Answer:
The weights are 50 lb, 35 lb, and 35 lb.
Step-by-step explanation:
The three boys weight x, y, and z pounds.
One boy weighs 50 lb, so x = 50. The other 2 boys have the same weight, so y = z.
The average weight is the sum of the three weights divided by 3.
(x + y + z)/3 = 40
(50 + y + y)/3 = 40
2y + 50 = 120
2y = 70
y = 35
z = y = 35
Answer: The weights are 50 lb, 35 lb, and 35 lb.
Answer: 35 lb, 35 lb, and 40 lb
Step-by-step explanation:
(50+X+X)/3 = 40
50 + 2X = (40)(3)
2X = 120 - 50
X = 70/2
X = 35
What does the greater unit rate or slope mean in terms of the situation? What can you conclude from this?
Answer:
Bruce's tiles covered more area than Felicia's, so this means Bruce has the greater unit rate.
Step-by-step explanation:
Got it right
I need help on this question pls
56/64 = 7/8
7/8 x 120
105.
Express x^2-8+5 in the form (x-a)^2-b where a and b are integers
Answer:
(x-4)^2-9 where a=4 and b=9
Step-by-step explanation:
x^2-8x+5
x^2-8x+16-16+5
(x-4)^2-9, a=4 and b=9
Determine the 3 digit chopping and rounding approximately of the number 0.9
Answer:
We want to "chop and round" the periodic number 0.9 at 3 digits.
First, remember that we can write our periodic number as:
0.9 = 0.9999...
Such that the nine repeats infinitely.
Now we want to chop it at the third digit, and then round.
To chop at the third digit we just "cut" the number at the third digit after the decimal point, we will get:
0.9 ≈ 0.999
Now we round.
Remember that to round a number, we need to look at the last digit after the decimal point.
If the last digit is 5 or larger, we round up, adding 1 to the previous decimal.
If the last digit is 4 or smaller, we round down, don't adding anything to the previous decimal.
in our number:
0.999
The last digit is a 9, so we round up.
Then we add "1" to the previous decimal
but the previous decimal is a 9, so when we add 1, it will transform into a 10.
So it also adds one to the previous decimal, which also is a 9, so the process repeats, this time adding 1 to the decimal to its left, in this case, that decimal will be the first decimal at the left of the decimal point.
So after rounding, we will get:
0.999 ≈ 1
Then we can conclude that:
he 3 digit chopping and rounding approximately of the number 0.9 is 1"
School is stressful.
Also, I don't know what I am supposed to put in this text box.
Answer: A) 4
Explanation:
For any 30-60-90 triangle, the short leg is half as long as the hypotenuse.
The short leg is opposite the smallest angle (30 degrees), so we see that
x = 8/2 = 4.
The area of the surface of a pool table is 24 square feet. The perimeter is 22 feet. What are the dimensions of the pool table?
Answer: The dimensions are 8 and 3
Step-by-step explanation:
So 8*3=24 which corresponds with the formula for area l*w= Area
And perimeter means we add up all 4 sides so
8+8+3+3= 22
So the dimensions are 8 and 3
CX is an altitude in triangle ABC.
Which statements are true? Select two options. .
Answer:
Does the answer help you?
ranika wanted her friend radhika's mobile number. but radhika played a trick. she gave her the number as 9 X Y Z P 1 Q 2 R 3
Answer:
Ranika should have known since the series of letters and numbers Radhika gave her don't make out to be a legal phone number.
Step-by-step explanation:
what is 14.005 as a fraction
Answer:
[tex]14 \frac{5}{1000} [/tex]
Step-by-step explanation:
[tex]14.005 = 14 \frac{5}{1000} [/tex]
proper frac 14 1/200
improper frac 2801/200
A student correctly evaluated an expression with P = -2 and a = 3 and got 3 as the result. Which of the following expressions could she have been evaluating
Answer:
B
Step-by-step explanation:
A student correctly evaluated an expression where p = -2 and q = 3 and acquired 3 as the result.
And we want to determine which expression could the student have been evaluating.
Thus, we simply need to check each expression by letting p = -2 and q = 3 and see which one equals 3.
Checking the first one:
[tex]\displaystyle \begin{aligned} 3p^2 +2pq - 6q +2 &= 3(-2)^2+2(-2)(3)-6(3) + 2\\ &= (12)+(-12) +(-18) + 2 \\ &=-16\end{aligned}[/tex]
The result is not 3. Hence, A is not correct.
The second expression:
[tex]\displaystyle \begin{aligned} p^3 + 2p^2q-p^2+2pq+q &= (-2)^3+2(-2)^2(3)-(-2)^2+2(-2)(3)+(3)\\ &= (-8)+(24)-(4)+(-12)+(3) \\ &= 3\stackrel{\checkmark}{=}3\end{aligned}[/tex]
Therefore, we can conclude that our answer is B.
We can check the other two regardless.
The third expression:
[tex]\begin{aligned} p^2+q-4q^2 &= (-2)^2 + (3) - 4(3)^2 \\ &= (4) + (3) -(36) \\ &= -29\end{aligned}[/tex]
And the fourth:
[tex]\displaystyle \begin{aligned} p^2+3q^2-q^2+p &= (-2)^2+3(3)^2-(3)^2+(-2) \\ &= (4) + (27) - (9) + (-2) \\ &= 20\end{aligned}[/tex]
Thus, neither the third expression nor the fourth is also correct.
In conclusion, our answer is B.
Hello pls Asap plsssss
Please help me it’s due in 2 mins
82.053°??
(Tried going as fast as I can)
One-third of a number when subtracted from double of itself is equal to 10. Find the number.
2x−x3=10
X=?
Answer:
number is 6
Step-by-step explanation:
let the number be x , then double the number is 2x and
2x - [tex]\frac{1}{3}[/tex] x = 10 ( multiply through by 3 to clear the fraction )
6x - x = 30
5x = 30 ( divide both sides by 5 )
x = 6
That is the number is 6
Consider the following sequence: -5, -1, 3,...
a. Is this sequence a arithmetic or geometric? How can you tell?
b. Is 119 a term in this sequence? If so, what term is it? If not, why not? Explain completely.
Answer:
a. it is arithmentic - this is because for each term there is a constant increase of 4, and the change between each term doesn't change
b. you need to find the nth term, by using the equation difference x n + 0th term: the difference is (+)4 and the 0th term is -9 (-5 is the 1st term, so to go one back we subtract 4 - the inverse operation), so the nth term is 4n -9. Now we do the inverse operation on 119 to see if it's a term (it is a term if it's an integer. So, first we do 119 plus 9 (inverse of - 9) to get 128, then divide it by 4 rather than multiplying. This gives us 32, and that tells us that 119 is the 32nd term of the sequence.
subtact (7x+2) from (-6x+8)
(-6x+8)-(7x+2)
4 -6x + 8 -7x - 2
= -13x + 6
Answer:
Step-by-step explanation:
(-6x + 8) - (7x + 2) = -6x + 8 - 7x - 2 {Distribute property}
= (-6x - 7x) +( 8 - 2) {Combine like terms}
= -13x + 6
find the value of the trigonometric ratio.
Answer:
12/13
Step-by-step explanation:
sinX = opposite/hypotenuse = 12/13
Which function describes this graph?
A. y = (x+5)(x-3)
B. y = x^2+7x+10
C. y = x^2+5x+12
D. y=(x-2)(x-5)
Answer:
B is the answer
Step-by-step explanation:
Answer:
B. y = x^2+7x+10
Step-by-step explanation:
which expression is equivalent to 10 a+ 3b -2a+b
Answer:
Step-by-step explanation:
Simplify like terms.
10a-2a+3b+b = 8a+4b
Answer:
8a +4b
4(2a+b)
Step-by-step explanation:
10 a+ 3b -2a+b
Combine like terms
10a-2a +3b+b
8a +4b
We can factor out 4
4(2a+b)
Can anybody help this question?
Answer:
the first option
Step-by-step explanation:
really, just look at the table.
is the mean value (10.4) larger than the median (13.4) ?
I hope you can see right away that it is not.
and you can see they are not the same either.
so, all the answer options mentioning mean larger than median or equal to median can be ruled out right away.
so, it is between the first two options.
now think ! how do we draw number lines ? a coordinate axis ?
the smaller numbers left, the larger numbers right. the numbers grow from left to right.
the mean value is simply the sum of all measurements divided by the number of measurements (how many median were done). if that is smaller that the median (so, the Mean is left of the Median), it means that the majority of measurements had a result smaller (to the left) than the Median. so, it is skewed-left.
What is the value of the expression below when z=4?
10z-3
Answer:
37
Step-by-step explanation:
10z - 3 = 10(4) - 3
=40-3
=37
Answer:
37
Step-by-step explanation:
10*4-3 (z=4)
40-3
37
Hope it helps you
v2 = u2 + 2as
u = 12
a = -3
s = 18
work out v
[tex] {v}^{2} = {u}^{2} + 2as \\ {v}^{2} = 144 - 108 \\ {v}^{2} = 36 \\ v = 6 , -6 \: [/tex]
Rewrite in multiplication please
Answer:
8*4+3*2
Step-by-step explanation:
Answer:
8*4 + 3*2Step-by-step explanation:
8*4 + 3*2
= 32 + 6
= 38//
The question asks to rewrite it using multiplication. It's not asking to simplify. Then the answer is 8*4 + 3*2.
PLEASE HELP I WILL GIVE BRAINLIEST!
Find the value of x
It will be 50° as it's adjacent to each other
I need help this is urgent
Write an equation of the line below
How can I express this as a single power with positive exponents?
Answer:
5^1
Step-by-step explanation:
[tex]\sqrt{5} =5^{\frac{1}{2} }[/tex] (law of indices - fractional powers)
after converting all the numbers to this form:
[tex]\frac{5^{{\frac{2}{3} } } * 5^{\frac{1}{2} } }{5^{\frac{1}{6} } } \\[/tex]
combine using law of indices:
5^(2/3+1/2-1/6) = 5^1
b) The price of a radio is marked as Rs 7,500. If the shopkeeper allows 20 % discount and adds 13 % VAT, how much will a customer pay for the radio?
Answer:
the customer should pay Rs.6780 including VAT.
Step-by-step explanation:
here,
Marked price(MP)=7500
Discount(D)=20%
VAT=13%
now,
selling price(SP)=MP-D%of MP
=7500-20×7500/100
= 7500-1500
= Rs 6000
again,
SP with VAT = SP +VAT of SP
= 6000+13×6000/100
=6000+780
=Rs.6780
hence,
the customer should pay Rs. 6780 including VAT.
9.
For which discriminant is the graph possible?
A. b2 – 4ac = 3
B. b2 – 4ac = –4
C. b2 – 4ac = 0
Answer:
C. b2 – 4ac = 0
Step-by-step explanation:
Find the surface area of solid given the net.
I WILL MARK YOU AS BRAINLIEST IF YOU ANSWER THIS QUESTION!!
Answer:
2296 unit^2
Step-by-step explanation:
The area is the sum of the 6 rectangles in the net.
= 38*10 + 38*16 + 38*10 + 38*16 + 10*16 + 10*16
= 380 + 608 + 380 + 608 + 160 + 160
= 2296.
Instructions: Find the missing side. Round your answer to the nearest
tenth.
63°
19
х
X =
Answer:
x = 37.3
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
tan theta = opp/ adj
tan 63 = x /19
19 tan 63 =x
x=37.28959
To the nearest tenth
x = 37.3
Given that ABCD is a rhombus, what is the value of x?
B
C.
(3x + 12)
D
A. 19.5
B. 78
C. 15.8
D. 26
E. 52
F. Cannot be determined
Answer:
Diagonals of a rhombus intersect at right angles
Therefore, [tex]\angle AOD=90[/tex]
[tex]Now,in\: \bigtriangleup AOD[/tex]
[tex]\angle OAD+\angle AOD+\angle ADO=180[/tex]
[tex]x+90+3x+12=180[/tex] [tex]\leftarrow [combing \: like\: terms][/tex]
[tex]4x+102=180\\-102 \: -102[/tex] [tex]\leftarrow [subtracting \:102 ][/tex]
[tex]\frac{4x}{4} =\frac{78}{4} \leftarrow [dividing \: by\: 4][/tex]
[tex]x=19.5[/tex] [tex]\Longleftarrow[/tex]
OAmalOHopeO
