Solve using substitution.

x + y = 9
–5x + 3y = 19

Answers

Answer 1

Answer:

(1,8)

Step-by-step explanation:

please mark me as brainliest thank you


Related Questions

which one is greater , 65% or 3/5

Answers

Answer:

Step-by-step explanation:

65%  is greater

A side of the triangle below has been extended to form an exterior angle of 66°. Find
the value of x.
xo
48°
66°

Answers

Step-by-step explanation:

By Exterior Angle Theorem, the sum of the 2 inner angles in the triangle will be equal to the exterior angle.

=> x + 48° = 66°, x = 18°.

The required measure of the angle x is given as 18°.

Given that,
A side of the triangle below has been extended to form an exterior angle of 66°

What is the angle?

Orientation of the one line with respect to the horizontal or other respective line is known as a measure of orientation and this measure is known as the angle.

Here,
The property of the triangle state that the sum of the remote interior angle is equal to the measure of the remote exterior angle,
So,
x + 48 = 66
x = 18°


Thus, The required measure of the angle x is given as 18°.

Learn more about Angles here: https://brainly.com/question/13954458

#SPJ5

48 cities three have a lake and 23 have a river running through them what fraction of these 48 cities have a lake or a river running through the show your work

Answers

3/48 + 23/48 = 25/48 25 cities have a lake/river going through them

The area of a square mural pointed on the side of a building is 110 square feet. What is the best estimate of the side length of the mural?

A.10 Feet
B.10.2 Feet
C.10.5 Feet
D.10.8 Feet

Answers

Answer:

C

Step-by-step explanation:

Area of a square equals to the square of its side, therefor the side of a given area for a square is the square root of the area.

[tex]A = a^{2}\\a = \sqrt{A}\\a = \sqrt{110} = 10.48 ft[/tex]

152=8(3a-2) justify each step

Answers

Step-by-step explanation:

152 = 8(3a - 2)

152 = 8 × 3a - 8 × 2

152 = 24a - 16

152 + 16 = 24a

168 = 24a

a = 168/24

a = 7

Answer:

-7

Step-by-step explanation:

152=8(3a-2)

8(3a-2)=152

8(3a-2)/8=(152){8)

3a-2=19

3a-2+2=19+2

3a=21

3a/3=21/3

a=-7

A map is drawn using a scale of 1cm/80 mi
Two cities are 280 miles apart
How far apart are the cities on the map?

Answers

Answer:

280/80 = 28/8 = 7/2 = 3.5 cm

Step-by-step explanation:

the ratio is 1cm/80mi = a cm/280mi

so you get 280cm * mi = 80mi*a cm

so a = 280/80 = 3.5  

8 feet in 15 seconds; 16 feet in 40 seconds
does this rate form a proportion?

Answers

Answer:

no

Step-by-step explanation:

8 ft in 15 sec

16 ft in 40 sec

8 is obviuosly half of 16, so to make it proportional it would have to be 16 ft 30secs

4(46 + 3) + 2b = 3 (6 - 11)

Answers

Answer:

[tex]4(46 + 3) + 2b = 3(6 - 11) \\ 184 + 12 + 2b = 18 - 33 \\ 196 + 2b = - 15 \\ 2b = - 15 - 196 \\ \frac{2b}{2} = \frac{ - 211}{2} \\ b = - 105.5[/tex]

PLSS HELP ILL GIVE BRAINLIEST IF YOU HELP ME AND EXPLAIN UR ANSWER

Answers

Answer:

It is the second choice.

Step-by-step explanation:

Divide both side by pi r squared. Boom.

Answer:

h = V/πr²

Step-by-step explanation:

Its asking you to isolate h. You can simply divide on the right besides h on both sides.

V = πr²h

V/πr² = h

Given mn, find the value of x.
(6x+20)
(8x-10)

Answers


6x+20
=2•3x+2•10
=2(3x+10)

Help me with this multiple choice question!

Answers

Answer:

B -4 A-7 C 0.5 D 2 E3 then F 11

Step-by-step explanation:

What is evil and can trick you

Answers

Answer:

Wizard or the devil

Step-by-step explanation:

Answer:

The devil

[tex]el \: diablo[/tex]

What is the x-value of the solution to the system of equations:

y = -1/2x - 4

y = 2x + 1

Answers

I don’t know but just try your best and you will get it right

Answer:

x = 0

x = (-1/2,0)

Step-by-step explanation:

Write the equation of a line that is parallel to y = -x + 7
and passes through the point (-4, 1). Write your answer
in slope-intercept form, y = mx + b.

Answers

Answer:

y= -x-3

Step-by-step explanation:

A line is parallel to another line if their slope is the same. In this case the slope is -1 (-x is basically -1x). So far we have y=-x+b (We dont know what b is yet). next we can insert the coordinate back into the equation y=-x+b where 1 is the y and -4 is the x.

We get...

y= -x+b

1= -(-4)+b

1=4+b

b=-3

Our final equation is y=-x-3

Hope this helped

Find the values of b such that the function has the given maximum value [tex]f(x) = -x^2+bx-65[/tex]. I already have it in vertex form as [tex]-(x+\frac{b}{2})^2-65+\frac{b^2}{4}[/tex] but I don't know what to do from here

Answers

Answer:

b = {20, -20}

Step-by-step explanation:

Given function:

f(x) = -x² + bx - 65 with maximum value of 35

To find

The value of b

Solution:

Maximum value is obtained at vertex as a < 0

Vertex coordinate of x is:

x = -b/2a = -b / -2 = 1/2b

Solving for b:

35 = - (1/2b)² + b(1/2b) - 65- 1/4b² + 1/2b² = 1001/4b² = 100b² = 400b = √400b = ± 20

See attached


[tex] \frac{3 {c}^{3}d }{9c {d}^{ - 1} } [/tex]
I dont really understand how to do this fully. I just need to simplify it. ​

Answers

i’m sure the answer is c^2d^2/3

HELP PLEASE I HAVE 2 HOURS TO FINISH THIS:

match the given slope (m) and y-intercept (b) with the equation of the line in slope-intercept form.

Answers

Answer: ↓↓↓

Step-by-step explanation:

Slope intercept formula: y = mx + b

Slope, m = 2, y-intercept, b = 5 ---> y = 2x + 5

Slope, m = 3, y-intercept, b = 5 ---> y = 3x + 5

Slope, m = 5, y-intercept, b = 4 ---> y = 5x + 4

The price of a wakeboard that regularly sells for $600 is reduced to $528 by what percentage is the price reduced?

Answers

Answer:

12%

Step-by-step explanation:

600-528=72. (subtract)

72/600= 3/25. (simplify)

3/25 = 12%. ( convert to percent)

(answer accuracy not garunteed)

Answer:

600-528 = 72

72/600 = 0.12

0.12 X 100 = 12 %

It is reduced by 12 %

A restaurant what is quantitative and flower Child towers the ratio of the number of corn to tell us to the number of flour tortillas is fortified what is the measure of the number of how to tease to the total number of tortillas I know it’s a lot but plz help

Answers

Answer:

i belive it is 2:5

Step-by-step explanation:

this is because 2 and 3 represent both the corn and flour the sum is the total

if anyone answer this question correctly will get 100 points and a marked brainllest at 1:02 just add me and answer below and its yours.

Answers

Answer:

okk thanks for free points

.............

Answer:

1. -2

2. -3

3.

a. 155x+375 >= 900

b. x>=3.38709677. or technically >=4 because you get payed at the end of a week?

Step-by-step explanation:

1. (y-y)/)x-x)

2. same thing

3 a. 155 is the rate, 375 is the starting value

b. subtract 375, divide by 155

What is the value of 80 + 57

Answers

137

have a good day. hope i helped

Answer:

137

Step-by-step explanation:

Add 80 and 57.

HELP PLEASE! I need helpppp!! :(

Answers

The equation has the greatest slope!

Hopeful it’s correct! sorry i’m not a genius:)
A I think is correct but double check that I’m not sure

The value of a professor basketball players autograph rose 30% in the las year.It is now worth $286.00. What was it worth a year ago

A. $210.00
B. $230.00
C. $200.00
D. $220.00

Answers

Answer:

$220 dollars

Step-by-step explanation:

a = p * w (the percentage formula)

subsitute. It rose by 30 % since last year so you're going to put 1.30 (30% -> 0.30 then add 1)

286 = 1.30 * w

solve.

w = 220

PLS HELP DUE SOON ILL GIVE BRAINLIEST

Answers

Answer:

a = w/p

Step-by-step explanation:

To take a out of the fraction, we can multiply both sides by a to get ap = w. Now, we divide both sides by p to get a = w/p.

Answer:

a = w/p

Explanation:

Step 1: Multiply both sides by a.

ap = w

Step 2: Divide both sides by p.

ap/p = w/p

a = w/p

Find the area of the polygon.

Answers

Make a box thats 32x20
32x20=640 square ft for box 1
For box 2 ||
40-32= 8
16x8= 128 square ft for box 2
For triangle 3
20-16=4
Has dimensions of 8x4|| divide by two to the t the area of a triangle
(8x4)/2 = 16 square fr
16+128+640= 784 square ft total

The local grocery store will purchase food items and mark them up 115%. If the wholesale price of an item was $3.50, what price will the customer pay for the item?

Answers

Answer

10.25

Step-by-step explanation:

pls mark me as brainliest its required :)

The answer to this question is 10.25

Please graph y=2/3-4.
This is about slope.
I would really appreciate it if you would help.
Thanks!

Answers

I found this for your answer
Ok so you wanna start at the y intercept, which is -4 and make a dot there. The slope is 2/3 which is y over x. So from -4, go up 2 and over to the right 3. You could also go down 2 and to the left 3 because two negatives make a positive.
Sorry the graphs so bad lol

give answer fast...
it's very important for me....
then I give you 20 thanks...(◍•ᴗ•◍)❤​

Answers

Answer:

I have the answer

Step-by-step explanation:

Answer:

the required answer is 18

Step-by-step explanation:

see the solution in attached picture

i hope u got it

a factory could produce 84 toy robots in one day. They purchased some new equipment. Now they can produce 105 robots in one day. what is the percent gain?

Answers

Answer:

The answer to the question is

25 % increase in production rate

Step-by-step explanation:

To solve the question, we note that

Initial number of products = 84 toy robots per day

Present production rate = 105 robots per day

The percentage increase is given by the increase in production rate divided by the original production rate multiplied by 100  

Where increase in production rate = 105 - 84 = 21

Percentage increase = 21/84 ×100 = 25 % increase

Are the two ratios equivitant? Explain your reasoning. The ratios of boys to girls is 5 to 2. The ratio of girls to boys is 2:5​

Answers

Answer:

Yes

Step-by-step explanation:

The order is switched from boys to girls(5 to 2)to girls to boys (2 to 5).

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