[tex]A=4\pi r^2[/tex]
Answer:
I have attached an image for the answer
please mark as brainliest thanks!
Answer:
i dont know, sorry
Step-by-step explanation:
Amy uses 48-cent stamps and 7-cent stamps to mail a gift card to a friend. If the postage is $2.07, how many of each stamp did Amy use?
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Answer:
3 48-cent stamps
9 7-cent stamps
Step-by-step explanation:
The number of 48-cent stamps Amy can use is less than 207/48 ≈ 4.3, so we can find the numbers by trial and error. We want ...
48a +7b = 207 . . . . . . postage in cents, where a, b are the numbers of stamps
b = (207 -48a)/7 = 29 4/7 -a(7 -1/7) = (29 -7a) +(a+4)/7
In order for b to be an integer, we must have (a+4) a multiple of 7. The least value of 'a' that will make this true is a=3. That value gives ...
b = (29 -7·3) +(3+4)/7 = 8 +1 = 9
Amy used 3 48-cent stamps and 9 7-cent stamps.
cathy cut 2 apples into 6slices each she ate 9 slices. wgat experssion mathes the words
Answer:
3
Step-by-step explanation:
(2 x 6) - 9 = 12 - 9 = 3
A coin is flipped two times and the number of heads is counted. Which of the following is a valid assignment
of probabilities for the number of heads observed in two flips?
8.
Number of heads
Probability
0
1/10
1
5/10
2
4/10
b.
Number of heads
0
1
2
Probability
1/4
2/4
1/4
C.
0
1
Number of heads
Probability
2
1/3
1/3
1/3
d. All answer options are correct
Answer:
5/10, 1, 2/4,
Step-by-step explanation:
Solve for t: 2t/r=d
Step-by-step explanation:
2t/r=d cross multiply
2t=rd
t=rd/2
If two friends invested in a ratio of 2:3 and earned a profit of Rs. 25,000 on their investments, then the smaller share of the profit is
Help help help please hurry
Answer:
1st is a cilinder
2nd is a sphere
3rd is a rectangle
4th is a cone
formulas for volume..maybe...
Help the question is hard
Answer:
x = - 15
Step-by-step explanation:
Givens
The trick is to let the letters = points of a clock that keeps time this way.
l = 9 oclock
C = 3 oclock
-H= -8
Formula
(x - l) / C = -H
Solution
Substitute the givens into the equation
(x - 9) / 3 = -8 Multiply both sides of the equation by 3
3*(x - 9)/3 = -8*3 Simplify
(x - 9) = - 24 Remove the brackets
x - 9 = - 24 Add 9 to both sides.
x-9+9 = -24+9 Combine
x = - 15
Solve for x where 2/x=2exponent x
Answer:
x = 1
Step-by-step explanation:
2/x = 2^(x)
x = 1
hope that helps
Answers will be auto-submitted when time expires.
1. Answer the question below. (1 point)
Which function is quadratic?
A
X
O
1
2
6
3
0
у
18
12
0
B
х
-3
-1
-2
1
-1
3
5
y
C
८x
-2
4
0
0
2
4
4
16
D
X
1
5
2
7
3
9
4
11
y
Ο Α
Answer:
Try taking a screen shot as this is indecipherable.
Step-by-step explanation:
What is the measure of the largest angle?
Answer:
90°
Step-by-step explanation:
The angles of a triangle have a sum of 180°.
x + 2x + 3x = 180
6x = 180
x = 30
Substitute the value for the largest variable.
3(30) = 90
Bradley $15 painting a fence for two hours and 30 dollars for pressure washing the patio and deck for 4 hours. Did he learn the same amount per hour for. Both jobs? Explain
Yes, he earns the same amount per hour for the fence because in two hours he earned 15. The pressure washing and deck was 4 hours and every 2 hours he got 15.
What is the ratio?It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.
It is given that, Bradley $15 for painting a fence for two hours and 30 dollars for pressure washing the patio and deck for 4 hours.
Bradley $15 painting a fence for two hours, its unit rate is
=$15 / 2 hours
=$ 7.5 per hour
If 30 dollars for pressure washing the patio and deck for 4 hours, the unit rate is
=$ 30 /4 hours
=$ 7.5 / hour
Thus, he earns the same amount per hour for the fence because in two hours he earned 15. The pressure washing and deck was 4 hours and every 2 hours he got 15.
Learn more about the ratio here:
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3s(4 + 6)2 is an example of
Answer:
A. An Algebraic Expression
Step-by-step explanation:
Since we have no equal sign in the problem, we know that it is an expression. An equation has an equal sign and another value so we can simplify to find the value of whatever variable we are working with. We also know that it is not anything numerical because we are working with variables. With this information we will see that the correct answer is A.
Best of Luck!
Answer:
options A an algebraic expression
Step-by-step explanation:
please mark me brainleast
write down what you know from the markings
Answer:
YMCA means nothing without the A
Step-by-step explanation:
Which expression represents -8x^2+54x+140 in factored form?
A. (x-70)(-8x+2)
B. (x+1)(8x- 140
C. (x-8)(2x+70)
D. (x+2)(-8x+70)
Answer:
D. (x+2)(-8x+70)
Step-by-step explanation:
-8x^2+54x+140
Factor out -2
-2(4x^2+27x+70)
Factor
-2(x+2)(4x-35)
Option D is the same answer if we multiply -2 in the second term
(x+2) (-8x+70)
5 [ 4 − ( − 2 ) ] + 6
Answer: 36
Step-by-step explanation:
Given expression
5 [4 - (-2)] + 6
Expand parentheses
5 [4 + 2] + 6
Simplify values in the bracket
5 [6] + 6
Simplify by multiplication
30 + 6
Simplify by addition
[tex]\boxed{36}[/tex]
Hope this helps!! :)
Please let me know if you have any questions
Express the edge length of a cube as a function of the cube's diagonal length d. Then express the surface area and volume of the cube as a function of the diagonal length.
a. A function for the edge length of a cube is L(d) = _________________
b. A function for the surface area of a cube is Ald) = _____________
c. A function for the volume of a cube is V(d) = ________________
Answer:
Step-by-step explanation:
If L is the length of a side, the longest diagonal in the cube is
d = √(L² + L² + L²) = √(3L²) = L√3
meaning
a) L(d) = d/√3 = ⅓d√3
b) A(d) = 6(L(d))² = 6(⅓d√3)² = 6(⅟₉d²(3)) = 2d²
c) V(d) = (L(d))³ = (⅓d√3)³ = ⅟₂₇d³3√3 = ⅟₉d³√3
if 5-3(2a+1)=-4+10, what is the value of a+2
[tex]\\ \rm\Rrightarrow 5-3(2a+1)=-4+10[/tex]
[tex]\\ \rm\Rrightarrow 5-6a-3=6[/tex]
[tex]\\ \rm\Rrightarrow -6a+2=6[/tex]
[tex]\\ \rm\Rrightarrow -6a=6-2[/tex]
[tex]\\ \rm\Rrightarrow -6a=4[/tex]
[tex]\\ \rm\Rrightarrow a=\dfrac{4}{-6}[/tex]
[tex]\\ \rm\Rrightarrow a=\dfrac{2}{-3}[/tex]
Now
[tex]\\ \rm\Rrightarrow a+2[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{2}{-3}+2[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{2-6}{-3}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{-4}{-3}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{4}{3}[/tex]
Answer:
7/3
Step-by-step explanation:
5 - 3(2a+1) = -4 + 10
=> 5 - 6a + 3 = 6
=> 5 - 6 + 3 = 6a
=> 2 = 6a
=> 6a = 2
=> a = 2/6
=> a = 1/3
a + 2
1/3 + 2
=> 1/3 + 6/3
=> 7/3
The circled ones I need help on
Please help I don’t get it
It’s asking if it’s equal to or not equal to
Answer:
Both questions seem to be equal
Step-by-step explanation:
1.12: X, Y, and Z are equal to A, B, and C since they are all variables.
1.13: 0 has the value of nothing so in a way that would mean it can equal the empty box.
I hope this helps. It is a bit confusing since I do not know the main objective.
Simplify equation 9/-4-7i
Answer:
[tex] - \frac{36}{65} + \frac{63}{65} i[/tex]
Step-by-step explanation:
[tex] \frac{9}{ - 4 - 7i} [/tex]
➡️ [tex] \frac{9( - 4 + 7i)}{( - 4 - 7i) \times ( - 4 + 7i)} [/tex]
➡️ [tex] \frac{ - 36 + 63i}{16 - 49 {i}^{2} } [/tex]
➡️ [tex] \frac{ - 36 + 63i}{16 - 49 \times ( - 1) } [/tex]
➡️ [tex] \frac{ - 36 + 63i}{16 + 49} [/tex]
➡️ [tex] \frac{ - 36 + 63i}{65} [/tex]
➡️ [tex] - \frac{36}{65} + \frac{63}{65} i[/tex] ✅
Find the length of Jl.
JI=2x - 6
KJ=2x - 15
KI=15
Answer:
x=12
Step-by-step explanation:
2x-15 + 2x-6 = 15
4x = 36
x = 9
2 x 9 - 6 = 12
Find the midpoint M of the two sets of points. (Use midpt. formula)
X(-3, 4) Y(1, -1)
0 (-1,2.5)
(-2, 2.5)
0 (-1, 1.5)
(-2, 1.5)
Answer:
(-1, 1.5)
Step-by-step explanation:
What is the coefficient of the x-term in the expression 4x+5xy-2y
Find the area of the following triangles:
26.) triaingle has a base of 8 inches and a height of 9 inches
27.)triaingle has a base of 12 cm and a height of 15 cm
28.) triaingle has an area of 60 inches squared, it has a base of 8 inches, what is its height?
29.)triaingle has a base of 16 ft and a height of 1/2 ft
30.)triaingle has a base of 18 m and a height of 12 m
Answer:
26) 1/2 b×h
= 1/2(8×9)
=1/2(72)
=36
27)1/2b×h
=1/2(12×15)
=1/2(180)
=90
28)a÷b×2
=(60÷8)×2
=15
29)1/2b×h
=1/2(16×1/2)
=1/2(8)
=4
30)1/2b×h
=1/2(18×12)
=1/2(216)
=108
If a gas tank can hold 30 gallons, how many gallons does it contain when it is three-fifths full?
Answer:
3/5 of 30 = (3/5)*30
3/5 of 30 = (3/5)*303/5 of 30 = (3*30)/5
3/5 of 30 = (3/5)*303/5 of 30 = (3*30)/53/5 of 30 = 90/5
3/5 of 30 = (3/5)*303/5 of 30 = (3*30)/53/5 of 30 = 90/53/5 of 30 = 18
3/5 of 30 = (3/5)*303/5 of 30 = (3*30)/53/5 of 30 = 90/53/5 of 30 = 18So when the tank is 3/5 full, there are 18 gallons in the tank.
Which of the following is equal to 3,409? A. ( 3 × 10 4 ) + ( 4 × 10 3 ) + ( 9 × 10 1 ) B. ( 3 × 10 3 ) + ( 4 × 10 2 ) + ( 9 × 10 0 ) C. ( 3 × 10 2 ) + ( 4 × 10 1 ) + ( 9 × 10 0 ) D. ( 3 × 10 3 ) + ( 4 × 10 2 ) + ( 9 × 10 1 )
Answer:
A=1633
B=1617
C=1610
D=1626
Step-by-step explanation:
I am not totally sure about 3409 ?
None of the following option sum up to 3400 or close.
What is sum ?Sum is addition
According to the question given we have to determine which of the following is 3409.
A. ( 3 × 104 ) + ( 4 × 103 ) + ( 9 × 101 )
= 312 + 412 + 909.
= 724 + 909
= 1633.
B. ( 3 × 103 ) + ( 4 × 102 ) + ( 9 × 100 )
= 309 + ......
C. 300 + 400 + 900 not sum up to 3400.
D. 300 + 400 + 900 again not sum up to 3400
So, none of the following options sum up to or sum up close to 3400.
learn more about simplifying expressions here :
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I am a prime number.
Tam two digits.
The sum of my digits is 8.
My tens digit is 6 less than my ones digit.
Answer:
17
Step-by-step explanation:
17 is a prime number17 has two digitsThe digits in 17, 1 and 7, add up to 8The tens digit is 6 less than the ones digit place.find the total distance the model airplane
Answer:
1833 miles is the total distance if the model airplane.
calculate the arthmetic mean of 40,50,60,70,80,90.
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Answer:
65
Step-by-step explanation:
The six numbers are sequential multiples of 10, so the mean is halfway between the middle two. Halfway between 60 and 70 is 65.
The mean of the 6 numbers is 65.
50% is 20% of what number?
Answer:
I think the answer is 30 percent