Mathematics High School

Need help with this please answer :( I’m not good at math at all
5x + 4y = -7
-5x - 2y = 1

Need Help With This Please Answer :( Im Not Good At Math At All 5x + 4y = -7-5x - 2y = 1

Answers

Answer 1

Answer:

y=-3

x=1

(1,-3)

Step-by-step explanation:

5x+4y=-7

-5x-2y=1

Cancel +5x - 5

     2y=-6

      y=-3

5x-12=-7   or    -5x+6=1

5x=5                -5x=-5

x=1                     x=1

Answer 2

Answer:

y = -3, x = 1

or

(1, -3)

Step-by-step explanation:

5x + 4y = -7

-5x - 2y = 1

add the two equations together

0x + 2y = -6

2y = -6

2y/2 = -6/2

y = -6/2

y = -3

now substitute y = -3 into either of the equations

5x + 4y = -7

5x + 4(-3) = -7

5x - 12 = -7

5x = -7 + 12

5x = 5

x = 1

Related Questions

Can somebody help me? Will mark brainliest.

Answers

Answer:

4

Step-by-step explanation:

Given the triangle AEC - trianhle BED the 4th equation, ED/EC = AC/BD is true.

HELP FAST I'LL MARK YOU BRAINLIEST

Answers

Answer:

y = -2x + 12

Step-by-step explanation:

Step 1: find the slope

y = 1/2x + 5

The equation of the line is

y = mx + c

m - slope

m = 1/2

Note : if two lines are perpendicular to the other, both lines are negative reciprocal of each other

m = -2

Step 2 : using a point slope form

y - y1 = m( x - x1)

( 2 , 5)

x1 = 2

y1 = 5

y - 2 = -2( x - 5)

y - 2 = -2x + 10

y = -2x + 10 + 2

y = -2x + 12

The equation of the line is

y = -2x + 12

I dunno the answer so I just found another answer I found in here for this question:P

Sorry- it’s useless

Jerome bought a pair of the new UGG boots for men that was on sale for 30% off the original price of $129.95. Which is closest to the sale price of the pair of shoes?

Answers

Answer:

$90.98

Step-by-step explanation:

What is a common denominator for 1/7 and 1/3?

a 18
b 21
c 3
d 4

Answers

Answer:

B. 21

Step-by-step explanation:

The fractions are there to just make the problem seem complicated, but just rewrite it without the fractions.

"What is a common multiple for 7 and 3?"

In this problem it's easy, all you have to do is guess and check.

A: A doesn't work. 7 is not a factor of 18.

B: B works! Both 3 and 7 are factors of 21.

C: C doesn't work. 7 is not a factor of 3.

D: D doesn't work. Neither are a factor of 4.

They only leave us with one solution, B.

whats 3^2? thank you.

Answers

Answer:

9

Step-by-step explanation:

3*3

3^2 is the same as 3 times 3, so it’s 9

please help me please will give its about negative numbers ​

Answers

B) x > -3

The number line shows the dot on -3, and it is not shaded, which means that x is not equal to that number. The, the line continues into -2 and so on. This numbers are greater than -3.

So, x is greater than -3.

Answer:

D. x>-3

Step-by-step explanation:

Since the dot on -3 is not shaded in we know it is not ≤ or ≥ so option A and C are eliminated.

Remember if the arrow is pointing to the left (<-----) Then it is Less-than which is <.

If the arrow is pointing to the right (----->) Then it is Greater-than which is >.

Since the arrow is pointing right the answer will be x>-3 which is D

A department store is having a “half price” sale. Which is equivalent to “half price”?

a 21

B 0.05

D 50%

C 0.5%
HELPPP MMEEEE

Answers

Answer:

d. 50%

Step-by-step explanation:

Calculate the force when the pressure is 18 N/M squared and the area is 4 M squared.

Answers

The force is 72 Newton

Quickkk please help and how all work

x=3y-1
3x+4y=10

Answers

Answer:

y=1, x=2

Step-by-step explanation:

so first solve for y. plus x=3y-1 into the other equation.  

so 3(3y-1)+4y=10.  

Simplify

9y-3+4y=10           Add 3 to both sides

9y+4y=13               Add

13y=13 .                  Divide 13 from both sides

y=1

Plug 1 into the first equation.  

x=3(1)-1

x=3-1

x=2 and y=1

Point A is located at (-5, -3.5). Point B is located at (-5, 1). What is the distance between point A and point B?(THERES NO PICTURE)

Answers

Answer:

how we go answer it

Step-by-step explanation:

PLEASE HELP ILL GIVE BRAINLIEST Which equation choice could represent the graph shown below?

Answers

Answer:

A,   x(x-4)

Step-by-step explanation:

None of them will give you the vertex you want but the x intercepts are only correct for A

Answer:

Its The Bottom Right one I think D

Step-by-step explanation:

Hi, Can you please help.​

Answers

1: 9/28

2: 1 2/3

3: 28 4/5
i. 9/28
ii. 1 2/3
iii. 28 4/5

A copy machine can print 340 color copies every 8 minutes. So how many copies can be made 28 minutes

Answers

Answer:

1190

Step-by-step explanation:

We have the ratio: 8:340 which means that 340 copies are printed in 8 minutes

We want to find out how many color copies are printed in 1 minute so we divide by 8

so our new ratio is now 1:42.5

We now multiply this ratio by 28 to find out how many are printed in 28 minutes

28:1190

our answer is 1190 copies

Sam has to pay a 15% tax on a boat that cost him $500. He believes he can determine the tax he owes using the calculation: 15 x 5

Answers

Answer:

$75

Step-by-step explanation:

Cost = $500

Sam has to pay a 15% tax

To compute his tax, we use the step outlined bellow

tax= 15/100*500

tax= 0.15*500

tax=$75

Hence his tax is $75

What is 0.77 as a percent?

Answers

Hey there! [tex]\bold{Equation: \dfrac{0.77}{1}\times\dfrac{100}{100}}\\\bold{\dfrac{0.77}{1}=0.77\div1= \underline{0.77}}\\\bold{\dfrac{100}{100}=100\div100=\underline{1}}\\\bold{0.77 \times 100 = \underline{77}}\\\\\\\boxed{\boxed{\bold{Answer: \underline{77\%}}}}\huge\checkmark\\ \\ \\ \\ \\ \\ \bold{Good\ luck\ on\ your\ assignment\ and\ enjoy\ your\ day!}\\\\ \frak{LoveYourselfFirst:)}[/tex]

A farm stand sells oranges in 3-lb bags for $3.75. What equation represents the cost, c, for p pounds of oranges?

A) c = 1.25p
B) p = 1.25c
C) c = 3.75p
D) p = 3.75c

help pls

Answers

It’s A because it’s cost 1.25 per pound so 1.25(P) and c being the cost so C=1.25(p)

solve for the missing side

Answers

Answer:

7.28011

Step-by-step explanation:

a² + b² = c²

7² = 49

2² = 4

49 + 4 = 53

√53 = 7.28011

Answer:

Step-by-step explanation:

2^2+b^2=7^2

4+b^2=49

b^2=45

b= 6.708

2+2 help me I am in first grade and this is my homework and I don’t know it

Answers

Answer:

2+2=4

Step-by-step explanation:

find the value of x in the triangle below​

Answers

Answer:

87 degrees

Step-by-step explanation:

the three angles of a triangle add up to one hundred eighty degrees.

1. Add the degrees of the known angles together

56 + 37 = 93

2. Since a triangle adds up to one hundred eighty degrees, you would subtract your known degrees from the total

180 - 93 = 87

HELP
A movie theater is arranged with 7 seats in the front row, 12 seats in the middle row, and 11 seats in the back row. People enter the movie theater and randomly sits in different spots. What is the probability that the first person who enters the theater will be in the middle row?


type in your fraction answers as a/b

Answers

Answer:[tex]P=\frac{2}{5}[/tex]

Step-by-step explanation:

Given

A movie theater has 7 seats in the front row  

12 seats in the middle row

11 seats in the back row

Probability first person who enters the theater will be in the middle row

[tex]P=\frac{\text{No. of middle seats}}{\text{total seats}}[/tex]

[tex]P=\frac{12}{7+12+11}=\frac{12}{30}[/tex]

[tex]P=\frac{2}{5}[/tex]

What is −2x−6y= 6 in slope-intercept form?

Answers

Answer:

y=1+1/3x

Step-by-step explanation:

7. Use substitution. What is the
solution of the system of
equations?

y = -4x + 11
8x + 2y = 14

A. X = 6, y = 7
B. x = 6, y = -7
C. Infinitely many solutions
D. No solution


PLEASE HELP AND PLEASE LOOK AT THE OTHER QUESTIONS I ASKED

Answers

Answer:

No solution, D

Step-by-step explanation:

If you rewrite the second one to be the y=mx+b form then you get

8x-14= -2y

Divide by -2 and get

-4x+7=y

Because the slopes are the same the lines will never intersect which means there is no solution

What happens if the length of the
hypotenuse is missing?
• We can solve for the length of
the hypotenuse
• Let's use the Pythagorean
Theorem
a?+ b2 = c2
2222
3
Solve:
5

Answers

Answer:

c² = 34

Explanation:

Pythagorean Theorem: a² + b² = c²

Insert 3 and 5 into the equation

3² + 5² = c²

Simplify

3² = 9

5² = 25

9 + 25 = 34

34 = c²

- PNW

Answer:[tex]\boxed{\boxed{\sf~c^2=34}}[/tex]Solution Steps:

______________________________

1.) To find c, you must fill in the formula:Formula: [tex]a^2+b^2=c^2[/tex][tex]a^2=3^2[/tex][tex]b^2=5^2[/tex]

 - When finding c, it doesn't matter what you put for a or b. So if you want to make a = 5, and b = 3, it wouldn't make any difference.

2.) Find the powers of a and b:[tex]3^2=9[/tex][tex]5^2=25[/tex]

3.) Add a and b together:[tex]9+25=34[/tex]

______________________________

Solve: 11-x=x-3 pls help quicky​

Answers

Answer:

x=7

Step-by-step explanation:

11+3=14, x+x=2x, divided by two, x=7

7=x

Hope this helps!!!

NEED HELP ASAP PLZ!!!!!!!!
Jessica runs between 3 and 7 miles per day. It takes Jessica 12 minutes to run one mile. What is a reasonable amount of time that Jessica spends running every day?
A.
36 minutes
B.
120 minutes
C.
84 minutes
D.
60 minutes

Answers

Answer:

120

Step-by-step explanation:

F(x)=-x^3+24x^2-179x+495 determine the
Average rate of change of f(x) between x=2 and x=5

Answers

Answer:

The average rate of change is -75

Step-by-step explanation:

The Average Rate of Change (ARC)

It's a measure of how much the function changed per unit, over a given interval.

Given a function F(x) and an interval between x=a and x=b, the average rate of change is:

[tex]\displaystyle A=\frac{F(b)-F(a)}{b-a}[/tex]

The function is:

[tex]F(x)=-x^3+24x^2-179x+495[/tex]

and it's required to find the ARC between x=2 and x=5.

Calculate F(2) and F(5):

[tex]F(2)=-2^3+24*2^2-179*2+495=225[/tex]

[tex]F(5)=-5^3+24*5^2-179*5+495=75[/tex]

The ARC is:

[tex]\displaystyle A=\frac{75-225}{5-3}=\frac{-150}{2}=-75[/tex]

The average rate of change is -75

Work out 1/3 of 0.25 of 48% of £340

Answers

Answer:

0.083

163.20

Step-by-step explanation:

Professional chefs usually measure ingredients by weight
rather than by volume. A recipe calls for 2 ounces of
flour for every 3 ounces of sugar. If you are a chef and
you use 12 ounces of sugar, how many ounces of flour
should
you
use?

Answers

The answer is 8.
Reason is because if they used 12 ounces that means they multiplied the ratio 2:3 by 4 so the sugar is 12. By doing that you’d also have to multiply 2 by 4 so that the ratio stays even. So it went from 2:3 to 8:12. Sorry if that doesn’t make sense.

The seventh grade class is putting on a talent show to raise money for a class trip. It costs $500 to rent the banquet hall they are planning on using. If they charge $15 per ticket, how many tickets do they need to sell in order to raise at least $1000? Part A The variable in this problem will represent the number of Part B Choose the correct inequality to represent the story problem​

Answers

Answer:

Part A; 15x

Step-by-step explanation:

Part A; 15(67)

= $1005

Part B; ??

The number of tickets to be sold if, The cost of the banquet hall is $500, The cost per ticket is $15, the Total money to be raised is $1000, is 67, and the equation is given by 1000 = 15x.

What is the equation?

Equation: A declaration that two expressions with variables or integers are equal. In essence, equations are questions and attempts to systematically identify the solutions to these questions have been the driving forces behind the creation of mathematics.

In other terms, it is a mathematical statement stating that "this is equivalent to that."

Given:

The cost of the banquet hall = $500,

The cost per ticket = $15,

Total money to be raised = $1000

Write the equation of the number of tickets as shown below,

1000 = 15x

Here, x is the number of tickets,

x = 1000 / 15

x = 66.67 or 67

To know more about equation:

https://brainly.com/question/12788590

#SPJ2

The parallelogram shown represents a map of the boundaries of a natural preserve. Walking trails run from points A to C and from points B to D. The measurements shown represent miles. Parallelogram A B C D is shown. Diagonals are drawn from point A to point C and from point D to point B and intersect at point E. The length of D E is y + 2, the length of E B is 3 y minus 4, and the length of E C is 2 y minus 3. What is the sum of the lengths of the two trails? 6 miles 12 miles 16 miles 36 miles

Answers

Answer:

[tex]16\ \text{miles}[/tex]

Step-by-step explanation:

In a parallelogram the diagnols bisect each other. So,

[tex]DE=EB\\\Rightarrow y+2=3y-4\\\Rightarrow 4+2=3y-y\\\Rightarrow 6=2y\\\Rightarrow y=\dfrac{6}{2}\\\Rightarrow y=3[/tex]

[tex]DE=y+2\\\Rightarrow DE=3+2\\\Rightarrow DE=5[/tex]

[tex]BD=2DE\\\Rightarrow BD=2\times 5\\\Rightarrow BD=10[/tex]

[tex]EC=2y-3\\\Rightarrow EC=2\times 3-3\\\Rightarrow EC=3[/tex]

[tex]AC=2EC\\\Rightarrow AC=2\times 3\\\Rightarrow AC=6[/tex]

The sum of the diagonals is [tex]BD+AC=10+6=16\ \text{miles}[/tex]

The sum of the lengths of the two trails is [tex]16\ \text{miles}[/tex].

Answer:

16  Miles

Step-by-step explanation:

Just took the quiz and got it right

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