Step-by-step explanation:
I went through all of them and also checked what you did.
1. no, wrong. I don't know how you got to the 2×7 in there.
17 - 5×4/2 = 17 - 5×2 = 17 - 10 = 7
2. we just did in the other question. it is 26.
3. correct for the approach, but mistake in the final calculation : 28 + 64 = 92 !
4. (4-7)² - 6×7 + 20
how did you get to the 26 for -6×7 + 20 ?
no.
-3² - 42 + 20 = 9 - 42 + 20 = -13
5. 2×(18 - (5 + 3²)/7)
2×(18 - (5 + 9)/7) = 2×(18 - 14/7) = 2×(18 - 2) = 36 - 4 = 32
6. ((-5 + 1)/2)³ - |‐7|
that may part means "absolute value" of -7. and you know, that means 7.
(-4/2)³ - 7 = -2³ - 7 = -8 - 7 = -15
7. 1 + (-2 - 5)² + (14-17)×4
1 + -7² + -3×4 = 1 + 49 - 12 = 38
8. (6×(2+4) - 1) / (2×3 + 1)
(6×6 -1) / (6 + 1) = 35 / 7 = 5
9. (2⁵/8 + 3) / (4 + 3)
(32/8 + 3) / (7) = (4 + 3) / 7 = 7/7 = 1
10. (17×5 - 3×5) / (3² + 1)
(14×5) / (9 + 1) (as for same factors we can contract the expressions like 17×5 - 3×5 = 14×5)
70 / 10 = 7
11. (13 + 7²/7) / (9 - 20/4 - 16)
(13 + 49/7) / (9 - 5 - 16) = (13 + 7) / (-12) = 20/-12 = -5/3
12. - |-16| / ((3² - 4) / (5 - 10))
-16 / ((9-4) / (-5)) = -16 / (5/-5) = -16 / -1 = 16
30. -3a^2= -3-6^2 is this correct? And I have to evaluate o I am not good at that so if u can help THANK YOU so much!
a=-6
Answer:
-3a^2= -3*(-6)^2
Step-by-step explanation:
-3a^2 = -3*a^2 = -3*(-6)^2
Which statement regarding operations with Rational and Irrational numbers is true?
a.
The sum of two Irrational numbers
is always Rational
c. The product of a Rational number and
Irrational number could be either
Rational or Irrational.
b. The product of two Irrational
numbers is always Rational
d. The sum of a Rational number and
Irrational number is always Irrational
d. The sum of a Rational number and
Irrational number is always Irrational
A cube made of an unknown material has a height of 9 cm. The mass of this cube is 3,645 grams. Calculate the density of this cube given this information. Hint: a cube has equal sides
Answer:
Step-by-step explanation:
Volume of the cube = s^3
s = 9cm
V = 9 * 9 * 9
V = 729 cm^3
d = mass / volume
d = 3645 / 729
d = 5 grams / cm^3
When making cookies, Sofia needs 7 minutes to prepare the dough and an
additional 9 minutes of baking time for each batch of cookies.
Let b represent the number of batches of cookies and m represent the total
number of minutes to make them.
Answer:
16 minutes
Step-by-step explanation:
all i know is 9+7 wahm bam yes mama its not it but ill give that answer >:D
Find the measure of the missing angle of each
Answer:
? = 120, ? = 145, respectively
Step-by-step explanation:
? + 60 = 180
? (+ 60 - 60) = 180 - 60
? = 120
35 + ? = 180
(35 - 35) + ? = 180 - 35
? = 145
anyone know the answer??
Answer:
X (2, 1)
Y (2, 3)
W (5, 5)
Step-by-step explanation:
The current points are:
X (-2, -1)
Y (-2, -3)
W (-5, -5)
Now, after rotating 180 degrees around the origin, here is what points Y, Y, and W would look like:
X (2, 1)
Y (2, 3)
W (5, 5)
Plot these new points on the graph, and you'll have a new figure which will be rotated to 180 degrees.
I have also provided you with a graph, showing both, the original and the rotated version, below.
gm everyone plz help with this question down below :) Who was Sherlock Holmes?
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(cough cough) free, ,points
If Y is the midpoint of R and T. and RY = 3x - 2 and YT = 8x - 22. Find the
value of RT. *
Your answer
Answer:
11x-24
Step-by-step explanation:
All you have to do is add (3x-2)+(8x-22)=11x-24.
Answer:
RT = 20
Step-by-step explanation:
Since Y is the midpoint of RT , then
RY = YT , that is
3x - 2 = 8x - 22 ( subtract 8x from both sides )
- 5x - 2 = - 22 ( add 2 to both sides )
- 5x = - 20 ( divide both sides by - 5 )
x = 4
Then
RT = RY + YT = 3x - 2 + 8x - 22 = 11x - 24 , so
RT = 11(4) - 24 = 44 - 24 = 20
What numbers are a distance of 2/3 unit from 1/2 on a number line? Select the locations on the number line to plot the points.What numbers are a distance of 2/3 unit from 1/2 on a number line? Select the locations on the number line to plot the points.
Answer:
Step-by-step explanation:
1/2 + 2/3 = 7/6
1/2 - 2/3 = - 1/6
Locker combinations consist of numbers 1-30 on the dial. Every locker combo is 3
numbers. How many different locker combinations are there? (Enter the number only -
no labels)
This is the number 27 thousand
==============================================
Explanation:
There are three slots and 30 choices per slot. Repeats are allowed.
So there are 30*30*30 = 27,000 different locker combos.
simplify (2^5/3^2)^4
Answer:
The answer is
2^20 divided by 3^8
Step-by-step explanation:
multiply the both powers to the power outside. calculate it both then divide.If do still cant get it... solve both and compare.
Write a inequality for the graph shown below. Use x for your variable
Answer:
[tex]x > 4[/tex]
Step-by-step explanation:
X is greater than 4
What is the solution for x in the equation?
-x+3/7=2x-27/5
A. x=-4/3
B. x=-3/4
C. x=4/3
D. x=3/4
Answer:
C
Step-by-step explanation:
-x+3/7=2x-27/5
Just bring all the x together, ad all the numbers together
-x - 3x = - 3/7 - 27/5
-4x = - 15/ 35 - 189/35
-4x = - 204 /35
4x = 204/35
x = 204 / 140
x = 1.457
Your this question is a little weird, but the best bet would be C, since C = 1.3333
so i'm struggling with a different problem this time. 5p - 9 = 2p + 12. (keep in mind i am an 8th grader in a high school algebra 1 class so i'm pretty clueless)
some please help!!!
i need it for now!!!!
PLEASE
Answer:
r =√[3V/(π h)]
Step-by-step explanation:
V = ⅓ × π r²h
=> multiplied by 3
3V = π r² h
=> find r²
r² = 3V/(π h)
=> find r
r =√[3V/(π h)]
Answer:
[tex]r=\sqrt{\dfrac{3V}{\pi h}}[/tex]
Step-by-step explanation:
Given equation:
[tex]V=\dfrac{1}{3} \times \pi r^2 h[/tex]
To isolate [tex]r[/tex], multiply both sides by 3:
[tex]\implies V \times 3=\dfrac{1}{3} \times \pi r^2 h \times 3[/tex]
[tex]\implies 3V= \pi r^2 h[/tex]
Divide both sides by [tex]\pi h[/tex]:
[tex]\implies \dfrac{3V}{\pi h}= \dfrac{\pi r^2 h}{\pi h}[/tex]
[tex]\implies \dfrac{3V}{\pi h}=r^2[/tex]
Square root both sides:
[tex]\implies \sqrt{r^2}=\sqrt{\dfrac{3V}{\pi h}}[/tex]
As the radius is positive only:
[tex]\textsf{Apply radical rule} \quad \sqrt{a^2}=a, \quad a \geq 0[/tex]
[tex]\implies r=\sqrt{\dfrac{3V}{\pi h}}[/tex]
so confused i just started this subject
Answer:
6 sq.cm
Step-by-step explanation:
base = 4 cm
height = 3 cm
[tex]Area =\dfrac{1}{2}* \ base * \ height\\\\= \dfrac{1}{2}*4 * 3\\\\= 2 *3\\\\ 6 \ cm^{2}[/tex]
Which of the following is true about the function below?
Vx+4
x+4
A. Its domain is ( - 4,) and its range is (-0,9).
O B. Its domain is [ -4,) and its range is (-0,0) U (0,).
O C. Its domain is (-«,0) and its range is (0,5).
D. Its domain is (-4,) and its range is (0,0).
Answer:
The choose D.
I hope I helped you^_^
Please solve I will mark brainliest if correct
Answer:
m<RQP = 62°
Step-by-step explanation:
m<RQP = m<PQB + m<RQB
m<RQP = 38° + 24°
m<RQP = 62°
Heh, no comment at all
Answer:
A. B and F
Step-by-step explanation:
.................
The answer could be ∠B and ∠F
What is the answer to
-12x+7=-29
x=?
Step-by-step explanation:
-12x+7=29
or,-12x=-29-7
or,-12x=36
or,x=-36+12
x=-24
Answer
A, B & C form a triangle where Z BAC = 90°.
AB = 7.3 mm and CA = 4.6 mm.
Find the length of BC, giving your answer rounded to 1 DP.
Answer:
BC ≈ 8.6
Step-by-step explanation:
Using Pythagoras' identity in the right triangle , that is
BC² = AB² + AC² = 7.3² + 4.6² = 53.29 + 21.16 = 74.45 ( square root both sides )
BC = [tex]\sqrt{74.45}[/tex] ≈ 8.6 ( to 1 dec. place )
Find the perimeter. Simplify your answer.
+4
+4
U
u + u + 4 + u + 4 =
= u + u + u + 4 + 4 = 3u + 8 ← the end
A washer and a dryer cost $950 combined. The washer costs $ 100 more than the dryer. What is the cost of the dryer?
Answer:
$850
Step-by-step explanation:
washer + dryer = $950
if washer cost=>$100
Therefore; the value of the dryer should be x
$100+x=$950
x=$850
The dryer cost is =>$850
Answer:
The dryer is $425.
Step-by-step explanation:
Washer = 100 + Dryer
Set up an equation:
Variable x = dryer
x + x + 100 = 950
x + x = 850
2x = 850
x = 425
Dryer = 425
Bonus answer:
Washer = 100 + x
Washer = 100 + 425
Washer = 525
Check your work:
Washer + Dryer = 950
525 + 425 = 950
950 = 950
Correct!
is 2.4 bigger than 2 1/3 ?
Answer:
yes
Step-by-step explanation:
u can change 2 1/3 to decimal and u will get 2.33.
therefire, 2.4 is bigger than 2 1/3
use the properities to find the sum or product of 93+[68+7]
Answer:
the answer for this questionis 93(68+7)
WILL GIVE BRAINLIEST
Answer:
Page 3 - the y-intercept would remain at 5 and the slope would be 3 times the upward slope.
Page 5 - the y-intercept would remain at -2 and the slope would be 1/4 instead of 5
Step-by-step explanation:
In point slope form the slope and y-intercept can be read directly from the equation.
y = mx + b where m is the slope and b is the y-intercept.
Solve for a: a+b=C
Select one:
a. a. a=b+c
b. a=b-c
c. a=c-b
d. b=C-a
Answer:
b.
Step-by-step explanation:
a+b = c
so a is c-b then you have the answer
A litter of pupples had 2 white pupples and 3 brown pupples. What percent of white pupples are in the litter? Round to the nearest whole number.
(A) 60%
(B) 33%
(C) 40%
(D) 67%
A litter of pupples had 2 white pupples and 3 brown pupples. What percent of white pupples are in the litter? Round to the nearest whole number.?
답변:(C) 40%
Avani is building a rectangular play area. The length of the play area is 7.5 meters. The width of the play area is 5.3 meters. If she wants to cover the area in foam, how much foam does she need to buy?
.
Answer:
She will need to buy 39.75 meters of foam
Step-by-step explanation:
Can anyone help? It’s not -312,44,nor 92
Answer:
60
Step-by-step explanation:
4a + 2b² -2(a-3b)
a = 2 and b = 4
4(2) + 2(4)² - 2(2-3(4))
8 + 32 -2(2-12)
40 - 2(-10)
40 +20
60
Therefore 60 is correct.