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Explanation:
Let A be the tens digit and B be the units digit
We can write the number as AB. So if A = 9 and B = 2 for instance, then the number is AB = 92. Keep in mind I'm not multiplying A and B here.
"The unit digit is a prime" means B could be any of these values {2,3,5,7}. We only list the single digit primes. The value 1 is not prime.
Now multiply each of those items by 4
4*2 = 8
4*3 = 12
4*5 = 20
4*7 = 28
Of those results, only 4*2 = 8 leads to a single digit answer.
This must mean that A = 8 and B = 2
Therefore the number is AB = 82.
Algebraic Expressions
Write an algebraic expression for the following.
the sum of y and 4
Answer:
The algebraic expression of the sum of y and 4 will be: [tex]y+4[/tex]
Step-by-step explanation:
As we know that An algebraic expression in mathematics is an expression which consists of:
variables and constants, along with algebraic operations such as addition, subtraction, etc. and are made up of termsAs we have to determine the expression of the sum of y and 4.
Hence, the algebraic expression of the sum of y and 4 will be: [tex]y+4[/tex]
Answer:
y + 4
Step-by-step explanation:
Sum means it's an addition problem, so y + 4 is the answer.
hope it helps
Estimate the sum of 1 2/3+3 2/7
Answer:
4 3/10
Step-by-step explanation:
I hope this helps you out!
Answer:
the answer is 104/21 or 4 20/21
Step-by-step explanation:
Abox of 15 cookies costs $9.
What is the cost for 1 cookie?
Answer:
1 dollar
Step-by-step explanation:
Answer:
$1.66
Step-by-step explanation:
It would roughly be this but a few cents more the way i divided this was different. All you do 15/9 to get 1.66 with a non-terminating decimal.
The formula for the circumference of a circle is C = 2r, where r is the radius and C is the circumference. The equation solved for r is r = r equals StartFraction C Over 2 pi EndFraction..
Find the radius of a circle that has a circumference of 16.
Answer:
8
Step-by-step explanation:
Answer: 8
Step-by-step explanation:
A pink crayon is made with 12 mL of red wax for every 5 mL of white wax.
Which of the following wax mixtures will create the same shade of pink?
(A) 10 mL of red wax mixed wit 24 mL of white wax
(B) 48 mL of red mixed with 12 of white wax
(C) 13 mL of red mixed with 6 mL of white wax
(D) 36 mL of red mixed with 15 mL of white wax
(E) 60 mL of red mixed with 24 mL of white wax
Which is a subset of {1, 2, 4, 5, 6)?
O {0, 1, 2)
(3,4)
O {5, 6, 7)
O (2,6)
Answer:
I think answer will be
(0, 1, 2)
2.
Select the expression that correctly calculates the perimeter of the shape.
A.
40 + 2070
B.
80 + 207
120 + 2070
C.
D.
300 + 100T
Is the square root of 13 a rational or irrational number? Explain.
Answer: irrational
Step-by-step explanation:
Please please help please please help me please help please please help me
Answer: AC=108
Step-by-step explanation:
6x=9x-27
9-6=3
27/3=9
x=9
6x9=54
9(9)=81
81-27=54
54(2)=108
AC=108
Choose the equation that could be used to find 2 consecutive numbers integers whose summer is 67
PLZ HELP WITH THIS QUESTION ASAP. 20 POINTS!!! Brainliest to best answer!! Please answer with detail and show ALL steps to how you completed this problem. I attached a picture of the problem below. THANKS!!! :)
Answer: 28!
Step-by-step explanation:
so all you need to do is add all the points numbers together, that is how many km you would have to walk! so you count each amount of km to know how far you are walking to their locations in km
Hope this helped! and hope i can get brainliest!
Jordan bought 4 shirts
that each cost the same
amount and I pair of
jeans that cost $40.
The items he bought cost
a total of $180 before
tax. What was the cost of
each shirt?
Answer:35 dollars each
Step-by-step explanation: Because if you take the $40 out of 180 you get 140 then you divide 140 by 4 and you get 35. Hope this helps.
a large candy bar was 116 calories. the smaller candy bar was 28% less calories. how many calories does the smaller candy bar have?
Answer: 83.52 calories
Step-by-step explanation:
first candy bar=116 calories
second candy bar= has 28% less calories
to find out the answer we will 28/100=0.28
116x0.28=32.48 calories(less)
116-32.48=83.52 calories for the second candy bar
Craig has a 6 ft by 6 ft square garden in his backyard. He wants to transform the garden into a rectangular shape and reduce the area to 32 square feet. He will do this using his current fencing by reducing the length by x feet and adding it to the width.
how do you write 0.00525 in scientific notation
Answer:
5.25×10−3
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
a rectangle has a length of x3y4 inches and a width of xy7 inches . Which expression represents the ratio of the length of the rectangle to do width of the rectangle? (NEED HELP ASAP)
Answer:
A. x²/y³
Step-by-step explanation:
Given the following data;
Length = x³y⁴
Width = [tex] xy^{7}[/tex]
Ratio = length/width
[tex] Ratio = \frac{x^{3}y^{4}}{xy{^7}}[/tex]
Simplifying the equation by applying the law of indices (division), we have;
[tex]\frac{x^{3}}{x} = x^{3} - x^{1} = x^{3-1} = x^{2} [/tex]
[tex]\frac{y^{4}}{y^{7}} = y^{4} - y^{7} = y^{4-7} = y^{-3} [/tex]
Hence, rearranging the above values;
[tex] Ratio = \frac{x^{2}}{y^{3}}[/tex]
Therefore, the expression that represents the ratio of the length of the rectangle to the width of the rectangle is A. x²/y³.
A plane traveled 336 miles to Carson City and back. The trip there was with the wind. It took 4 hours. The trip back was into the wind. The trip back took 6 hours. What is the speed of the plane in still air? What is the speed of the wind?
Answer:
Thus, train speed = 70 mph while wind speed is. y = 14 mph
Step-by-step explanation:
Let x = speed of the plane in mph.
Let y = speed of wind in mph.
We are told that The trip there was with the wind. It took 4 hours. The trip back was into the wind. The trip back took 6 hours.
Formula for distance is;
Distance = speed × time
Thus;
(x + y)4 = 336
(x + y) = 84 - - - - (1)
Also;
(x - y)6 = 336
Divide both sides by 6
(x - y) = 56 - - - (eq 2)
Add eq 1 and 2 to give;
2x = 84 + 56
2x = 140
x = 140/2
x = 70 mph
Plug in 70 mAh for x in eq 1.
(70 - y) = 56
y = 70 - 56
y = 14 mph
Thus, train speed = 70 mAh while wind speed is. y = 14 mph
Which two points have an undefined slope? A. (-1,1) and (1,-1) B. (-2,2) and (2,2) C. (-3,-3) and (-3,3) D. (-4,-4) and (4,4)
Answer:
C
Step-by-step explanation:
Beecause the X value is staying the same, while the Y value changes.
Answer:
C
Step-by-step explanation:
A 16 ounce bag of cereal cost $2.88 what is the cost per ounce
Answer: 0.18 (18 cents) per ounce
Step-by-step explanation:
2.88/16 = 0.18
Ahah please help me im begging you!!Please
ANSWER CHOICE:Y=-2x+6. Y=2x+6. Y=-2x. Y=2x (They are hypotenuses triangles)
Answer:
y=2x+6
Step-by-step explanation:
When x=0,y=6 so not CD
when y=0,x=-3 so not A
8.1(x – 4) = -11.1 + x
Answer:
x=3
Step-by-step explanation:
The manager of hockey team says that the probability that team win the next match is 0.5 and the probability it will lose is 0.2. Find the probability that the team will: a ) not win b) not lose c) not draw
Answer:
Step-by-step explanation:
The team draws with a probability of 1 = (0.5 + 0.2) = 0.3
If the team does not win then it loses or draws.
Loosing = 0.2
Draw := 0.3
P(not win) = 0.2 + 0.3 = 0.5
======================
Not lose means wins or draws.
P(not lose) = 0.5 + 0.3 = 0.8
======================
Not Draw means wins or loses
P(not draw) = 0.5 + 0.2 = 0.7
Of course all of these could be done more directly.
P(not win)= (1 - win) = 1- 0.5 = 0.5
P(not lose) = ( 1 - lose) = 1 - 0.2 = 0.8
P(not draw) = (1 - 0.3) = 0.7
Colin and Brian were playing darts. Colin scored 148. Brian scored 61 more than Colin. What was their combined score?
PLS PLS HELP ME ASAP
Answer:
357
Step-by-step explanation:
First you would add 61 to 148 for Brian's sore then you would add Brian's score to Colin's score to get 357. Hope this helps! Have a great day!
Lines AB and CD are straight lines. Find x and y. Give reasons to justify your solutions.
Answer:
Step-by-step explanation:
3x + y + 72 = 180
3x + y = 108 .... (1)
2x + y = 90 ..... (2)
(1) - (2)
x = 18°
y = 54°
Answer:
Step-by-step explanation:
The ratio 5:15 simplifies to
Answer:
5:15 simplifies to 1:3.
Step-by-step explanation:
Answer:
1:3
Step-by-step explanation:
-2.4x + 7.12x = -14.16
Answer:
-2.4x + 7.12x = -14.16
4.72x = -14.16
x = -3
Step-by-step explanation:
hope this helps :)
enter your answer as a number like this:42
25z+85=90 whats the answer ?
Answer:
z = 1/5
Step-by-step explanation:
5 divided by 25 is 20 percent and in fractions its 1/5
2x - 12 for x = 18
evaluate each expression for the given value of x.
Answer:
x=10
Step-by-step explanation:
2x-12 = 18
+12 +12
2x=20
20/2 = 10
Answer:
24
Step-by-step explanation:
Original equation:
2x - 12 = ?
We know x = 18
So, just plug the value into the equation
2(18) - 12
Multiply 2 by 18
36
Subtract 12 from 36
The answer is 24
Hope this helped :)
It takes 2 workers 10 minutes to plant 3 trees. If all workers plant trees at the same constant rate, how many minutes will it take 4 workers to plant 24 trees?
40
if it takes two workers 10 minutes to plant 3 trees,then it will take 4 workers 5 minutes to plant 3 trees.3÷24=8,then 5×8=40
If it takes 2 workers 10 minutes to plant 3 trees then it will take 4 workers 40 minutes to plant 24 trees.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The rate at which each worker plants trees.
If two workers can plant 3 trees in 10 minutes, then one worker can plant 3/2 trees in 10 minutes
One worker can plant 1.5 trees in 10 minutes, or 0.15 trees per minute.
Now, we can use this rate to find how long it will take 4 workers to plant 24 trees.
Since each worker plants at a rate of 0.15 trees per minute
Four workers will plant at a combined rate of 0.15 x 4 = 0.6 trees per minute.
To plant 24 trees at a rate of 0.6 trees per minute, we can use the formula:
time = (amount of work) / (rate of work)
Plugging in the values, we get:
time = 24 / 0.6 = 40
Therefore, it will take 4 workers 40 minutes to plant 24 trees.
To learn more on Equation:
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