Answer:
(c) 3 km
Step-by-step explanation:
Speed in still water: 8 km/h
Speed of river: 2 km/h
Speed downstream: 8 km/h + 2 km/y = 10 km/h
Speed upstream: 8 km/h - 2 km/h = 6 km/h
total time both ways: 48 minutes = 48/60 hour = 0.8 hour
time to go upstream: t
time to go downstream: 0.8 - t
speed = distance/time
s = d/t
d = st
Upstream:
d = st
d = 6t
Downstream:
d = st
d = 10(0.8 - t)
The distance upstream and downstream is the same.
6t = 10(0.8 - t)
6t = 8 - 10t
16t = 8
t = 0.5
d = 6t = 6(0.5)
d = 3
Answer: (c) 3 km
An item has a listed price of $95. If the sales tax rate is 9%, how much is the sales tax (in dollars)?
Someone please help whats the answer
8+1/2(12)=x
Solve please
Answer:
8+ 1/2 (12) = x
8+ 6 = x
Therefore x = 14
Answer:
The answer is X = 14
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
Step 2: Flip the equation.
I f m ∠ P i s t h r e e l e s s t h a n t w i c e t h e m e a s u r e o f ∠ Q , a n d ∠ P a n d ∠ Q a r e s u p p l e m e n t a r y a n g l e s , f i n d t h e m ∠ P .
Answer:
The value of angle P is 119 degrees
Step-by-step explanation:
When two angles are supplementary, it means that they add up to be 180 degrees. For example, if we have two angles only on a straight line, then both angles are supplementary angles.
Now, the information we have from the question is that angle P is three less than twice the measure of Q.
What this mean is that if Q is x, then P is 2x-3
So let’s add both to equal 180 since they are supplementary;
x + 2x -3 = 180
3x -3 = 180
3x = 180 + 3
3x = 183
x = 183/3
x = 61
This is the value of Q;
The value of P which we are asked to look for is 2x -3 = 2(61) -3 = 122 -3 = 119 degrees
...............................
Which inequalities can be used to find the solution set of the following inequality? Check all that apply. |2x – 5| Greater-than-or-equal-to 8 (2x – 5) Greater-than-or-equal-to 8 (2x – 5) Less-than-or-equal-to 8 (2x + 5) Greater-than-or-equal-to 8 –(2x – 5) Greater-than-or-equal-to 8 –(2x + 5) Greater-than-or-equal-to 8
Answer:
its 1 and 4
1. (2x – 5) ≥ 8
4. –(2x – 5) ≥ 8
Step-by-step explanation:
i just did the test
Answer: A,D
Step-by-step explanation:
8x-3x+2=______ I need the equation to be a no solution
F(x)=-2x^2 -5x+1
H(x)=3(x+3)^2-11
H(f(-1))=?
A.132
B. 136
C.140
D.144
Answer:
B
Step-by-step explanation:
So we have the two functions:
[tex]f(x)=-2x^2-5x+1\text{ and } h(x)=3(x+3)^2-11[/tex]
And we want to find:
[tex]h(f(-1))[/tex]
So, find f(-1) first. Substitute -1 into f(x):
[tex]f(-1)=-2(-1)^2-5(-1)+1[/tex]
Square:
[tex]f(-1)=-2(1)-5(-1)+1[/tex]
Multiply:
[tex]f(-1)=-2+5+1[/tex]
Add:
[tex]f(-1)=4[/tex]
Now, substitute this into h(f(-1)):
[tex]h(f(-1))=h(4)[/tex]
So, substitute 4 into h(x):
[tex]h(4)=3(4+3)^2-11[/tex]
Add:
[tex]h(4)=3(7)^2-11[/tex]
Square:
[tex]h(4)=3(49)-11[/tex]
Multiply:
[tex]h(4)=147-11[/tex]
Subtract:
[tex]h(4)=136[/tex]
So, our answer is B.
And we're done!
POSSIBLE POINTS: 1
Which of the following situations involve opposite quantities combing to make 0 ?
Stella has a new piggy bank. She adds 3 quarters on Tuesday and then adds another 3 quarters on Thursday.
Devon opens a new checking account with $30. His first purchase made with his new debit card, totals $28.
Joe makes 1 1/2 liters of lemonade and drinks it all during the afternoon.
Brittany is writing a novel. She wrote 4 new pages to finish Chapter 1. When she reviews Chapter 1, she discards these 4
pages and an additional 4 pages.
Answer:
2) Joe makes 1 1/2 liters of lemonad and drinks it all during the afternoon.
Step-by-step explanation:
1.5 - 1.5=0
Diamond bought a few swirl marbles and divided it equally among four of her friends and her brother, Jordan. While playing, Jordan lost 4 marbles and has only 8 marbles at present. Find how many marbles Diamond bought in all.
Answer:
45?
9 marbles x 5 (four of her friends plus jake)
Step-by-step explanation:
Wich of the following numbers is larger than 4 1/4 but smaller than 4 3/4
Answer:
4 2/4
Step-by-step explanation:
If you only want the answer in whole number and quarters, that's the only answer. Otherwise, it could be a lot more answers. Let me know if this helps! :)
A rectangle has a height of 7a² and a width of a4 + 5a2 + 4.
Express the area of the entire rectangle.
Your answer should be a polynomial in standard form.
Answer:
[tex]( {7a}^{2} \times {a}^{4} ) + ({7a}^{2} \times {5a}^{3}) + ( {7a}^{2} \times 4) = {7a}^{6} + {35a}^{5} + {28a}^{2} [/tex]
What is the answer to X(x+7)
Answer:
[tex] \boxed{ \bold{ \boxed {\huge{ \sf{ {x}^{2} + 7x}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{x(x + 7)}[/tex]
Distribute x through the parentheses
[tex] \dashrightarrow{ \sf{x \times x + x \times 7}}[/tex]
[tex] \dashrightarrow{ \boxed{ \sf{ {x}^{2} + 7x}}}[/tex]
Hope I helped!
Best regards! :D
What is the slope of the line through (-7,-2) and (-6, 7)?
Choose 1 answer:
1
9
B
-9
9
Answer:
9Step-by-step explanation:
Slope is rise over run or change y/change x.
7 - -2 = 9
-6 - -7 = 1
Slope = 9/1 or 9
___________________________________________________I AM ALWAYS HAPPY TO HELP :)What is the product?
(y^2+3y+7][8y^2+y+1)
Answer:
8 y^ 4 + 25 y^ 3 + 60 y^ 2 + 10y + 7
Hope this helps!
Answer:
8 y^ 4 + 25 y^ 3 + 60 y^ 2 + 10y + 7
Step-by-step explanation:
edge 2021
Solve for x.
[tex] - 2(6 + x) = 18 - 3x[/tex]
x = [?]
Find the distance between each pair of points (-2,3) , (-7, -7)
Answer:
D = [tex]5\sqrt{5}[/tex]
Step-by-step explanation:
[tex]d= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\d= \sqrt{(-7-(-2))^2+(-7-3)^2} \\d= \sqrt{(-5)^2+(-10)^2} \\d= \sqrt{25+100} \\d= \sqrt{125} \\d= 5\sqrt{5}[/tex]
What are the equivalent expressions for aº and a " ? Why do
these rules work?
Segment AB is congruent to segment AB. This statement shows the ______ property. reflexive symmetric transitive substitution
Answer:
the answer is reflective
Step-by-step explanation:
Answer:
A). reflexive
Step-by-step explanation:
The correct answer is reflexive. I know because I got it right on the Edge quiz. Trust me!
Which two numbers of the given data set have the same absolute value? Explain your answer in full sentences.
-5, 5, -3, 8
pls help. ;)
Answer:
The answer is -5 and 5 because when you do absolute value if there is a negative number then it turns into a positive number. Negatives will always turn out as positives when doing absolute value. :)
Step-by-step explanation:
Answer: the two numbers that have the same absolute value is -5, and 5.
Step-by-step explanation:
Absolute will just make any negatives to positive.
So, the absolute value of -5 is 5, or the absolute value of -3, is 3.
If it's already positive, then nothing happens; it stays the same
So, the absolute value of 8 is 8, nothing is changed.
Nerissa has 5 pink bows,1 blue bow and 4 purple bows in a box. She will randomly choose 1 bow form the box.
What is the probability nerissa will choose a purple bow?
What is 13/100 in simplest form?
Answer:
0.13
Step-by-step explanation:
HELP I'M GONNA FAIL
Answer:
1/10
Step-by-step explanation:
7000/70000=1/10
First step in copying an angle?
Answer:
Make a point P that will be the vertex of the new angle.
From P, draw a ray PQ. ...
Place the compasses on point A, set to any convenient width.
Draw an arc across both sides of the angle, creating the points J and K as shown.
Step-by-step explanation:
These are the steps to copying an angle
I hope this helps you :)
Answer:
make a point p
hope this helps
what is y 5(y -10)=-5
Answer:
y=9
Step-by-step explanation:
5(y-10)=-5
We move all terms to the left:
5(y-10)-(-5)=0
We add all the numbers together, and all the variables
5(y-10)+5=0
We multiply parentheses
5y-50+5=0
We add all the numbers together, and all the variables
5y-45=0
We move all terms containing y to the left, all other terms to the right
5y=45
y=45/5
y=9
The value of y = 9 is correct. Therefore, the solution is y = 9.
To solve the equation 5(y - 10) = -5 for y, follow these steps:
Step 1: Distribute the 5 on the left side of the equation:
5y - 50 = -5
Step 2: Move the constant term to one side by adding 50 to both sides:
5y - 50 + 50 = -5 + 50
Step 3: Simplify the left side and evaluate the right side:
5y = 45
Step 4: Isolate y by dividing both sides by 5:
5y / 5 = 45 / 5
Step 5: Simplify and calculate y:
y = 9
The solution to the equation is y = 9. To verify, substitute y with 9 in the original equation:
5(9 - 10) = -5
5(-1) = -5
-5 = -5
Since both sides are equal, the value of y = 9 is correct. Therefore, the solution is y = 9.
To know more about Distribute:
https://brainly.com/question/30423130
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Factor each Polynomial. 3x² + 28x + 32=
[tex]\text{Hello! :)}[/tex]
[tex]\large\boxed{(3x + 4)(x + 8)}[/tex]
[tex]\text{Factor the polynomial:}\\3x^{2} +28x +32\\\\\text{Find two numbers that multiply into 32 and sum up to 28.}\\\text{Take into account the leading coefficient of 3:}\\\\\text{The numbers 4 and 8 work; arrange them so that they sum up to 28:}\\\\(3x + 4)(x + 8)[/tex]
help..........me .................
Answer:
good morning foul human i cannot help you because i cant see your images if you could type them out i might have enough brain cells left to help you adios amigo
Step-by-step explanation:
() c=3
[tex] {3}^{a} = \frac{1}{9} [/tex]
[tex] {3}^{b} = 9 \sqrt{3} [/tex]
[tex] {3}^{c} = \frac{1}{ \sqrt{3} } [/tex]
Work out the value of a + b + c
2x^3 + x^2 – 7x – 6 divided by 2x +3
Answer:
x^2 -x -2
Step-by-step explanation:
Use polynomial long division.
0 + x^2 -x -2
___________________________________
(2x+3) | 2x^3 +x^2 -7x -6
-2x^3 -3x^2
_________
-2x^2 -7x
+2x^2 +3x
__________
-4x -6
+2x +6
_______
0
We are solving for #4
Answer: 3.50p + 5.50p +6 = 51; 61
Answer: 5 people
Step-by-step explanation:
For this word problem, we can use the description in the problem to construct an equation. Let's use x for number of people.
3.5x+5.5x+6=51 [combine like terms]
9x+6=51 [subtract both sides by 6]
9x=45 [divide both sides by 9]
x=5
There were 5 people that went to the fair.
I really need help on this