Evaluate the following expression if x = 3. x2
Answer:
6
Step-by-step explanation:
x2
x=3
sub 3 into x
(3)2
=6
In a right triangle, a and b are the lengths of the legs and c is the length of the hypotenuse.
If b = 6.8 centimeters and c = 9.7 centimeters, what is the perimeter? If necessary, round to
the nearest tenth.
Answer:
P=23.4
Step-by-step explanation:
so using the pytogoren theroum
c2-b2= a2
so a= 6.9
so P= 6.9+6.8+9.7=23.4
if my answer helped please mark as brainliest.
The perimeter of the square below is 116 m. What is the value of a?
5a +9
(5a+9)4=116
20a+36=116
20a=116-36
20a/20=80/20
a=4
simplify 12 + -24 ÷ -6 * 2
Show stack method
Answer:
4
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
12+4 x 2
12+8= 20
does any one wanna play r.oblox?
who likes to play ragdoll?
Answer:
Me!
Step-by-step explanation:
MyLifeIsFabulous
A bus drives for 3 1/2 hours at an average speed of 56mph.
How far does the bus drive?
Answer:
196 km
Step-by-step explanation:
Distance = speed x time
So to work it out, it would be 3.5 x 56
= 196km
Answer:
A bus drives for 3 1/2 hours at an average speed of 56mph.
To Find :
How far does the bus drive?
Step-by-step explanation:
Times of journey(T)=3 1/2 =7/2hours
Average speed of bus(v)=56mph
We know the formula:
Average speed (v)=total distance (d)/Time(T)
So:
Total distance (d)=qverage speed(v)×time(t)
Total distance (d)=56×7/2
Total distance(d)=28×7=196 miles
It means distance travel by bus is 196 miles.
I hope it's helpful!
The Beauty Mart offers a 9-ounce bottle of shampoo for $9.79. It is advertising a 34-ounce bottle of the same brand at a special price of $36.36. Which bottle is the better buy?
Answer:
the 34 ounce bottle
Step-by-step explanation:
because one ounce out of the 34 ounce bottle equals $1.06 and one ounce out of the 9 ounce bottle equals $1.09 so essential buying the 24 ounce bottle you would be getting more for your money
Please Help me! I don't understand and am giving up the rest of my points for help!
Answer:
x=4 y=6
Step-by-step explanation:
Factorise 3y^3-4xy+2y
Answer:
3y^3-4xy+2y
y(3y²-4x+2)
please it’s due in 30 minutes i will give brainly
Answer:
Area = 113.01 m²
Step-by-step explanation:
From the picture attached,
Area of the quadrilateral ABCD = Area of triangle ABC+ Area of triangle ACD
Construction to be done → Draw a perpendicular from a point A to the opposite side CD
Area of Δ ABC = [tex]\frac{1}{2}(AB)(BC)[/tex]
= [tex]\frac{1}{2}(12)(10)[/tex]
= 60 m²
Area of triangle ACD = [tex]\frac{1}{2}(AE)(CD)[/tex]
From ΔAEC,
sin(29°) = [tex]\frac{AE}{AC}[/tex]
AC = [tex]\sqrt{(12)^2+(10)^2}[/tex] [By Pythagoras theorem]
AC = [tex]\sqrt{244}[/tex]
AC = 15.62 m
Therefore, AE = 15.62sin(29)
= 7.57 m
Area of ΔACD = [tex]\frac{1}{2}(7.57)(14)[/tex]
= 53.01 m²
Area of ABCD = 60 + 53.01
= 113.01 m²
Becky is using the expression 2z + 3 to represent the number of chairs in her classroom. There are twice as many chairs as tables, and there are three extra chairs in the back. What does z represent?
The number of chairs.
The number of tables.
The number of chairs at tables.
The number of chairs and tables.
Answer:
The number of chairs
Step-by-step explanation:
The equation is 2z + 3
2 ( = multiply by)
z ( # of chairs)
+3 ( the 3 extra chairs in the back)
Answer:
The number of tables
Step-by-step explanation:
Sens there is twice as many chairs as tables, the number 2 represents the chairs. The 3 represents the 3 extra chairs in the back. so the only logical object to represent z is the number of tables.
One rabbit eats 8 carrots every day.
How many carrots does a rabbit eat in 7 days?
Answer:
56 carrots
Step-by-step explanation:
Because 7 x 8 is 56
Amanda saves $15 per week for her summer vacation. Write an equation that she can use to.Find S, her savings after W weeks
Answer:
S= 15W
Step-by-step explanation:
Given data
We are told that Amanda saves $15 per week for her summer vacation
Let her total savings be S
and the number of weeks be W
Hence the expression for her savings is
S= 15W
Mary bought a 7lb bag of flour. She used 1/3 of the bag to bake wedding treats.
Answer:
she is left with 4.67 LB of flour.
Step-by-step explanation:
7 divided by 3 = 2.3333333
2.3333333 x 2 = 4.67
00:00
Select all the fractions that are equivalent to 2 /
5
Use the area models to help.
Answer:
this doesnt make sense but the answer is
rcpl 2/5 = 5/2 = 2 1/2
Step-by-step explanation:
2 1/2
Answer:
hfrrgiooy3decctvr cb muh yt? hmm
An expression is shown 7/4 - ?/7 = 1 1/28 What is the missing number?
Answer:
i pretty sure the missing number is 4
Step-by-step explanation:
what is (-4)(-1)(-3)
Answer:
-12
Step-by-step explanation:
multiplication
Answer:
-12
Step-by-step explanation:
-4 x -1 x -3
4 x -3
=-12
¿Cuál es la suma de la medida de los ángulos interiores de un decágono?
Answer:
La suma de las medidas de los ángulos interiores de un decágono (polígono de 10 lados) es 1,440.
Solve for y
y - 2 = 2x
Answer:
y = 2x + 2
Step-by-step explanation:
Add two to both sides.
Please add a number line of you can!
Answer:
574
Step-by-step explanation:
Montana is known for having very chilly winters. One night, the temperature was falling by 2 degrees Fahrenheit each hour. At sunset, the temperature was -5 degrees Fahrenheit. How many hours will it take for the temperature to reach -19° F?
Answer:
7 hours
Step-by-step explanation:
We are given that
At sunset, the temperature=-5 degrees Fahrenheit
Each hour, temperature falling=2degrees Fahrenheit
We have to find time taken to reach the temperature -19° F.
Let x be the time time taken to reach the temperature -19° F
According to question
[tex]-5+x(-2)=-19[/tex]
Where we taking 2 negative because temperature decreases.
[tex]-5-2x=-19[/tex]
[tex]-5+19=2x[/tex]
[tex]14=2x[/tex]
[tex]x=\frac{14}{2}[/tex]
[tex]x=7[/tex]
Hence, it will take 7 hours for the temperature to reach -19° F.
hii please help i’ll give brainliest if you give a correct answer please please hurry it’s timed
WILL MARK BRAINLIST PLS HELP
The letters for the word TENNESSEE are written on cards and then placed in a basket. What is the probability that on the first draw an E is picked, replaced, and then an S is picked?
6/81
8/81
6/18
5/18
Answer:
The second option - 8/81
Step-by-step explanation:
Answer:
below
Step-by-step explanation: 6/81
help please !!!!!!!!!!!!
Answer:
A & B
Step-by-step explanation:
TBH I was kind of getting that is was D, but follow your gut I just know its defiantly A
Answer:
a and b
Step-by-step explanation:
Given the linear equation, y = 7x + 5:
A} Write an equation of a line parallel to this line.
Answer:y = 7x + 5
Step-by-step explanation: does it matter which point it goes through?
If these two shapes are similar, what is the measure of the missing length b?
Answer:
B = 7mm
Step-by-step explanation:
This is probably an enlargement problem.
To solve this:
the blue triangle has all of it's measurements you need. Let's start with that.
6/36 =
We know that one side, the bottom side of the green triangle is 42mm.
6/36 = b/42
We could simplify 6/36 into 1/6
1/6 = b/42
AHA! the denominators are easy! 6 times 7 is equal to 42, so 1 times 7 should equal b!
1/6 = 7/42
Check:
6/36 = b/42
36b = 6*42
36b = 252
b = 252/36
b = 7
So yes! B is 7 mm. Pls mark me brainliest, as I never have a single brainliest.
a table was listed $400 after discount.And the net price was $450.what is the rate discount and marked price?
Answer:
Your answer
Discount rate = 11.11%
Mark it as Brainlist. Follow me for more answer.
Step-by-step explanation:
Find, to the nearest foot, the length of the diagonal of a square whose side is 10 feet.
Draw a square to help solve the problem. (Remember to round answer to the nearest
foot, no decimals)
72 precent is equal to 80% of a number n, what is n? write your answer as a decimal
Answer:
n=90
Step-by-step explanation:
80% as a decimal is 0.80
0.80n = 72
n = 72/0.80
n = 90
Not my work
What is the scale factor of the dilation shown?
(Help please) geometry