Answer: 42
Step-by-step explanation:
-14 1/9 would round to -14
-2 9/10 would round to -3
-14 x -3= 42
A thief steals an ATM card and must randomly guess the correct three-digit pin code from a 7-key keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first try? The number of possible code is__?? (Type an integer or fraction. Simplify your answer) The probability that the correct code is given in the first try is __?? (Type an integer or fraction. Simplify your answer.)
Answer:
1/343
Step-by-step explanation:
Given that:
Required pass code = 3 digit long
Digit or keypad option / length = 7
What is the probability of a correct guess on the first try? To obtain this,
Probability = required outcome / Total possible outcomes
The required outcome = correct guess; which is a single combination of the right digits = 1
Total possible outcomes = number of available combinations or the number of possible codes = (7^3) = 343
Hence,
P(right guess on first try) = required outcome / Total possible outcomes
= 1/343
How many $4.30 packets of sugar can be bought for $24.00?
Answer:
About 5 and a half
Step-by-step explanation:
Factor the expression
x^2 − 14x + 45 completely.
Answer:
(x+5) (x+9)
Step-by-step explanation:
In order to the trinomial
x
2
+
14
x
+
45
Begin by finding the factors for the first term
x
2
=
x
⋅
x
Place those factors as the first term in each parenthesis
(
x
_
)
(
x
_
)
Since both signs of the trinomial are positive you will be adding the factors and both signs will be positive.
(
x
+
_
)
(
x
+
_
)
Now determine the factors of the third term
45
=
1
⋅
45
,
3
⋅
15
,
5
⋅
9
We need the factors that will add up to the middle term
14
=
5
+
9
Place these factors as the second term in each of the parenthesis.
(
x
+
5
)
(
x
+
9
)
(x-5)(x-9) is the factored form of the expression x²-14x+45
The given expression is x²-14x+45
x is the variable in the expression
x square minus forteen times of x plus forty five
Plus and minus are operators in the expression
x²-9x-5x+45
Now let factor out the expression
x(x-9)-5(x-9)
(x-5)(x-9)
Hence, the factored form of the expression is (x-5)(x-9)
To learn more on Expressions click:
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please help, and it’s ok if you don’t understand it or get it wrong, please don’t feel guilty ^-^
Answer:
i think its 4.5
Step-by-step explanation:
The graph above shows the amount of protein
supplied by five different food products, A, B, C, D,
and E, as a percentage of their total weights. The
costs of 10 grams of products A, B, C, D, and e are
$2.00, $2.20, $2.50, $4.00, and $5.00, respectively.
Which of the five food products supplies the most
protein per dollar?
Answer:
Can you explain a faster way to do this problem rather than figuring out the grams of protein per dollar for each one? Thank you!
The graph above shows the amount of protein
supplied by five different food products, A, B, C, D,
and E, as a percentage of their total weights. The
costs of 10 grams of products A, B, C, D, and E are
$2.00, $2.20, $2.50, $4.00, and $5.00, respectively.
Which of the five food products supplies the most
protein per dollar? (question 17, Section 4, practice PSAT)
Step-by-step explanation:
Can you explain a faster way to do this problem rather than figuring out the grams of protein per dollar for each one? Thank you!
The graph above shows the amount of protein
supplied by five different food products, A, B, C, D,
and E, as a percentage of their total weights. The
costs of 10 grams of products A, B, C, D, and E are
$2.00, $2.20, $2.50, $4.00, and $5.00, respectively.
Which of the five food products supplies the most
protein per dollar? (question 17, Section 4, practice PSAT)
Jayla bought 20 candies for 10 dollars. What is the unit price dollars per candy?
Answer:
$1.00
Step-by-step explanation:
20/10=2
Answer:
$2 per candy
Step-by-step explanation:
20 \ 10 = 2
Andy wrote the equation of a line that has a slope of Step 2: y plus 2 equals StartFraction 3 Over 4 EndFraction x minus StartFraction 9 Over 4 EndFraction. and passes through the point (3, –2) in function notation.
Step 1: y – (–2) = Step 1: y minus left-parenthesis negative 2 right-parenthesis equals StartFraction 3 Over 4 left-parenthesis x minus 3 right-parenthesis. (x – 3)
Step 2: y + 2 = Step 2: y plus 2 equals StartFraction 3 Over 4 EndFraction x minus StartFraction 9 Over 4 EndFraction.x –
Step 3: y + 2 + 2 = Step 2: y plus 2 equals StartFraction 3 Over 4 EndFraction x minus StartFraction 9 Over 4 EndFraction.x – + 2
Step 4: y = Step 2: y plus 2 equals StartFraction 3 Over 4 EndFraction x minus StartFraction 9 Over 4 EndFraction.x –
Step 5: f(x) = Step 2: y plus 2 equals StartFraction 3 Over 4 EndFraction x minus StartFraction 9 Over 4 EndFraction.x –
Analyze each step to identify if Andy made an error.
Yes, he made an error in Step 1. He switched the x and y values.
Yes, he made an error in Step 2. He did not distribute StartFraction 3 Over 4 EndFraction properly.
Yes, he made an error in Step 3. He should have subtracted 2 from both sides.
No, his work is correct.
answer is C
He made an error in Step 3. He should have subtracted 2 from both sides.
Answer:
c
Step-by-step explanation:
The football team scored 128 total points last season. This year they scored 144 total points. What is the percent of change?
Answer:
88%.
Step-by-step explanation:
Answer:
12.5% increase
Step-by-step explanation:
Take the difference in points
144-128 = 16
And divide by the original number of points
16/128 =.125
Change to percent form
12.5%
Since the points went up it is an increase
12.5% increase
Estimate the sum 78.5+51.4
Answer:
129.9
Step-by-step explanation:
78.5
+ 51.4
129.9
Hope this helps! (:
Reorder the steps to construct Angle JOB, a copy of Angle A.
__ Construct oj
__ Place your compass point at the vertex of Angle A. Create an arc that intersects both rays of Angle A.
__ On Angle A, set your compass point on the intersection of the arc and ray and the pencil on the other intersection of the arc and second ray. Lock your compass.
__ Place the point of the compass on the intersection of the arc on OB. Mark an arc through the large arc created in a previous step. Label the point of intersection of the two arcs point J.
__ Draw a ray that will become one of the two rays of the new angle. Label the ray OB.
__ Without changing your compass setting, create an arc from point O that intersects OB. Be sure to make a large arc.
Answer:
The right order is given as follows;
_Draw a ray that will become one of the two rays of the new angle, label OB
_Place your compass point at the vertex of Angle A. Create an arc that intersects both rays of Angle A
_On Angle A, set the compass point on the intersection of the arc and ray and the pencil on the other intersection of the arc and second ray. Lock your compass
_Without changing your compass setting, create an arc from point O that intersects OB. Be sure to make a large arc.
_Place the point of the compass on the intersection of the arc on OB. Mark an arc arc through the large arc created in a previous step. Label the point of intersection of the two arcs point J.
_Construct OJ
Step-by-step explanation:
1) The first step is to draw a line in the location where the angle to be copied is to be constructed
2) The distance of two points on the rays forming the angle to be copied from the vertex are found by drawing an arc from the vertex and setting the compass opening width to the distances between the intersection of the arc and the rays
3) With the set compass width from the step above, an arc is drawn which intersects the constructed first new ray. The arc is made to extend to a large angle to accommodate large angle sizes
4) From the point of intersection of the arc on the new line, another arc is drawn to intersect the previous arc located on the new line construction
5) Join the point intersection of the two arcs on the new construction to the start point of the constructed first new line (the point from which the first arc was constructed to complete the construction of a copy of the angle.
-4( -3 )+ (6-2)/64 = ?
Answer:
12.0625
Step-by-step explanation:
Im not sure but im pretty sure it's correct
12.06 or 193/16 in fraction form I believe. Sorry if it’s wrong.
What is the equation of the line that passes through the point (-5,3) and has a slope of -6/5
Answer:
y=-6/5x-3
Step-by-step explanation:
Formula: y-y1=m(x-x1)
y-3=-6/5(x-(-5))
y-3=-6/5(x+5)
y-3=-6/5x-6
y=-6/5x-3
Answer:
y=-6/5x-3
Step-by-step explanation:
:)
Use the diagram below to find the measure of each angle. If you cannot see the
diagram below, it is also in your book on page 59. As you write your answer,
write the number and type the word degrees after.
A
E
B
С
50°
D
m
m
m
Finance Application. Tony earned $8.25 per hour at his after school job. Each week he earned $80. Write and solve an equation to show how many hours he worked each week.
Answer:
9.6969 hours
Step-by-step explanation:
8.25x = 80
x = 9.6969 hours
Help me plz!!!!!!!!!!!
Answer:
88%
Step-by-step explanation:
22/25 = .88 x 100= 88%
Answer:
88%
Step-by-step explanation:
First, you start with the bottom (denominator). You turn it into 100 since all percentages are over 100. So 25 times 4 is 100. Therefore, you also have to multiply the top with a 4, getting an 88 over 100. That is equal to 88%.
A recipe calls for 4 teaspoons of salt to 12 teaspoons of red pepper flakes. How many teaspoons of salt are needed for each tablespoon of red pepper flakes?
Answer:
1 teaspoon of salt to 3 teaspoons of red pepper flake
Step-by-step explanation: 12 divided by 4
Is 3.07 the same as 3.7 ?
Answer:
yes it is a 0 is not a value if its infront of an answer
Step-by-step explanation:
Compute -8+2.8+7.3 find the answer
use the calculator but the answer is 18.1
The function f(x) represents the amount of people it takes to build x engines in a car factory. What is a reasonable domain for the function f(x)?
Incorrect
00:00
The map shows the beach area on a coordinate plane.
Find the distance from the car to the cabana and then from the cabana to the beach.
Car
3-
Cabana
Beac
-5
-3
101
2
3.
5.

Answer:
I really need help on this one but I got 9 could you tell me if it’s right?
Step-by-step explanation:
what will happen to the area of a square if the length of its sides are halved
Answer:
the side is halved the area of the square will be one fourth
Step-by-step explanation:
example : 6cm
area : 6x6 = 36
now half of 6 is 3
so : 3x3 = 9
one-fourth of 36 is 9
What is a force between an object and the surface it is moving over?
Answer:
Friction
Step-by-step explanation:
What vocabulary term describes symbols that represent numbers whose quantity we don't know?
Answer:
variable
Step-by-step explanation:
I NeEd HeLp
Solve the inequality.
4(x + 3) - 7 2 X+ 3(x + 1)
O x 5
Ox>3
O no solution
O all real numbers
Answer:
x 5. jjhwgehdhdjdhdhdhejrj
A plece of wood has a volume of 30 cm. It has a length of 2 cm and a width of 3 cm. What is the height of the wood?
5 cm
60 cm
15 cm
6 cm
Answer:
HERE IS YOUR ANSWER
Step-by-step explanation:
volume = length × width × height
30 = 2 × 3 × h
30 = 6h
5=h
It is 5 cm high
Hope it helps you
Regards,
Rachana
z=b+ma, for a PLS ASAP
Answer:
a= b+m/2
Step-by-step explanation:
Which expression is equivalent to 25x2 + x
Answer:
50+x
Step-by-step explanation:
if you simplify, 25*2 is 50.
50+x
What’s the correct mathematical expression for 2 groups of z
Answer:
2z = 2 groups of z
What is the value of sec A (include steps)
Answer:
17/15
Step-by-step explanation:
Sec A = 1/ Cos A
Cos A = Adjacent / Hypotenuse
1/Cos A = Hypotenuse / Adjacent
So, Sec A = Hypotenuse/Adjacent
= AB/AC
= 17/15
Answer:
17/15
Step-by-step explanation:
Secant is the inverse of cosine.
Cosine is the adjacent side divided by the hypotenuse.
cos A = 15/17
sec A = 17/15
PLEASE HELP ME WITH THIS ILL BRAINLIST PLS HELP SOLVE AS MANY AS U CAN
Answer:
a) d + f
b) 3d + f - 7
c) d + f + 25Step-by-step explanation: