Answer:
(30x2)x2
Step-by-step explanation:
Answer:
Step-by-step explanation:
O
what is the time 5
Linear combination of matrices .
Multiplying a matrix by a scalar is equivalent to multiplying each entry in the matrix by that scalar:
[tex]A=\begin{bmatrix}0&-3\\-5&5\end{bmatrix}\implies3A=\begin{bmatrix}0&-9\\-15&15\end{bmatrix}[/tex]
[tex]B=\begin{bmatrix}-2&-6\\2&5\end{bmatrix}\implies-6B=\begin{bmatrix}12&36\\-12&-30\end{bmatrix}[/tex]
Now combine them:
[tex]3A-6B=3A+(-6B)=\begin{bmatrix}0+12&-9+36\\-15+(-12)&15+(-30)\end{bmatrix}=\begin{bmatrix}12&27\\-27&-15\end{bmatrix}[/tex]
Find the best buy for
a)
shampoo if 8 ounces cost $0.99 and 12 ounces cost $1.47.
b) cereal if 31 ounces cost $1.50 and 16 ounces cost $0.77.
c) soda if 3 cans cost $1.77 and 5 cans cost $1.79.
PLEASE HELPPP
Answer:
A. 12 oz. for $1.47
B. 16 oz for $0.77
C. 5 cans for 1.79
Step-by-step explanation:
A. Divide them both, cost by quantity.
0.99/8=0.123
1.47/12=0.1225
The second option is better since its 0.005 less than the first option.
B. Again, divide both options.
0.77/16=0.04125
1.50/31=0.04838
Second option because it is 0.00713 cents cheaper.
C. 1.77/3=0.59
1.79/5= 0.36
Second option is .23 cents cheaper than the first option.
is the number 749 rational?
−2/3(12c−9)+14c
I need the answer
Answer:
6c+6
Step-by-step explanation:
-24/3c+18/3+14c
-8c+6+14c
6c+6
Could it be zero? 4(x+2)=10
2. 12-8x=3(x+4)
Answer:
1) x=0.5
2 x=0
Step-by-step explanation:
Question No. 1
4(x+2)=10
4x+8=10
4x=2
x=0.5
Question No. 2
12-8x=3(x+4)
12-8x=3x+12
8x-3x=12-12
5x=0
x=0
Julie has a bag of flour that holds 20 cups of flour. She needs 4 cups for each loaf of bread.
How many loaves of bread can she make? Explain.
At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.
Find the solution of the system of equations. Explain or show your reasoning
{x+y=4.25} ; {16.90x+4y=36.35}
Answer:
The number of yards of silk = x = 1.5 yards
The number of yards of cotton = y = 2.75yards
Step-by-step explanation:
At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.
Find the solution of the system of equations. Explain or show your reasoning
{x+y=4.25} ; {16.90x+4y=36.35}
Let the number of yards of silk = x
The number of yards of cotton = y
We are given the system of equations:
{x+y=4.25} ......Equation 1
x = 4.25 - y
{16.90x+4y=36.35}....... Equation 2
4.25 - y for x in Equation 2
16.90(4.25 - y) + 4y = 36.35
71.825 - 16.90y + 4y = 36.35
71.825 - 36.35 = 16.90 - 4y
35.475 = 12.90y
y = 35.475/12.90
y = 2.75 yards.
The number of yards of cotton = y
{x+y=4.25} ......Equation 1
x = 4.25 - y
x = 4.25 - 2.75
x = 1.5 yards
The number of yards of silk = x = 1.5 yards
The yards of silk bought is 1.49 yards and the yard of cotton bought is 2.76 yards.
The two equations are known as simultaneous equation. They would be solved using elimination method.
x + y = 4.25 equation 1
16.90x + 4y = 36.25 equation 2
where:
x = yards of silk bought
y = yards of cotton bought
In order to determine the value of x, multiply equation 1 by 4.
4x + 4y = 17 equation 3
Subtract equation 3 from 2
19.25 = 12.90x
Divide both sides of the equation by 12.90
x = 1.49 yards
In order to determine the value of y, substitute for x in equation 1
1.49 + y = 4.25
y = 4.25 - 1.49
y = 2.76 yards
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How do you write 1.65x10^8: 2x10^3 in scientific notation?
I'm guessing you're talking about the ratio,
(1.65 x 10⁸) / (2 x 10³)
You can cancel the lowest power of 10:
(1.65 x 10⁸) / (2 x 10³) = (1.65 x 10⁵) / 2
Divide 1.65 in half to get 0.825. So we have
(1.65 x 10⁸) / (2 x 10³) = 0.825 x 10⁵
Move the decimal point to the right, which involves multiplying by a factor of 10 which is taken from 10⁵, so we end up with
(1.65 x 10⁸) / (2 x 10³) = 8.25 x 10⁴
Students make 82.5 ounces of liquid soap for a craft fair. They put the soap in 5.5-ounce bottles and sell each bottle for $4.50. How much do the students earn if they sell all the bottles of liquid soap?
Answer:
$63
Step-by-step explanation:
Answer:
they made 67.5$
Step-by-step explanation:
82.5÷5.5 is 15 15×4.50 would be 67.5
I need help, quick....
Answer:
A & B
Step-by-step explanation:
Solve for t when 15cos(2pi/365t)43
Answer:
|2y|+3=2+3
3cos^2(x)+2cos(x)−1=0
3x=4−x
Step-by-step explanation:
Hoped that helped if it did may I please have a brainliest :)
Answer:
152
Step-by-step explanation:
Salma must choose a number between 55 and 101 that is a multiple of 2, 8, and 16. Write all the numbers that she could
choose. If there is more than one number, separate them with commas.
Answer:
5*8=40, not big enough product
2*5*8=80, works
3*5*8=120, too bigStep-by-step explanation:
55
and
101
that is a multiple of
4
,
5
, and
8
The numbers between 51 and 101 and multiple of 2,8, and 16 are 80 and 96.
What is a number system?A numeral system is a way of writing numbers; it's a way of mathematically notating a collection of numbers by utilizing a consistent set of digits or other symbols. In several numeral systems, the same set of symbols may represent various numbers.
Given that Salma must choose a number between 55 and 101 that is a multiple of 2, 8, and 16.
To calculate the numbers between 55 and 101 and are the multiple of 2,8, and 16. Get the multiple of 16 which will be the multiple of 8 and 2.
80 and 96 is the multiple of 16 and also of 8 and 2.
80 = 8 x 10 = 80
80 = 16 x 5 = 80
80 = 40 x 2 = 80
96 = 16 x 6 = 96
96 = 48 x 2 = 96
96 = 8 x 12 = 96
Therefore, the numbers between 51 and 101 and multiples of 2,8, and 16 are 80 and 96.
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0.5 mi = 2, 640 ft
O True
False
Answer:True
Step-by-step explanation:
If you multiply the length value, you would get 2640 ft, so the answer is true.
find the measure of angle J .will mark brainiest
Answer:
<J=51°
Step-by-step explanation:
3x-2+4x-9+3x-9=180
10x-20=180
10x=200
x=20
<J=3x-9=3(20)-9=60-9=51°
Answer: Angle J = 51°
Step-by-step explanation: All angles add up to 180° in a triangle, so add every angle and set it equal to 180°.
(3x - 2) + (3x - 9) + (4x - 9) = 180
Add like terms:
10x - 20 = 180
Add 20 to both sides:
10x = 200
Divide both sides by 10:
x = 20
Now, plug x into angle J:
3(20) - 9
60 - 9
51
Angle J = 51°
Hope this helps!
Evaluate 4m+23+n/p−3, when m=7, n=2, and p=8.
Answer:
48 1/4
Step-by-step explanation:
plug in the values of m,n,p
4*7+23+2/8-3
= 28+23+1/4-3
= 28+23-3+1/4
= 28+20+1/4
= 48 1/4
The mean (average) of 4 numbers is 88.
What is the fourth number if three of the numbers are 80, 95, and 85
A 32
B. 54
с. 75
D. 99
E none of these
Answer:
E non of the above
Step-by-step explanation:
To get the original number you multiply 88 by 4
Then you add 80, 85 and 95 and then minus it from the original number
You should end up with 352 minus 260
Therefore the answer would be 92 and not a given answer so your answer is e: none of the above
Suppose you invested 2000 in a compound interest account earning 10% per month. How much would you have in your account at the end of 5 months?
Answer:
she ate my. s aa a awwosewrtfgfdswertyu
Step-by-step explanation:
wwwwojwojwowj
Answer:
$3,221.02
Step-by-step explanation:
Month 1: $2000 x 1.10 = $2,200
Month 2 = $2,200 x 1.10 = $2,420
Month 3 = $2,420 x 1.10 = $2,662
Month 4 = $2,662 x 1.10 = $2,928.2
Month 5 = $2,928.2 x 1.10 = $3,221.02
Divide. -4 1/3 divided by 2 3/5
need help plz so can u
HELP!!!!!
answer asap! this is due in two hours!!
Answer:
it is 56
Step-by-step explanation:
there are 4 sides and they are all 10 and if you add them they are 40 and if you do the bottom it is 16 and 40 + 16 is 56 hope it helps
Which ordered pairs are solutions to the equation 5x+12y = 12?
Select the correct answer below:
a. (0,1)
b. (7,-6)
c. (6,5)
d. (2,3)
e. none of the above
If you walk 100 m forward And 35 m backwards towards your starting point would what is the distance and displacement explain your answer
Answer:
imater?
Step-by-step explanation:
An alligatoris 8 inches long at birth and grous 6 inches per year. Wirite an equation that represents the lengthy needs of an alligator that is years old
How long will the alligator be aher 5 years?
Answer:
6x+8
Step-by-step explanation:
38 inches. We write an equation for how much it grows each year, plus the original 8 inches. So, 6(5)+8=38
Can someone please help, ty!!
(Will mark brainliest)
Answer:
4 hours
Step-by-step explanation:
50+5x=15x
50=20x
x=4
Please answer this math questions ASAP thanks the picture is attached !!
Answer:
The answer is C
Step-by-step explanation:
Both f(x) and g(x) have a domain of [0,infinite). and a range of [0, infinite).
If ΔABC ≅ ΔEDF where the coordinates of A(−1, 1), B(2, 4), and C(3, 1), what is the measure of EF?
3
3.2
4
4.6
Answer:
4 is the correct answer.
Step-by-step explanation:
If you're taking FLVS math then this is the right answer, I got it correct on my test.
The required measure of EF is 4. Option c is correct.
ΔABC ≅ ΔEDF
A(−1, 1), B(2, 4), and C(3, 1).
In congruent geometry, the shapes that are so identical. Can be coincide to themselves.
Here,
ΔABC ≅ ΔEDF
SO, AC = EF
EF = [tex]\sqrt{(3+1)^2+(1-1)^2 }[/tex]
EF = 4
Thus, the required measure of EF is 4.
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Evaluate : (r - 3)³ + r² if r = -3 and s = -4. Show all the steps of working for this question.
I have a math test please give me the right answer!!
Answer:
-207
Step-by-step explanation:
Using r= -3, we can substitute r in the whole equation as (-3) which gives you: ((-3)-3)^3 +(-3)^2. Now you can calculate these values in a step by step manner. (-6)^3 +9 then to -216 +9 which brings you to the answer of -207.
Answer:
225
Step-by-step explanation:
(r - 3)³ + r² if r = -3 and s = -4
(-3 - 3)^3 + (-3)^2
(-6)^3 + (9)
(-6 x -6 x -6) + 9
-216 + 9
-207
1,2,1,10,1,50,1 what is the next number
Answer:
250
Step-by-step explanation:
its 1 and then the number before it times 5. without the ones it would be 2,10,50,250
Answer:
250
Step-by-step explanation:
theres a pattern, after every 1 you multiply by 5, for example 2x5=10 10x5=50 50x5=250
If 40x = 400, then A. x equals 100. B. x equals 10. C. I equals 4. O D. x equals 1. E. requals 0 ).
Answer:
B- x= 10
Step-by-step explanation:
40x=400 -> 40 x 10= 400
The value of x in the expression 40x = 400 by combining like terms would be 10. Hence, option B is true.
Given that,
The expression is,
40x = 400
Used the concept of expression by combining like terms.
Here, the expression is,
40x = 400
Divide both sides by 40,
x = 400/40
Therefore, the solution of x is,
x = 10
So, Option B is true.
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