Answer:
70. g NaCl
Step-by-step explanation:
For every one mole of a substance, there is a molar mass that coincides with the values of the periodic table. NaCl has a molar mass of 58.44g (Na+Cl). You then take this molar mass and multiple it by the number of moles asked (1.2) to find the grams present.
58.44g * 1.2mol = 70.128g
Then you would round to 2 sig figs to get 70. g of NaCl
solve using quadratic formula
[tex]2k {}^{2} - 3 = 0[/tex]
Answer:
[tex]\bold{k=\pm\dfrac{\sqrt6}{2}\approx\pm1.22}[/tex]
Step-by-step explanation:
[tex]2k^2-3=0\\\\a=2\,,\ \ b=0\,,\ \ c=-3\\\\k=\dfrac{-0\pm\sqrt{0^2-4\cdot2\cdot(-3)}}{2\cdot2}=\dfrac{\pm\sqrt{24}}{2\cdot2}=\dfrac{\pm2\sqrt{6}}{2\cdot2}=\pm\dfrac{\sqrt6}{2}\approx\pm1.22[/tex]
Urgent please help..
Answer:
x ≈ 7.5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightEquality Properties
Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtract Property of EqualityTrigonometry
[Right Triangles Only] SOHCAHTOA[Right Triangles Only] tanθ = opposite over adjacentStep-by-step explanation:
Step 1: Identify
Angle θ = 37°
Opposite Leg = x
Adjacent Leg = 10
Step 2: Solve for x
Substitute in variables [tangent]: tan37° = x/10[Multiplication Property of Equality] Multiply 10 on both sides: 10tan37° = xRearrange equation: x = 10tan37°Evaluate: x = 7.53554Round: x ≈ 7.5Please help me plz I need help
Answer:
a) Speed of the cyclist is (2.75/0.4) = 6.875 miles per hour.
b) It will take (5.5/6.875) = 0.8 hours to travel 5.5 miles at this rate.
Remember: Speed=Distance/TimeThe expression (x-4)² is equivalent to... (btw this is about polynomials and all that)
Answer:
the answer is 8-2x
Step-by-step explanation:
PLEASE HELP I HAVE BEEN TRYING TO FIGURE THIS OUT FOR 4 HOURS AND 15 MINUTES
Answer:
1. C) 3
2. D) -1
3. D) 7^2 - 8*2 - 16
4. B) 75
5. B) 6^2 + (2 - 8)*sqrt(81)
Step-by-step explanation:
1. (10 - (6-4)^2)/2
= (10 - 2^2)/2
= (10 - 4)/2
= 6/2
= 3
2. PEMDAS states that Multiplication is before Subtraction
8 - (5^2-7)/2
= 8 - (25-7)/2
= 8 - 18/2
= 8 - 9
= -1
3. D) 7^2 - (8*2) - 16
= 49 - 16 - 16
= 49 - 32
= 17
4. 3(2 + 3)^2
= 3(5)^2
= 3(25)
= 75
5. 6^2 + (2 - 8)*sqrt(81)
= 36 + (-6*9)
= 36 - 54
= -18
Find the value of x. Round to the nearest tenth.
Answer:
I think it's 16
Step-by-step explanation:
Answer:
answer is 102
Its the rule no matter what all triangles equal 180.
Step-by-step explanation:
all triangles equal 180
A basket contains 1/3 as many apples oranges and 3/4 as many oranges and pears there are 64 pairs what is the ratio of the number of Apples to the total of the number of fruit in the basket
Answer:
a=# of apples
3/8(a)=# of oranges
p=# of pears
3/4(p)=# of oranges
(3/8)a=(3/4)p
(3/8)/(3/4)=p/a
(3/8)(6/8)=p/a
3/6=p/a
1/2=p/a
the ratios of pears to apples is 1 to 2
for every 1 pear there are 2 apples
if there are 4 pears there are 8 apples
there are 8 apples
(3/8)(8)=3 oranges
there are 4 pears
(3/4)(4)=3 oranges again
8 apples, 3 oranges, 4 pears
15 pieces of fruit and 3 are oranges
ratio is 3/15=1/5
Konnor earns $10 an hour mowing lawns. He spends $17 a day on fuel. Konnor's earnings can be represented by the linear relation $10h - $17 = E, where h represents hours worked and E is Konnor's total earnings. If he works 9 hours a day, what are his earnings?
leo reads 13 pages 1/3 hour. What is the unit rate for pages per hour? For hours per page?
Answer:
33%
Step-by-step explanation:
Help is appreciated thank you very much!
Answer:
-3/5
Step-by-step explanation:
Slope is calculated with the formula m=(y_2 - y_1)/(x_2-x_2). The starting point I put as (0,0) and the finish is (5,-3). I used one city block is equal to one. Thus 3 blocks south(y-axis), is -3 and 5 east(x-axis) is 5. So plug into the equation with y_2 as -3 and x_2 as 5 then y_1 and x_1 both as zero. Thus slope=m= -3/5.
The product of 5 and x is at least 25
Answer: 5n≥25 and if you divide 5 on both sides, n≥5 (I don't know if you are supposed to solve or simply put it in the equation form).
Step-by-step explanation:
use what you know about zeros of a function and end behavior of a graph to choose the graph that matches the function f(x)=(x+3)(x+2)(x-1)
Answer:
could you show the graphs???????? ig u missed them to attach
1400 point....pls help will give brainliest
how to find a perimeter of a triangle
Answer:
To find the perimeter of a triangle, add all the side lengths
Step-by-step explanation:
Write the first five terms of the geometric sequence, given
Answer:
-9, 3, -1 , 1/3, -1/9
Step-by-step explanation:
Write two numbers that multiply to the value on top and add to the value on bottom.
-90
27
Answer:
30 and -3
Step-by-step explanation:
What's 100 divided by 42
Answer:
Can you help me? It's worth one hundred points. https://brainly.com/question/21042823
Step-by-step explanation:
2.38095238095
Gwen is going to Turkey. The exchange rate is £1 = 5.8427 lira. She changes £424 to lira. How
many lira will she get to the nearest lira?
______________________________
= £424 × 5.8427lira= 2,477.31 liraGwen Will Get 2,477.31 lira______________________________
What is X? HELP I NEED ANSWERS!
Answer:i think x=141
Step-by-step explanation:i agree
Answer:
Hope it helped
Step-by-step explanation:
SHOW WORK please and thank you
Kirk earns $16 for each hour of dog walking. After a total of 3 hours of walking dogs, how
much money will Kirk have earned?
Answer:
48
Step-by-step explanation:
2multiplied by 6y + 3y divided by 3
Answer and Step-by-step explanation:
= 2×6y+3÷3
= 12y+3÷3
= 15y÷3
= 5y
Hope it help you mark as BrainlistGuys please help me which one is the correct answer.
Answer:
I think 3 terms
I hope it's helps you
Answer:
2
Step-by-step explanation:
the letters count as term basically
10035/55 i just need to check my answers
Answer:
182.4545454545455
or
182.45 ( and the 45 should have the line at the top to represent that the "45" keeps on going
Step-by-step explanation:
The circle graph represents the after-tax budget for the Williams family. If the total monthly budget is $3750, which is the best estimate for the food budget?
A: $625
B: $1250
C: $937.50
D: $468.75
What is the solution to this system of
equations?
S 2x – 3y = -4
-6x + 9y = 12
Answer:
2x-3y=-4
2x=3y-4
x=(3y-4)/2........1
-6x+9y=12
9y=12+6((3y-4)/2)
9y=12+9y-12
9y-9y=12-12
0=0not possible
9y-6y=4
y=4/3
Step-by-step explanation:
check it out a question once
Mary can run 5 kilometers in 18.75 minutes.
At this rate, how long would it take to run 8 kilometers?
Answer:
30 minutes
Step-by-step explanation:
Find the unit rate (time per SINGLE kilometer).
5/5=1 18.75/5=3.75
Multiply 3.75 (unit rate) by 8.
3.75 x 8=30
Does anyone know any 7th grade math? cus i really need help with this.
Answer:
B
Step-by-step explanation:
All we have to do is plug in the values! 1/2(4)(10+5) will give us the area. Now we simplify!
2(15) = A
30=A
Our answer is B!
In which intervals is the function increasing?
(5)
(3)
(4)
(2)
(1)
A Interval 1
B. Interval 2
OC. Interval 3
O D. Interval 4
E. Interval 5
Answer:
big deal with it is so beautiful I don't think so much more then we have been so long q and I don't think so much for your eyes and hindi movie with me and my family is not going anywhere else is not good for you think about it is so beautiful much as you can do it is not going anywhere I don't think so beautiful I was in my way I was a good day and night and night w w what we were with a week or so I can get you
Step-by-step explanation:
skyline of the day is not even w my phone is a great time with we we are not a good day and night and we will be on your face and we were with what w my heart is not going to be a good day for you think about what they do not have to do is not going to be in the world up to be a good day for me to be area and and and and and and and and and and and I am a very happy birthday party and hindi movie and hindi song I am not going anywhere else to get
ayuda.........................................................................................
Answer:
mhhh
Step-by-step explanation: