Answer:
kyra this is my acc
Step-by-step explanation:
5. While driving on the highway, Mason put his
car on cruise control at 68 miles per hour.
At this speed, how long would it take him to
drive 85 miles?
Answer:
1.25 hours
Step-by-step explanation:
While driving on the highway, Mason put his car on cruise control at 68 miles per hour. Therefore it takes 1.25 hours to drive 85 miles.
D(-1,4) and E (3,-2),
Answer:
(1,1)
Step-by-step explanation:
With the midpoint formula, we're basically finding the average of the two variables, x and y.
Formula: [tex](\frac{x_{1} + {x_2} }{2}, \frac{_{1} + {y_2} }{2} )[/tex]
[tex](\frac{{-1} + {3}}{2} , \frac{{-2} + {4}}{2} )[/tex]
[tex](\frac{2}{2}, \frac{2}{2})[/tex]
(1,1)
Nate and some friends go to the fair. Nate spends 1/2 of his money on rides. He then spends $12 on food. At the end of the day, Nate has $1 left. The equation is 1/2d-12=1. How much money did Nate bring to the fair
Answer:
i can help u if u let me know whta the equation means
Step-by-step explanation:
Answer:
25$
Step-by-step explanation:
Write 14 more then a number (pre algebra)
Answer:
14+n
Step-by-step explanation:
14 more means we are adding and a number means we dont have an specific number so we substitute with n
Hope this helps (:
Answer:
x+14
Step-by-step explanation:
hope it helps!
what’s the solution
y = 8x – 2
y = 9x - 7
Answer:
The answer is (5, 38)
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
~Hoped this helped~
Answer:
(5,38)
Step-by-step explanation:
Complete the table using the equation y = 6x +3.
The values of y corresponding to x:
When x = -1 : y = -3
When x = 0 : y = 3
When x = 1 : y = 9
When x = 2 : y = 15
When x = 3 : y = 21
Given,
Equation : y = 6x + 3
Now,
1)
When x = -1
Substitute x = -1 in the equation to get the value of y,
y = 6(-1) + 3
y = -3
2)
When x = 0
Substitute x = 0 in the equation to get the value of y,
y = 6(0) + 3
y = 3
3)
When x = 1
Substitute x = 1 in the equation to get the value of y,
y = 6(1) + 3
y = 9
4)
When x = 2
Substitute x = 2 in the equation to get the value of y,
y = 6(2) + 3
y = 15
5)
When x = 3
Substitute x = 3 in the equation to get the value of y,
y = 6(3) + 3
y = 21
Know more about equation,
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Solve the system of equations.
-6x+6y=6
-6x+3y=-12
Answer:
x=5 and y=6
Step-by-step explanation:
Answer:
x=5, y=6
Step-by-step explanation:
-6x + 6y = 6
If we divide this by 6 (which we can do because it is an equation), we can simplify this by a lot.
-6x + 6y = 6
-x + y = 1 <-- NEW EQUATION #1
We can also simplify -6x + 3y = -12 by dividing everything by 3.
-6x + 3y = -12
-2x + y = -4 <-- NEW EQUATION #2
Substitution is fairly easy for this problem.
Isolate the variable
-x + y = 1
y = x + 1
Now substitute (x+1) for where you see y in the second equation.
-2x + (x + 1) = -4
-x + 1 = -4
x = 5
Now substitute 5 for x.
-(5) + y = 1
y = 6
One apple is worth three oranges. Which equation below could be used to represent this relationship?
A. y = x + 3
B. y = 3x
C. y = x/3
D. y= x - 3
Answer:
y=3x. .................
Please help me! 7th grade science!
A girl uses 60j of energy to move a box from the floor to a shelf. How much power does she use if it takes her 3 seconds to move the box?
15watts
20watts
90watts
180watts
Answer:
The answer is 20 watts
Step-by-step explanation:
power=joules/seconds
60/3=20
find the area of the isocele triangle formed by the points of intersection of parabolas y=-x^2+9 and y=2x^2-3 and the origin
Answer:
[tex]10\ \text{sq. units}[/tex]
Step-by-step explanation:
The parabola's are
[tex]y=-x^2+9[/tex]
[tex]y=2x^2-3[/tex]
So
[tex]-x^2+9=2x^2-3\\\Rightarrow 12=3x^2\\\Rightarrow \\\Rightarrow x=\sqrt{\dfrac{12}{3}}\\\Rightarrow x=\pm 2[/tex]
[tex]y=-x^2+9=-(2)^2+9\\\Rightarrow y=5[/tex]
[tex]y=-(-2)^2+9=5[/tex]
So, the points at which the parabola's intersect each other is [tex](2,5)[/tex] and [tex](-2,5)[/tex]
The three points of the triangle are [tex](2,5)[/tex], [tex](-2,5)[/tex] and [tex](0,0)[/tex]
Area of a triangle is given by
[tex]A=\dfrac{1}{2}[x_1(y_2-y_3) + x_2(y_3-y_1) + x_3(y_1-y_2)]\\\Rightarrow A=\dfrac{1}{2}[2(5-0)+(-2)(0-5)+0(5-5)]\\\Rightarrow A=10\ \text{sq. units}[/tex]
Area of the triangle formed is [tex]10\ \text{sq. units}[/tex].
After a few mathletes join the team, the team is able to solve 40% more problems per session. Of the team can solve 42 problems per session now, how many problem were they able to solve before the new mathletes joined? (Please EXPLAIN how you got it ;)
Answer:
30 problemsStep-by-step explanation:
Let the number of the problems the team could solve before is x.
Then we have:
x + 40% = 421.4x = 42x = 42/1.4x = 30They were able to solve 30 problems before the new mathletes joined
Answer:
[tex]\tt{}x = 30 \\ [/tex]
Step-by-step explanation:
[tex]\tt{}x + 40\% = 42[/tex]
[tex]\tt{}1.4x = 42[/tex]
[tex]\tt{}x = \frac{42}{1.4} [/tex]
[tex]\tt{}x = 30[/tex]
[tex] \\ \\ \\ [/tex]
[tex] \huge \orange{\boxed{ \fcolorbox{red}{blue}{ \: CarryOnLearning \: }}}[/tex]
will give brainliest to 1st
Answer:
x=10.5
Step-by-step explanation:
5(x+3)=(6)(12)-[.5(6)(12-x)]
5x+15=72-36+3x
reduce
2x=21
x=10.5
check
5(10.5+3)=(6)(12)-[.5(6)(12-10.5)]
52.5+3=72-4.5
reduce
67.5=67.5
The equation of the line graphed below is _____. Do not include spaces in your answer.
Answer:
X=5
Step-by-step explanation:
One side of the rectangle is 3 times the length of another side. The difference is their length is 14 feet. What is the rectangle's area?
Answer:
A=147 units²
Step-by-step explanation:
Area for rectangle is A=bh (base x height)
Knowing that, we can substitute what we know. So we know that b=3h (3 times the length of the other side), however we also know that b-h=14 (difference between the two is 14).
Let's solve so that we get b by itself for the second equation
b-h=14
b=h+14
Now we have b=3h and b=h+14. We can have them equal each other since they both equal b.
3h=h+14
2h=14
h=7
Now let's go back and plug into b if we know h=7.
b=3h
b=3(7)
b=21
Now we know h=7 and b=21, so let's plug that into the area for a rectangle which is A=bh
A=bh
A=(21)(7)
A=147 units²
A technician tests batteries for a battery manufacturer several times each week. She determines that the number of defective batteries is proportional to the number of batteries tested. The table below shows the numbers of batteries the technician tested at two different times during week 1 and the number of defective batteries she found each time.
Battery Test Results for Week 1:
Number Tested: 160, 600
Number Defective: 4, 15
Between week 1 and week 2, the battery manufacturer changed its process. The number of defective batteries is still proportional to the number of batteries tests, but the constant of proportionality is greater. The technician tested 480 batteries during week 2 and found that 18 were defective. By what percent did the constant of proportionality increase? HELP PLEASE
The answer is 50 percent
As per the given data, the constant of proportionality increased by 50%.
What is constant of proportionality?Two numerical sequences, often experimental data, are said to be proportional or directly proportional if their corresponding elements have a constant ratio, which is known as the coefficient of proportionality or proportionality constant.
To solve this problem, we need to compare the proportion of defective batteries in week 1 and week 2. Let's start by finding the proportion of defective batteries in week 1:
For the first test: 4/160 = 0.025
For the second test: 15/600 = 0.025
So in week 1, the proportion of defective batteries was 0.025.
Now let's find the proportion of defective batteries in week 2:
18/480 = 0.0375
The proportion of defective batteries in week 2 is 0.0375.
To find the percent increase in the constant of proportionality, we need to compare the two proportions:
(0.0375 - 0.025)/0.025 x 100% = 50%
Thus, the constant of proportionality increased by 50%.
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Translate this sentence into an equation. The product of Rita's savings and 9 is 153. Use the variable r to represent Rita's savings
Devon drove at the same speed for 4 hours. He drove a total of 120 miles,
How many miles did Devon drive in 1 hour?
Answer: 30
Step-by-step explanation:
Devon drove 30 miles in 1 hour because 120/4 is 30
evaluate 12.3s + 11.7t when s= 7 and t= 8
Answer:
Step-by-step explanation:
Frog legs
The figure below is a parallelogram. Find the measure of the
variable
The diagonals of a parallelogram bisects each other, which means...
3f+5=4f
3g=9
Now we just need to solve for the variables.
5=f
also getting
f=5
then
g=3
Hope this helped if you have any questions about this just ask in the comment and I will answer them.
PLS HELP 100 pointsGiven the equation −4square root of x minus 3 = -12, solve for x and identify if it is an extraneous solution.
Answer:
x=4 17/64
Step-by-step explanation:
-4(sq rt x)-3=-12
simplify
-4(sq rt x)-3+3=-12+3
-4(sq rt x)=-9
-4(sq rt x)/-4=9/-4
sq rt x=-9/4
x=-9/4 x -9/4=81/16
x=4 17/64 or 4.27
How do i solve this math question?
d/2=4
I do not fully understand.
What is the solution to the equation (2 – 2) + 22 – 4 = 9?
Answer:18
Step-by-step explanation:2−2+22−4=9
18≠9
help!!!! pleaseee/.....
Answer:
I am not sure sowwy i hope you get it tho!!
Step-by-step explanation:
1_2_3_
if these two shapes are similar what is the measure of the missing length r?
r = ____ kilometers
Answer:
The answer is r=20
Step-by-step explanation:
[tex] \frac{81}{45} = \frac{36}{r} \\ r = \frac{36 \times 45}{81} = 20[/tex]
Strawberries cost $3.60 per pound. You buy a bag that costs $7.20. How many pounds of strawberries are in the bag?
3.60 per pound
7.20 divided by 3.60 = 2
there are two pounds of strawberries in the bag!
Select the correct answer
Answer:
f(-7)=12
Step-by-step explanation:
f(-7)= 5-(-7)
f(-7)=5+7
f(-7)=12
-7+(-11)
Find the sum
Answer:
-7-11=-18
Step-by-step explanation:
Solve each equation and check your solution.
1.-3w - 4= w+ 3
2.3(3 – 3x) = 2(x + 3) – 30
3. 1/3( z+ 4) – 6 = 2/3 (5 – 2)
Answer:
1. w= 2/7
2. x= 11
3. z =20
Step-by-step explanation:
PLEASE HELP!!
f(x) = -x2 + x + 6
a=
b =
c=
Write an expression that shows the multiplication of a two digit number between 1 and 10 and another two digit number between 1 and 10 (different from the first), whose product is greater than 8, but less than 10.
Answer:
Step-by-step explanation:
From the given information:
Let the first expression that contains two digit number i.e. after multiplying them together their result is greater than 8 but less than 10, let those numbers be:
= 5.5 × 1.5
= 8.25
And another expression that is different from the first but exhibit the same properties to be:
= 3.5 × 2.5 (since both entities are two digit numbers)
= 8.75