Incomplete question.
how to solve -6x+5y=16 and x=5-3y using subsituation
Answer:
you already have x solved for so you plug 5-3y into the x in -6x and you get -6(5-3y)+5y=16
-30+18y+5y=16
-30+23y=16
23y=46
y=2
x=5-3(2)
x=5-6
x=-1
Step-by-step explanation:
The length of the base of an isosceles triangle is x. The length of a leg is 2x - 3. The perimeter of the triangle is 34. Find x.
Answer:
x=8
Step-by-step explanation:
If the triangle is isosceles, it means that 2 of its sides are equal in length, therefore its perimeter is equal to
[tex](2x - 3) + (2x - 3) + (x)[/tex]
Adding similar terms, and recalling that the perimeter is equal to 34, we get
[tex]5x - 6 = 34 \\ 5x = 40 \\ x = 8[/tex]
I need help please, I will give brainliest to the first 2 people
Answer:
B
Step-by-step explanation:
they are parallel so it means none
There are 36 quarters in my coin collection. If my coin collection has 45% quarters, how many total coins do I have?
9514 1404 393
Answer:
80
Step-by-step explanation:
If N is the total number of coins, then the number of quarters is ...
36 = 0.45×N
36/0.45 = N = 80
You have 80 coins you your collection.
Factor completely. 492 – 9 =?
Answer:
483
Step-by-step explanation:
Answer:
483
Step-by-step explanation:
subtract 492 by 9 and it is =483
HELP PLEASE.
In.AA80 m24 = 10° and m28- 145°. Select the triangle that is similar to AABC. O A. AMNP, in which m_M= 145º and MzN= 15 O B. AXYZ, in which m2X= 10º and m2 7 = 25° O = C. AJKL, in which meJ= 10° and mL = 135 o D. APQR, in which m_P= 25° and MR = 135°
Answer:
B. ∆XYZ, in which m∠X = 10° and m∠Z = 25°
Step-by-step explanation:
∆ABC
m∠A = 10°
m∠B = 145°
m∠C = 180° - (m∠A + m∠B )
= 180° - (10° + 145°)
= 180° - 155°
m∠C = 25°
∆XYZ
m∠X = 10°
m∠Z = 25°
m∠Y = 180° - (m∠X + m∠Z)
= 180° - (10° + 25°)
= 180° - 35°
m∠Y = 145°
so,
m∠A = m∠X = 10°
m∠C = m∠Z = 25°
m∠B = m∠Y = 145°
I'm just ordinary human, CMIIW
preform the operation (8x 2 +8x)−(−9x 2 +8x)
Answer:
17x^2
Step-by-step explanation:
8x^2-(-9x^2)= 17x^2
+8x-8x
Carlos landlord added a markup of 6.5% to their October rent . Carlos rent would have been 750 what is the cost of his rent after the markup
Answer:
c
Step-by-step explanation:
dont know if i am right
Need help pleaseee someone
Answer:
Step-by-step explanation:
James troubled 40 miles per hour and traveled a total distance of 260 miles use the formula D equals RT to determine the total amount of time it took James to reach his destination
Answer:
6.5 hours
Step-by-step explanation:
James troubled 40 miles per hour and traveled a total distance of 260 miles
The formula to calculate the Total Amount of time it would take to reach the destination bis given as:
Time = Distance/Speed
Distance = 260 miles
Speed = 40 miles per hour
Hence,
Time = 260 miles/40 miles per hour
Time = 6.5 hours
Therefore, the total amount of time it took James to reach his destination is 6.5 hours
Given that OA = 2x + 9y, OB = 4x + 8y and CD = 4x - 2y, explain the geometrical relationships between the straight lines AB and CD.
Answer:
The geometrical relationships between the straight lines AB and CD is that they have the same slope
Step-by-step explanation:
Given
[tex]OA = 2x + 9y[/tex]
[tex]OB = 4x + 8y[/tex]
[tex]CD = 4x - 2y[/tex]
Required
The relationship between AB, CD
Since AB is a straight line and O is the origin, then:
[tex]AB = (c - a)x + (d - b)y[/tex]
Where:
[tex]OA = ax + by[/tex] ====> [tex]OA = 2x + 9y[/tex]
[tex]OB = cx + dy[/tex] ====> [tex]OB = 4x + 8y[/tex]
This implies that:
[tex]a =2[/tex] [tex]b = 9[/tex] [tex]c = 4[/tex] [tex]d = 8[/tex]
So:
[tex]AB = (c - a)x + (d - b)y[/tex]
[tex]AB = (4 - 2)x + (8 - 9)y[/tex]
[tex]AB = 2x -y[/tex]
So, we have:
[tex]AB = 2x -y[/tex]
[tex]CD = 4x - 2y[/tex]
Calculate the slope (m) of [tex]AB\ and\ CD[/tex]
[tex]m = \frac{Coefficient\ of\ y}{Coefficient\ of\ y}[/tex]
For AB
[tex]m_1 = \frac{-1}{2}[/tex]
[tex]m_1 = -\frac{1}{2}[/tex]
For CD
[tex]m_2 = \frac{-2}{4}[/tex]
[tex]m_2 = \frac{-1}{2}[/tex]
[tex]m_2 = -\frac{1}{2}[/tex]
By comparison:
[tex]m_1 = m_2 = -\frac{1}{2}[/tex]
This implies that both lines have the same slope
A 5-pound bag of cat food costs $11.25. What is the unit price of the cat food?
a
$0.44 per pound
b
$2.25 per pound
c
$6.25 per pound
d
$56.25 per pound
n no postin link step by step
Answer:
C $2.25
Step-by-step explanation:
$11.25÷5=$2.25
Evaluate each expression
7 + 9=
43 - 5=
800 divided by 12. help me pls
Answer:
Helloooo
ur answer is
66.6666666667
Step-by-step explanation:
thanks.....hope it helps
Escribe and correct the error in finding the simple interest earned on $500 at 6% for 18 months. I=500(0.06)(18) I = 540
Answer: 45$
Step-by-step explanation:
Given
Principal [tex]P=\$500[/tex]
Rate [tex]R=6\%[/tex]
time [tex]t=18\ \text{months or}\ 1.5\ \text{years}[/tex]
Simple interest is given by
[tex]\Rightarrow S.I.=\dfrac{P\times R\times T}{100}[/tex]
In the question, time is taken in months which is incorrect
Putting values
[tex]\Rightarrow S.I.=\dfrac{500\times 6\times 1.5}{100}=45\$[/tex]
What two numbers have a sum of 215 and a difference of 137
Answer:
see below
Step-by-step explanation:
let x = big number
let you = small number
x + y = 215-------> (1)
x - y = 137 ------>(2)
(1)
x = 215 - y ----->(1)
substitute 1 into 2
215 - y -y = 137
-2 y = 78
y = 39
substitute y = 39 into (1)
x = 215 - (39)
x = 176
thus the numbers are 176 & 39
hope this helps
please mark it brainliest
it took me quite long to do this
A can of orange juice is 12 ounces. How many grams is the can of
orange juice?
Answer:
HI! The answer should be around 340.194 grams
Step-by-step explanation:
Calculated it
Answer:
340.194 grams inside the can of orange juice.
Step-by-step explanation:
A company packages their product in two sizes of cylinders. Each dimension of the larger finder
is twice the size of the corresponding dimension of the smaller Cylinder
20
2h
Based on this information, which of the following statements is true?
A. The volume of the larger cylinder is 2 times the volume of the smaller cylinder.
B. The volume of the larger cylinder is 4 times the volume of the smaller cylinder.
C. The volume of the larger cylinder is 8 times the volume of the smaller cylinder.
D. The volume of the larger cylinder is 6 times the volume of the smaller cylinder.
The true statement is The volume of the larger cylinder is 8 times the volume of the smaller cylinder.
The correct option is (C)
What is Volume of cylinder?The volume of cylinder is, V= πr²h.
Volume of large cylinder,
= πr²h
= πd²(2h)
= 2hπd²
Volume of large cylinder,
= πr²h
= π(d/2)²(h)
= πd²h/4
= 2πd²h/8
Hence, The volume of the larger cylinder is 8 times the volume of the smaller cylinder.
Learn more about volume of cylinder here:
https://brainly.com/question/16788902
#SPJ1
What is the domain of y = log5^x
all real numbers less than 0
all real numbers greater than 0
all real numbers not equal to 0
all real numbers
Answer:
The answer is all real numbers
Answer:b
Step-by-step explanation:
Solve the following algebraic expressions
1) n(n-4) -n(5-n)
2)
Answer:
[tex]n {}^{2} - 4n - 5n + n { }^{2} \\ = 2n {}^{2} - 9 [/tex]
Hope it helps
Answer:
[tex]\huge\boxed{1) 2n^2-9n}[/tex]
[tex]\huge\boxed{2) 6c\³ + 4c\²}[/tex]
Step-by-step explanation:
Part 1:
= n(n-4)-n(5-n)
By distributive property
= n² - 4n - 5n + n²
= 2n² - 4n - 5n
= 2n² - 9n
Part 2:
= 4c(3c-c²)-2c²(4-5c)
Distributing brackets
= 12c² - 4c³ - 8c² + 10c³
Combining like terms
= 12c² - 8c² - 4c³ + 10c³
= 4c² + 6c³
= 6c³ + 4c²
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807An oblique candle with a volume of 270 cubic centimeters is 18 centimeters tall. The width of the triangular candle base is 5 centimeters, and the width of the slanted candle is 7 centimeters. An oblique triangular prism has a volume of 270 cubic centimeters. The vertical height is 18 centimeters. The width of the triangular bases is 6 centimeters, and the width of the slanted prism is 7 centimeters. What dimensions of the box are required to fit the candle? 5 cm by 6 cm by 18 cm 7 cm by 6 cm by 18 cm 5 cm by 3 cm by 18 cm 7 cm by 3 cm by 18 cm
Answer:
7 cm by 6 cm by 18 cm
Step-by-step explanation:
Given :
Volume of candle = 270cm³
Height = 18cm
Triangular base = 5cm
Width of candle = 7cm
Volume = Area of base * height
270cm³ = Area of base * 18
Area of base = 270cm³ / 18cm
Area of base = 15 cm²
Using this to find the height of triangular prism :
Area = 1/2 * base * height
15cm² = 1/2 * 5 * height
15cm² = 2.5 *. Height
Height = 6 cm
Hence, the dimension of triangular prism is : 7cm by 6cm by 18cm
Answer:
7 cm by 6 cm by 18 cm
Step-by-step explanation:
its D
James studied for his test. He started studying at 3:20 p.m. and studied for 2 hours
and 15 minutes. What time did he finish studying? (SHOW WORK PLS BEST ANSWER WITH BEST EXPLANATION GETS THANKS AND BRAINLIEST!!)
Answer:
James finished studying at 5:35pm
Step-by-step explanation:
3:20+2:15=3:35
20+15=35
3+2=5
123 divided by 5? Please help I need the answer now!!!
Answer:
24.6
Step-by-step explanation:
Answer:24.6
Step-by-step explanation:
Please help me on this question!!!
Answer:
I cannot help you because I didnot know the answer
what is the coefficient in -x+9
Answer:
-1
Step-by-step explanation:
The coefficient is the number directly next to a given variable (typically 1 if there is no given number).
In this case, note the variable: -x
As stated above, the number is 1 if there is no number given. However, note that there is a negative sign, therefore, your coefficient is -1
-1 is your answer.
~
Aidan rollerblades 540 ft per min. at this rate how far in yards will he rollerblade in 5 min( 1 yd =3 ft)
Answer:
900 yards
Step-by-step explanation:
540/3=180
180x5=900
streets A and B run parallel to each other. The measure of angle 6 is 155 degrees. What is the measure of angle 7?
Answer:
m<7 = 155
Step-by-step explanation:
<6 = <7 due to vertical angle thm
I need help finding the slope
y2- y1 / x2 - x1
3 - -2 / 1 - -3
5/4
So, 5/4 or 1.25.
Which equation represents a line that is parallel to the line represented by
4x + y = 7 and passes through the point (1, 8)?
Answer:
y = -4x + 12
Step-by-step explanation:
For a line to be parallel, it needs to have the same slope.
Point intercept form: y - y₁ = m (x - x₁)
Where y and x are just kept as y and x, y₁ and x₁ are the parts of a coordinate, and m = slope.
So, in order for the line to be parallel, it needs to have the same slope as the first equation. The slope of the line (which is the "m" in y = mx + b) is..
4x + y = 7
y = -4x + 7
So, m, or the slope, is -4.
Plug this, along with the coordinate the problem gives you into point-intercept form.
y - y₁ = m (x - x₁)
y - 8 = -4 (x - 1)
Simplify.
y - 8 = -4x + 4
Add 8 to both sides.
y = -4x + 12
Help ASAP Please! This is timed, and I only have 45 minutes left to answer the rest of these questions. I will award 100 points and brainly to whoever can give me the equation. Help Please Time is on the essence, and If i fail this I risk failing the class
Answer:
y = 6/7x - 37/7
Step-by-step explanation:
m = 6/7
(5, -1)
y - y1 = m(x - x1)
y + 1 = 6/7(x - 5)
y + 1 = 6/7x - 30/7
y = 6/7x - 37/7
Answer:
Step-by-step explanation:
Start by the point-slope form and given slope = 6/7 and point (5, -1)
(y-(-1)) / (x-5) = 6/7
7(y+1) = 6(x-5)
7y = 6x - 37
y = 6x/7 - 5 2/7
which is the answer in slope-intercept form