Solve the following system of equations using substitution, elimination, or elimination by multiplication.
Answers
Explanation:
2x - 7(2x + 16) = -64
2x - 14x - 112 = -64
-12x = 48
x = -4
y = 2(-4) + 16
y = -8 + 16
y = 8
Related Questions
i need help i will get a zero if i dont
Answers
Answer:
You would multiply 7cm twice. and then multiuply 9 twice and then you add the two sums.
so 49 plus 81 is 130
so you have 130 cm.
Step-by-step explanation:
Hope this helps Im bad at math.
00
What is the length of BC?
17
А A
9 units
11 units
O 15 units
O 16 units
8
С
Answers
Answer:
C. 15 units
Step-by-step explanation:
I apologize if this answer is late, but I hope this can help other people who need this :)
The length of BC is 15 units.
What is Right Angled Triangle?Right angled triangle are those triangle for which one of the angle is 90 degrees.
Given a right angled triangle ABC.
Given that angle C is right angle.
Side AB is the hypotenuse, AC is the base and BC is the altitude.
Pythagoras theorem states that for a right angled triangle, the square of the hypotenuse is the sum of the squares of base and altitude.
Using the theorem,
(AB)² = (AC)² + (BC)²
(BC)² = (AB)² - (AC)²
= 17² - 8²
= 289 - 64
= 225
BC = √225 = 15 units
Hence the side length of BC is 15 units.
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Which type of triangle has side measures of 5 cm, 9 cm, and 12.7 cm and one angle measure of 128°?
A.
acute isosceles
B.
obtuse scalene
C.
obtuse isosceles
D.
acute scalene
Answers
This question is dealing with classification of triangles based on angles or on number of equal sides.
the triangle is called an Obtuse Scalene Triangle
Now, the classification in terms of angles are;
- Acute angle is when the angle measures between 0 and 90 degrees.
- Obtuse angle is when the angle is greater than 90 but less than 180 degrees.
- right angle is when the angle is exactly 90 degrees.
- Reflex angle is when the angle is greater than 180 but less than 360 degrees.
Now the classification in terms of equal sides;
- Isosceles triangle is one that has 2 equal sides.
- Equilateral triangle is one that has 3 equal sides.
- Scalene triangle is one that has no equal sides.
The lengths of the three sides of the triangle given are;
5 cm, 9 cm, and 12.7 cm
The three sides are not equal and from definition above it is called scalene triangle.
The angle given is 128° and from definition earlier, it is an obtuse angle.
In conclusion, the triangle is called an Obtuse Scalene Triangle
Read more at; brainly.com/question/8704415
What rule is shown by this input/output table and coordinate plane?
A. add 3
B. subtract 3
C. divide by 2
D. multiply by 2
Answers
Answer:
B
Step-by-step explanation:
subtract 3
input and output always input should be your first one.
So, 6-3=3 7-3=4 8-3=5
9-3=6 10-3=7
Hope this helps u:)
Pls mark brainlist
What is 4(1 + 9x) ?
Answers
Answer:
36x+4
Step-by-step explanation:
4*1+4*9x
(4x1) + (4 x 9x)
4 + 36x
help pls!!
A box contains 5 orange pencils, 7 green pencils, and 4 blue pencils what is the probability of randomly selecting a blue pencil from the box??
Answers
Answer:
1/4
Step-by-step explanation:
5 + 7 + 4 = 16
4/16 = 1/4
pls give me brainliest :)
William has a sticker album. Some pages have 1 sticker on them, and other pages have 2 stickers on them. If William has 18 stickers, how many different ways can he put the stickers in the album?
Answers
Answer:
6 ways
Step-by-step explanation:
William has a sticker album.
We are told in the question that:
Some pages have 1 sticker on them, and other pages have 2 stickers on them. If William has 18 stickers
The many different ways that can he put the stickers in the album is calculated as:
18 stickers ÷ ( 1 stickers + 2 stickers)
= 18 ÷ 3
= 6 ways
Therefore, the different ways that he can put the stickers in the album is 6 ways
You can use a table with 3 rows and 6 columns to show the sample space of combinations of a number followed by a letter using 3 numbers and 6 letters. What other table could you use? pleas help me
Group of answer choices
A) A table with 6 rows and 6 columns
B) A table with 6 rows and 3 columns
C) A table with 3 rows and 3 columns
D) A table with 9 rows and 2 columns
Answers
Answer:
I would probably pick letter B.
Step-by-step explanation:
If you had a table with 3 rows and 6 columns, wouldn't it be the exact same thing if you switched them up?
That would be my best guess!
Answer:
I would say B
Step-by-step explanation:
that just look like the right answer. because you would just switch them up. that is what I would choose
Solve the equation
x/-2-17=-7
Answers
Answer: x= -20
Step-by-step explanation: hope it helps thx for the points
Answer:
Step-by-step explanation:
Point D has coordinates (4, 1). What are the coordinates of Rx = 2(D)?
Answers
Answer:
The coordinates of Rₓ = [tex]2^{(D)}[/tex] = D'(0, 1)
Step-by-step explanation:
As given, D = (4, 1)
Now,
The coordinates of Rₓ = [tex]2^{(D)}[/tex] = D'(0, 1)
Help what number goes where
Answers
Answer:
The first, 4th and 6th are rational.
Step-by-step explanation:
The second, third and 5th are irrational.
In a lab experiment, 80 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 17 hours. How many bacteria would there be after 20 hours, to the nearest whole number?
Answers
Answer:
y = 181
Step-by-step explanation:
Doubling Formula:
[tex]y = a(2)^\frac{t}{d}[/tex]
y=80
d=17
t=20
plug in
y=80(2)[tex]^\frac{20}{17}[/tex]
y=180.818525349
y≈181
i hope this helps some!
Answer: 149
Step-by-step explanation:
Ana ran 12.5 miles on week one of her training. On week two she ran 5 6/8 miles. How many more miles did she run on week 1 than week 2?
A. 7 5/6
B. 7 1/4
C. 17 7/10
D. 17 6/16
Answers
Answer: C
Step-by-step explanation: My first time sorry if I am wrong
How many solutions are there to the equation below?
12x + 6 = 5x
O A. Infinitely many
B. 1
C. O
BMIT
Answers
What is the product ([tex](7\sqrt{8} +3\sqrt{12} )(7\sqrt{8} -3\sqrt{12})[/tex]?
Answers
2. Which statement is not true in the equation
y = 0.5x?
A. The value of y is one-half times the value of x.
B. The equation represents an additive relationship.
C. The value of y is 4 when the value of x is 8.
D. The equation represents a multiplicative
relationship.
Answers
Answer:
B
Step-by-step explanation:
how do you slove this equation
12 n3
-------
3(n4)2
Answers
Answer:
36n
----------------
24n
Answer:n to the fourteenth power
Step-by-step explanation:
Need help will give thanks and brainliest
Answers
Answer:
[tex]y=\frac{2}{3} x-1[/tex]
Step-by-step explanation:
Linear equations are typically organized in slope-intercept form:
[tex]y=mx+b[/tex] where [tex]m[/tex] is the slope and [tex]b[/tex] is the y-intercept (the value of y when the line intercepts the y-axis)
1) Find the slope of the line (m)
The equation for slope: [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] when the given points are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]
Plug in the given points (3,1) and (6,3)
[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]=\frac{3-1}{6-3}\\=\frac{2}{3}[/tex]
Now, plugging this back into [tex]y=mx+b[/tex], our equation looks like this:
[tex]y=\frac{2}{3} x+b[/tex]
2) Find the y-intercept of the line
To find the y-intercept, we take the equation that we have so far and plug in any given point to solve for b. For example, we can use the point (3,1):
[tex]1=\frac{2}{3}*3+b\\1=2+b[/tex]
Subtract both sides by 2 to isolate b
[tex]1-2=2+b-2\\-1=b[/tex]
3) Plug m and b into y=mx+b
[tex]y=\frac{2}{3} x-1[/tex]
I hope this helps!
Westlane’s gym can hold up to 500 people. Studenttickets are $2 and adult tickets are $5. Mr.Pitcok wants to raise at least $1000 from ticket sales.Write a system of inequalities torepresent the situation and graph the inequalities.
Answers
Answer:
2s + 5a > 1000
s + a < 500
Key:
s represents a sold student ticket
a represents a sold adult ticket
Will give brainliest!
Answers
Answer:
The number of values we can get on a standard number cube is 1,2,3,4,5,6 - and so 6 values.
Step-by-step explanation:
a bakery used 25% more butter this month than last month if the bakery used 240 kilograms of butter last month how much did it use this month
Answers
Answer:
300
Step-by-step explanation:
25% of 240 is 60.
Brad has $75 in his savings account and adds $25 every month he doesn't make any withdrawals from the account which inequality shows the number of months it would take Brad to save at least $200
Answers
The inequality representing the problem will be x+3 ≥ 8
What is inequality?A relationship between two expressions or values that are not equal to each other is called inequality.
Given that, Brad has $75 in his savings account and adds $25 every month he doesn't make any withdrawals from the account, and saves at least $200.
Let the number of months be x,
75 + 25x ≥ 200
25(3+x) ≥ 200
x+3 ≥ 8
Hence, The inequality is x+3 ≥ 8
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6^2 – 7(8 + 6. – 3^2)
The value of the expression is
?
Answers
Ghhvfyjbdginvff hjjjn
How to simplify the following expression
34x-(25x-3)-18
Answers
Answer: 9x-15
Step-by-step explanation:
Given
34x-(25x-3)-18
Expand parenthesis
34x-25x+3-18
Put like terms together
(34x-25x)+(3-18)
Combine like terms
9x-15
Hope this helps!! :)
Please let me know if you have any questions
Please answer number 17 with work
Answers
B. 31, 106 and 43.
Step-by-step explanation:i found out that x = 103x + 1 = 3111x - 4 = 1065x - 7 = 43
Exam Question
The coordinates of P are (-3, -6)
The coordinates of Q are (1, 4)
The coordinates of Rare (5, -2)
M is the midpoint of PQ.
N is the midpoint of QR.
Prove that MN is parallel to PR.
You must show each stage of your working.
Answers
Answer:
2
Step-by-step explanation:
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23567
2356839200558
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A ladder is leaning against the side of a building. The building and the ground form a right angle. How high on the
building will the ladder touch if the ladder is 17 ft long and the base of the ladder is 8 ft from the base of the building?
A. 64 ft
B. 8 ft
OC. 15 ft
O D. 16 ft
Answers
Answer:
15m
Step-by-step explanation:
(see attached)
plz help this is what might get m to a 100 so plz help me
Answers
Answer:
I'd say it's the first dot in from the left (close to 2.4)
Step-by-step explanation:
the square root of 6 is 2.4494, and that's very close to 2.4
can someone please help me out with this problem ? i been trying to do this for like 2 days now and i still don’t get it .. also i need some tips on how i can remember this when im doing a different problem
Answers
Answer:
Step-by-step explanation:
the Pythagorean theorem is
c is the hypotenuse which is the side opposite of the right angle
plug the numbers into the Pythagorean theorem
[tex]x^2+(\sqrt{26})^2=13^2[/tex]
when squaring a square root, just take the number in the radical and get rid of the radical
[tex]x^2+26=169[/tex]
subtract 26 from both sides
[tex]x^2=[/tex][tex]143[/tex]
find the square root of 143
143 is prime so it can just be written as
[tex]x=\sqrt{143}[/tex]
Given m||n, Find the value of x. Need help.
Answers
9514 1404 393
Answer:
x = 12
Step-by-step explanation:
The two marked angles are a linear pair, so are supplementary.
(8x -20)° +(8x +8)° = 180°
16x -12 = 180 . . . . . . . . . . . divide by °, collect terms
16x = 192 . . . . . . . . . . . add 12
x = 12 . . . . . . . . . . . divide by 16