Answer:
43
Step-by-step explanation:
Substitute x = 3 into the expression, that is
5(3)² - 2 = 5(9) - 2 = 45 - 2 = 43
a ship moved 16 miles east, 21 miles west and 7 miles west where is the ship
Answer:
The ship is 12 miles west from where it started.
What is the slope of a line perpendicular to y - 2x + 4 = 0?
Answer: 1/2
Step-by-step explanation:
Opposite reciprocal
Uma tecelagem fabrica 2000 metros de comprimento de tecido com 2 metros de largura em uma semana, com 4 teares funcionando 8 horas por dia cada. Se duas máquinas forem desligadas, em quanto tempo ela fabricará 1500 metros de comprimento de tecido com 3 metros de largura e com as máquinas trabalhando 6 horas por dia cada?
A
15 dias
B
18 dias
C
21 dias
D
28 dias
5 - (x + 1) = 5x + 4
Answer:
x=0
Step-by-step explanation:
A 20 meter long cable is used to support a telephone, holding it perpendicular to the ground. If the cable forms a 60 degree angle with the ground, how high up the pole should the cable be attached?
please helppppppppp!!!!
which describes the correlation shown in the scatter plot?
a. there is a positive correlation in the data set.
b. there is a negative correlation in the data set.
c. there is no correlation in the data set.
d. more points are needed to determine the correlation.
Answer:
B
Step-by-step explanation:
The table represents a proportional relationship between the number of hours it shows h, and the number of inches of snow, s on the ground. Find the constant of proportionality
The constant of proportionality is.
The constant of proportionality is 4, and the relationship is given by s = 4h.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A variable can either be dependent or independent. A dependent variable depend on other variable while an independent variable does not depend on other variables.
Let h represent the number of hours and s represent the number of inches of snow on the ground. Since both variables are proportional, hence:
s = hk; where k is the constant of proportionality
Let us assume in the table, when h = 1, s = 4 hence:
s = hk
4 = k(1)
k = 3
s = 4h
The constant of proportionality is 4, and the relationship is given by s = 4h.
Find out more on equation at: https://brainly.com/question/13763238
#SPJ1
Ramon places a mirror on the ground 45 ft from the base of a geyser. He walks backwards until he can see the top of the geyser in the middle of the mirror. at that point, Ramon eyes are 6 ft above the ground and he is 7.5 ft from the mirror. Use similar triangles to find the geyser
Answer:
36 ft
Step-by-step explanation:
6/x=7.5/45
270=7.5x
x=36
In this exercise we have to have knowledge of triangles, so we can use the theory of similar triangles to find the value of X, like:
[tex]36 ft[/tex]
To use similar triangle theory, we have to make a rule of 3, that is:
[tex]6/x=7.5/45\\270=7.5x\\x=36[/tex]
See more about triangles at brainly.com/question/10951564
Ahmad rented a truck for one day. There was a base fee of $17.99, and there was an additional charge of 88 cents for each mile driven. Ahmad had to pay
$144.71 when he returned the truck. For how many miles did he drive the truck?
mile.
Answer:
266 miles
Step-by-step explanation:
(244.09-17.99)/0.85=266
The difference between a number and 8 is less than -15
Answer:
x-8<-15
Step-by-step explanation:
The adult height of a man is about 1.19 times his height at age 12. Miguel is 1.5 m tall at 12 years of age. What would his predicted height be as an adult?
Answer: 3.285?
I just multiplied 1.5 and 1.19, then added the product and his height at the age of 12 so, therefore i got 3.285 as a answer
Question 10 PLEASE HELP FAST ILL GOVE BRAINLIST AND EXTRA POINTS MAKE SURE YOU EXPLAIN YOURSELF
Answer:
D
Step-by-step explanation:
Hope this helps!! :D thanks!!
Answer:
D
Step-by-step explanation:
-14,-12,-10,-8,-6 what sequence is it.
arithmetic sequence
Step-by-step explanation:
Answer:
+2
Step-by-step explanation:
The numbers are increasing by 2 every time
Write an equation of the line that passes through (18, 2) and is parallel to the line 3y−x=−12
Answer:
[tex]y = \frac{x}{3} - 4[/tex]
I hope this helps!
what did he do wrong
Answer:
I think step 1 because 0.5m + 6 does not equal 20 which messed up the solution.
A customer purchased a total of 10 hats and scarves. Each hat cost $4.50 and each scarf cost $3.00. The customer spent $36.00 all together.
How many hats did the customer buy?
Enter your answer in the box.
hats
Answer:
4.8
Step-by-step explanation:
4.50 + 3.00 = 7.5
36.00 divided by 7.5 = 4.8
An item is regularly priced at %59 . It is on sale for 35% off the regular price. what is the sales price
Answer: 38.35%
Step-by-step explanation:
59%=59/100=0.59
0.59-0.35(0.59)=
0.59-0.2065=
0.5900-0.2065=
0.3835=38.35%
6th grade math help me plzz
Answer:
A-B really simple.
Step-by-step explanation:
I WILL GIVE BRAINLIEST
Select all the correct locations on the image.
Consider function f.
F(x) = x^3 + 2x^2 - 5x – 6
Select the locations of the zeros of function fon the coordinate plane. Then select the end behavior of its graph.
Answer:
C.
Step-by-step explanation:
A x approach positive infinity. f(x) approach positive infinity
Answer:
a bit late
use desmos, seriously a life saver
Step-by-step explanation:
If there are 800 students and 17/50 wear a green shirt, how many students are wearing a green shirt?
Answer: 272 students are wearing a green shirt.
Step-by-step explanation:
800/50 = 16
16*17 = 272
Solve for t.
7+ 4t 5t + 17
=
t =
Answer:
t = -3
Step-by-step explanation:
Simplify 7+4t+5t+177+4t+5t+17 to 24+9t24+9t.
24+9t=t
24+9t=t
2 Subtract 9t9t from both sides.
24=t-9t
24=t−9t
3 Simplify t-9tt−9t to -8t−8t.
24=-8t
24=−8t
4 Divide both sides by -8−8.
-\frac{24}{8}=t
−
8
24
=t
5 Simplify \frac{24}{8}
8
24
to 33.
-3=t
−3=t
6 Switch sides.
t=-3
t=−3
I need help solving this ASAP
A boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h. What is the boat's speed (in still water)?
Answer:
A)63miles per hour.
B)27 miles per hour
Step-by-step explanation:
HERE IS THE COMPLETE QUESTION
boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h. What is the boat's speed (in still water)??b) How fast does the current in the river flow?
Let the speed of boat in still water = V(boat)
speed of current=V(current)
To calculate speed of boat downstream, we add speed of boat in still water and speed of current. This can be expressed as
[V(boat) +V(current)]
It was stated that it takes 1hour for the
boat to travels between two points of 90 mi apart downstream.
To calculate speed of boat against current, we will substact speed of current from speed of boat in still water. This can be expressed as
[V(boat) - V(current)]
and it was stated that it takes 2 1/2 for return trip against the Current
But we know but Speed= distance/time
Then if we input the stated values we have
V(boat) + V(current)]= 90/1 ---------eqn(1)
V(boat) - V(current) = 90/2.5----------eqn(2)
Adding the equations we have
V(boat) + V(current) + [V(boat) - V(current)]= 90/2.5 + 90/1
V(boat) + V(current) + V(boat) - V(current)]=90+36
2V(boat)= 126
V(boat)=63miles per hour.
Hence, Therefore, the speed of boat in still water is 63 miles per hour.
?b) How fast does the current in the river flow?
the speed of the current in the river, we can be calculated if we input V(boat)=63miles per hour. Into eqn(1)
V(boat) + V(current)]= 90/1
63+V(current)=90
V(current)= 27 miles per hour
Hence,Therefore, the speed of current is 27 miles per hour.
What is the diameter of a sphere with a volume of 15276 cm", to the nearest tenth
of a centimeter?
Answer:
15.4
Step-by-step explanation:
15276 = 4/3 πr³
11457 = πr³
3646.88 = r³
15.4 = r
Answer:
30.8
Step-by-step explanation:
y=2,y=-1/2 thats the equation but it told me to write more idk why
More information is needed.
help again please thank you!
A median of a triangle always bisects the angle of the triangle that it intersects. true or false
Answer: True
Step-by-step explanation: Every triangle has exactly three medians, one from each vertex, and they all intersect each other at the triangle's centroid. In the case of isosceles and equilateral triangles, a median bisects any angle at a vertex whose two adjacent sides are equal in length. The concept of a median extends to tetrahedra.
Answer:
True
Step-by-step explanation:
HELP!!!!!!!!!!GIVING BRAINLIEST-For each diagram, state the relationship between the angles indicated and then find the measure of <1.
Answer:
a. corresponding angles
b. alternate interior angles
c. opposite angles
d. cointerior angles
a. = 127
b. = 65
c. = 179
d. 180-41= 139
Solve for all values of x by factoring.
x^2– 25 = 0
Answer:
Step-by-step explanation:
a²-b²=(a+b)(a-b)
x²-25=0
x²-5²=0
(x+5)(x-5)=0
x=-5,5