Answer:
x = 2
y = 3
Step-by-step explanation:
add the 2 together and the y-values drop out and you are left with:
8x = 16
x = 2
3(2) + 2y = 12
2y = 6
y = 3
1 of 5
A = 3(a+b)h
Work out A if a = 6,b= 4 and h = 5 .
A=
You have the letters in the word "SCIENTIST." What is the probability that you pick a vowel,do not replace it,and then pick "T"?
Answer:
1/12
Step-by-step explanation:
Total choices = 9, vowels = I, E, I = 3
Hence, P (vowel) = 3/9 = 1/3
Since you do not replace it, new total = 8 and number of Ts = 2
Hence, P (T) = 2/8 = 1/4
As these events are dependent and T is picked after vowel,
total probability = 1/3 x 1/4 = 1/12
Pls help me I’m stuck rn in
Answer:
Rhombus
Step-by-step explanation:
A rhombus is basically just stretched out
Answer:
square or rhombus
Step-by-step explanation:
one of the two
Brainly Reward (mathematics)
Answer:
1: 45
2: 32
3: 35
4: 32
Step-by-step explanation:
when finding the area of a trapezium you can also just split the rectangle and triangle to have 2 different areas then combine to have the same area. but also this would be more difficult if you needed to separate the trapezium into more than 3 shapes.
so if there is like a trapezoid that you split and there is a rectangle and 2 triangles it is harder than doing the formula.
so use the formula sometimes too if it is easier.
Answer:
1 would be 45, 2 would be 32, 3 would be 35, 4 would be 32
Step-by-step explanation:
if you start at 89 degrees and it decreases 5% each hour what would it be at in 3 hours
Answer:
A = 76.3 degrees after 3 hours
Step-by-step explanation:
An exponential function is needed here:
A = P(1 - 0.05)^3, where this (1 - 0.95) reflects a DECREASE of 5%/hour.
Then: A = (89 degrees)(0.95)^3, or
A = 76.3 degrees after 3 hours
You have some trading cards. You give 21 cards to a friend and have 9 left for yourself.
How many cards were in your original deck?
Answer:
30
Step-by-step explanation:
21 + 9 = 30
Wich of the numbers below are factors of 20? Select that apply.
A)3
B)4
C)5
D)10
E)16
4, 5, And 10
4x5= 20
5x4= 20
10x2= 20
Find the length of side x in simplest radical form with a rational denominator.
Answer:
x = 4
Step-by-step explanation:
Using the sine or cosine ratio.
Using the sine ratio in the right triangle and the exact value
sin30° = [tex]\frac{1}{2}[/tex] , then
sin30° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{2}{x}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )
x = 4
Find the area of each sector. Round your answer to nearest tenth
Answer:
area of 150° segment = 188.5 km²
Step-by-step explanation:
area of full circle = πr² = (3.14)(12²) = 452.16 km²
area of segment = (150°/360°)(452.16) = 188.5 km²
the area of each sector is C
Help plssss!!! Giving. 10 pointsssssss
Answer:
its 34
Step-by-step explanation:
help pls !
i’ll mark brainliest to whoever answers it right first.
thanks !
What is the M? Will mark brainlist if correct
3. The function f(x) = -3.5x + 45;
0
rectangle in terms of its width,
x. Find the area of the rectangle
when its width is 9.5 units.
Question 1
Form the largest 5-digit number using the digits 9, 2,5, 4, 7 only once
a. 97542
b. 97524
c. 97425
d. 24579
Answer:
97542
Step-by-step explanation:
Write all the numbers in descending order
hope it helps
Answer: 97542
Step-by-step explanation: go in order of largest to smallest number as starting with a bigger number will let you end with a bigger number
Can someone please help me on this
Answer:
9
Step-by-step explanation:
Hep yep help helphelp
Answer:
pretty sure it's A
Step-by-step explanation:
cuz a common factor of 9 and 10 is 90 do the calculations and it should be simple.
A chemist has three different acid solutions. The first acid solution contains 20 % acid, the second contains 40 % and the third contains 70 % . They want to use all three solutions to obtain a mixture of 56 liters containing 50 % acid, using 2 times as much of the 70 % solution as the 40 % solution. How many liters of each solution should be used?
Answer:
The volume of the first acid solution (containing 20% acid) in the mixture is 14 liters
The volume of the second acid solution (containing 40% acid) in the mixture is 14 liters
The volume of the third acid solution (containing 70% acid) in the mixture is 28 liters
Step-by-step explanation:
The percentage of acid in the first acid solution = 20%
The percentage of acid in the second acid solution = 40%
The percentage of acid in the third acid solution = 70%
The volume they want to use the three solutions to obtain a mixture of = 56 liters
The concentration of the mixture they want to obtain = 50%
The amount of the 70% solution to be used = 2 × The volume of the 40% solution to be included
Let 'x', 'y', and 'z', represent the volumes of the first second and third acid solutions in the mixture
Therefore, from the question parameters, we get;
x + y + z = 56...(1)
z = 2·y...(2)
0.2·x + 0.4·y + 0.7·z = 0.5 × 56...(3)
Multiplying equation (3) by 10 and then subtracting equation (1) multiplied by 2 from the result gives;
10 × (0.2·x + 0.4·y + 0.7·z = 0.5 × 56) = 2·x + 4·y + 7·z = 5 × 56 = 280
2·x - 2·x + 4·y - 2·y + 7·z - 2·y = 280 - 2 × 56 = 168
2·y + 5·z = 168
From equation (2) and (4), we get;
2·y + 5·z = 2·y + 5×(2·y) = 168
12·y = 168
y = 168/12 = 14
The volume of the second acid solution in the mixture, y = 14 liters
From equation (2), we have;
z = 2·y
∴ z = 2 × 14 = 28
The volume of the third acid solution in the mixture, z = 28 liters
From equation (1), we get;
x + y + z = 56
x = 56 - (y + z)
∴ x = 56 - (14 + 28) = 14
The volume of the first acid solution in the mixture, x = 14 liters.
The equation of the line with slope 4 and y -intercept 4 can be written in the form y = m x + b where the number m is: the number b is:
Answer: [tex]m:4; \ b=4[/tex]
Step-by-step explanation:
Given
Slope is 4
Y-intercept is 4
For the slope-intercept form of line i.e. [tex]y=mx+b[/tex]
[tex]m=\text{slope of line}\\b=\text{Y-intercept of the line}[/tex]
So, we can write
[tex]y=4x+4[/tex]
[tex]m:4; \ b=4[/tex]
please help me it due soon
Answer:
Tyler is correct
Step-by-step explanation:
ALL OF THEM MAKE A PLUS AND B AND D HAVE BEEN INCREASED IN SIZE BUT THE PROPORTION IS STILL THE SAME AS A
PLEASEEEEE HELP ME......
Answer:
B makes the most sense.
Step-by-step explanation:
The others make little to no sense.
Answer:
B is the correct answer. it makes sense
Which choice is equivalent to the product below?
√3x√5x√6
O A. 3√10
O B. 9√10
O C. 3√5
O D. 10√3
Answer:
D....................
Which function's graph is shown below?
O A. y=-sin x
O B. y= -c0s X
O C. y = cos x
O D. y = sin x
Answer:
The function's graph shown is C. y = cos x
Step-by-step explanation:
hope it helps...
have a great day!!
A light bulb consumes 1800 watt-hours per day. How long does it take to consume 8100 watt-hours?
Answer:
8100/1800 = 4.5 days
Step-by-step explanation:
Find the slope of the line that passes through the points (0,-5) and (-2,-3).
Answer:
the slope is -1
Step-by-step explanation:
formula for slope is (y2-y1)/(x2-x1)
lets say (-2,-3) is (x2,y2)
-3-(-5)=2
-2-0=-2
2/-2=-1
How many 3 digit numerical passwords are there if a digit can be repeated?
Any math experts can help please and thank you
Answer:
QUESTION:
How many 3 digit numerical passwords are there if a digit can be repeated?
ANSWER:
The first digit of the password can be any of the ten digits - 10 possibilities.
A digit cannot be repeated, so the second digit can be any digit except the one you chose for the first digit - 9 possibilities.
The third digit can be any digit except the digits you chose for the first and second digit - 8 possibilities.
Using the rule of product:
10 X 9 X 8 = 720
There are 720 passwords.
Step-by-step explanation:
Hope that this helps you out! :)
If you have any questions please put them in the comment section below this answer.
Have a great rest of your day/night!
Please thank me on my profile if this answer has helped you.
Answer:
1000?
Step-by-step explanation:
3 + 2a - 7x + 2.5 + 5x
help pls and thank u
Answer:
2 a − 2 x + 5.5
Step-by-step explanation:
Answer:
5.5+2a_2x
Step-by-step explanation:
we add the numbers 3+2.5
Find the y-coordinate and the gradient at the points on the following curve corresponding to the given value of x:
1) 3x^2-2x^3, x = -2
A small measuring spoon holds 5 milliliters. How many spoons would 1 liter of liquid fill?
===================================================
Work Shown:
1 liter = 1000 milliliters
1 spoon = 5 milliliters
200*(1 spoon) = 200*(5 milliliters)
200 spoons = 1000 milliliters
200 spoons = 1 liter
Notice how 1000/5 = 200, so that's why I multiplied both sides of the second equation by 200 to end up with what is shown above.
please help me with this! ( links = report )
Answer: 7 mi
r = √153.9/pi
r = √49.01
r = 7
Can someone solve these rational expressions showing work thanks
Answer:
[tex]\frac{x-5}{\left(x-3\right)\left(x+2\right)}+\frac{2}{\left(x-3\right)\left(x+2\right)}=\frac{1}{2+x}[/tex]
Step-by-step explanation:
[tex]\frac{x-5}{\left(x-3\right)\left(x+2\right)}+\frac{2}{\left(x-3\right)\left(x+2\right)}[/tex]
[tex]\mathrm{Apply\:rule}\:\frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}[/tex]
[tex]=\frac{x-5+2}{\left(x-3\right)\left(x+2\right)}[/tex]
[tex]\mathrm{Add/Subtract\:the\:numbers:}\:-5+2=-3[/tex]
[tex]=\frac{x-3}{\left(x-3\right)\left(x+2\right)}[/tex]
[tex]\mathrm{Cancel\:the\:common\:factor:}\:x-3[/tex]
[tex]=\frac{1}{2+x}[/tex]