Solve systems using substitution PLEASE

Solve Systems Using Substitution PLEASE

Answers

Answer 1
x=5. y=35.

To solve, substitute the 7x into the equation for y. Solve. You get x=5. Then put that into your first equation. Solve. You get y=35. Hope that helps!!

Related Questions

In a fish tank, there are 9 bluefish and 7 redfish.
How many fewer redfish than bluefish are there?

Answers

Answer:

arkadaşlar bu şeyler

Türkçeye nasıl cevriliyor

There are 2 fewer redfish than bluefish

9-7=2

I need help pleas!
Complete the table for the given rule.
Rule: y is less than 2 times x
x y
2
3
4
(I need to know what y is)

Answers

i think it might be 4,8,or 12

Nijah saves $15 per week to purchase a video game system that costs $350. Which equation represents the amount of money, s, Nijah still needs to save after w weeks?

Answers

350-15w= x
Total cost - money saved per week = how much is still needed

Write the following numbers in order of size start with the smallest. 0.32 0.4 0.35 0.309

Answers

Answer:

Hey!

0.309<0.32<0.35<0.4

hope this helps you

The numbers in order of size start with the smallest can be done as 0.309 < 0.32 < 0.35 < 0.40.

What are Decimal Numbers?

The decimal numeral system is the most widely used system for representing both integer and non-integer values. It is the Hindu-Arabic numeral system's expansion to non-integer numbers. Decimal notation is the method of representing numbers in the decimal system.

The given number can be arranged from smallest to largest can be arranged as shown below. Therefore, we can write,

0.309 < 0.32 < 0.35 < 0.40

Hence, the numbers in order of size start with the smallest can be done as 0.309 < 0.32 < 0.35 < 0.40.

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when will I have to use factoring in real life

Answers

ANSWER:

dividing something into equal pieces, exchanging money, comparing prices, understanding time and making calculations during travel.

5(x + 1)=20
5x+1=20
????? ASAPPPP

Answers

So for this equitation the answer is X=4

Answer:

x=3

Step-by-step explanation:

5(x+1)=20

5x+5=20

-5 -5

5x=15

now just divide 5 from 15 which is 3 so x=3

One more
will give brainliest

Answers

Answer:

The answer is 60 degrees

Step-by-step explanation:

Which equation represents a line that passes through (2, -1/2) and has a slope of 3?
A) y-2=3(x+1/2). B)y-3=2(x+1/2)
C)y+1/2=3(x-2)
D)y+1/2=2(x-3)

Answers

Answer:

C

Step-by-step explanation:

The line passes through the point (2, -1/2) and has a slope of 3.

We can use the point-slope form, given by:

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

Where (x₁, y₁) is a point, and m is the slope.

Let (2, -1/2) be (x₁, y₁). We will substitute 3 for m. Therefore:

[tex]\displaystyle y-\Big(-\frac{1}{2}\Big)=3(x-(2))[/tex]

Simplify:

[tex]\displaystyle y+\frac{1}{2}=3(x-2)[/tex]

Therefore, our answer is C.

Can someone help me please

Answers

Answer

43

Step-by-step explanation:

how do I find it ? Help me please

Answers

Answer:

14x² + 41x + 15

Step-by-step explanation:

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

Determine the dimensions of a rectangle whose area is 54 units2 and whose side lenghs are (x + 1) and (x – 2).
Answer-:
6 and 9

8 and 7

8 and -7

3 and 18

Answers

the answer is 8 and -7!!!!!!! it’s the 3rd option.

answer the questions below

Answers

1= 96 in squares
2=$45.50

1. Which of the following ratios is
not equivalent to the other three?

A 2/3
B 4/5
C 4 to 6
D 8 to 12

Answers

Answer:

B

Step-by-step explanation:

Because 2/3 times 2 = 4 to 6 = 8 to 12 if you multiply it by 2 you both of them except for 4/5 so the answer is B.

Can I be marked brainliest

In an election, 7/20 of the voters voted for a new school tax. What is the probability that a randomly selected voter did not vote for the tax? Express your answer as a percentage.

Answers

Answer:

65%

Step-by-step explanation:

so there were 20 total voters. 20-7 = 13 that did not vote for the tax

13/20= . 65 = 65%

What is the slope of a line perpendicular to line B?

Answers

10/4 I think
And simplified would be 5/2

help me.....

given condition A+B+C=180/2

prove that:
(sin2A+sin2B+sin2C)/(sin2A+sin2B-sin2C)=cotAcotB​

Answers

Answer:

The answer is in Picture.

Step-by-step explanation:

Hope it is helpful....

Answer:

hope it's helps you have a great day keep smiling be happy stay safe

I need help ok I need to find the length of ab

Answers

I think you forgot to add a picture

Suppose f(x) = x2 and g(x) = Which statement best compares the graph of g(x) with the graph of f(x)?​

Answers

Answer:

g(x) is horizontally stretched by a factor of 1/5

Step-by-step explanation:

Given

[tex]f(x) = x^2[/tex]

[tex]g(x) = (\frac{x}{5})^2[/tex]

Require

Determine the relationship between f(x) and g(x)

[tex]f(x) = x^2[/tex]

[tex]g(x) = (\frac{x}{5})^2[/tex]

Express g(x) in terms of f(x)

[tex]g(x)=f(\frac{x}{5})[/tex]

This can further be simplified as:

[tex]g(x)=f(\frac{1}{5}x)[/tex]

When a function is represented as:

[tex]g(x) = f(cx)[/tex]

Where c < 1,

Then the type of translation is a horizontal stretch (stretch in the x direction)

By comparison: [tex]g(x) = f(cx)[/tex] and [tex]g(x)=f(\frac{1}{5}x)[/tex]

[tex]c = \frac{1}{5}[/tex]

This means that: g(x) is horizontally stretched by a factor of 1/5

The domain of a function is the set of all negative number. Which quadrant could the function be located in? Select two that apply .

Answers

Answer:

Quadrant 2 and Quadrant 3

Step-by-step explanation:

Given

Set of all negative numbers

Required

Determine the quadrant it falls

Domain implies that we list the possible x values.

There are 4 quadrants and the x values in each quadrant are:

First quadrant: x is positive

Second quadrant: x is negative

Third quadrant: x is negative

Fourth quadrant: x is positive

From the above lists, we can see that x is negative in the second and the third quadrants.

what is 50% of 70
what is 92% of 19

Answers

Answer:

Step-by-step explanation:

50% of 70=35

92% of 19= 17.48

Each pair of triangles is similar Find the value of x

Answers

Answer:

x=5

Explanation:

5x-15=10

Answer:

x = 7

Step-by-step explanation:

You need to figure which sides correspond and set up the proportions

Labeling the vertices of the triangles would help you.

I did that and found that 5x - 15 ↔ 10 since both of those sides are opposite the 42° angles and 36 ↔ 18

So [tex]\frac{5x - 15}{10} = \frac{36}{18\\}[/tex]

18(5x - 15) = 10(36)

90x - 270 = 360

90x = 630

x = 7

Inscribed angles
Please help!!!!!!!! With explanation!!!!!

Answers

Answer:

a = 72° b = 88°

Step-by-step explanation:

We know in the cyclic quadrilateral opposite angles are supplementary so

a + 108° = 180° { being opposite angles of cyclic quadrilateral }

a = 180° - 108°

a = 72°

b + 92° = 180° { being opposite angles of cyclic quadrilateral }

b = 180° - 92°

b = 88°

Please answer this. Please and thank you.

Answers

Answer:

As you can see, the -4 and -1/4 coefficient values are automatically different, and will resultantly produce different answers in the solutions.

The solutions are related, as the two numbers are reciprocals, as well as both being negative values.

Hope this helped !

A countertop is 15 feet long and 8 feet wide.
Part 1 out of 2
What is the area of the countertop in square meters? Use the conversion 1 foot = 0.305 meter. Round your
final answer to 2 decimal places.
The countertop is
square meters.
✓ Check
Next

Answers

Answer:

it will help you

Answer:

The countertop is  8.37 square meters

Step-by-step explanation:

Let

L ----> the length of the countertop

W ----> the width of the countertop

we know that

The area of rectangle (countertop) is equal to

we have

Remember that

To convert feet to meters multiply by 0.305

so

Find the area in square meters

Answer:

8.37

Step-by-step explanation:

hope this helps!

have a good day :)

Please help me. I need how to do the problem too

Answers

Answer: Choice A.  (8, 4)

==========================================================

Explanation:

Because x = 2y, we can replace every copy of x with 2y

Let's do so in the second equation

3x - 4y = 8

3(x) - 4y = 8

3(2y) - 4y = 8 .... x replaced with 2y; now let's isolate y

6y - 4y = 8

2y = 8

y = 8/2 ..... divide both sides by 2

y = 4

Use this y value to find x

x = 2y

x = 2*4

x = 8

So we have x = 8 and y = 4 pair together to get the answer (x,y) = (8, 4) which is choice A.

Oliver expects that the number of visitors to a museum(y) is related to the daily rainfall in mm(x). He plots a scatter plot and determines the equation for the line of best fit: y=14.1x+62.0 What is the expected number of visitors when the daily rainfall is 20 mm? Give your answer to the nearest integer.

Answers

Answer:

344 visitors

Step-by-step explanation:

Given that the relationship between the number of visitors to a museum(y) and the daily rainfall in mm(x) is defined as

y=14.1x+62.0

when the daily rainfall is 20 mm, the number of visitors

y = 14.1(20) + 62

= 282 + 62

= 344

It means that the expected number of visitors is 344 persons (to the nearest integer).

anyonee?
pleaseee help!!!!​

Answers

Step-by-step explanation:

Given

sin³ø cos ø + cos³ø sinø

= sin ø cos ø ( sin²ø + cos²ø)

= sinø cosø * 1

= sinø cosø

Hope it will help :)

What is the measure of ∠BCE, in degrees, in the figure shown?

Answers

Answer:

25 degrees

Step-by-step explanation:

So a triangles angels equal 180 degrees

So for angel ECD 180 - (15+90) = 75

Straight lines also always equal to 180 degrees so

180 - (80+75) = 25

Measure of ∠BCE = 25° .

What is angle?

A figure which is formed by two rays or lines that shares a common endpoint is called an angle. The word “angle” is derived from the Latin word “angulus”, which means “corner”.

Given, In figure,

∠CED = 15°

∠EDC = 90°

∠BCA = 80°.

In triangle ECD

Sum of all interior angles of a triangle is 180°

∠ECD +∠CED +∠EDC = 180°

∠ECD + 15° + 90° = 180°

∠ECD = 180° - 105°

∠ECD = 75°

Now,

∠BCA,∠BCE and∠ECD are at point C on line AD.

Sum of all angles made at one point of line is 180°.

∠BCA +∠BCE +∠ECD = 180°

80° + ∠BCE + 75° = 180°

∠BCE = 180° - 155°

∠BCE = 25°

Hence, 25° is measure of ∠BCE.

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What is the y-intercept of 2x - 6 = 24?

Answers

Answer:

-30

Step-by-step explanation:

-6-24

=-30

...........

Just add them up like this!
6
+ 24
_____
30,

help plzzzzzzzzzzzz ​

Answers

33+28+7x= 180
61+7x =180
7x= 119
X= 17
Hope this helped :)
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