to the left as y keeps increasing in a positive sense as x keep getting more negative. (and it also goes down and to the right because y keeps decreasing as x increases) and Because, the function will have a negative slope y = -x

The ratio of peaches to plums is 3:8. If there are 99 fruits how many plums are there?

Answers

3+8=11
11 units
99=11 units
divide by 11 both sides
9=1 unit

plums=8 units
8*9=72
72 plums

The graph shows the processing speeds of computers as a function of time since 1980.


Which statements are true about the function?

Select each correct answer.

A. The range is y≥16 , so the processing speeds are always positive.

B. The point (0,16) represents an initial processing speed of 16 MHz.

C. The point (10,256) represents the maximum processing speed.

D. The domain is x>0 , so the processing speed increases over time.

E. The graph is ascending, indicating that the processing speed increases over time.

Answers

Answer:

A, B and E are correct.

Step-by-step explanation:

We are given a function representing the processing speed of computers with respect to time.

Let, x-axis = axis corresponding generation and y-axis = axis corresponding the processing speed.

We can see that the the starting point of the function is (0,16). This gives us that the range of the function is y≥16 and (0,16) represents the initial speed of the computer.

So, option A and B are correct.

As, we can see that the function is going upwards after passing the point (10,256). This gives us that, this point does not the represent the maximum processing speed.

So, option C is not correct.

Also, only the domain being x>0 does not imply that the processing speed increases.

So, option D is not correct

Further, as the graph is ascending, so we see that as time increases, the processing speed increases.

So, option E is correct.

Answer:

The correct statements are in bold.

A. The range is y≥16 , so the processing speeds are always positive. (As the initial point is 16 and the graph is going upwards from there hence,the range y≥16 shows positive speed growth. Below this range, the speed will fall.)

B. The point (0,16) represents an initial processing speed of 16 MHz. (This is clearly visible in the graph.)

C. is not right as the graph is going up from 10256.

D. This is also not right. The given domain is not specific of speed.

E. The graph is ascending, indicating that the processing speed increases over time. (We can see as the time increases, the processing speed increases.)

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