Solve the system by substitution.
y = -3x + 4
y = -7x
Submit Answer

Answers

Answer 1

Answer:

{y,x} = {7,-1}

Step-by-step explanation:

(-7x) + 3x = 4

- 4x = 4

 4x = - 4

x = - 1

   y = -7x

   x = -1

   y = -7(-1) = 7


Related Questions

Given that,
2a + 5b=22
b = 2
Find the value of a.​

Answers

Answer:

11

Step-by-step explanation:

Answer:

a=5.5 I hope this helped you

Given that f(x) = x2 - 2x - 15,
a. Find the coordinates of the y-intercept

b. Find the coordinates of the x-intercepts

c. Find the coordinates of the vertex

d. Use the above information to sketch a graph of f(x)

Answers

a) (0; -15)

you just let x be equal to 0.

b) ( -5; 0) and (3;0)

you just let y/ f(x) equal to 0.

c)

A shop sells flower fertiliser in 25kg bags and in 50kg bags.
One week, the shop has two special offers for the fertiliser.
Offer A:
Offer B:
25 kg
50 kg
2 bags for £35
3 bags for £92.50
Which offer (A or B) is the best value for money?
You must show how you get your answer.​

Answers

Offer A is correct sir

Step-by-step explanation:

!

9. The figures are similar. Find x.
9.
9
40
X
24

Answers

Answer:

yes it's on a 1.5 scale factor.....I think. The question you put at the top threw me off at first but the picture makes sense. I'm not entirely sure if this is right but if you adjust the triangle to be the same way as the other one then you will see which sides correspond to each other. Each number can be multiplied by 1.5 to get the number that is on the side of the other triangle that corresponds with it....if that makes any sense

If a circle has more than one radius, they are all the same distance from the center to the edge.
True or False

Answers

THE ANSWER IS FALSE IM PRETTY SURE

Answer:

True

Step-by-step explanation:

All radii are half of a diameter.

Area of a right triangle (7,6)

Answers

Answer: The answer is 21

Step-by-step explanation:

The area  formula is 1/2 bh so if you take if you put the numbers into formula it = a=1/2(6)(7)

LOMMON COREATHEMATICS CURRICULUM
Lesson 15 Homework 5.2
3. String A is 35 centimeters long. String B is 5 times as long as String A. Both are necessary to create a
decorative bottle. Find the total length of string needed for 17 identical decorative bottles. Express your
answer in meters.

Answers

Answer:

The total length of string needed for 17 identical decorative bottles is 35.70 meters

Step-by-step explanation:

Let us solve the question

∵ String A is 35 centimeters long

∵ String B is 5 times as long as String A

→ Multiply the length of A by 5 to get the length of B

The length of string B = 35 × 5 = 175 cm

∵ Both are necessary to create a decorative bottle

∴ The length needed for 1 bottle = 35 + 175 = 210 cm

Each bottle needs 210 cm to be decorated

∵ There are 17 identical bottles

→ Multiply the length needed for 1 bottle by 17

∴ The total length needed = 17 × 210 = 3570 cm

The total length needed to decorate 17 bottles is 3570 cm

∵ 1 meter = 100 centimeter

→ Divide the total length by 100 to express it in meters

3570 cm ÷ 100 = 35.70 m

The total length of string needed for 17 identical decorative bottles is 35.70 meters

I need help please ​

Answers

Answer: SAS

Explanation: There are two sides that are congruent and there is one vertical angle between them which are always congruent.

How many solutions does the following equation have?
4(5 - 2v) =4 - 8(v-2)
2)
(A) 1 solution
(B) No solutions
(C) Infinite Solutions

Answers

ANSWER

C. Infinite Solutions

Explanation- graph/plug in the two equations into a graphing calculator ( desmos is a good app )

What is the measurement of

Answers

y= 53°
Hope this helps and good luck u can do this

How many four-digit personal identification numbers (PIN) are possible if the PIN cannot begin with a 0 and the PIN
must be an odd number?
a. 5,000
b. 4,500
c. 3,600
d. 500

Answers

Answer:

B

Step-by-step explanation:

How many four-digit personal identification numbers (PIN) are possible if the PIN cannot begin with a 0 and the PIN must be an odd number?

ANSWER B: 4,500

The number of 4 digit personal identification numbers (PIN) is 4500

What is a PIN?

A PIN is a security code that is used for verifying identities

There are 10 numerical digits i.e. 0 - 9

Since the 4 digit personal identification numbers (PIN) cannot begin with 0, then the first character can take any of 9 digits

The other three characters can take any of the 10 digits.

So, the number of PIN is:

PIN = 9 * 10 * 10 * 10/2

Expand

PIN = 4500

Hence, the number of 4 digit personal identification numbers (PIN) is 4500

Read more about arrangements at:

https://brainly.com/question/6032811

I will mark brainliest
I need help ​

Answers

Answer:

4 million a day, 28 million a week, 145,600,000 a year.

Step-by-step explanation:

6 million times 4 is 24 million. Which explains 4 million daily.

4 million times 7 days a week is 28 million weekly.

28 million times 52 weeks a year is 145,600,000.

Which two points should the line of best fit go through to best represent the data in the scatterplot? ​

Answers

(3,8) (5,12) Hope this helped

Answer:

(3,8) and (5,12) in other words C.

Step-by-step explanation:

Whats the value of c? 60 - (3c + 4) = 4(c + 6) + c

Answers

Answer:

c=4 hope this helpss

Step-by-step explanation:

                                          Answer and Explanation

__________________________________________________________

The value of "c" is 4.

Here's why.

__________________________________________________________

[tex]60-\left(3\cdot c+4\right)=4\cdot\left(c+6\right)+c[/tex]

What does c equal???

__________________________________________________________

Let's try using all numbers to find out what it is

[tex]60-\left(3\cdot 4+4\right)[/tex] = [tex]44[/tex]

[tex]4\cdot\left(4+6\right)+ 4[/tex] = [tex]44[/tex]

So it's 4!

__________________________________________________________

Hope this helps! <3

__________________________________________________________

Press on the picture to see the full picture. I’m really stuck

Answers

D should be the correct answer :)

Answer:

D is the answer

Step-by-step explanation:

A filled circle means "or equal to" in which this case the symbol is less than or equal to, making the dot filled. Since 2 is greater than x, the line would start on the two and continue farther down the line to show that anything 2 or greater is more than x.

An airplane can seat up 175 passengers

Answers

okay okay 123

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

175-87=88 so 88 is where the dot needs to be located so we have option A and option B

For ≤ and ≥ , use a closed dot

For > and < , use a open dot

she said AT LEAST 175

so we would use a closed dot

1. Round each length to the nearest inch.
a) [tex]1 \frac{1}{4} [/tex] ____"
​b) [tex] \frac{7}{8} [/tex] ____"
c) [tex]1 \frac{1}{2} [/tex] ____"
d) [tex]2\frac{5}{8} [/tex] ___"
e) [tex]1\frac{5}{16} [/tex] ___"
f) [tex]4\frac{11}{16} [/tex] ___"

2. Round each length to the nearest foot.
a) 10" _____'
b) 2'9" ____'
c) 2'6" ____'
d)2'9" ____'
e)1'2" ____'
f)9'3" ____'​

Answers

9514 1404 393

Answer:

  1.  1, 1, 2, 3, 1, 5

  2.  1, 3, 3, 3, 1, 9

Step-by-step explanation:

1. Any fraction of an inch that is 1/2" or more will cause the integer value to increase by 1. Otherwise, the integer value is the one you want. Of course ...

  1/2" = 2/4" = 4/8" = 8/16"

  a) 1"

  b) 1"

  c) 2"

  d) 3"

  e) 1"

  f) 5"

__

2. Any inch measure that is 6" or more will cause the integer value to increase by 1. Otherwise, the integer value is the one you want.

  a) 1'

  b) 3'

  c) 3'

  d) 3' . . . same as B

  e) 1'

  f) 9'

need help math question​

Answers

My answer is 8 . Please check the answer.

3/5 divided by what makes 3/10
I will make it the brain lieset answer

Answers

Answer:

5

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

We will use the KFC method to figure out the answer:

3/5 ÷ 2/1

We keep the first fraction

3/5 ÷ 2/1

Flip the last fraction (swap the numbers)

3/5 ÷ 1/2

Change the sign (to a multiplication symbol)

3/5 x 1/2

Then, finally, to solve for the answer, we multiply across (3 x 1 and 5 x 2).

3 x 1 = 3

5 x 2 = 10

The answer is 3/10 because it cannot be simplified any further.

≧◡≦

Mocha here! If this answer helped you, please consider giving it brainliest because I would appreciate it greatly. Have a wonderful day!

What is the circumference of the circle below?

Answers

Answer:

Step-by-step explanation:

circumference C=2*3.14*r

C=2*3.14*18m=113.04 m

Answer:

113.04 meters.

Step-by-step explanation:

Use the formula

2 times pi times r

r=radius of the circle

or Pi times D

d= diameter of the circle.

The radius is 18 meters.

So, do 2 times 18 times pi.

A vanilla cake has a diameter of 8 inches. What is the radius?

Answers

Answer:

4

Step-by-step explanation:

d = 8 inches

r = 8/2 = 4 inches

Answer:

4 inches.

Explanation:

If the diameter is a circle, divide the diameter by two and you will have the answer of 4. This gives you the radius.

8 / 2 = 4

Hope this helps. Have a wonderful day.

WILL GIVE BRAINLY TO FIRST
Question 5 of 17
Which steps show how to use the distributive property to evaluate9 - 67?
O A. 9(67) = 9(70 - 3) = 9 . 70 +9-3 = 630 + 27 = 657
O B. 9(67) = 9(70
OC. 9(67) = 9(70 – 3) =9 .70 – 3 = 630 - 3 = 627
OD. 9(67) = 9(70– 3) = 9.70- 70 3 = 630 - 210 = 420
3) =9.70 -93= 630 -27 = 603

Answers

b.) 9x67 is 203 and the only 203 is b

Given the points (2, 4) & (-1,-5), what is the equation of the line?

Answers

Answer:

y =1 /3 x + 14 /3

Step-by-step explanation:

HELP ASAP
Betsy cut up 5 apples to make a pie. In total there were 35 apple seeds. On average, how many seeds were there per apple?

Answers

Answer:

7

Step-by-step explanation:

While taking a ride in a hot-air-balloon in Napa Valley, Francisco wonders how high he is. To find
out, he chooses a landmark on the ground that is to the east of the balloon and measures the angle of
depression to be 54°. A few minutes later, after the balloon floats horizontally 100 feet east, closer to the
landmark, the angle of depression to the same landmark is determined to be 61°. Determine the height h
of the balloon. Round your answer to the nearest tenth.

a) Find the measures of ∠1, ∠2, ∠3 and ∠4:

∠1 = ________ ∠2 = ________
∠3 = ________ ∠4 = ________
b) Solve for the height of the balloon, h. You may use any
appropriate method but must show your work!

Answers

Answer:

uttujtjtjtjtjjtjtjtjjttjjtjtjtjtjjt

WILL MARK BRANLIEST IF GOTTEN RIGHT

Answers

Answer:

1. Angles 2 and 5.

Step-by-step explanation:

Vertical angles are the angles that are opposite each other when two straight lines intersect.

Answer:

angle 2 and angle 5

Step-by-step explanation:

Question 3 of 10
What is 9C6?
O A. 96
OB. 10
O C. 56
O D. 84

Answers

The answer is d because

a company will clean jarrel carpets for a total of $71 jarrel has a coupon for 20% of the total how much will jarrel save when he used the coupon?​

Answers

Answer: 14.2 I hope im Right but it’s a simple question

Step-by-step explanation:

Answer:

do whatever your instincts are telling you to do

Step-by-step explanation:

16 points, Brainllest, a heart, and stars! First place gets brainllest, five stars and a heart! Second place gets 4 stars and a heart! (You only get it if you get it right )!

Write the percent as a fraction in simplest form and as a decimal. 16.24%
The fraction is
The decimal is

Answers

Answer:

Umm ty!

Step-by-step explanation:

Answer:

Fraction is: 203/1250

Decimal is: 0.1624

Step-by-step explanation:

Thank you for the points! Please mark this as brainliest! :)

Find the Retail Price. Given: Original Price: $60; Markup: 18%

Answers

Answer:

$70.80

Step-by-step explanation:

Answer:

$2.88

Step-by-step explanation:

Hey hoped I helped! Have an amazing day and consider marking this brainliest if you do thank you in advanced! Merry Christmas!

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