Mathematics High School

Solve the system of equations using the method of your choice

Solve The System Of Equations Using The Method Of Your Choice

Answers

Answer 1

Answer:

(-3, -1); x = -3; y = -1

Step-by-step explanation:

-3x + 5y = 4; x + y = -4

solving via substitution

rearrange second equation: y = -x - 4

-3x + 5(-x - 4) = 4

-3x - 5x - 20 = 4

-8x -20 = 4

-8x = 24

x = -3

- 3 + y = -4

y = -1

(-3, -1)

Check

- 3 + -1 = -4

Related Questions

8. Find the cube root of 27a^3+54a^2b+36ab^2+8b^3​

Answers

The expression 27a^3 + 54a^2b + 36ab^2 + 8b^3​ has a cube root of 3a + 2b

How to determine the cube root of the expression?

From the question, the expression is given as

27a^3 + 54a^2b + 36ab^2 + 8b^3​

The above expression is the cube of the sum of two numbers or expressions

Where the numbers are

27a^3 and 8b^3​

The cube roots of 27a^3 and 8b^3​ are represented as

∛27a^3 and ∛8b^3​

Evaluate the cube roots

3a and 2b

Express as sum

3a + 2b

Hence, the cube root of the expression is 3a + 2b

Read more about cube root at

https://brainly.com/question/28716981

#SPJ1

If you wanted to shift the graph of y= 4x + 7 down, which equation could you use?

Answers

Answer:

D

Step-by-step explanation:

find the missing length indicated ​

Answers

Answer:

15

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

It is given that two lines are parallel, and hence the corresponding angles are congruent, by corresponding angles postulate. It is also given that the triangles in the photo share an angle, by the reflexive property, the shared angle is congruent. Hence one can use angle-angle to determine that the two triangles in the picture are similar.

Using this, one can set up a proportion with the sides. The ratios of any two corresponding sides are the same as any other two corresponding sides in the triangle, respectively, this is due to the corresponding parts of similar triangles theorem.

[tex]\frac{9+12}{12}=\frac{49}{49-?}[/tex]

Simplify,

[tex]\frac{21}{12}=\frac{49}{49-?}\\\\\frac{7}{4}=\frac{49}{49-x}[/tex]

Cross products,

[tex](7)(49-?) = (4)(49)\\\\343-7?=196[/tex]

Inverse operations,

[tex]343-7?=196\\-343\\\\-7? = -147\\/-7\\\\?=21[/tex]

u.s cities grew quickly during the early 1800s because:

Answers

Answer:

The industrialization of the late nineteenth century brought on rapid urbanization. The increasing factory businesses created many job opportunities in cities, and people began to flock from rural, farm areas, to large urban locations. Minorities and immigrants added to these n

Answer:

A. factories began to hire more workers in cities

Step-by-step explanation:

I got it right ap2x

Okkkkkkkkkkkkkkkkkkkkkkkkkkkk

Answers

Answer:

GCHE

Step-by-step explanation:

Answer and Explanation:

Problem 1:

4x - 12 = 16

4x = 28

x = 28 / 4

x = 7, G

Problem 2:

5x + 10 = - 25

5x = - 35

x = - 35 / 5

x = -7, C

Problem 3:

x / 2 + 11 = 12

x / 2 = 12 - 11 = 1

x = 2 * 1

x = 2, H

Problem 4:

7.5 * x + 10 = -5

x = -2, E

(Not sure about this one)

Code: GCHE

question in the picture thankss

Answers

G because you end up with the equation y= .5x+5

Lawrence has $50. He wants to buy some T-shirts that cost $12 each. He also wants to have at least $10 left to buy lunch. Which inequality shows the number of T-shirts, x, Lawrence can buy and still have at least $10 for lunch?

Answers

Answer:

x=3

Step-by-step explanation:

12 * 3 = 36

50-36=14

Hey I'm Chloe, Can you help me, Thank you :)
I need Help with Math:
-3A +2 ( 5- 2A) = - 11
* I think The answer is A= 3, But I'm not sure*

Answers

Answer:

There is no question just a equation.

Step-by-step explanation:

I'm not sure.

Answer:

You are indeed correct, A=3

Step-by-step explanation:

what is 8x > -136??????

Answers

Hope this helps

x > -17

Find the Percent:
A computer is marked up from last
year's model by 12%. If the cost last
year was $1150.00; What is the cost
of the new model?

Answers

Step-by-step explanation:

First, find 12 percent of 1,150,

12 percent of 1,150 = 138.

Now, add 1,150 + 138,

1,150 + 138 = 1,288

Hope I helped, if not, at least I tried.

GEOMETRY!!!! HELP PLS THANK U

Answers

Answer:

i think the answer is 45 degrees

Step-by-step explanation:

To compute the perimeter of a rectangle, you add the length, l , and width, w , and double this sum.

This means you can find the perimeter of a rectangle by evaluating the expression 2 (1 + w ).
Use this expression to find the perimeter of a rectangle with length 30 and width 75.
210 (A)
135 (B)
180 (C)
107 (D)

Answers

Answer:

210 (A)

Step-by-step explanation:

Use the formula:

P = 2(l + w)

Substitute the values and find P:

P = 2(30 +75) = 2(105) = 210

Correct choice is A

Answer:

given length [l]=30

width[w]=75

perimeter= 2 (l + w )=2(30+75)=210

so

answer is A.210

Use the FOIL method to check your answer from part A.

Answers

Answer:

[tex]x^{2} -8x+12[/tex] (that means u got it right)

Step-by-step explanation:

basically use the distributive property to multiply everything by each other.

x*x=[tex]x^{2}[/tex]

x*(-2) + x*(-6)= -8x

-6*-2=12

Put it all together and u get the original.

Sorry if this is confusing.

Add these two Fractions together: 1 and 3/4 + 5/8

Answers

Answer:

11/8

Step-by-step explanation:

3/4=6/8

6/8+5/8=11/8

Solve for 1 and 3/4 + 5/8

= 7/4 + 5/8
= 14/8 + 5/8
= 19/8
= 2 and 3/8


[tex]x^{2} + 36x + 324 = (x + m)^{2} [/tex]
which of the following is the value of m?
A. 36
B. 18
C. 12
D. 6
​

Answers

Answer:

B. 18

Step-by-step explanation:

[tex]x^{2} + 36x + 324 = (x + m)^{2} [/tex]

[tex](x+18)^{2}= (x + m)^{2} [/tex]

[tex]\cancel x+18= \cancel x + m[/tex]

[tex]18= m[/tex]

This answer to this question is B


Find the measure of all the indicated angles.
Help please !!

Answers

The answer is 540 bc no three sides are congruent

Please help me! Does ∡JLK = 102° ?

Answers

Answer:

36+102=138  180-138=42  

Step-by-step explanation:

sorry i berly learning this ... i suck ... plz someone help this kid

130% of 49 =
O 637
O 6.37
O 63.7
0 63.7%

Answers

the answer would be 36.78 don’t know what these answer choices are
the answer to this question is c. 130% of 49= 63.7

A rectangular prism and its dimensions are shown in the diagram.
1
6.5 in.
3.2 in.
8.2 in.

Answers

Answer:

148.2

Step-by-step explanation:

LA= PH

P= 8.2+8.2+3.2+3.2=22.8 in

H= 6.5 in

PH= 22.8(6.5)= 148.2 in

Did I put the letters in the right places?

Answers

Answer:

Yes u did thats what i did too XD

What is the name of this solid figure?

Answers

Answer:

the picture isn't whole, but what I see is a cylinder.

Step-by-step explanation:

Answer this problem

Answers

Answer:

(3,-7)

(-8,48)

(-4,28)

(8,-32)

(-3,23)

Step-by-step explanation:

To solve, just put in the x value from the table as the x value in the equation. Then solve to get y.

Hope it helps!

solve for x −7.8(x+6.5)=−25.74

Answers

Answer:

the correct answer is x= -312/85

area of rhombus whose diagonals are 9cm and 4cm is​

Answers

Answer:

18 cm²

Step-by-step explanation:

you simply take (d1 × d2) / 2

and there you have it : )

(d = diagonals)

What is 5% of $37.95

Answers

$36.05
Hope I helped

Answer:

$1.90

Step-by-step explanation:

I think so sry if I'm wrong

boom roasted

4-5|6-4x|=-16
Help please

Answers

Answer:

-3/10

Step-by-step explanation:

4-5(6+4x)=-16

4-30-20x=-16

-26-20x=-16

-20x=-16+26

-20x=6

x=6/-20

x=-3/10

Answer:

x = -2

Step-by-step explanation:

4 - 5 x 2x = -16

4 - 10x = -16

10x = -20

x = -2

Hope that helps!

Write in Slope Intercept form

Answers

Answer:

y=5/2x

Step-by-step explanation:

the y intercept is (0,0) so it isn't included in the equation. now we know the middle solution isn't correct. the points we use to find slope are (-2,-5) and (2,5) which ends up being 5/2.

If m/ 6=30 what is m / 7?

Answers

Answer:

30 degrees because it is alternate to 30 degrees

Step-by-step explanation:

Answer : D.

Explanation : angle 6 and angle 7 are vertical angles, which are congruent. since angle 6 measures 30 degrees, angle 7 must also measure 30 degrees.

Using the function s = 13.50 which statement is true

A. The dependent variable is s
B. The dependent variable is h
C. the independent variable is s
D. the independent variable is 13.50

Answers

C. The independent variable is s

Answer:

A the dependent variable is s

Step-by-step explanation:

This is the correct answer from the review page.

what is g in this problem 4-(9g-5)=-18​

Answers

Step-by-step explanation:

Let's solve your equation step-by-step.

4−(9g−5)=−18

Step 1: Simplify both sides of the equation.

4−(9g−5)=−18

4+−1(9g−5)=−18(Distribute the Negative Sign)

4+−1(9g)+(−1)(−5)=−18

4+−9g+5=−18

(−9g)+(4+5)=−18(Combine Like Terms)

−9g+9=−18

−9g+9=−18

Step 2: Subtract 9 from both sides.

−9g+9−9=−18−9

−9g=−27

Step 3: Divide both sides by -9.

−9g−9=−27−9

g=3

g = 3
Hope this helps!
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