a. 2(4x + 5y)
(2×4)x + (2×5)y
= 8x + 10y
b. -3(2x + 4y)
(-3×2)x + (-3×4)y
= -6x - 12y
help I have asked this question 5 times help help plz I will give u 5 stars plz
Starting at sea level, a submarine descended at a constant rate to a depth of −3/4 mile relative to sea level in 5 minutes.
What was the submarine's depth relative to sea level after the first minute?
Enter your answer in the box as a fraction in simplest form.
Answer:
awooooooogaaaaaaaaaa
The vertex of this parabola is at (3,-2). When the x-value is 4, the y value is 3. What is the coefficient of the squared term in the parabola's equation?
Answer:
the coefficient of the squared expression is 5.
Step-by-step explanation:
the equation of a parabola in its vertex form is y=a(x-h)²+k, where (h, k) is the vertex of the parabola.
in this case, h=3, k=-2, so y=a(x-3)-2
plug (4,3) in the equation: 3=a(4-3)²-2, a=5
Evaluate the function g(t)=23t, when t = 30.
Question 2 options:
A 10
B 25
C 20
D 15
A mechanic charges $55 an hour for an oil change and spends $45 a day on supplies. Which expression represents the amount the mechanic earns in one day?
Answer:
55x-45=y
Step-by-step explanation:
in terms of algeabra 55 dollars per hour x amount of hours 45 spent so subtract 45; y is the amount per day. The variables can be swapped
5 - -10 also I need a example thank u everyone for your help
15
Step-by-step explanation:
A negative number being subtracted makes it positive
5 - -10
5+10 =15
PLS HELP ASSAP whats 10,0000,0000,000 times 40,000,000
Answer:
40000000000000000000
Step-by-step explanation:
Answer:
4×10^19Step-by-step explanation:
1000000000000 = 10^1240000000 = 4×10^7Product of the two numbers above:
10^12 × 4*×10^7 = 4×10^19HELP! I NEED THIS DONE IN ORDER TO PASS! Pain.
Answer:
i thi9nk its the 3rd one or the 1st one im sooooooooooooooo sorry if i gave you the wrong answer hope you pass
Step-by-step explanation:
please help! im begging!
Don't trust me but it's probably the first one. Just using context clues
|-4| ___ -7
a. <
b. >
c. =
Answer:
b
Step-by-step explanation:
(a + 3b)x + (a + 3b)y
Step-by-step explanation:
(a+ 3b ) ( X + y )
........
BRAINLIEST!!! (Please help)
In the diagram, assume that y= 7. Find x and z.
A)
<= 7 V3; 2= 14
B)
x = 14; 2= 7 V3
©
x= 7 V2; 2 = 14
D)
x = 14; 2= 7V2
Answer:
A
Step-by-step explanation:
- to find x we use tan 60 = x/7
- rearrange, tan60*7 = x, x = [tex]7\sqrt{3}[/tex]
- now you have two sides so you can use pythagoras to find z
y^2 + x^2 = z^2
z = [tex]\sqrt{(7\sqrt{3})^2 + (7)^2 }[/tex]
z = 14
I NEED HELP WITH THIS ASAP!
What percent of 25 is 23? *
Answer:
92%
Step-by-step explanation:
If you divide both parts by 25, the answer will be 92%
Hope this helps!
what is 3 1/2 minus 3 1/2
Answer:
the answer is 0
Step-by-step explanation:
Answer:
0-if the same number is subtracting itself from itself then there's nothing remaining.
Step-by-step explanation:
Please help me answer 5 and 6 I will mark you brainlst :)
Answer:
5. x=50 y= 150 z=30
6. x=3
Step-by-step explanation:
a painter can finish painting a house in 3 hour
Answer:
cool
Step-by-step explanation:
Alex made $28.74 for three hours of work at his job at the pet store. If he works a total of 40 hours in one week, how much money would he make before taxes are taken from his paycheck?
4×+3+(-3×)+7×-6×
I've been trying to figure ut out but I cant
kAnswer: There is a mistake into this i think
Step-by-step explanation:
Answer:
-38
Step-by-step explanation:
I just need the 4th not the 3rd please help I will give you BRAINLIEST!!!!
Answer:
See attached
Step-by-step explanation:
The answer is in the picture below
True or false , help please lol
False
I think its false
PLEASE HELP ME there’s a picture to show !!
If AOCD AJAL, then which of the following statements are true? Select True or False for each statement
Answer:
true
Step-by-step explanation:
Answer:
It's true bro
Step-by-step explanation:
Write the equation of a line for the graph:
Answer: y=1/3x-2
Step-by-step explanation:
To find the equation of the line, we need the slope and y-intercept. To find the slope, we can take any two points on the graph and use the formula [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]. To find the y-intercept, we find the point that crosses the y-axis. The two points on the graph are (0,-2) and (3,-1).
[tex]m=\frac{-1-(-2)}{3-0} =\frac{1}{3}[/tex]
Now, we know the slope is 1/3.
The graph crosses the y-axis at (0,-2). Therefore the y-intercept is -2. This tells us that the equation is y=1/3x-2.
Question 5
What is a value of b will cause 27x^2+ bx +3 = 0 to have one real solution?
Answer:
The values of b are [tex]\mathbf{b=\pm18}[/tex]
Step-by-step explanation:
We need to find the value of b will cause [tex]27x^2+ bx +3 = 0[/tex] to have one real solution.
If it has one real solution, the discriminant is zero.
The formula of discriminant is: [tex]b^2-4ac[/tex]
In our case: [tex]b^2-4ac=0[/tex]
We have a=27, b=b and c=3
Putting values to find b
[tex]b^2-4ac=0\\b^2-4(27)(3)=0\\b^2-324=0\\b^2=324\\Taking \ square root \ on \ both \ sides\\\sqrt{b^2}=\sqrt{324}\\b=\pm18[/tex]
So, the values of b are [tex]\mathbf{b=\pm18}[/tex]
A certain radio station plays classical music during 20% of its airtime. If the station is on air 24 hours a day, how many hours each day is the station playing classical music?
Answer:
4.8 hours
Step-by-step explanation:
20% of 24 hours is the product of the decimal form of 20% (which is 0.2) times 24.
The answer is:
0.2 * 24 = 4.8 hours which is the same as 4 hours and 48 minutes.
In a sprint to the finish, a professional cyclist travels 380 meters in 20 seconds. At that rate, how far does the cyclist travel in 10 seconds?
They would travel type your answer
meters
Answer: 190m
Step-by-step explanation: 380 divided by 2=190 if I’m wrong I’m dumb pls tell me I’m not wrong this is my first time.
Andrea had 4 multi-packs of chips. After giving
5 bags of chips to 4 friends, she had 12 packs
left. The diagram below represents the
situation. How many bags of chips were
originally in each multi-pack?
Answer:
i need the diagram
Step-by-step explanation:
I WILL GIVE BRAINLIEST I PROMISE
Which graph could be used to show the situation described?
The temperature increases by 4 degrees every hour. Answer choices in picture
Answer:
I believe the answer would be the last box or the bottom right box
Step-by-step explanation:
Answer:
bottom right one
Step-by-step explanation:
took the unit test
help pls ill give extra points
Answer:
I can’t see the pic
Step-by-step explanation:
How do we do HCF and LCM
please tell
i will mark brainly for the one who answers the first
pleaseeee
For HCF you can list the factors of the numbers and see which is the highest factor that they have in common. For LCM you list put the multiples and find the lowest one they have in common
Find the sum of the first 5 terms of the infinite series: 8 + 18 + 28 +
A) 92 B) 54 C) 140 D) 198
Answer:
8 + 18+ 28+ 38+ 48= 140
Step-by-step explanation:
Answer:
Step-by-step explanation:
140
