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
lions [1.4K]
3 years ago
7

Solve using substitution​

Mathematics
1 answer:
aliina [53]3 years ago
3 0

Answer:

(3, -8)

Step-by-step explanation:

-3*3 - 3y = 15

-9 -3y = 15

3y = -24

y = -8

You might be interested in
What are the potential solutions of In(x2 - 25) = 0?
Paha777 [63]

Answer:

x=\pm\sqrt{26}

Step-by-step explanation:

ln(x^2-25)=0

e^{ln(x^2-25)}=e^0

x^2-25=1

x^2=26

x=\pm\sqrt{26}

7 0
3 years ago
The area of a baseball field bounded by home plate, first base, second base, and third base is a square. If a player at first ba
Andru [333]
Well the question doesnt show any number for a side or anything but we can solve this with algebra if we say that a side from one base to next has a length of x. so we know each side has length x and that the shape they make is square. This means we are only searching for the diagonal of a square.

remember that a diagonal forms and isoscoles right triangle with the 2 sides being equal and the diagonal as the hypotenuse. Using the pythagoream theorem we can say that
a^2 + b^2 = c^2

we said all side lengths are x so we can put x in for a and b and get

x^2 + x^2 = c^2

2x^2 = c^2

c = x * squareroot(2)

that is the basic fundamental answer that will always work when working with diagonals of squares.

so if the length between bases is 90 ft, we could plug this in and get
c = 90 ft * squareroot(2)
c = 127.28 ft
7 0
3 years ago
38" points please help
nikdorinn [45]
1. The winner threw the ball 175 ft, so what we want to do now is we convert (175) ft into yd.

We already know that 1ft= 1/3 yd, so the distance in yd is:
175 ft* (1/3 yd/ 1 ft) = 58 1/3 yd.

The answer is A. 58 1/3 yards.

2. 75 min* (4.5 miles/ 15 min)= 22.5 miles.

The correct answer is D. 22.5

3. Let's say that there are 4 weeks in a month. There are 5 weekdays in a week, so the number of weekdays in a month is:
5 weekdays/ 1 week* (4 weeks/ 1 month)= 20 weekdays/ 1 month.

Alex runs 5.9 miles/ 1 weekday, so the number of miles he runs every month is:
(5.9 miles/ 1 weekday)* (20 weekdays/ 1 month)= 118 miles/ month.

The nearest number to 118 is 120, so the answer is D.120 miles

4. 10 sweaters to 8 shirts:

10:8= 10/8= 5/4

The answer is B. 5/4

Hope this would help~
3 0
3 years ago
The ratio of band students to choir students is 4:6. There are a total of 60 students in the band and choir. How many students a
xenn [34]

Answer:

24

Step-by-step explanation:

Given that:

The ratio of band students to choir students is 4 : 6.

Total number of students in the band and choir combined = 60

To find:

The number of students in the band = ?

Solution:

First of all, let us understand the meaning of the ratio given.

Ratio of 4 : 6 means there are 4 number of band students for every 6 number of choir students.

Also, number of band students will be in the multiples of 4 only and

number of choir students will be in the multiples of 6 only

Let the total number of band students = 4x

Let the total number of choir students = 6x

Total number of students = 60

As per question statement, we can write the following equation:

\Rightarrow 4x+6x=60\\\Rightarrow 10x = 60\\\Rightarrow x =6

Total number of band students = 4 \times 6 = <em>24</em>

5 0
3 years ago
Help pleeeeeeeeeease ?
cupoosta [38]
The answer is choice D.
Cause it can't be calculate.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The depth of the water, d, at the end of a pier changes periodically as a function of time, t, in hours as shown in the graph be
    10·2 answers
  • 70 mm equals how many cm
    7·1 answer
  • Need help on this one to plz show work
    8·1 answer
  • How are fractions and decimals related
    8·2 answers
  • F(-5) if(x) - 4x + 2
    13·1 answer
  • Pleaseeeehelppppppppp
    11·1 answer
  • What is the intermediate step in the form (x+a)^2=b(x+a)
    9·1 answer
  • Which expression is equivalent to the given expression? Assume the denominator does not equal zero.
    12·1 answer
  • NEED ANSWER ASAP WILL GIVE BRAINLIEST FOR CORRECT ANSWER
    12·1 answer
  • L need help with this pls
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!