9514 1404 393
Answer:
6 # plastic bricks4 # wooden blocksStep-by-step explanation:
Let p represent the number of pounds of plastic bricks in the mix. Then the number of pounds of wooden blocks is (10-p), and the total cost is ...
10p +5(10-p) = 80
5p = 30 . . . . . . . . . subtract 50
p = 6 . . . . divide by 5; there are 6 pounds of plastic bricks in the mix
4 pounds of wooden blocks and 6 pounds of plastic bricks should be used to make a 10-lb mix worth $80.
The Mariana Trench in the Pacific Ocean is about 36,201 feet deep. The Puerto Rico Trench in the Atlantic Ocean is about 27,493 feet deep. How many feet deeper is the Mariana Trench than the Puerto Rico Trench?
Answer:
8708 feet
Step-by-step explanation:
The Mariana Trench in the Pacific Ocean is about 36,201 feet deep. The Puerto Rico Trench in the Atlantic Ocean is about 27,493 feet deep.
We need to find how many feet deeper is the Mariana Trench than the Puerto Rico Trench.
As Mariana Trench and Puerto Rico Trench is deep.
h = -27,493-(-36,201)
h = 8708 feet
So, Mariana Trench is 8708 feet deeper than Puerto Rico Trench
You have 784 grams of a radioactive kind of tellurium. If its half-life is 42 minutes, how much will be left after 126 minutes?
Answer:
98 grams
Step-by-step explanation:
The simplest way to think about this is that the half life has elapsed 3 times, so you need to take the initial mass and divide it by 2 3 times, so 784/2/2/2 or 784/8 which is 98
I WILL GIVE BARINLEST WHO HELP ME
2
Answer:
30 miles
Step-by-step explanation:
50/5 is 10 and 10 times 3 is 30.
Answer:
its 30 miles for february
Step-by-step explanation:
50/5 = 10 for january
10*3 = 30 for february
What value of a will yield a solution of (2,8) for the system?
y = ax
ax + y = 16
Answer:
The value of a is 4 ⇒ D
Step-by-step explanation:
In the system of equations
∵ y = ax ⇒ (1)
∵ ax + y = 16 ⇒ (2)
∵ The solution of the system is (2, 8)
∴ x = 2 and y = 8
→ To find the value of a substitute x by 2 and y by 8 in equation (1) or (2)
∵ y = ax
∵ y = 8 and x = 2
∴ 8 = a(2)
∴ 8 = 2a
→ Divide both sides by 2
∵ [tex]\frac{8}{2}[/tex] = [tex]\frac{2a}{2}[/tex]
∴ 4 = a
∴ The value of a is 4
PLEASE HELP I HAVE 5 MIN TO TURN THIS IN!!!!
There are two gardens, garden A and garden B are shown in the image below.
Determine if statement 1 is true or false and explain why the statement was true or false
Answer:
TrueStep-by-step explanation:
Perimeter of Garden A
P = 2(w + l)P = 2(2x - 3 + 5(2x - 3) = 2(2x - 3 + 10x - 15) = 2(12x - 18) = 24x - 36The statement is TRUE
Look at picture please !! I really need help thank you !
Which relation is a function?
Answer:
Top left
Step-by-step explanation:
A function means that each domain (x value) can only have 1 range (y value). Also, I'm not sure if you can recognize it, but that option is actually a parent function (y = x^2)
Answer: the 4 one
Step-by-step explanation:
hope this helped!
-7x ≤ x ≤ 7 Write as an absolute value equation
Answer:
7x≤x≤7
Step-by-step explanation:
when you put them all in absolute
/-7x/ ≤ /x/ ≤ /7/
7x ≤ x ≤ 7 (-7x becomes 7x when it comes out of absolute value)
what is the solution to the inequality? 2 3/5
Answer: c b< 3 2/15
The total cost of the skateboard is $ ?
charges competition fees of $250 plus $75 per week for classes. What is the
total charge for 40 weeks?
Answer:
$3,250
Step-by-step explanation:
You take the initial fee of 250 then add 75x40
250x75(40)=$3250
HELP ME I HAVE TO PASS
What is the value of x in the solution to this system of equations?
3x+5y=94
x=2y−9
A.x = 7
B.x = 13
C.x = -13
D.x = 10
What single percentage change is equivalent to a 8% increase followed by a 15% increase?
Answer:
24.2%
Step-by-step explanation:
If we take 100 for example, an 8% increase would make it 108, and a further 15% increase would make it 124.2 and 124.2 is 124.2% of 100 and if we minus the initial value of 100% it would be 24.2%
A cake is removed from an oven. The temperature, in degrees Fahrenheit, of the cake after t minutes can be modeled by the equation, f(x)=70+140e^-0.024t.
What is the temperature of the cake at the moment it is removed from the oven and about how long will it take for the cake to reach a temperature of 80F ? Round your answer to the nearest whole minute.
Thank you (:
9514 1404 393
Answer:
210 °F110 minutesStep-by-step explanation:
A graphing calculator answers the questions easily.
At t=0, f(0) = 210 . . . degrees F
f(t) = 80 at about t=109.96, so it takes about 110 minutes to reach 80 °F.
__\
Working "by hand"
The exponential term is 1 at t=0, so the temperature then is ...
f(0) = 70 +140·1 = 210 . . . degrees F
The temperature of the cake from the oven is 210 °F.
__
The time when the temperature is 80 °F will be ...
80 = 70 +140e^(-.024t)
10 = 140e^(-.024t)
10/140 = e^(-.024t)
ln(1/14) = -0.024t
t = ln(1/14)/-0.024 ≈ 109.9607
t ≈ 110 when f(t) = 80
It takes about 110 minutes for the cake to cool to 80 °F.
I need to know 2/7 divided by 6 =
Answer: 1/21
[tex]\frac{2}{7}:6=\frac{2}{7}.\frac{1}{6}=\frac{2}{42}=\frac{1}{21}[/tex]
Step-by-step explanation:
What is the square root of 12 divided by 2 plus 16?
Answer:
17.73205081
Step-by-step explanation:
Didn't use a calculator :) Please mark me as brainliest. Thanks!
Answer:
[tex]\frac{2\sqrt{3} + 32}{2} \\[/tex]
Step-by-step explanation:
[tex]\frac{\sqrt{12} }{2} + 16[/tex]
= [tex]\frac{\sqrt{12} }{2} + \frac{32}{2}[/tex]
= [tex]\frac{\sqrt{12} + 32}{2}[/tex]
= [tex]\frac{2\sqrt{3} + 32}{2} \\[/tex]
* i'm not sure if it can be further broken down *
ΔXYZ was reflected to form ΔLMN.
Triangle X Y Z is reflected to from triangle L M N. Angle Z Y X is 86 degrees and angle Y X Z is 38 degrees. Angle L N M is 56 degrees and angle N M L is 86 degrees.
Which statements are true regarding the diagram? Check all that apply.
Answer:
A,B,C, and F
Step-by-step explanation:
Edge 2020
Answer:
A. B. C. and F.
Step-by-step explanation:
please help will mark brainliest if right
Answer:
1 & 5
4&8
3& 7
Step-by-step explanation:
factorise
3x^2+22x+35
Answer:(3x + 7) (x +5)
Step-by-step explanation:
this 5th question ...please answer
Answer:
Im 47 and i have no idea
Step-by-step explanation:
thanks for 5 points
A flagpole 12 meters tall casts a 24-meter shadow. Nearby, luke stands and is 4 meters tall. Determine the length of luka’s shadow. include all labels.
Answer:
8 meters
Step-by-step explanation:
This means that the shadows at this time is twice as tall as normal.
4*2=8
Luka's shadow is 8 meters tall.
I know it’s extremely late! But I seriously need help!!
Kong took
15
%
15%15, percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took
85
8585 seconds.
How many seconds did Nolan take?
Answer:
100
Step-by-step explanation:
=(100x-15x )/100=85
=85x/100=85
=85x=8500
=x=8500/85
=x=100
answer plss. will mark the first correct answer as brainliest!!
n is an integer.
Write the values of n such that -15 < 3n<6
Answer:
(-1,-2, -3, -4)
Step-by-step explanation:
-15 < 3n <6
-15 < 3 (-1,-2, -3, -4) <6
3 • -1 = -3
3 • -2 = -6
3 • -3= - 9
3 • -4 = -12
so all these answer still make -15 the lowest value and 6 the highest value.
Find the value of x!!!!!
Answer:
96 degrees
Step-by-step explanation:
The 144 degrees is on a straight line, meaning the angle next to it inside the triangle and 144 are supplementary. They add up to 180 degrees.
Coincidentally, the other two angles plus the third, unlabeled angle will add up to 180 degrees as well, meaning that the the 48+x = 144 degrees (according the property of equality, which is if a=b and b=c, then a=c). Solve for x from there:
x = 144-48
x = 96
Answer:
I attached a photo of the answer
11. At a fund-raiser, Ling raised $19 more than the total amount raised by the swim club. The
total amount raised by the swim club was $235. Circle the amount of money Ling earned.
$66
Ling earned $47
E
$32
Answer:$66
Step-by-step explanation:
4x < 8
And how to graph it?
Answer:
x<2
put a circle (unsahded) on number 2 and a line on all the sides to the left of 2 , like through 1, 0 , -1 ....
Step-by-step explanation:
4x<8
divide by 4
x<2
3x−1/5 = x+1/3 plz help me
Answer:
[tex]\huge\boxed{\sf x = 2 }[/tex]
Step-by-step explanation:
[tex]\sf \frac{3x-1}{5} = \frac{x+1}{3} \\\\Cross \ Multiplying \\\\3(3x-1) = 5(x+1)\\\\9x - 3 = 5x+5\\\\Combining \ like \ terms\\\\9x-5x = 5+3\\\\4x = 8 \\\\Dividing \ both \ sides \ by \ 4\\\\x = \frac{8}{4}\\\\\boxed{\sf x = 2 }\\\\\rule[225]{225}{2}[/tex]
Hope this helped!
~AnonymousHelper1807Find three solutions of the equation y=-5x+1
Answer:
(–2, 11), (1, –4), (0, 1)
For what number of visitors will the daily operating cost be $730? Use the equation C = 15n + 100. Got the answer?
Answer: n=42
Step-by-step explanation:
hope it helps!
I’ll give brainliest. Pls help me
Answer:
Interpolation refers to using the data in order to predict data within the dataset. Extrapolation is the use of the data set to predict beyond the data set.
Step-by-step explanation:
Extrapolation and interpolation are both used to estimate hypothetical values for a variable based on other observations. There are a variety of interpolation and extrapolation methods based on the overall trend that is observed in the data.
