Answer:
A:-2x-10
Step-by-step explanation:
Think of it like this for the y coordinate:
y=-2x-10
y=-2(-3)-10
y=6-10
y=-4
you have now found the y coordinate and by this point should be able to tell without doing the rest but if you are unsure you can do this now that you know y:
-4=-2x-10
+10 to both sides
(6=-2x)/2
(-x=3)*-1 as x is negative
x=-3
so now you know the x and y coordinate that it can pass through which proves that this is the correct choice.
A bouncing tennis ball starts at a height of 6 feet off of the ground, this is 72 inches off
of the ground. Each time it bounces it comes back up to 2/3 of the height. Which
answer choice shows the correct explicit equation in inches, for x amount of bounces?
what’s the explicit equation
Answer:
2/3 x 6
Step-by-step explanation:
Dante slices potatoes at a steady pace to make fries. By the time he finishes, he has sliced 102 potatoes in 12 minutes. What is Dante's unit rate?
Answer: Dante slices 8.5 potatoes per minute.
Explanation: To find the unit rate look at the steps below.
102:12
12/12 gives us 1 minute and 102/12 gives us 8.5 We divide both numbers by 12 because if we divide 12 by 12 we get one minute and when we divide the other side it tells us how many potatoes Dante slices in one minute.
VJ 15 TL
ППОпрот)
. Which of the following is a zero of the polynomial f(x)= x5+2x4+x+2?
A. I
B.-1
C.-2
D. 2
Answer:
x = -2 is a function
Step-by-step explanation:
To get which is a zero, we have to look at one value of x which when substituted into the polynomial will give -1
we have this as:
Let us try the value x = -2
-2^5 + 2(-2)^4 - 2 + 2
= -32 + 32 - 2 + 2 = 0
This means that the term x = -2 is a root of the equation
12) A new amusement park decides to offer its visitors a choice between two plans. With Plan 1 they pay $6 to enter
the park and they pay $3.50 for each ride. With Plan 2 they pay $12 to enter the park and $1.50 for each ride. Write an
equation then find the number of rides when the cost will be the same. What will that cost be?
9514 1404 393
Answer:
3 rides$16.50Step-by-step explanation:
The plan 1 cost for x rides will be ...
y = 6 + 3.50x
The plan 2 cost for x rides will be ...
y = 12 + 1.50x
These costs will be equal when ...
y = y
6 + 3.50x = 12 + 1.50x . . . . . substitute for y
2.00x = 6 . . . . . . . . . . . . . subtract 6+1.50x
x = 3 . . . . . . . . . . . . . . . divide by 2
For 3 rides, the cost will be the same.
__
For 3 rides the cost is ...
y = 6 + 3.50(3) = 6 + 10.50 = 16.50
The cost for 3 rides will be $16.50 for either plan.
A middle school principal wants to change the lunch menu at the school. The principal surveys
the students to determine how the students would feel about the changes. Which survey
method will best produce the representative sample?
please help with this, I don't really understand it and I need to turn in my homework by tonight! thanks in advance
Answer:
Explained below
Step-by-step explanation:
Hi! Do you know the similar triangle rules?
I will prove one for you and you can try the rest
ΔCBD ~ ΔABC proof:
st | r
1) ΔABC is right Δ | Given
2) CD is alt to hyp | Given
3) m∠C = 90° | def right Δ
4) m∠CDB = 90° | def alt
5) m∠B = m∠B | reflexive property (more triangles share ∠B)
6) ΔCBD ~ ΔABC | AA (since two angles are equal, the two triangles are similar)
We do not need to prove all three angles as similar since if two corresponding angles of two triangles are congruent, the third has to be equal (since the total sum of angles is 180° in a triangle)
You can translate the statement reasoning into a paragraph
I hope this helps! If not, let me know and I will try and explain further :)
Juan sells a boat that he bought 5 years ago. He sells it for 60% less than he originally paid for it. If the original cost is b, write an expression that shows how much he sells the boat for
Answer:
b - 0.60b
= 0.40b
Step-by-step explanation:
The expression would be
here the original cost is b
And Juan sells it for 60% less than original price
So the expression is
= b - 0.60b
= 0.40b
This would be the expression that shows the selling price of the boat
please help me ( show ur work it’s multiple choice ):)
if i have 7 quarters, 13 nickles, 23 pennies, 6 dimes and two dollar bills, how much money do i have
Answer:
$5.23
Step-by-step explanation:
(7x.25)+13(.05)+.23+6(.10)+2.00=1.75+.65+.23+.60+2.00=$5.23
Answer:
$5.23
Step-by-step explanation:
7 quarters: $1.75
13 nickels: $0.65
23 pennies: $0.23
6 dimes: $0.60
2 dollar bills: $2
Total: $5.23
Liam practices free throws every morning before he goes to school. This morning, Liam made 42 out of 50 free throws. Which equation can be used to find x, the percent of free throws Liam made?
Answer:
84%
Step-by-step explanation:
Given that :
Total number of throws = 50
Total throws made = 42
The percentage throws made, x :
x = (number of throws made / total throws) * 100%
x = (42 / 50) * 100%
x = 0.84 * 100%
x = 84%
describe and correct the error in solving the proportion?
Answer: Choice B
They did not perform the cross multiplication properly
The correct step should be m*24 = 8*15 which solves to m = 5
========================================================
Explanation:
In general, if we had the equation A/B = C/D, then it cross multiplies to A*D = B*C. We refer to this as cross multiplication because of the shape made when we connect the terms (to figure out what multiplies with what). The diagram below shows what I mean.
So that's why m/8 = 15/24 cross multiplies to m*24 = 8*15
Simplifying things a bit leads to 24m = 120. Then we divide both sides by 24 to fully isolate m and we get m = 120/24 = 5. Therefore, m = 5.
If a 4 year old accidentally ingested forty-two 5gr acetaminophen tablets,
how many milligrams did the child ingest?
Answer:
210,000mg of acetaminophen
Step-by-step explanation:
42 × 5= 210
210 grams
1 g= 1000mg
210g=210,000mg
Hope this helps! :)
PLEASEEE i REALLY need help!! This is due tonight!!
1. Think of two things that you can measure. Give one that requires high precision, or a low level of uncertainty. Give another that can have lower precision, or a higher level of uncertainty.
2. Explain why you made your choices. Why does one measurement need to be more precise than the other?
Problem 1
Two things you could measure is a person's height and the speed needed to reach the planet Mars. The person's height can be measured with a low level of precision, which means we don't need to be that accurate. We could say "that person is about 6 feet tall" and whoever is listening would get a sense of their height. In contrast, we need high precision for a rocket speed to Mars because getting this figure wrong would likely cause disaster down the road. Very complicated mathematics is essential to make sure we hit the target required in space.
===============================================
Problem 2
As mentioned, we need high precision when it comes to anything dealing with space travel. If the calculations are wrong, then the spacecraft could crash somehow. As one example where things went wrong, engineers used the wrong values and the Mars lander ended up crashing into the planet rather than landing safely. The high cost of such space exploration missions means that it's very crucial to get precise values as much as possible, to as accurate as possible. Things like discussing a person's height isn't that essential to be very precise as we can just relay estimates to whoever we're talking to. This informal setting doesn't demand as much accuracy compared to something like a rocket launch.
z varies jointly with x, and y, and z=7 when x= 2, y= 2
Answer:
56
Step-by-step explanation:
Complete question:
Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)
If z varies jointly with x, and y, this is expressed as;
z = kxy
If z=7 when x= 2, y= 2
7 = k(2)(2)
7 = 4k
k = 7/4
To get z when x= 4 and y = 8
z = kxy
z =7/4 (4)(8)
z = 7*8
z = 56
Hence the value of z is 56
Review the diagram below.
Apply the properties of angles to solve for the missing angles.
Angle BCA is
Answer:
the asnwer is 35°
Step-by-step explanation:
you can said bca and its gonna give you that
Graph the function represented in the table on the coordinate plane
(-2,-3), (-1,-1), (0,1) (1,3) (2,5)
Hello, the graph sould be like this. Just remember, if you want to draw a graph, you should know the x and y state. x is from left and y is from right.
A match box dimension is 4cm×2.5cm×1.5cm.What will be volume of a packet containing such 6 match boxes?How many such packets can be placed in a cardboard box whose size is 60cm×30cm×24cm?
A cell phone company offers two plans for unlimited calling. The first plan has a monthly charge of $25 and 8.08 per text message. The second plan has a monthly charge of
$20 and $.12 per text message. For how many tect messages would the two plans have an equal cost? (What is the solution to this system? X represents the #of text
messages and represents the total costs)
• 66
• 175
• 125
• they will never cross
Please help! Use the model to figure these out. Will mark brainliest if you answer both questions correctly.
Find the 8th term for the series 2, 8, 32, 128, …
A. 8192
B. 16384
C. 6784
D. 32768
Answer:32,768
2*4=8*4=32*4=128
So we have to multiply by 4
128*4=512 5th term
512*4=2048 6th term
2048*4=8192 7th term
8192*4=32768 last term
Multiply.
Your answer should be a monomial in standard form.
(4z^3)(-3z^3)
The answer you are looking for is -12z^6. To find this answer, you first multiply the two values (4 and -3).
4 × -3 = -12
Next, you multiply the variables and exponents. When multiplying with exponents, you simply just add the exponents together. For this instance, simple just add z3 and z3 to get z^6.
Thus meaning your final answer as a monomial is -12z^6. Here's an image to show how i solved the problem. I hope this helps!!
can someone plz help me
Answer:
x is less than or equal to negative 14.
Step-by-step explanation:
so for now we should pretend that the greater than or equal to is an equal sign, and simplify the problem to get x alone on a side
remove 5 from each side
-x/3=1/3-5
-x/3=14/3
multiply both sides by 3
-x=14
x=-14
so we can now replace the equal sign with the equal or greater to, so x is less than or equal to -14
What is the reason for 4=6, m || n , 4=2 and 2=6.
Answer:
4 congruent to 6 given
M || N converse of alternate interior angles of parallel lines
are congruent
4.
Graph the relation shown in the table. Is the relation a function? Why or why not?
(-5, -5)
(-3, -3)
(1, 1)
(2, 2)
Yes; no vertical line passes through two graphed points.
No; a vertical line passes through two graphed points.
Yes; no horizontal line passes through two graphed points.
No; a horizontal line passes through two graphed points.
Answer:
A. Yes; no vertical line passes through two graphed points
Step-by-step explanation:
In a survey of U.S. Adults, 16% say they have had someone take over their email accounts without their permission. You randomly select 250 U.S. Adults and asked them whether they have had someone take over their email accounts without their permission. Find the probability that the number of U.S. Adults who say they have had someone take over their email accounts without their permission is : a. At most 40 b. Less than 45 c. Exactly 48
Answer:
a. At most 40
Step-by-step explanation:
If we take the survey that was done as a basis then we would use the 16% that was obtained as the number of overall US adults that have had their accounts used without their permission. Assuming that the 250 selected individuals were selected at random and without bias then those 250 would also be representative of the entire population. Therefore, we would simply need to multiply the number of selected individuals by the percentage in decimal form.
16 / 100 = 0.16
250 * 0.16 = 40
Finally, we can see that roughly 40 individuals would have had their email used without permission.
Identify the coefficient and constant in the expression: 3 + p - 4k
Answer:
4 is the co efficient and 3 is the constant
Co efficients are when a number is close to a variable, constants are a number by itself.
Answer:
The coefficient is 4The constant is 3Step-by-step explanation:
The coefficient is the number that is right next to a variable. So, the coefficient in this expression, would be 4 because it's right next to k.The constant is a number that it by itself. So, the constant in this expression, would be 3 because it's by itself (no variable attached to it).I hope this helps!
6) (4 x 2)5 + 6^2 - 4 =
plz help
i am in sixgrade
PLEASE HELP
Sit-up
Push-up
Plank
Arm
circles
V-stretch
which event has a theoretical probability
of?
A. spinner landing on either sit-up
or V-stretch
B. spinner landing on push-up
c. spinner landing on either sit-up.
plank, or arm circles
D. spinner not landing on sit-up
Answer:
A
Step-by-step explanation:
Answer A has two of the five possibilities, and each section is equal so there is an equal probability for each. Add up the two possibilities for 2/5.
The original price of a cell phone was $250. And its price was marked down to $218 during the holiday. What was the percentage of discount for the cell phone during the holiday? %
Answer:
I would say almost 15% the price dropped $32
the options are:
greater than..
less than..
less than or equal to..
greater than or equal to.. plz help
Answer:
P is greater than -8
P is less than -5
When the circle is hollow that means its never equal to
When the circle is full it means its equal to
it matters which direction the line is going
if it goes to the right and it is hollow that it is greater than
if goes to the left and it is hollow it is less than the number the circle is on
If the circle is full when it goes to the right then that means its greater than or equal to from the number its going from
same thing to the left