1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Oksanka [162]
3 years ago
14

8) Solve the following system by the substitution method. Check the solution(s).

Mathematics
2 answers:
Musya8 [376]3 years ago
4 0
(-1) 6x + 7y = 3
(6) x + y = 1

-6x - 7y = -3
6x + 6y = 6

-1y = -3

divide both by -1

y = 3


then


6x + 7(3) = 3
6x + 21 = 3
6x = -18

divide both by 6

which equals x = -3


harkovskaia [24]3 years ago
3 0

Answer:

x= 4

y= -3

Step-by-step explanation:

You might be interested in
Solve the equation with rational exponents. (x minus 1 )Superscript 2 divided by 3 Baseline equals 64
Katarina [22]

Answer:

x=513 \Rightarrow S=\{513\}

Step-by-step explanation:

1) Rewriting for the sake of clarity:

(x-1)^{\frac{2}{3}}=64

2) To solve it, we need to turn the rational exponent equal to 1 via exponent rule of product. Multiplying 2/3 by its reciprocal 3/2 we get 1, since this is an equality we need to do it on the other side.

(x-1)^{\frac{2}{3}}=64\\\\((x-1)^{\frac{2}{3}}]^{\frac{3}{2}}=(64)^{\frac{3}{2}}\\(x-1)=\sqrt{64^{3}}\\x-1+1=512+1\\x=513

4 0
3 years ago
5. Find the measures of the following. Round to the nearest whole number. (2 points)
chubhunter [2.5K]

Answer:

HT = 17 cm

<T = 58°

<H = 32°

Step-by-step explanation:

✔️Find HT:

Since it's a right triangle, we would apply the Pythagorean Theorem given as c² = a² + b²

Where,

a = HW = 15 cm

b = WT = 8 cm

c = HT

Plug in the values:

HT² = 15² + 8²

HT² = 289

HT = √289

HT = 17 cm

✔️Find <T by applying trigonometric ratio formula:

Recall: SOH CAH TOA

Reference angle (θ) = <T

HW = 15 cm = Opposite side length

WT = 8 cm = Adjacent side length

Apply CAH:

Cos θ = Adj/Hyp

Substitute

Cos T = 8/15

T = cos^{-1}(0.5333)

T ≈ 58°

✔️Find <H:

Sun of interior angles of a triangle = 180°

Therefore,

m<H + m<T + m<W = 180°

Substitute

m<H + 58° + 90° = 180°

m<H + 148° = 180°

m<H = 180° - 148°

m<H = 32°

4 0
4 years ago
An amusement park has 20 attractions, including 5 gift shops.
VikaD [51]
Since In total there is 25 attractions and shops , you would add them because there is still a chance that if it was randomly selected you would get a attraction. If 5/20 is the probability, you would divide 5 by 20 because the “ / “ sign means divide. And if it said 5 of 20 , it would mean multiply as “of” means multiply. So after you do the 5 divided by 20 , it equals 0.25, which comes out to a quarter of 100 which means it is 1/4 chance of getting a gift shop chosen. Answer : 1/4.
Hope I helped, please mark as brainliest!
6 0
4 years ago
A bag contains ten balls labeled 1 through 10. One ball will be randomly picked.
svetlana [45]

Answer:

I also have this same question.

Step-by-step explanation:

Can anybody help?

6 0
3 years ago
Read 2 more answers
What is that answer
masya89 [10]
Umm it's two obviously
5 0
4 years ago
Other questions:
  • Select the component form of the vector shown
    5·1 answer
  • Which is the measure of ∠B?<br> A) 42° <br> B) 138° <br> C) 180° <br> D) 218°
    15·2 answers
  • HELP! PLEASE! which graph represents a function? How do you know?
    14·2 answers
  • 43.8 in expanded form
    5·2 answers
  • A letter is selected from the word EXAMINATIONS. What is the probability that the letter selected is N? ​
    11·1 answer
  • Nika earns a gross pay of $73,000. Her total employee benefits are 22% of her gross pay and she has no job expenses. If Nika get
    7·2 answers
  • Classify each triangle by its angles and by its sides.​
    5·1 answer
  • X + 4y = -1<br> -3x - 14 = y<br><br> Solve by substitution
    11·1 answer
  • I need to do these factor trees for 60 and 96
    11·1 answer
  • A rectangle is formed by placing 2 identical squares side by side. The area of the rectangle is 98 cm2. What is the perimeter of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!