Mathematics High School

Solve the system of equations by substitution.
y=3x-10, 2x+3y=14

Its 5-3 MathXL btw​

Answers

Answer 1
2x+3(3x-10)=14

2x+9x-30=14

11x=44

x=4


y=3(4)-10

y=2

Related Questions

Simplify 6/18
pls help thx

Answers

Answer:

1/3

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

There are 25 questions on a test. The maximum grade you can earn is 100, and for each question missed, 4 points are taken away. The final
grade is a function of how many problems missed on the test.
Part A: Write an equation to describe this scenario:
Part B : Tell what type of function
Part C: describe the domain
Part D: describe the range

Answers

Answer:

The answer is Part B I think. I'm not fully sure, but it sounds much more logical in my opinion.

Step-by-step explanation:

Part A: F(x) = 100 -4x

Omar is planning to buy some new baseball shoes. He has already saved $22.50 The shoes cost at least $38 dollars. He writes an inequality to determine how much more he will need to save

Answers

Answer:

At least $15.50

Step-by-step explanation:

Omar is planning to buy some new baseball shoes. He has already saved $22.50

The shoes cost at least 38 dollars.

At least means, greater than or equal to which is represented by the sign

≥

The inequality is given as

22.50 + x ≥ 38

x ≥ 38 - 22.50

x ≥ 15.5

Therefore, he would need to save at least $15.50

Subtract and simplify the expression. (14m + 3) − (34m + 15)

Answers

the answer to this is -20m -12 ( sorry if it's wrong )

Mark wants to round to the nearest hundred to estimate the sum of 271 and 582.
He wrote 270 + 580 = 850.

Part A
What mistake did Mark make?
A.
00:00



Mark should have rounded 271 to 250 and rounded 582 to 550: 250 + 550 = 800.
B.
00:00



Mark should have rounded 271 to 250 and rounded 582 to 600: 250 + 600 = 850.
C.
00:00



Mark should have rounded 271 to 300 and rounded 582 to 500: 300 + 500 = 800.
D.
00:00



Mark should have rounded 271 to 300 and rounded 582 to 600: 300 + 600 = 900.
00:00

Part B
What is the sum of 271 and 582 rounded to the nearest hundred?
A. 300
B. 850
C. 900
D. 1,000

Answers

Answer:

Step-by-step explanation:

Part A:

Mark did not round to the nearest hundreds, he rounded to the nearest tens.

Option A (Incorrect):

271 and 582 are normally not rounded down, unless we are using limits coming from the left and a unique equation.

Option B (Incorrect):

271 as the same problem as option A, but 582 rounding to 600 is correct. It doesn't make sense to round both numbers differently, unless stated.

Option C (Incorrect):

271 rounding to 300 is correct, but 582 is not normally rounded down to 500 unless we are using limits coming from the left and a unique equation. Unless stated, don't round both numbers differently.

Option D (Correct):

271 rounded to 300 and 582 rounded to 600 looks correct for rounding to the hundreds.

Part B:

There are two ways to solve this question:

One way:

271 + 582 = 853

Round 853 to the nearest hundred for 900

(Note: Round 853 to the nearest tens for 850.)

Second way:

271 + 582

Round Numbers:

300 + 600

= 900

- Find the perimeter of the figure.
R(3,4)
S(-8,1)
T(1,-2)

Answers

i think its 8.2 im not sure

What is the factored form of x^2+9x+20

Answers

x^2+9x+20

-9+-√(9)^2-4(20)/2

-9+1/2 , -9-1/2

-8/2 , -10/2

-4,-5

Answer:

(x+4)(x+5)

Step-by-step explanation:

Let's factor x2+9x+20

x2+9x+20

The middle number is 9 and the last number is 20.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Addd together to get 9

multiply together to get 20

Can you think of the two numbers? hmmmmmm :D

Try 4 and 5:

4+5 = 9

4*5 = 20

Fill in the blanks in

(x+_)(x+_)

with 4 and 5 to g.et...

(x+4)(x+5)

Hope this helps :D

Find the area of a patio shaped like the figure shown below with a length of each square equal to one meter. Please answer asap. I will give brainliest.

Answers

Answer:If my calculations are correct and my rounding I would show you my work but I cant upload the picture but I think about

38

Step-by-step explanation:

I=Hope I helped if so can I please have brainliest :)

Answer:

39

Step-by-step explanation: i dont know i just got a 100 on the worksheet

PLEAS HELP ILL GIVE BRAINLIEST
PLEASE SHOW WORK

Answers

Answer: its A

Step-by-step explanation:

Answer:

the answer is

13 / 40 = 32.5%

Dinos diner charges 4$ for each sandwich. Carlas cafe charges 8$ for each sandwich write the total costs of 1 2 3 and 4 sandwiches for each restaurant. Then compare the total cost of 4 sandwiches at each restaurant

Answers

Answer:

Carla's Cafe charges more than Dino's dinner for 4 sandwiches because

$32 > $16

Step-by-step explanation:

what is 6 x 3/5.................................................................................................................

Answers

Answer

3.6

Step-by-step explanation:

3/5 is equal to .6 so multiply 6x.6

PLEASE HELP ASAP PRE ALG. 20 POINTS!!!!!

Answers

Answer:

0.5/3 or 16.67

Step-by-step explanation:

Slope is y 2 minus y 1 / x 2 minus x 1.

1-0.5/6-3

0.5/3

0.5/3 hbgghhhvvvhbggg

helppppppppppppp plzzzzzzzzz

Answers

Answer:

9825

Step-by-step explanation:

Use the order of operations to simplify

2^3 + 6

1. 19
2. 18
3. 14

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{2^3 + 6}[/tex]

[tex]\mathsf{2^3 = 2\times2\times2 = 4\times2=\bf 8}[/tex]

[tex]\mathsf{\bf 8}\mathsf{\ +\ 6}[/tex]

[tex]\mathsf{\bf = 14}[/tex]

[tex]\boxed{\boxed{\large\textsf{Answer: \huge \bf 14}}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

What to say back if someone says that you’re skinny

Answers

Answer:

ok and?

Step-by-step explanation:

1.
[tex]16 \frac{3n}{4} \div 18 \frac{5n}{4} \times {4}^{n + 2} [/tex]
simplify

2.
[tex] {2}^{2y} = 6( {2}^{y)} - 8[/tex]
Find the value for y

3.
[tex] {2}^{2x + 1} - 15( {2}^{x}) - 8 = 0[/tex]
Solve the equation
​

I will mark you brainliest

Answers

Answer:

1.  (5n^2 x4^n+2)/ 6

2. y=1 y=2

Step-by-step explanation:

Why is this question stumping everyone i meet.

Answers

Answer:

i dont know anything about simplest radical form but this is the length 17.32051

Step-by-step explanation:

Plz show your work.

Answers

A ....................

Find the slope of the following line please thank you.

Answers

Answer: Slope is 3

Step-by-step explanation:

how many sec are in 1 year ?

Answers

Answer:

31536000 seconds

Step-by-step explanation:

The asnwer is 31536000 seconds.

GUYS I NEED HELP ON THIS ASAP!! PLS PLS PLS PLSSSSSS. tysm to anyone who help me thx

Answers

Answer: D the chef answers the inequality incorrectly and makes a mistake between the Given and Step 1

Answer:

D) the chef answers the inequality incorrectly and makes a mistake between the Given and Step 1

Step-by-step explanation:

You can't add two numbers when one has a variable

7h + 45 > 143

7h > 98

h > 14

this would be the correct form

-6y=-4x+24 use intercepts to graph the line described by each equation

Answers

it’s y intercept is -14 and crosses the x axis at 6

Which expression is equivalent to the expression below?
7x+5y+x+x+x+x

Answers

Answer:

11x+5y

Step-by-step explanation:

7x+5y+x+x+x+x

Combine like terms

7x+x+x+x+x  +5y

11x  +5y

PLEASE HELP ME PLEASEEEEE

Answers

___________________________________________________________

Crab Rave

___________________________________________________________

Help me please i just need help

Answers

Answer:

X (37) < Y (45)  

i hope this helped you :)

Step-by-step explanation:

Examine the system of equations. Which is an equivalent form of the first equation that when added to the second equation eliminates the y terms? Negative StartFraction 5 Over 8 EndFraction x + three-fourths y = 12 8 x + 12 y = 11

Answers

Answer:

10x - 12y = 192

Step-by-step explanation:

Given the equation :

-5/8x + 3/4y = 12 - - - (1)

8x + 12y = 11 ___(2)

The equivalent form of the first equation which can eliminate the y term :

Multiply (1) by - 16 :

-5/8x * - 16 + 3/4y * - 16 = 12 * - 16

10x - 12y = 192

Hence, Adding the obtained equation and equation(2) will eliminate.

3) Given:
Find the measure of arc WV.

Answers

Answer:

108°

Step-by-step explanation:

Detail attached

Which ratio is smaller, 32 : 24 or 30 : 22?​

Answers

Answer:

32 : 24 is smaller

Step-by-step explanation:

32 : 24 = 32/56, reduced is 4/7

30 : 22 = 30/52, reduced is 15/26

a common denominator is 182:

4/7 = 104/182

15/26 = 105/182

32:24 -> 30:22

You need to get one number from each ratio to be equal

I’m gonna get 32 and 30 to equal

*first divide both ratios by 2(don’t have to do this just makes the no.’s smaller)
32:24
16:12

30:22
15:11

Multiply 16:12 by 15
And multiply 15:11 by 16

32:24 -> 16:12 -> 240:180
30:22 -> 15:11 -> 240:176

176<180
Therefore ratio 30:22 is smaller

List 3 values that would make this inequality true.

2n≥ 12

Answers

Answer:

Answer may vary. e.g. 6, 7, 8

Step-by-step explanation:

n≥6

Pick any number from the range [6, + infinity)

Which linear function is graphed on the grid?
a - g(x) = 2/15x - 6
b - g(x) = 2/15x + 45
c - g(x) = 15/2x - 6
d - g(x) = 15/2x + 45

Answers

Answer:

G(x)=2/15x-6

Step-by-step explanation:

The linear function graphed on the grid will be g(x) = (15/2) x + 45. Then the correct option is D.

What is a linear equation?

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

x/a + y/b = 1

Where 'a' is the x-intercept of the line and ‘b’ is the y-intercept of the line.

From the graph, the x-intercept is - 6, and the y-intercept is 45. Then the equation is given as,

x/(-6) + y/45 = 1

- 15x + 2y = 90

y = (15/2) x + 45

g(x) = (15/2) x + 45

The linear function graphed on the grid will be g(x) = (15/2) x + 45. Then the correct option is D.

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ2

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