Solving the following system using the elimination of substitution method.
5a+3b=11
-2a+3=b
Answer:
a = -2
b = 7
Step-by-step explanation:
5a+3b=11
-2a+3=b
substitute for b:
5a + 3(-2a + 3) = 11
5a -6a + 9 = 11
-a = 2
a = -2
b = 7
Explain how to determine the locations based on the sign of the points (3, -4) and (-4, 3).
qual é o resultado dessa conta 28+X=50?
Answer:
x=22
Step-by-step explanation:
Answer:
x=22
Step-by-step explanation:
Write an expression that represents the following situation: An Uber driver charges $6 plus $1.50 per mile.
Answer:
6.50
Step-by-step explanation:
6+1.50=6.50
What is the average rate of change for this quadratic function for the interval
from x = 1 to x = 3? a.-4 b.4 c.8 d.-8
Answer:
-4
Step-by-step explanation:
I’m pretty sure
What is the quadratic function f(x)? Is it a maximum or a minimum?
-
Please quickly!!
Answer:
A
Step-by-step explanation:
The graph decreases to a minimum then turns and increases.
This is a minimum and occurs at the vertex (1, - 4 )
8. For angle A it is known that cos(A)<0 and csc(A)=10. If A is drawn in standard position, in which
quadrant does its terminal ray lie?
Answer:
The second quadrant.
Step-by-step explanation:
If cos A is negative it is in either QII or QIII.
If csc is positive so is the sine so its in QI or QII.
So to satisfy both conditions the answer is QII.
Find the Area of the figure
Answer:
60 sq. ft
Step-by-step explanation:
(8x15)/2
The first three cards dealt from a
well-shuffled deck of cards are spades. What is the probability that the next card dealt will be a spade?
Nila is constructing triangles for her math project. Choose ALL sets of line segment lengths that Nila can use A) 4 in, 6 in, 6 in B) 2 in, 2 in, 6 in C) 3 in, 4 in, 7 in D) 1 in, 2 in, 2 in E) 5 in, 5 in, 5in
Answer:
a,d,e
Step-by-step explanation: trust
Meteor Crater, located near Flagstaff, Arizona, is a circular
crater with a circumference of 2.32 miles. What is the
approximate diameter of the crater?
Answer:
The approximate diameter of the crater is 0.74 mile.
Step-by-step explanation:
Circumference of a circle(C)=2*π*r(radius of the circle)
2.32 miles=2π*r
or, r=2.32 miles/2π
So, r=0.369 mile
Then,
d=2r
d=2*0.369 mile
So, d= 0.74 mile
a line that passes through (4,5) and (0, -12)
Answer:
Step-by-step explanation:
Hello : let A(4,5) B(0,-12)
the slope is : (YB - YA)/(XB -XA)
(-12-5)/(0-4) = 17/4
an equation is : y=ax+b a is a slope
y = (17/4)x +b
the line through point B(0,-12) : -12 = (17/4)(0)+b
b =-12
the equation is : y =(17/4)x-12
What is the value of x in the diagram of Circle O below? *
Answer:
60 degrees
Step-by-step explanation:
As we know that a circle is 360 degrees, and as line AB bisects the circle, then the resulting "semi-circle" is 180 degrees. As we know that angle AC is 120 degrees, it's simple subtraction, to find that 180-120 is 60. Therefore, the value of x must be 60 degrees.
Hope this explanation helped!
It is recommended that a ramp have at least 8 feet of horizontal distance for every 1 foot of horizontal rise along an incline. The ramp shown has a vertical rise of 5 feet. Does the ramp shown match the recommended specifications? Explain.
Given the following perfect square trinomial, fill in the missing term. (2 points)
4x^2+16x+____
LOOK AT THE SCREENSHOT PLS HELP!!!
Find the length of side x in simplest radical form with a rational denominator.
60
X
30°
Answer:
x = 1.63 units
Step-by-step explanation:
For 30 degree angle,
Hypotenuse = x
Base = [tex]\sqrt2[/tex]
We know that,
[tex]\cos\theta=\dfrac{B}{H}[/tex]
B is base and H is the hypotenuse
So,
[tex]\cos(30)=\dfrac{\sqrt2}{x}\\\\x=\dfrac{\sqrt2}{\cos(30)}\\\\x=1.63[/tex]
So, the value of x is equal to 1.63 units.
1) A research team is planning to use an ice drill at the top of a glacier. The team plans to use the drill for 10 hours each day while the temperature is warmest. The drill's position will move 5 1/12
feet every hour it is used. Predict the change in the drill's position each day. Begin by making an estimate. About how much does the drill's position change in one day?
--65 feet
-50 feet
-5 feet
-2 feet
Answer:
-50
Step-by-step explanation:
I got it correct on iReady Practice: Multiply and Divide Rational - Practice - Level G.
-5 1/12 x 10
The required change in the position of the drill in one day is given as 50 feet. Option B is correct.
Given that,
A research team is planning to use an ice drill at the top of a glacier. The team plans to use the drill for 10 hours each day while the temperature is warmest. The drill's position will move 5 1/12 feet every hour it is used.
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Drill length = 5 1 / 12 = 61 / 12 feet per hour
For 10 hours in a day drill length = 61 / 12 [10] = 50.833 or 50 feet.
Thus, the required change in the position of the drill in one day is given as 50 feet. Option B is correct.
Learn more about simplification here:
https://brainly.com/question/12501526
#SPJ2
What is the solution of the system of equations? y = 25x + 100; y = -10x +
30 *
O A. (2,50)
O B. (-2, 10)
C. (-2, 50)
O D. (2,150)
Answer:
B(-2, 10)
Step-by-step explanation:
-10x+30=25x+100
subtract 25 from -10 (make it -25)
-35x+30=100
subtract 30 from 100 (make it -30)
-35x=70
divide by -35
x=-2
Plug it in:
-10(-2)+30
-20+30
y=10
i need help with this
Answer:
V = 235.5
or V = 75π
Step-by-step explanation:
V=πr^2h
Volume of a cylinder is (pi)(radius)(radius)(height)
V = (3.14)(5)(5)(3)
V = 235.5
Or, since it said you can leave it as pi,
V = 75π
Please let me know if you have questions.
Nya wants to buy a sweater that had an original price of $50. The sweater is now discounted 15% and the sales tax rate is 6%. How much will Nya pay for the sweater? Round to the nearest cent (hundredths place). *
Answer:
$45.05
Step-by-step explanation:
Sale price of sweater is (1.00 - 0.15)($50), or 0.85($50) = $42.50. Nya has to pay 6% sales tax on this $42.50. Thus, the final amount due is
(1.00 + 0.06)($2.50) = $45.05
Answer:
46.42
Step-by-step explanation:
First step is to find the discount
Discount = original price * discount rate
= 55 * 20%
= 55*.20
=11
Take the discount from the original price and that is the new price
new price = original price - discount
= 55-11
=44
Now we need to find the tax
tax = new price * tax rate
= 44 * 5.5%
= 44 * .055
=2.42
The final price is the new price plus the tax
final price = new price + tax
= 44+2.42
=46.42
Therefore, Nya will pay $46.42 for the sweater if she buys it.
20 POINTS!
Determine the quotient, in simpify the rational expression x-1/6xy ÷ 5/2y.
A. 5x-5/15x
B. x-1/15x
C. 2xy-2y/30x
D. x-2/15xy
Answer:
B. x-1/15x
Step-by-step explanation:
Answer:
The answer to this question would be B. x-1/15x
Step-by-step explanation:Hope that this helps:)
La suma de las raíces del polinomioX²+5X+6 a) 6, b) 5, c) 2, d) 3
Respuesta:
- 5
Explicación paso a paso:
Dado el polinomio:
X² + 5x + 6
X² + 3x + 2x + 6 = 0
X (x + 3) +2 (x + 3) = 0
(x + 3) o (x + 2) = 0
Las raíces del polinomio son
x = - 3 o x = - 2
Tge sol si las raíces
-3 + - 2 = - 5
Any helpers ? Plss been struggling on this
Answer:
the answer is D less than or equal to
Step-by-step explanation:
13.At the Finch School bake sale, donuts sell
for $2 each muffins sell for $3 each. A
combined total of 104 donuts and muffins
are sold, resulting in $243 in sales. Which
of the following statements must be true?
a. 69 more muffins were sold than donuts.
b. 34 more muffins were sold than donuts.
c. 34 more donuts were sold than muffins.
d. 69 more donuts were sold than muffins.
Answer:
c)
Step-by-step explanation:
create a system of equations:
d + m = 104
2d + 3m = 243
now use substitution method based on 'd = 104 - m'
2(104 - m) + 3m = 243
208 - 2m + 3m = 243
208 + m = 243
m = 35
So, 35 muffins and 69 donuts were sold.
This is 34 more donuts than muffins.
Please help me!!! I will give brainiest
If I went to the store in a boat on a boat how cold was it true or false.
Answer:
Any temp less than 70 degrees is dangerous. So really, probably the worst thing about cold weather boating is the danger if you fall in. If it's really cold and you are bundled up, you don't have as much flexibility. If you have gloves on, you can't get the same grip.
Step-by-step explanation:
Hey mate here's your answer...
Please help me out i will mark brainliest i need help on this! Its plot dot and dot plotting!
Answer:
b
Step-by-step explanation:
the second one it should be hope's it helps
PLEASE HELP!! WILL GIVE BRAINLIEST AND 15 POINTS!!
Sarah is playing a game that requires each player to spin an arrow to one of four colors, equally divided: red, yellow, blue, or green.
What is the probability that Sarah will NOT land on red?
(please explain why)
Answer:
the probabily is 3/4 that she will not land on red
Step-by-step explanation:
there are three other colors, making red have a 3/4 chance of not being picked
Answer:
Answer:
3/4 that she will not land on red
Step-by-step explanation: im not completely sure :(
Marina babysits her neighbours' kids once a week and earns $40 each night. She loves coffee so she treats herself three times a week by buying a $5 latte at her favourite coffee shop. Marina wants to buy a new laptop for herself which will cost $800 and has already saved $200. How much money does Marina spend on coffee each week?
Answer:
She spends $15 per week on coffee
Step-by-step explanation:
Marina babysits her neighbours' kids once a week and earns $40 each night.
She buys coffee three times a week for $5.
She spends 3 *$5 per week on coffee
She spends $15 per week on coffee
c) How many times would you expect to roll a 5 when
a fair dice is thrown 3000 times?
Answer:
500
Step-by-step explanation:
The probability is 1/6.
So, find 1/6 of 3,000.
1/6 * 3,000 = 3,000/6 = 500
A 5-pound bag of dog food costs $2.10. What is the unit price?
per pound
Submit
Answer:
.42 per pound
Step-by-step explanation: