Answer:
$1.33 per student
Step-by-step explanation:
Mr. Luu spent 15.99 on new flashlights.
Total number of students = 12
We need to find the unit cost per student. It can be calculated by dividing the total cost and the total number of students.
[tex]C=\dfrac{15.99}{12}\\\\C=1.33[/tex]
So, the required cost per student is 1.33.
A number divided by –8 is 7.
Equation:
Steps:
Solution:
Answer:
.
Step-by-step explanation:
Answer:
-56
Step-by-step explanation:
Let the said number be x, so
x / -8 = 7
That's the equation
On solving further, we cross multiply to have
x = -8 * 7
x = -56
That means the number is -56
PLS HELP ME!!! which matrix represents the system of equations below {8x-9y+13z=11
{-8x-5y+5z=15
{3x+4y-8z=-10
Answer:
The answer is below
Step-by-step explanation:
The system of equations:
8x-9y+13z=11
-8x-5y+5z=15
3x+4y-8z=-10
The equations can be represented in matrix form as:
AX = B
X = A⁻¹B
Therefore:
[tex]\left[\begin{array}{ccc}8&-9&13\\-8&-5&5\\3&4&-8\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{c}11\\15\\-10\end{array}\right]\\\\\\\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}8&-9&13\\-8&-5&5\\3&4&-8\end{array}\right] ^{-1}\left[\begin{array}{c}11\\15\\-10\end{array}\right]\\[/tex]
[tex]\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}\frac{1}{19} &-\frac{1}{19}&\frac{1}{19}\\-\frac{49}{380}&-\frac{103}{380}&-\frac{36}{95} \\-\frac{17}{380}&-\frac{69}{380}&-\frac{28}{95} \end{array}\right] \left[\begin{array}{c}11\\15\\-10\end{array}\right]\\\\\\\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{c}-0.74\\-1.69\\0.13\end{array}\right] \\[/tex]
solve the inequality 31< 3x+4
help i am almost done
Question 5
Maria can bake 35 cookies in of an hour. How many cookies can
she make in 4 hours?
Answer:
140
Step-by-step explanation:
just mutiply 35 by 4, thats h0w i g0t it anyways, h0pe this helped :)
Answer:
its 140 in 4 hours
Step-by-step explanation:
hope this helps!
Find the measure of each angle
Answer: x=36°
Step-by-step explanation:
The four interior angles of a quadrilateral always equal 360°, so:
(x+16)+(4x-8)+(4x-8)+x=360
Combine like terms:
360=10x+0
360=10x
36=x
Answer:
In image below
Step-by-step explanation:
Triangle ABC is graphed on a coordinate plane with vertices at A(-3, 7), B(9,-8), and C(-5, -6). If triangle ABC is dilated
by a scale factor of 2 with the origin as the center of dilation to create A'B'C', what will be the coordinates of the dilated
vertex of B'?
Answer:
B' = (18, -16)
Step-by-step explanation:
Dilating means to stretch or shrink a figure. The scale factor tells us how much we are stretching or shrinking. The scale factor is 2, so the coordinates are multiplied by 2.
Olivia wants to know the proportion of students at her school who use a
certain social media app. She interviews a random sample of students at
her school. She finds that 30% of the students in the sample use the app.
What conclusion can she draw from the sample?
А
It is likely that about 30% of the students at her school use the app.
B Exactly 30% of the students at her school use the app.
Every random sample would find that 30% of the students use
the app
It is likely that 30% of the students at her school were selected for
the sample.
Answer:
A
Step-by-step explanation:
Random sampling is a sampling method where each sample has an equal chance of being chosen. The random sample chosen is meant to be an unbiased representation of the population.
If 30% of the sample uses the app, it means that 30% of the population are likely to use the app
20 POINTS! 2 + 4n = 11. What is the answer?
Answer:
I think the answer would be n = 9/4
A scale drawing of a building shows 1 inch = 8 feet. How many feet are represented by 3 ¾ inches on the drawing?
Answer:
30 feet
Step-by-step explanation:
3x8=24 ft
3/4x*8= 6 ft
A group of 12 adults and 26 children go to a theme park.
The total cost of tickets was £1804.80
And adults ticket costs £51.60
Find the cost for a child
Answer:
45.56923076923077
Step-by-step explanation:
Work out 51.6 x 12 which is 619.2 and subtract that from 1804.80 then x your answer which is 1,184.8 and divide by 26 to get your answer which is 45.569....
Help! I can’t wait, if you don’t know don’t anwser just to get points
Answer:
the answer is 6.
-9
-8(1)
-7(2)
-6(3)
-5(4)
-4(5)
-3(6)
Can someone pls help me solve? (20 points)
Answer:
liar is 10
Step-by-step explanation:
Answer:
J. [tex]x=125[/tex]
Step-by-step explanation:
[tex]log_{2} 24 - log_{2}3 =log_{5} x[/tex]
[tex]4.5- 1.5 =log_{5} x[/tex]
[tex]x=(log_{5})^{-1} (3)[/tex]
[tex]x=125[/tex]
If gas costs $3.19 per gallon, how many whole
gallons of gas could you buy with $42.00?(Make sure to use a whole number)
Answer:
13 gallons
Step-by-step explanation:
42 / 3.19 = 13.166144200626959,
which can be rounded down to 13 whole gallons.
Answer:
13 GALLONS
Step-by-step explanation:
If gas costs $3.19 per gallon, how many WHOLE
gallons of gas could you buy with $42.00?
$42= 13.17 gallons
how many WHOLE gallons? :
13 gallons
PLEASE ILL GIVE 15 POINTS AND BRAINLIEST
A tile pattern on a wall is made up of two identical parallelograms and three identical triangles.
What is the area of the tile pattern?
Answer: 180
Step-by-step explanation:
Answer: 448 inches, I’m pretty sure hope it helps
If f(x) = 2x - 10, what is f(4)?
O A. -18
B. 8.
C. - 2
D. 2
Answer:
The answer is -2 or C
Step-by-step explanation:
Just input 4 into the equation as x. f(4)=2(4)-10. This gets you 8-10 which is -2. Hope this helps!
Answer:
hey there, person with the same name as me lol. the answer is c. -2
Step-by-step explanation:
in the question they showed that f(x) = 2x - 10
when they ask for the value of any number like f(4)
just replace the variable with this number
for this it will be
2x - 10 = 2 * 4 - 10
which is 8-10
which is equal to -2
you're welcome....
4k + 2 - k + 7 just answer it
Answer:
3k + 9
Step-by-step explanation:
Lupita bought 7 pounds of pretzels at a local wholesaler for $16.80. Her friend Charles bought 5 pounds of pretzels at the supermarket for $12.75. Charles thinks he got the better deal because $12.75 is less than $16.80. Is Charles’s reasoning correct? Explain why or why not.
Answer:
Charles's reasoning is wrong.
Step-by-step explanation:
Lupita has 7 pounds for 16.8 and Charles has 5 pounds for 16.8.
Let's set up ratios.
So Lupita got the best deal, not Charles. Poor him.
please helpp pleasee!!!
Answer:
The second choice. Because the x-coordinate in the second choice is constant unlike the others, which is a property of a function.
Neeeeddddd helllppp nowwwwww!!!!
Answer:
the area is 670.32 but it's not in there
George spent 1 ½ hours studying on Monday, and 1 ⅔ hours studying on Tuesday. If he spent ¼ of the total time studying math, what fraction of an hour did George spend studying math?
Using the common denominator, what is an equivalent fraction for 2/7
?
Answer:
The fraction 4/14 is equal to 2/7 when reduced to lowest terms. To find equivalent fractions, you just need to multiply the numerator and denominator of that reduced fraction (2/7) by the same interger number, ie, multiply by 2, 3, 4, 5, 6
How many 1/3 inch cubes does it take to fill a box with width 2 2/3 inches, lengths 3 1/3 inches, and height 2 1/3 inches?
Answer:
560 cubes
Step-by-step explanation:
width: 8 cubes
length: 10 cubes
height: 7 cubes
volume: 8*10*7=560
divided l, w, and h by 1/3 to get them in cubes
Answer:
Step-by-step explanation:
The awnser is multiply by 9 then multiply by 2
If a varies jointly as b and c,
and a=6 when b=2 and a=3.
Find the variation constant and
the equation of variation.
Given:
a varies jointly as b and c.
a=6 when b=2 and a=3.
To find:
The variation constant and the equation of variation.
Solution:
a varies jointly as b and c.
[tex]a\propto bc[/tex]
[tex]a=kbc[/tex] ...(i)
Where, k is the constant of proportionality.
a=6 when b=2 and a=3.
[tex]6=k(2)(3)[/tex]
[tex]6=6k[/tex]
[tex]\dfrac{6}{6}=k[/tex]
[tex]1=k[/tex]
The value of k is 1.
Putting k=1 in (i), we get
[tex]w=1xy[/tex]
[tex]w=xy[/tex]
Therefore, the variation constant is 1 and the equation of variation is [tex]w=xy[/tex].
a bat and a baseball costs $1.10. the bat costs $1 more than the ball. how much does the ball cost?
Answer: 0.10
Step-by-step explanation:
because u said that the bat was 1.00 more than the ball so the ball would be 0.10
Someone help please I need help!!
Answer:
hello
Step-by-step explanation:
adjacent angles are equal to 180 degrees,
[tex](2x + 9) + (5x + 3) = 180 \\ 8x + 12 = 180 \\ 8x = 180 - 12 \\ 8x = 168 \\ x = \frac{168}{8} \\ x = 21 \\ \\ [/tex]
but, for some reason, does not match the answers…
Can the answers be wrong?
or I miscalculated…
i hope it helps have a nice day
Answer:
24
Step-by-step explanation:
(2x + 9 )+ (5x + 3) = 180
x = 24
(I just guessed and checked. It was multiple choice so why not?)
Can anyone give me the awnser?
Answer:
Step-by-step explanation:
You want to reverse the algebra and solve for y. First you want to subtract the 'a' to both sides.
x - a = -2by^2
Divide by -1 on both sides
-x + a = 2by^2
Divide by 2b on both sides
(-x + a)/2b = y^2
Take the square root of both sides
[tex]\sqrt{(-x+a)/2b}=y[/tex]
PLS JUST GIVE ME ALL THE ANSWERS TO THIS WORKSHEET I BEG U ANYONEEE
5+(-3) show it in a number line
Answer:
i got 2 hope thats helps
Step-by-step explanation:
Answer:
Step-by-step explanation:
it says I have 4 cups of white paint for 3 cups of red paint? what is the equivalent for 1 cup of red paint in white paint?
Answer:
1 cup of red paint = 4/3 or 1 1/3 cups of white paint
