Answer:
a
Step-by-step explanation:
find the value of x when 3x^2-4= -4
Answer: 0
Step-by-step explanation:
tell me a FUNEI i need a laguf pls and thx
Consider the glven solids with the dimensions shown. Which solids are similar?
A. only figure 1 and figure 2
B. only figure 1 and figure 3
C. only figure 2 and figure 3
D. all three figures
Answer:
A) only figure 1 and figure 2
Step-by-step explanation:
Answer: Choice A) only figure 1 and figure 2
===========================================================
Explanation:
Let's assume that figure 2 is similar to figure 3.
If this is the case, then the horizontal portions would divide to 30/15 = 2, showing that figure 3 has sides that are twice as long compared to figure 2. But then notice that the vertical sides divide to 36/24 = 1.5, which doesn't match with the previous result of 2.
Figures 2 and 3 cannot be similar for that reason.
Also, figures 1 and 3 are not similar either. Note the horizontal portions divide to 30/10 = 3 while the vertical portions divide to 36/16 = 2.25; the results 3 and 2.25 don't match.
We eliminate answers B, C and D. The only thing left is choice A.
-------------------
To verify choice A is true, we divide each corresponding piece like so
Horizontal: 15/10 = 1.5Vertical: 24/16 = 1.5Slanted: 12/8 = 1.5Each division leads to the same result of 1.5, meaning that figure 2's side lengths are 1.5 times longer than the corresponding side lengths of figure 1. So this confirms that figure 1 is similar to figure 2.
Math questions plss mark u brainlist
Answer:
4
Step-by-step explanation:
Hello There!
The slope is the change in y over the change in x
In the table as y goes up 4 x goes up 1
so the slope is 4/1 or 4
Find the volume of the cone.
13 cm
n = 9 cm
Answer:
V = 1102.7 cm^3
Step-by-step explanation:
1. Volume of Cone Formula
[tex]V=\frac{1}{3}*h*\pi *r^{2}[/tex]
2. Variables: h = 13 cm r = 9 cm
3. Plug in numbers
[tex]V=\frac{1}{3}*13*\pi *9^{2}[/tex]
V ≈ 1102.69 cm^3
Which of the following is true about the diagonals of a rectangle? Select all that are true.
Diagonals bisect each other.
Diagonals are congruent.
Diagonals are perpendicular.
Diagonals bisect the angles.
Answer:
Diagonals bisect each other.Diagonals are congruent.Diagonals are perpendicular.Diagonals bisect the anglesMr. Math invested $300 in an investment that is guaranteed to grow 5% per
year (compounded interest). How much will he have in three years?
Answer:45 Don't take the answer might be wrong
Step-by-step explanation:
Bryan has a collection of nickels and quarters for a total value of $4.90. If he has a total of 42 coins, how many of each kind are there?
Answer:
Hope this helps!
Step-by-step explanation:
Bryan has a collection of nickels and quarters for a total value of 4.90.if she has 42 coins total how many of each kind are there
Help anyone pls I need help
its c wich is 57 i think. oh yea its c
please help me with my math look at picture
A class of 23 pupils has six more boys than girls. Let n = the number of girls. Select the equation that most accurately depicts the word problem.
n + (6 - n ) = 23
n + ( n + 6) = 23
n + 23 = n + 6
Answer:
Step-by-step explanation:
the first one becouse of the ratio 6:1
we know it cant be c there is no possible way so
its either a or b
if n=number of girls
6- girls and plussing will give you the correct answer
it is minus becouse of the ratio adding will give you more than the value
and minus will give exact value
Answer: n + ( n + 6) = 23
please help me with this question
Answer:
[tex]y=-2\\[/tex]
Step-by-step explanation:
Use the values of the unit circle to get the (x,y) when Θ=[tex]\frac{11\pi}{6}[/tex], which is [tex](\frac{\sqrt{3}}{2}, -\frac{1}{2})[/tex].
The cosecant (csc) function is the reciprocal of the sine function, so we take the y value and take the reciprocal of it, which is -2.
If I helped, a brainliest answer would be greatly appreciated.
Help plz the faster the better anyone :(
Answer:
10.080229881683 yards2
Step-by-step explanation:
Christina Fox took out a simple interest loan at 5 percent for 12 months. Her previous balance is $200. What is the interest for the next payment?
a. $0.83
b. $0.99
c. $0.59
d. $1.37
Answer:
a. $0.83
Step-by-step explanation:
Calculation for the interest for the next payment
Using this formula
Next payment Interest=Previous balance*Simple interest loan percentage/Numbers of months
Let plug in the formula
Next payment Interest=$200*0.05/12
Next payment Interest=0.83
Therefore the interest for the next payment will be 0.83
Answer:
the answer is "A. $0.83........What type of slop..
Undefined
Positive slope
Zero slope
Negative slope
Answer:
zero slope
Step-by-step explanation:
Answer:
it's a zero slope
Step-by-step explanation:
What can you tell me about 1/3 of 30
Answer:
10
Step-by-step explanation:
1/3 of 30 is 10 because 3 times 10 is 30
Answer: i could tell you that it is equaled to 10
Step-by-step explanation:
Mark me as brainliest plus extra points9x + 3y = 6 and 3x + 9y = 6
Tell whether the lines are parallel, perpendicular or neither:
a)neither
b)parallel
c)perpendicular
Answer:
neither
Step-by-step explanation:
Have a great day!
Aubree has a points card for a movie theater.
She receives 80 rewards points just for signing up.
• She earns 12.5 points for each visit to the movie theater.
She needs at least 175 points for a free movie ticket.
Answer:
8 visitsStep-by-step explanation:
175 - 80 =
95 / 12.5 =
7.6
That means 8 trips
Hope that helps!
Answer:
8 visits
Step-by-step explanation:
Elizabeth bought 8 chicken wings for $10.40. How much does each wing cost?
Answer:
$1.30
Step-by-step explanation:
If 8 chicken wings is $10.40, to find the amount per chicken wing $10.40 gets divided by 8.
I think it's 0.8 wing per dollar
Which graph shows a proportional relationship between x and y?
Answer:
B
Step-by-step explanation:
The one that goes through the middle
Hope this helps
Are these two lines parallel, perpendicular or neither
Answer:
parallel
Step-by-step explanation
Sonia graphs the equations y = –x2 + 4x and y = x – 4 to solve the equation –x2 + 4x = x – 4. Her graph is shown below.
Answer:
C.–1 and 4
Step-by-step explanation:
Solving the equations y = –x² + 4x and y = x – 4
–x² + 4x = x – 4
x² - 4x + x = 4
x² - 3x = 4
x² - 3x + (3/2)² = 4 + (3/2)²
(x - 3/2)² = 4 + 9/4
= 6.25
x - 3/2 = √6.25 or x - 3/2 = -√6.25
x = 2.5 + 1.5 x = -2.5 + 1.5
= 4 = -1
Answer: C -1 and 4
Step-by-step explanation:
Edge
[tex](x - 7)(x - 5) = 3[/tex]
Answer:
x = 4, x = 8
Step-by-step explanation:
Given
(x - 7)(x - 5) = 3 ← expand factors using FOIL
x² - 12x + 35 = 3 ( subtract 3 from both sides )
x² - 12x + 32 = 0 ← in standard form
(x - 4)(x - 8) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 4 = 0 ⇒ x = 4
x - 8 = 0 ⇒ x = 8
The length of a rectangle is 5 yd less than twice the width, and the area of the rectangle is 33 yd?. Find the dimensions of the rectangle.
Answer:
Step-by-step explanation:
L=2W-5
A=LW, using L from above gives you
A=(2W-5)W
A=2W^2-5W
2W^2-5W-A=0, since A=33yd^2
2W^2-5W-33=0
2W^2+6W-11W-33=0
2W(W+3)-11(W+3)=0
(2W-11)(W+3)=0, since W>0
W=11/2
W=5.5yd, since L=2W-5
L=6yd
So the dimensions are W by L, 5.5yd by 6yd
Are the events "selecting a female" and "selecting a students who has brown eyes" independent?
Answer:
No, the events are not independent.
Step-by-step explanation:
Suppose that there are two events, A and B.
Such that first happens the event A and then the event B.
If the outcome of event A affects the probabilities for the different outcomes of event B, then the events are dependent.
In this case, if we have only the event "selecting a student who has brown eyes" (at random)
The probability is equal to the quotient between the total number of students with brown eyes, and the total number of students, then this probability is:
P = 91/200 = 0.455...
Now, if we first impose the "selecting a female", now when we want to select a student with brown eyes we will look only at the female students.
In this case, there are 32 with brown eyes and a total of 90 female students, then the probability of selecting a female with brown eyes at random is:
P = 32/90 = 0.355...
So the probability is different, which means that the events "selecting a female" and "selecting a student who has brown eyes" are not independent.
What is the volume of the prism below?
Answer:
v=Bh
B=6×4.5
v=27×9
v=243ft³
need this one 12.8+0.4
Answer:
13.2
Step-by-step explanation:
12.8+0.4=13.2
because 0.8 +0.4=1.2 so drag the one to 12 so 12 +1 = 13.2
Answer:
13.2
Step-by-step explanation:
12.8
+
0.4
________
13.2
Hope u have a great day/night!
Sandeep uses 1/5 of a cup of vinegar in his salad dressing recipe. How much vinegar would Sandeep use to make 4/5 of a recipe?
Answer:
4 /25
Step-by-step explanation:
Given that :
Cup of vinegar used per recipe = 1/5 cup
Amount of vinegar to be used for 4/5 of a recipe ;
1 cup recipe = 1/5 cup vinegar
4/5 cup recipe = x
Cross multiply :
x = 1/5 * 4/5
x = 4/25 cup
Hence, Sandeep will use 4/25 cup of vinegar
Jessica is selling girl scout cookies and recorded how many she sold in one afternoon. She sold Thin Mints, Trefoils, and Samoas.
2a. She sold 54 boxes of Thin Mints, which was 60% of the total number she sold. How many total boxes did she sell? (3 points – 2 pts for correct answer, 1 pt for showing work)
2b. If 60% of the cookies sold were Thin Mints and 10% of the cookies sold were Samoas, how many boxes of Trefoils did she sell? (3 points – 2 pts for correct answer, 1 pt for showing work)
Answer:
a) 90 boxes
b) 27 boxes
Step-by-step explanation:
Please see the attached picture for the full solution.
Answer:
a-90
b-27
Step-by-step explanation:
The line represented by the equation 4y + 2x = 33.6 shares a solution point with the line represented by the table below. The solution for this system is:
Answer:
(6.0)(5.4)
Step-by-step explanation:
First we have to find the equation of the line represented in the table; for that we have to find it's slope and it's y-intercept and then write it in the following form:
The slope of the line we get from first two points:
thus we have
we find by putting the point into the function:
Thus we have
Now we have to find where this line intersects with ; to do this we just substitute with :
We have the x-coordinate of the intersection.
We find the y-coordinate by substituting into :