Answer:
I solved it and got 134/7
you do 90 sit-ups in 2 minutes .Your friend does 126 sit-ups in 2.8 minutes .Do these rates form a proportion?
Brainiest
Answer:
Yes
Step-by-step explanation:
90/2 = 45
126/2.8 = 45
Therefore these rates do form a proportion
Step-by-step explanation:
so we will find the number of sit-ups the friend should do, if it is a direct proportion
let the number of friend's sit-ups be x
2 : 2.8
90 : x
cross multiply
we get x=126 sit-ups
so the rates do form a (direct) proportion
t - 7 for t= 20
it’s for math
Answer:
20-7=13
Step-by-step explanation:
If t is 20 then you just do 20-7
Answer:
t-7=13
Step-by-step explanation:
If t =20 then your equation is 20-7.
80 students each study one of three languages. 31 study french. 28 study German. 21 study Spanish. One student is to picked at random Write down the probability that the student picked french
Answer:
if it random then I think that the student prob. is 1/3 because there are three options
Step-by-step explanation:
Given the graph, determine whether (a) the degree is even or odd and (b) the leading coefficient is positive or negative.
I need help with numbers 17 and 11. worksheet down below :) thank you. I'm using all my points so let this be the time I use my points wisely.
(sry I dont have a lot of points. I only have 20)
Answer:
12-8+3 for the numerical and 2x=3y-6 for the algebraic expression
Step-by-step explanation
Numerical expression consists of numbers and one operation
Algebraic expression consist of multiple varaibles and constents
Answer:
numerical expression: 5+20-9= 16algebraic expression: 6p +18
3/32 in lowest terms
Answer:
It is already simplified
Step-by-step explanation:
0.09375 in decimals
How many degrees Celsius is 51°F?
Answer:
10.56
Step-by-step explanation:
51°F − 32) × 5/9 = 10.56°C
Answer:
10.56°C
Step-by-step explanation:
Hope this helps!
The figure below shows a line graph and two shaded triangles that are similar:
A line is shown on a coordinate grid. The x axis values are from negative 20 to positive 20 in increments of 4 for each grid line. The y axis values are from negative 5 to positive 5 in increments of 1 for each grid line. The line passes through the ordered pairs negative 16, negative 4, and 0, 0, and 16, 4. A shaded right triangle is formed so that its hypotenuse is from ordered pair 0, 0 labeled as O to negative 8, negative 2 labeled as A, one leg is from 0, 0 to 0, negative 2, and the second leg is from 0, negative 2 to negative 8, negative 2. Another shaded right triangle is formed with the hypotenuse from negative 8, negative 2 to negative 12, negative 3 labeled as B, one leg is from negative 8, negative 2 to negative 8, negative 3, and the second leg is from negative 12, negative 3 to negative 8, negative 3.
Which statement about the slope of the line is true?
A. The slope from point O to point A is fraction 1 over 4 times the slope of the line from point A to point B.
B. The slope from point O to point A is 4 times the slope of the line from point A to point B.
C. It is 4 throughout the line.
D. It is fraction 1 over 4 throughout the line.
The answer should be D
Please help ............
Answer:
$100
Step-by-step explanation:
50 times 10
500 times 0.9
450 time 4/5
360 - (50 times 5.2)
100
Process of elimination
Which expression is equivalent to 5x +10y-15?
A. 5(x-2y-3
B. 5(x5y-10
C. 5(x+2y-3
D. 5(x2y-15
Answer:
C
Step-by-step explanation:
Answer:
its a hehehehehehhehehe\
Step-by-step explanation:
Pythagorean theorem - please help
answer:
x = 4[tex]\sqrt{2}[/tex] or 5.6568
step-by-step explanation:
know the formula and plug informula: a^2 + b^2 = c^2
now plug in what we havewhatever the RIGHT ANGLE points to is the HYPOTENUSE or cthe other two sides are the "legs" or a and ba^2 + b^2 = c^2
7^2 + b^2 = 9^2
49 + b^2 = 81
b^2 = 32
b = 4[tex]\sqrt{2}[/tex]
in this case, b would be used as xx = 4[tex]\sqrt{2}[/tex] or 5.6568 (exact value)
Find the distance between C(-5,4) and Q(2,0)
9514 1404 393
Answer:
√65 ≈ 8.06
Step-by-step explanation:
The distance formula is used for the purpose.
d = √((x2 -x1)² +(y2 -y1)²)
d = √((2 -(-5))² +(0 -4)²) = √(7² +(-4)²) = √(49 +16)
d = √65 ≈ 8.0622577
The distance between C and Q is √65, about 8.06 units.
Find the volume of the cylinder.
Either enter an exact answer in terms of or use 3.14
Answer:
452.16 cubic units
Step-by-step explanation:
Volume of cylinder
[tex] = \pi {r}^{2} h \\ \\ = 3.14 \times {6}^{2} \times 4 \\ \\ = 3.14 \times 36 \times 4 \\ \\ = 452.16 \: {units}^{3} [/tex]
help pleaseeeeee i need this asap
Answer:
this is a right angle triangle with a 45 degree angle so ew has to be the same length as qe so 7 and then a square + b squared= c squared gets you the hypotenuse 9.89 with proper sig figs you get 10
Step-by-step explanation:
there are 36 sandwiches ordered for a company luncheon.if t repersents the number of sandwiches that were tuna,then the expression 36-t represents the number of sandwiches that were not tuna,if 17 sandwiches were tuna,how many sandwiches were not tuna
Answer:
19
Step-by-step explanation:
If 36 sandwiches were ordered, if 17 of them are tuna, then 36-17 is 19 sandwiches that weren't tuna
Brainiest would be appreciated
1)The equation y=−4.9x2+8.82x+1.96 represents the height of the trajectory of a ball x seconds after it was released. The solutions to 0=−4.9x2+8.82x+1.96 are x=−0.2 and x=2. Which of these solutions represents the time it takes the ball to hit the ground?(1 point)
a) both x=−0.2 and x=2
b) x=−0.2
c) x=2
d) Neither of the solutions represents the correct time.
2) The equation y=−4.9x^2+19.5x+1.75 represents the height of the trajectory of a ball x seconds after it was released. At what time is the ball 10 meters above the ground?(1 point)
a) The ball never is never 10 meters above the ground.
b) approximately 0.5 seconds and 3.5 seconds
c) approximately 3.5 seconds
d) approximately 0.5 seconds
A baseball player throws a baseball directly upward into the air. The height of the ball is given by the equation y=−4.9x^2+89.5x+1.75 where y is the height in meters and x is the time in seconds. Is this equation a reasonable model for the ball's trajectory? Explain(1 point)
a) No, the initial height is 1.75 meters, which is much taller than any person.
b) No, the equation does not match the model for projectile motion.
c) No, the initial velocity would be 89.5 meters per second. This is approximately 200 miles per hour, which is faster than any human can throw a baseball.
d) Yes, the equation matches the model for projectile motion, so it is a reasonable model for the ball's trajectory.
The equation y=−16x2+275 models the height of a projectile where y is the height in meters and x is the time in seconds. Which of the following situations is the real-world scenario that is best modeled by the given equation?(1 point)
a) A ball being dropped from shoulder height.
b) A child tossing a ball into the air.
c) A stone being dropped off of the edge of a cliff.
d) A tennis ball being launched into the air by a tennis racket.
Answer:
Number 1 is A
Step-by-step explanation:
Two trains, Train A and Train B, weigh a total of 443 tons. Train A is heavier than Train B. The difference of their weights is 279 tons. What is the weight of each train?
Answer:
164
Step-by-step explanation:
443-279
=164
Answer:
443 - 279 = 164
Step-by-step explanation:
so train A should be 279 pounds
and train B should be 164 pounds
So sorry i might be wrong i tried my best
Mr. Hernandez worked for 8 hours a day for 24 days building an addition onto his client’s house. He was paid $22 an hour for his work. How much did Mr. Hernandez get paid for building the addition?
Answer:
Mr. Hernadez got paid $4,224 for his work
In total he got paid $176 dollars.Correct me if ik wrong but I hope I helped
Ben brought two pizzas to a party. He says that since 1/4 of each pizza is left, the same amount of pizza is left. What is his error? (Show your steps) (Giving brainliest for whoever answers good) (40 points)
Answer: 80
Step-by-step explanation: 8/10
Explain how to find Monthly Interest in a Credit card that charges you an annual interest rate of 23% and how much interest they will pay on an item costing $5,400 for 10 months. Please help !!
Step-by-step explanation:
hiii armyNoah went shopping for a new video game because of a sale. The price on the tag was $32, but Noah paid $22.40 before tax. Find the percent discount.
Answer:
30%
Step-by-step explanation:
Delta math
If HF=4x+9, EF=5x + 3, and FG EH, solve for X (pictures included)
Answer:
[tex]\boxed{\textsf{ The value of x is \textbf{6}}}.[/tex]
Step-by-step explanation:
Given that in the given figure , HF = 4x + 9 and EF = 5x +3 . And FG [tex]\perp[/tex] EH . we need to find the value of x .
And here the two triangles must be congruent to each other . That is ,
[tex]\sf \triangle EGF \cong HGF [/tex]
So we can say that
EF = HF ( by cpct )Using this equation we have ,
[tex]\sf\implies EF = HF \\\\\sf\implies 4x +9=5x+3\\\\\sf\implies 4x - 5x = 3-9\\\\\sf\implies -x=-6\\\\\sf\implies \boxed{\pink{\sf x = 6}}[/tex]
In a packet of 40 skittles , 30% are red . How many skittles are not red ?
Answer:
28
Step-by-step explanation:
hope i helped you!!!
Answer:
28 skittles are not red
Step-by-step explanation:
Equation that has a slope of -4 and passes through the point (-2, 2) show work too
Answer:
y=-4x-6
Step-by-step explanation:
y=mx+b, where m is the slope and b is the y-intercept
Slope is given as -4, so:
y=-4x+b
To find b, sub in the point we were given (-2,2):
2=-4(-2)+b
2=8+b
b=2-8=-6
So we have: y=-4x-6
The cruising speed of the bullet train will be no less than 150 miles per hour.
Use s to represent the train's cruising speed (in miles per hour).
AND
To ride a roller coaster, a visitor must be at least 52 inches tall.
Use h to represent the height (in inches) of a visitor able to ride.
Answer:
53
Step-by-step exid
what is the answer to this question you will need to be good at maths and you need to know how to do inequalities
28>6x-2
Answer:
5 > x
Step-by-step explanation:
28 > 6x -2
(add 2 to both sides)
30 > 6x
(divide through by 6)
5 > x
Answer:
x < 5
Step-by-step explanation:
Given
28 > 6x - 2 ( add 2 to both sides )
30 > 6x ( divide both sides by 6 )
5 > x , that is
x < 5
The world's fastest man, Usain Bolt,
sprinted an amazing 62. 64 meters in 6
seconds. At this rate, how many meters
did Usain Bolt travel in 4 seconds? 1
Answer:
41.76 meters
Step-by-step explanation:
Usain Bolt's speed = [tex]\frac{62.64}{6}[/tex]= 10.44m/s
=> In 4 seconds Usain Bold can run: 10.44 x 4 = 41.76m
Prove the Difference of Two Cubes Identity
Explain how you can prove the difference of two
cubes identity
2-12 = (a - b)(a + ab +62
if in ∆ABC, angle C=90 then cos(A+B )=
Answer:
180
Step-by-step explanation:
Cause all together this angel would equal 360.
90 is one side of the triangle and a and b will both be 45 so 45+45+90