Answer:
-4
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
20-12 = 8
8 times 2= 16
hope this helps :)
There are 400 students in a school hall. 240 of them are boys. How many percent more boys than girls are there?
Answer: 20 percent
The school hall is 60 percent boys and 40 percent girls.
Allan bought a sweater
for $78 and a shirt for
$29. How much more did
the sweater cost than
the shirt
Answer:
$49
Step-by-step explanation:
78 - 29 = 49
To get 49, I subtracted 29 from 78.
A shoe store costs 1800 dollars a month to operate. The average wholesale cost of each pair of shoes is 25 dollars, and the average price of each pair of shoes is 65 dollars. How many pairs of shoes must the store sell each month to break even?
Answer: 45
Step-by-step explanation:
The store has to sell
45
pairs of shoes.
Explanation:
The store has a base cost of
$
1800
, the cost per pair of shoes is
$
25
. Each pair of shoes is sold for
$
65
, therefore the profit per pair of shoes is
$
65
−
$
25
=
$
40
The formula for calculating the amount that needs to be sold would look like this;
40
x
=
1800
To determine the value of
x
, we take this formula;
x
=
1800
40
x
=
45
Therefore, the store needs to sell
45
pairs of shoes to break even.
The graph shows the soulution
Answer:
B. (3, -2)
Step-by-step explanation:
The solution of the system of the equations given, can be determined using the graph. The coordinate of the point where the two lines of both equations intersect is the solution.
Both lines intersect at x = 3, when y = -2.
Therefore, the solution would be (3, -2).
Help 3/4× 2 1/4 plsss
Answer:
Step-by-step explanation:
3/4 x 9/4 = 1.6875 or 27/16
Answer:
1[tex]\frac{11}{16}[/tex]
Step-by-step explanation:
When multiplying mixed numbers, you would want to turn them into improper fractions first before evaluating.
[tex]\frac{3}{4}[/tex] × 2[tex]\frac{1}{4}[/tex] = [tex]\frac{3}{4}[/tex] × [tex]\frac{9}{4}[/tex]
Now you can just directly multiply the fractions (denominators with denominators and numerators with numerators)
[tex]\frac{3}{4}[/tex] × [tex]\frac{9}{4}[/tex] = [tex]\frac{27}{16}[/tex]
You know that is still an improper fraction, so you need to turn it back to a mixed number.
[tex]\frac{27}{16}[/tex] = 1[tex]\frac{11}{16}[/tex]
I just need the answer
Answer:
The answer is B
Step-by-step explanation:
Your welcome
f(x) = -2x^3 + 3(x + 2). Does this mean that it's f(3) = -39
Answer:
Step-by-step explanation:
lets replace x with 3
f(3)= -2(3)^3+3(3+2)=-2*27+15=-54+15=-39
A band expects to put 16 songs on their next CD. The band writes and records 50% more songs than
they expect to put on the CD. During the editing process, 62.5% of the songs are removed. How many
songs will there be on the final CD?
Answer: this is wrong there will be 28
Step-by-step explanation:
Answer:
Its 9
Step-by-step explanation:
Solve each system .If a system's equations are dependent or if there is no solution,state this .
Please answer!
9514 1404 393
Answer:
(x, y, z) = (-8 2/7, -10, -7 3/7)
Step-by-step explanation:
A graphing calculator or matrix solver can find the solution easily. It is ...
(x, y, z) = (-8 2/7, -10, -7 3/7)
__
You can find y by subtracting the second equation from the third:
(2x -y +z) -(2x -3y +z) = (-14) -(6)
2y = -20
y = -10
Putting this value into the first equation and either of the others gives ...
x -3z = 14
2x +z = -24
Subtracting twice the first of these from the second gives ...
(2x +z) -2(x -3z) = (-24) -2(14)
7z = -52
z = -52/7 = -7 3/7
x = 14 +3(-7 3/7) = -8 2/7
So, the solution is (x, y, z) = (-8 2/7, -10, -7 3/7).
Answer:
Step-by-step explanation:
No Solution!
What is the equation of the line that crosses the y-axis at 2 and has a unit rate of 8/2
Answer:
Step-by-step explanation:
P1 = (0,2)
M =8/2= 4
y-2=4(x-0)
y-2 = 4x
y= 4x +2
:)
Evaluate the expression for the given values.
4ab8c, where a = 8, b = 4, and c=12
Enter your answer in the box.
plz halp
Answer:
4ab8c
4(8)(4)(8(12)
(32)(38)(12)
(1216)(12)
14592
Step-by-step explanation:
14.
Which of the following word problems can be solved using the equation 3x + 6 = 24?
Answer: B
Step-by-step explanation:
Based on the data given in the..etc help fast
I don't really know but I believe it is:
Rounded to the nearest thousandth, the conditional relative frequency that an eleventh grader likes tennis is 69%.
ROunded to the nearest thousandth, the conditional relative frequency that a twelfth grader likes tennis is 51%.
Since 51% is less than 69%, a greater percent of eleventh grader like tennis.
Use the graph to answer the questions help!
Answer:
0; 2; 6; 0 or -1
Step-by-step explanation:
If the question says "f(a)=" they are asking for the y value with the given x such as the two first ones.
If it's "f(x)=a than x=" they are asking you what x is when the (bolded) x is a given value.
There are 10 triangles and 4 circles. What is the simplest ratio of circles to total shapes?
Answer: 5:2
Step-by-step explanation:
Well, you are going to find a number they both divide by in this case it is 2
10/2=5
4/2=2
Now when rewriting your numbers make sure to put what comes first first
5:2
5 and 2 can not be divided evenly anymore so your final answer is 5:2
Hope this helped!
geo question
A)
Segment addition postulate
B)
All sides of a square are congruent.
C)
Angle addition postulate
D)
Corresponding angles postulate
-12 + 3p = 3
what does p equal
Answer:
p=5
Step-by-step explanation:
Answer:
p = 5
Step-by-step explanation:
-12 + 3p = 3
3p = 3 + 12
= 15
p = 15 ÷ 3
p = 5
I CAN GIVE BRAINLIEST PLEASE HELPPP
Answer:
the slope is 3/1 or 3
Step-by-step explanation:
you look at a point where the line goes thru the graph lines and count spaces in between
dont forget to mark me brainliest plzzzz
Answer:
the answer is 3/1 or 3
Step-by-step explanation:
don't forget to brainliest me please.
(6-8)(9-10)-(4+2)(6+3)
Simplify the expression.
− 52
Answer:
Solution in photo
Step-by-step explanation:
The price of a video game was reduced from 60 to 45 . By what percentage was the price of the video game reduced
Answer:
The price was reduced from $60 to $45 - So the price was reduced by $15. $15 is what percent of the original price of $60? Percentages can be expressed as fractions or decimals. For example, 30% is the same as 0.30 or 30/100.
Help pls I really need it
Answer:
Infinite number of solutions
Step-by-step explanation:
when you solve for V, you notice that the term in "v" goes away, and you end up with a true statement:
2 = 2
This is a true statement no matter what values the variable V has, so it is true for all possible (infinite) values of "v".
What fractions are equivalent to terminating decimals?
Option B since -7/15 equals -0.4666...
Hope it helps!
Find the value of x and y. Show all your work neat and
in order.
Answer:
x = 21°
y = 29°
Step-by-step explanation:
a) Solving for x
Note that:
(3x - 3)° and 60° are Alternate interior angles, and alternate interior angles are equal to each other, hence:
3x - 3 = 60° (Alternate interior angles)
Add 3 to both sides
3x - 3 +3 = 60 + 3
3x = 63°
x = 63°/3
x = 21°
b) Solving for y
Notes that:
(3x - 3)° and (4y + 4)° are Consecutive interior angles and the sum consecutive interior angles is 180°
3x - 3 + 4y + 4 = 180°
3x + 4y - 3 + 4 = 180°
3x + 4y + 1 = 180°
Note that x = 21
Hence
3(21) + 4y + 1 = 180°
63 + 1 + 4y = 180°
64 + 4y = 180°
Subtract 64 from both sides
64 - 64 + 4y = 180° - 64
4y = 116°
y = 116/4
y => 29°
Write an equation in slope-intercept form for the line that goes through points (1.4, 0) and (1, –2).
Answer:
y=5x-7
Step-by-step explanation:
1. find slope
-2-0
1-1.4
is 5
2. find y intercept
y-0=5(x-1.4)
y=5x-7
Answer:
5x - 7
Step-by-step explanation:
What is the following quotient?
Answer: Choice B) [tex]\frac{5\sqrt{11}+5\sqrt{3}}{8}\\\\[/tex]
==========================================
Work Shown:
[tex]\frac{5}{\sqrt{11}-\sqrt{3}}\\\\\\\frac{5(\sqrt{11}+\sqrt{3})}{(\sqrt{11}-\sqrt{3})(\sqrt{11}+\sqrt{3})}\\\\\\\frac{5\sqrt{11}+5\sqrt{3}}{(\sqrt{11})^2-(\sqrt{3})^2}\\\\\\\frac{5\sqrt{11}+5\sqrt{3}}{11-3}\\\\\\\frac{5\sqrt{11}+5\sqrt{3}}{8}\\\\\\[/tex]
This shows why choice B is the answer.
---------------
Explanation:
In the second step, I multiplied top and bottom by [tex](\sqrt{11}+\sqrt{3})[/tex]This is so we can apply the difference of squares rule in step 3. The difference of squares rule is (x-y)(x+y) = x^2-y^2.In step 4, the square roots cancel out with the squaring operation. The two operations are inverses of one another, which is why they cancel.So in general, if the denominator is [tex]\sqrt{a}-\sqrt{b}[/tex] and you want to rationalize the denominator, then you should multiply top and bottom by [tex]\sqrt{a}+\sqrt{b}[/tex]. The same applies in reverse as well.
This leads to the denominator becoming [tex](\sqrt{a}-\sqrt{b})(\sqrt{a}+\sqrt{b}) = (\sqrt{a})^2-(\sqrt{b})^2 = a-b[/tex]
Keep in mind that [tex]a \ge 0[/tex] and [tex]b \ge 0[/tex]
convert 208 in base 10 to binary number
Step-by-step explanation:
208
= 128 + 64 + 16
= 1 * 2⁷ + 1 * 2⁶ + 1 * 2⁴
= 11010000. (base 2)
what is the area of this trapezoid?
plss help
i will telling you a brainlist!!!
Answer:
30in²
Step-by-step explanation:
A=1/2(4)(5+10)
A=2x15
A=30in²
PLEASE ANSWER IM DESPERATE
Lincoln bought 3 bottles of an energy drink for $4.50. Write an equation relating the total cost y to the number of energy drinks bought?
Answer:
y=1.50x ...........
Step-by-step explanation:
Let x be the per-bottle price of the energy drink. Then:
3x=y=4.50
x=4.50/3
=1.50
Then:
y=1.50x ...................
mr johnson is grading english essays hes determined that he must grade 124 essays and that he can grade 8 per day how many days will it take mr johnson to grade all of the english essays
Answer:
16
Step-by-step explanation:
It shows the mulitplication bettween eachother.
What is the difference of –96.43 – (–98.67)?
Answer:
2.24
Step-by-step explanation:
This problem can actually be changed from a subtraction problem to an addition problem. Two negative signs together make a positive.
So, the problem becomes:
-96.43
+ 98.67
Now, remember this phrase to help solve problems like this:
Same sides add and keep. Different signs subtract. Keep the sign of the higher number.