Answers
Answer:
See explanations below
Step-by-step explanation:
Example of how to find the determinant of a 2×2 matrices is as shown;
[tex]\left[\begin{array}{ccc}a&b\\c&d&\end{array}\right][/tex]
= (a*d)-(b*c)
= ad - bc
Applying this to solve the given questions
1) (3*4) - (-3*-1)
= 12 - (3)
= 9
2) (-12*5)-(-1*12)
= -60 - (-12)
= -60+12
= -48
3) (0*4)-(-1*17)
= 0-(-17)
= 0+17
= 17
4) (8*-1)-(-4*-1)
= -8-(4)
= -8-4
= -12
5) (2*-1)-(2*-1)
= -2-(-2)
= -2+2
= 0
6) 1(1) - 0(0)
= 1 - 0
= 1
Related Questions
WILL MARK BRAINLIEST ONLY HAVE 10 MINUTES AND DOUBLE POINTS
Answers
A)
0.60B=B-0.40B
0.60B+0.40B=B
B=B
what equation can be formed to determine the two numbers.
Answers
Answer:
If one is given a quadratic equation in the form x2 + bx + c = 0, the sought factorization has the form (x + q)(x + s), and one has to find two numbers q and s that add up to b and whose product is c (this is sometimes called "Vieta's rule" and is related to Vieta's formulas).
Step-by-step explanation:
Answer:
what numbers?
Step-by-step explanation:
Six and one-half ounce is
milliliters.
Answers
I’m pretty sure that’s right :)
4x.5x³.2x⁵ find the product
Answers
4 units 2 units 7 units 3 units what's the area
Answers
Answer:
15 units
Step-by-step explanation:
split the figure into two figures
one with 4x3 and the other with 1x3
then find the area for each and add the areas to get total area
4x3=12
1x3=3
12+3=15
hope this helps have a blessed day :)
Answer:
The answer has to be 168
Step-by-step explanation:
To find the Area you need to multiply all the lengths of each side together.
So 3x4x2x7=168
HOPE THIS HELPS!!!
PLEASE MARK BRAILIEST!!!
HELP PLEASEEEEEEEEEEE!!!
Answers
Answer:
The graph under the "U" graph
Step-by-step explanation:
Deanna says a common denominator for ¼ and ⅙ is 20. Do you agree? Explain why or why not
Answers
Answer:
no
Step-by-step explanation:
4 IS a factor of 20
BUT
6 IS NOT a factor of 20
a common denominator for 1/4 and 1/6 would be 12
Type the next number in this sequence:
6, 14, 32, 60, 98, 146, 204,
Answers
Answer: 272 I believe
Can someone help me with both of these? You can answer only one, however, If you answer both that is who gets brainliest. don't answer just to take my points or you will get reported.
Answers
Answer:
1. true
2. Associative
Step-by-step explanation:
the second one is associative
PLEASE HELP WILL GIVE BRAINLEST
SOLVE THE PROBLEMS WITH SUBSTITION
x=-3y+3
x-3y=-15
Answers
Answer:
x = -6
y = 3
Step-by-step explanation:
Since we are given what x equals, we will plug that in first to the second equation.
(-3y+3) - 3y = -15
Solve by combining like-terms and isolating y.
-6y + 3 = -15
-6y = -18
y = 3
Now plug in y to the first equation to solve for x.
x = -3(3) + 3
x = -9 + 3
x = -6
In trapezoid MNPQ shown below, MN || QP, m&M = 108°, m&P = 4x - 5, and
mxQ = 3x + 21. What is the number of degrees in m«N.
Answers
Answer:
Answer:
The answer is below
Step-by-step explanation:
A trapezoid is a quadrilateral (has four sides and four angles) with a pair of opposite parallel sides. The pair of opposite parallel side is known as the base. Also, the angles on the same leg of a trapezoid (adjacent angles) are supplementary (add up to 180°).
In trapezoid MNPQ:
∠M + ∠Q = 180° (angles on the same leg are supplementary)
108 + (3x + 21) = 180
3x + 129 = 180
3x = 51
x = 17
Also:
∠N + ∠P = 180° (angles on the same leg are supplementary)
∠N + (4x - 15) = 180
∠N = 180 - (4x - 15)
∠N = 180 - 4x + 15
∠N = 195 - 4x
substitute x = 17°:
∠N = 195 - 4(17)
∠N = 127°
Which is equivalent to 3/8 1/4
Answers
Answer:
Step-by-step explanation:
what is equivalent to
1/4: 2/8, 4/16, 8/32....... and etc-
3:8: 6/16, 9/24 and etc.......-
i was listening to rhinestone eyes while typing this-
ty :P
Find the total cost, to the nearest cent, for a meal at a restaurant that cost $19.74 with
an additional sales tax of 7.5%
Answers
Multiply 19.74 times 0.075 (7.5% converted to a decimal) to get 1.48 (the amount of tax) and add that to the cost of the meal (19.74)
1/10 of the counters in a bag are blue. 1/2 of the counters are red. 2/5 of the counters are yellow. Which of the ratios below shows the ratio of blue to red to yellow?
Answers
Answer:
well 1/10 are blue, 5/10 are red, and 4/10 are yellow.
1/10 blue
5/10 red
4/10 yellow
I don't really know how to answer this question but I hope me converting the ratios helps :)
Step-by-step explanation:
1/2 red
2/5 yellow
First, make it so that each if their whole (denominator, or the right side) is equal.
We already know that 2 and 5 are common factors of 10, so we get them to the number 10 by equal multiplication.
1/10 - blue
1/2(5) = 5/10 - red
2/5(2) = 4/10 - yellow
Now just take their numbers in order.
Answer: 1:5:4
Joaquin can read one comic book in 15 minutes. Write and solve an equation to determine how many comic books he can read in 75 minutes.
Answers
A student read the clock at 12:00. Then she read it again at 12:15. How many one degree turns has the minute hand made?
Answers
Answer
about 15
Step-by-step explanation:
1) Kayla is using mental math to find the given sum. Which equivalent
expression could she use?
A)
85 + 20
B) 90 - 13
C)
100 + 13
D) 105 - 2
Answers
The union representing the Bottle Blowers of America (BBA) is considering a proposal to merge with the Teamsters Union. According to BBA union bylaws, at least three-fourths of the union membership must approve any merger. A random sample of 2,000 current BBA members reveals 1,600 plan to vote for the merger proposal. What is the estimate of the population proportion
Answers
Answer:
The answer is "(0.782, 0.818)".
Step-by-step explanation:
computing the sample proportion:
[tex]p=\frac{x}{n}= \frac{1,600}{2000}=0.80 \\\\[/tex]
[tex]\text{Computing the} \ 95\% \ \ C.I \\\\[/tex]
[tex]C.I= p \pm Z_{\frac{\alpha}{2}}\sqrt{\frac{P(1-p)}{n}}[/tex]
[tex]= 0.80 \pm 1.96 \sqrt{\frac{0.80(1-0.80)}{2000}} \\\\= 0.80 \pm 1.96 \sqrt{\frac{0.80(0.20)}{2000}} \\\\= 0.80 \pm 1.96 \sqrt{\frac{0.16}{2000}} \\\\ = 0.80 \pm 1.96 \sqrt{0.00008} \\\\=0.80 \pm 0.18 \\\\= (0.782, 0.818)[/tex]
conclusion:
Since the interval calculation contains higher values than 75 percent of its union membership, the merger proposal is likely to pass.
Jesse rides his bike to school on most days. The school is 4.5 miles from his house. If it takes him 13.5 minutes to ride to school, what is his rate per mile?
Answers
what is this ???????/ 9.1 ∙ 102
Answers
Step-by-step explanation: 9.1 x 102 = 928.2.
3
Select the correct answer.
Emma starts a food blog. When the blog is launched, the number of site visits is 486. Every month, the number of site visits Increases by
one-third of the number of site visits in the previous month. At this rate, how many total site visits will there have been after 6 months?
OA. 6,734
OB.
2,731
Ос.
9,465
OD
728
Reset
Next
Answers
Answer:
6734
Step-by-step explanation:
1st month -> 486
2nd month->(1/3 x 486)+ 486
=648
3rd month->(1/3 x 648)+ 648
=864
4th month->(1/3 x 864)+ 864
=1152
5th month ->(1/3 x 1152)+ 1152
=1536
6th month ->(1/3 x 1536)+ 1536
=2048
486 + 648 + 864 + 1152 + 1536 +2048 = 6734
Joanna works in a marina. Boat servicing costs $70.00, plus $4.50 for each litre of oil. Joanna serviced a boat and made out a bill for $88.00. How many litres of oil did she use?(use equations)
Answers
The answer is 4 liters.
Which statement is true? Select all that apply?
A) 2/7 x 3/8 < 3/8 because 2/7 < 1
B) 2/7 x 3/8 > 3/8 because 2/7 > 1
C) 2/7 x 3/8 > 2/7 because 3/8 > 1
D) 2/7 x 3/8 < 2/7 because 3/8 < 1
Answers
3 +17 p + 2 - P
Simply each expression by combing like terms
Answers
=3+2+17p-p
=5+16p
hope this helps!!
of 24 maths teachers ,15 of them are left handed . what percentage of the teachers are right handed
Answers
Answer:
38%
Step-by-step explanation:
Percentage is 37.5% but you round up
:)
In how many ways can a quality-control engineer select a sample of3 transistors for testing frm a batch of 100 transistors?
Answers
Answer:
161700 ways.
Step-by-step explanation:
The order in which the transistors are chosen is not important. This means that we use the combinations formula to solve this question.
Combinations formula:
[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
In this question:
3 transistors from a set of 100. So
[tex]C_{100,3} = \frac{100!}{3!(100-3)!} = 161700[/tex]
So 161700 ways.
Which expressions are equivalent to 4/5×15: 5x3, 4x 5/15, 4x3, 3x 15/5, 4x 15/5.
Answers
Answer:
these are the equivalwnt expressions 4/5×15=4×5/15; 5×3=3×15/5
The expression equivalent to 4/5 × 15 is 4×3
What is the BODMAS rule?According to the BODMAS rule, the brackets have to be solved first followed by powers or roots (i.e. of), then Division, Multiplication, Addition, and at the end Subtraction. Solving any expression is considered correct only if the BODMAS rule or the PEMDAS rule is followed to solve it.
Given here the expression 4/5×15 thus simplifying it we get
4/5×15= 4×3
= 12
Hence, The expression equivalent to 4/5 × 15 is 4×3
Learn more about the BODMAS rule here:
https://brainly.com/question/29795897
#SPJ2
Each side of a cube is 4 inches long. What surface area of the cube
Answers
Answer:
96 in^2
Step-by-step explanation:
This is because u have to multiply the two bases and the lateral sides to get your area
Answer:
96
Step-by-step explanation:
Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces.
Area = l x w
4 x 4 = 16
16 x 6 = 96
find the diamtere of a circle if its radius is 96.5cm
Answers
[tex] \huge \blue{\tt{Answer:}} [/tex]
[tex] \sf {diameter = 2\times {radius}} = \sf{2\times{96.5}} = \sf{193~cm} [/tex]
If a man walks at the rate of 3 feet per second, how many minutes will it take him to walk 5760 feet?
Answers
Answer:
32 minutes
Step-by-step explanation:
There are 60 seconds in a minute
That means we will need to know how many feet he walks in a minute
So we would do 3 x 60 which equals 180 so he walks 180 ft per miute
Now we need to figure out how many minutes it took for him to walk 5760 ft.
So we would do 5760 ÷ 180 which equals 32
So the aswer is 32 minutes for him to walk 5760 ft.
Hope this helps