Step-by-step explanation:
(14-2) - 3:(2.3)-22= 12- 1.3-22= -11.3
solve these equations
7x − 2y = 6
-3x + 6y = 18
Math help please asap
Answer:
a.) 0.51
b.) 1445
Step-by-step explanation:
a.) 5.1 x 10^-1 can be written as 5.1 x 0.1 which equals 0.51.
b.) 1.7 x 10^4 x 8.5 x 10^-2 can be simplified either by condensing 10^4 and 10^-2 to equal 10^2, or substituting the expression into a calculator.
This should equal 1.7 x 8.5 x 10^2 or 1445.
You randomly choose a marble form a jar.The jar contains 4 red marbles , 10 blue marbles , 7 green marbles , and 6 yellow marbles.Find the probability of the event.
Choosing a green marble.
The diameter of a planet is about 10790 mi. The diameter of the planet's moon is about 33% of the diameter of the planet. What percent of the volume of the planet is the volume of its moon?
Answer:
3560.7
Step-by-step explanation:
The price of pants is bigger than the price of a shirt by 4$.
Mike bought 10 shirts and 5 pants.
Mike payed 20$ more for the shirts than the pants.
How much does a shirt cost?
How much do pants cost?
Answer: A shirt costs $8 and the pants cost $ 12.
Step-by-step explanation:
Let x = Cost of each shirt, y = Cost of each pant.
As per given, we have
[tex]y-x=4 \ \ \ (i)\\\\ 10x-5y = 20\ \ \ (ii)[/tex]
Multiply 5 on both sides of (i), we get
[tex]5y-5x=20 \ \ \ (iii)[/tex]
Add (ii) and (iii), we get
[tex]5x=40\\\\\Rightarrow\ x=8[/tex]
From (i), y=4+8=12
Hence, a shirt costs $8 and the pants cost $ 12.
Mr. Yasin paid a total of 9.43 to buy three boxes of cereal. If he paid 3.99 for the 1st box and 2.97 for the 2nd box how much did Mr. Yasin pay for third box of cereal?
$4.72, 2.47, 6.96, or 3.54
Answer:
$2.47
Step-by-step explanation:
Pretend if Mr. Yasin didn't pay for the 3rd box, find out how much he had left after paying for the first 2 boxes.
9.43 - 3.99 - 2.97 = 2.47
6. Factor 4x from 22x2 + 40x 6.
6. Factor 4x from 22x2 + 40x 6.
is that multiply 4x 22x2 +40x6
Answer:
I think that would be 4(71 - ×)
HELP PLZ DUE RN BRAINIEST TO WHOEVER RIGHT
Answer:
[tex] x = \dfrac{2}{5} + \dfrac{\sqrt{14}}{5} [/tex] or [tex] x = \dfrac{2}{5} - \dfrac{\sqrt{14}}{5} [/tex]
Step-by-step explanation:
[tex] 5x^2 - 2 = 4x [/tex]
[tex] 5x^2 - 4x - 2 = 0 [/tex]
[tex] x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} [/tex]
[tex] x = \dfrac{-(-4) \pm \sqrt{(-4)^2 - 4(5)(-2)}}{2(5)} [/tex]
[tex] x = \dfrac{4 \pm \sqrt{16 + 40}}{10} [/tex]
[tex] x = \dfrac{4 \pm 2\sqrt{14}}{10} [/tex]
[tex] x = \dfrac{2 \pm \sqrt{14}}{5} [/tex]
[tex] x = \dfrac{2}{5} + \dfrac{\sqrt{14}}{5} [/tex] or [tex] x = \dfrac{2}{5} - \dfrac{\sqrt{14}}{5} [/tex]
Answer:
Answer:
x = \dfrac{2}{5} + \dfrac{\sqrt{14}}{5}x=
5
2
+
5
14
or x = \dfrac{2}{5} - \dfrac{\sqrt{14}}{5}x=
5
2
−
5
14
Step-by-step explanation:
5x^2 - 2 = 4x5x
2
−2=4x
5x^2 - 4x - 2 = 05x
2
−4x−2=0
x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}x=
2a
−b±
b
2
−4ac
x = \dfrac{-(-4) \pm \sqrt{(-4)^2 - 4(5)(-2)}}{2(5)}x=
2(5)
−(−4)±
(−4)
2
−4(5)(−2)
x = \dfrac{4 \pm \sqrt{16 + 40}}{10}x=
10
4±
16+40
x = \dfrac{4 \pm 2\sqrt{14}}{10}x=
10
4±2
14
x = \dfrac{2 \pm \sqrt{14}}{5}x=
5
2±
14
x = \dfrac{2}{5} + \dfrac{\sqrt{14}}{5}x=
5
2
+
5
14
or x = \dfrac{2}{5} - \dfrac{\sqrt{14}}{5}x=
5
2
−
5
14
Which of these sets of ordered pairs satisfies an exponential equation? (1) {(1, -1), (2, -8), (3, -27), (4, -64)} (2) {(1, -1), (2, -4), (3, -9), (4, -16)} (3) {(1, -2), (3, -8), (5, -32), (7, -128)} (4) {(1, -2), (3, 2), (5, 6), (7, 10)}
Answer:
(4, -16)(3, -8)
Step-by-step explanation:
hey can you help me fast!!
Answer:
should be the 2nd.............
pls help giving brainliest ty !
Answer:A
Step-by-step explanation:
Answer:
i would say its B it might not be right
Step-by-step explanation:
hope dis helps
PLEASE HELP THIS IS VERY IMPORTANT I WILL GIVE YOU BRAIN THING IF ITS CORRECT (you can use a calculator if you want)
Answer:
1. B.
2. A, E.
3. D.
Step-by-step explanation:
1. 8.225 ÷ 5 = 1.645
2. 892 ÷ 8 = 111.5
8920 ÷ 80 = 111.5
894 ÷ 10 = 89.4
89.2 ÷ 0.08 = 1115
8.92 ÷ 0.8 = 11.15
0.892 ÷ 0.008 = 111.5
3. 4367 ÷ 0.004 = 1,091,750
What value of x is the solution to 2.5x =8?
Answer:
x=3.2
Step-by-step explanation:
2.5x=8
divide both sides by 2.5
x=3.2
Answer:
x = 3.2
Step-by-step explanation:
[tex]2.5x = 8[/tex]
[tex]2.5x - 2.5 = 8 \div 2.5[/tex]
[tex]x = 8 \div 2.5[/tex]
[tex]x = 3.2[/tex]
Which of the following expressions represents the distance between −3.9 and −4.7?
Choice a: ∣−4.7−3.9∣
Choice b: ∣−3.9−4.7∣
Choice c: none of the above
NEED NOW
(Absolute value)
Answer: Choice C: none of the above
Step-by-step explanation:
The distance between two numbers would be |(number 1) - (number 2)|
--------------------------------------------------------------
Given
Number 1=-3.9
Number 2=-4.7
|(number 1) - (number 2)|
=|(-3.9) - (-4.7)|
=|-3.9+4.7|
The choice is not available.
Therefore, it is none of the above.
Hope this helps!! :)
Please let me know if you have any questions
Helppppppp
14. Rob uses free weights at the gym every 3 days and he uses the weight machines every 5 days.
Today Rob used both free weights and the weight machines. How many days will it be before he uses
both kinds of weights on the same day again?
Answer:
15 days
Step-by-step explanation:
Since he used both of the weights today, he will only do both on the day they come together.
weights: 3 days, 6 days, 9 days, 12 days, 15 days
machine: 5 days, 10 days, 15 days
Because the numbers both were the same on 15 days, then that is when he will do both of them
make triangles and find the central angle
Answer:
Step-by-step explanation:
It 14
Answer:
this is like related to fractions right?
Step-by-step explanation:
4. Which equation below shows a correct use of the distributive property? a. 2(3 + 5) = (2 + 3) x (2 + 5) b. 2(3 + 5) = (2 x 3) + 5 c. 2(3 + 5) = 2(5 + 3) d. 2(3 + 5) = (2 x 3) + (2 x 5)
Answer:
The answer is D
Step-by-step explanation:
This is because you multiply two by every number in the parentheses!
Hope this helps :)
Describe this transformation
A) reflection across the y-axis
B) reflection across the x-axis
C) translation 4 units to the right
D) reflection across the line y=x
Answer:
A
Step-by-step explanation:
By reflecting it over the Y-axis or the up and down axis, it ends up where it is on the right.
What are the steps for 625 to the power of 3/4
Answer:
125
Step-by-step explanation:
note that
625 = [tex]5^{4}[/tex]
Using the rule of exponents
[tex](a^{m}) ^{n}[/tex] ⇔ [tex]a^{mn}[/tex]
Then
[tex](5^{4}) ^{\frac{3}{4} }[/tex]
= 5³
= 125
Kim will paint all the faces of the outside of the storage trunk when it is closed. How many square
feet will Kim paint?
Answer:
a
Step-by-step explanation:
The area of that should be painted by Kim is 55.75 ft².
What is surface area?Surface area is the amount of space covering the outside of a three-dimensional shape.
Given that a container which is in shape of rectangular prism,
We need to find the area that should be painted,
So, to find the same we will find the surface area of the prism,
SA = 2(lh + hw + wl)
l = length, w = width and h = height,
SA = 2(2.50·4 + 2.75·2.50 + 2.75·4)
= 2(10 + 6.875 + 11)
= 2 × 27.875
= 55.75
Hence the area of that should be painted by Kim is 55.75 ft²
Learn more about surface area click;
https://brainly.com/question/29298005
#SPJ2
At the start of the Crayola empire, their pricing for a pack of markers was steep due to high demand. For a basic pack of 8 markers, the cost was $11.50. At this rate, how much would the special pack of 7 markers cost?
Another way to write 300 + 70 + 5/10 + 8/100
Pick one:
A) 370.58
B) 370.058
C) 30, 070. 508
D) 30,070. 58
No! links or guessing or lm will report you! :)
Answer:
A. 370.58
Step-by-step explanation:
Hope that helps
Which expression is equivalent to (23)–2 • 25?
Answer:
Step-by-step explanation:
That would be 23 - 50, or -27.
Next time, please include the answer choices. Thank you.
i really need help on these
Answer:
Im pretty sure its B.(2n+3)
Step-by-step explanation:
You start off with two dots and it keeps adding three in each picture, so yeah :)
Avery has two horses: Salt and Pepper. Every month, Salt eats 450 pounds of hay. Pepper is bigger, so he eats 550 pounds of hay each month. How many tons of hay do Salt and Pepper eat in a year?
Please help
Answer:
3.3 for pepper and 2.7 for salt which is 6 tons in total
Step-by-step explanation:
The number of tons of hay both Salt and Pepper eat in a year is 5.5 tons.
Given that, every month, Salt eats 450 pounds of hay. Pepper is bigger, so he eats 550 pounds of hay each month.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Number of pounds of hay eaten by Salt in a year
= 450 × 12
= 5400 pounds
Number of pounds of hay eaten by Pepper in a year
= 550 × 12
= 6600 pounds
Total pounds of hay eaten by both the horses = 5400+6600
= 11000 pounds
In tons = 11000/2000
= 5.5 tons
Therefore, the number of tons of hay both Salt and Pepper eat in a year is 5.5 tons.
To learn more about the unitary method visit:
brainly.com/question/22056199.
#SPJ2
find the volume of the sphere d=18
Answer:
3053.62806
Step-by-step explanation:
d=18 so r=9
(check attachement)
Only #6. I Would Appreciate Help On This One
Answer:
25π
Step-by-step explanation:
well the area is 78.53981633974 but in terms of pi, it's 25π
Giving brainliest for the correct answer
Answer:
72 is the surface area
SA=2lw+2lh+2hw
l=6
w=3
h=2
Determine the domain and range:
Answer:
Option B is correct.
Step-by-step explanation:
Recall that the domain is the set of (unique) inputs and the range is the set of outputs (which do not have to be unique).
The set of inputs of the given relation is {-1, 9, -10, 1}, and this set is also found in Option B. The set out outputs is {7, 2, 6, -6|, which is in Option B.
full explanations please!!
Answer:
x/7 = 7
x = 49
y/7 = 2
y = 14
Step-by-step explanation:
I'm not really confident about this since I kind of forgot but I'm pretty sure what I said is right.