Answer:
-7
Step-by-step explanation:
Plug in your x and y values and use the information
The value of the expression 14 - (2x - y) when x = 3 and y = 2 is 10.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, 14 - (2x - y) to obtain the value of the expression when x = 3 and y = 2 we'll imply replace the numerical values of x and y which is,
= 14 - (2(3) - 2).
= 14 - 6 + 2.
= 10
learn more about numerical expressions here :
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On an exam you get 2 points for each question answered correctly, zero points for each question left blank, and lose one point for each question answered incorrectly. What is your total score on the exam if you answer 22 questions correctly, leave 7 questions blank, and answer 5 questions incorrectly? (work please)
Answer:
39 points.
Step-by-step explanation:
Correct questions: 22*2=44
Blank questions: 7*0=0
Incorrect questions: -1*5=-5
Add all the points up and you get:
44+0-5=
44-5=
39 points
answer quick for brainliest!
Answer:
b
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
if y=5-x then ...
a would be y=5-1 = 4
b would be y=5-2 =3
c would be y=5-4 =1
d would be y=5-3 =2
a is the right answer because (1,4) 1= x and y= 4 and 5-1=4
Of all 840 sixth grade students in a math school, 700 participated in the math Olympiad. Of all 910 fifth grade students, 745 participated in it.From which grade did more students participate in the Olympiad?
Answer:Sixth grade
Step-by-step explanation:
Given
There are [tex]840[/tex] sixth grade students out of which [tex]700[/tex] Participated in math olympiad
also no of fifth grade students[tex]=910[/tex]
Fifth graders who participated in math olympiad [tex]=745[/tex]
Since [tex]745>740[/tex]
There are more fifth graders in Olympiad [Numerically]
Percentage wise
Percenteage of sixth graders who participated in Math olympiad[tex]=\dfrac{700}{840}\times 100=83.33\ \%[/tex]
Percenteage of Fifth graders who participated in Math olympiad[tex]=\dfrac{745}{910}\times 100=81.86\ \%[/tex]
So, a greater Population of Sixth graders participated in math olympiad compared to Fifth graders as [tex]83.33\ \%>81.86\ \%[/tex]
Based on the above table, what is the fastest growing listed occupation for those without a college degree?
a. Gaming and sports book writers and runners
b. Dental assistants
C. Marriage and family therapists
Manicurists and pedicurists
d.
Answer:
Step-by-step explanation:
Dental assistants
Answer:
Dental assistants
Step-by-step explanation:
Solve for x:
-0.6x > 3
A. X < -5
B X < -0.2
C X > -5
D. X > -0.2
I don’t need an explanation just the answer thank you
Answer:
A
Step-by-step explanation:
Given
- 0.6x > 3
Divide both sides by - 0.6, reversing the symbol as a result of dividing by a negative quantity, thus
x < - 5 → A
Which expression is the best estimate of Four-fifths times 22.01?
One-fifth times 20
Four-fifths times 20
4 × 20
5 × 20
Answer:
the second one four fifth times 20
Step-by-step explanation:
4/5×22.01=17.68 which is approximately equal with 4/5×20=16.
Answer:
Its four fifths times 20 i took the test.
Step-by-step explanation:
A university's freshman class has 1000 students. 600 of those students are majoring in Engineering. What percentage of the freshman class are Engineering majors?
Answer:60%
Step-by-step explanation:
If there are 1000 students in total and 600 are majoring in engineering, you divide 600 by 1000 to find the percent of students majoring in engineering. (600/1000) =.6
To turn a decimal into a percent you move the decimal over 2 places making it 60%.
Answer: 600/1000 = .6 that is the answer
or 60% when you turn the decimal to percent
Step-by-step explanation:
45 over 43 as a percent
Answer: 104.65%
Step-by-step explanation: 45/43=1.0465 so you just move the decimal to the right 2 places to make it a percent. It’s over 100% because 45 is higher than the total of 43.
while hiking you see a 100ft observation tower on top of a 1100ft hill. The angle of elevation to the top of the tower is 6. How far away is the tower?.
Answer:692.82 ft
Step-by-step explanation:
Given
Height of tower is [tex]h=100\ ft[/tex]
Tower is mounted at the top of [tex]H=1100\ ft[/tex] hill
angle of elevation [tex]\theta =60^{\circ}[/tex]
Using figure we can write
[tex]\tan \theta =\dfrac{h+H}{\text{Distance}}[/tex]
[tex]\tan 60^{\circ}=\dfrac{100+1100}{\text{Distance}}[/tex]
[tex]Distance =\frac{1200}{\tan 60^{\circ}}[/tex]
[tex]Distance=\frac{1200}{\sqrt{3}}[/tex]
[tex]Distance=692.82\ ft[/tex]
there are men and women at a meting 42 are women. 40 % are men work out the total number of people at the meeting
Answer:
There are therefore 60% women there so altogether there are 70 people at the meeting
Solve the following equation 5x+3/4 - 2x-4/3=5
Answer: X= 67/36
Step-by-step explanation:
solve similar triangles
Answer:
22.5
Step-by-step explanation:
With similar triangles you don't have to solve for any angle, as both triangles are alike, just different sizes in the case. So 20/12 = 5/3 or 1.66, and the same for 27.5/16.5, so using that, we have 37.5/1.66 which is 22.5
PLS HURRY I NEED THIS ANSWERED RIGHT NOW!!! Brittney has twice as much money as Sun. Together, they have $60. Let x represent the amount of money Sun has. What expression represents the amount of money Brittney has? What expression represents the amount of money that Brittney and Sun have together? What is the equation described in this problem?
Sun's money = x
Brittney's money = 2x
x + 2x = $60
3x = $60
3x/3 = 60/3
x = 20
So amount that Brittney has is 2x.
The amount they have together is 3x
The equation that describes the problem is 3x = $60
Answer:
Brittney has twice as much money as Sun. Together, they have $60. Let x represent the amount of money Sun has.
What expression represents the amount of money Brittney has?
✔ 2x
What expression represents the amount of money that Brittney and Sun have together?
✔ 2x + x
What is the equation described in this problem?
✔ 2x + x = 60
Step-by-step explanation:
What is a correct name for the angle shown? Line segments R S and S T combine to form an angle. Angle R Angle S Angle R T S Angle S R T
Answer:
(B)Angle S
Step-by-step explanation:
Given that line segments RS and ST combine to form an angle.
The angle formed by the two line segments occur at the common end point of the two segments which in this case is S.
Therefore the angle is formed at S.
This can be written in the following ways:
[tex]\angle RST, \angle TSR$ or simply \angle S.[/tex]
The correct option is B.
Answer:
What is a correct name for the angle shown? Option B
(A) Angle R
( B) Angle S <====== Option B Hope this helps
(C) Angle R T S
(D) Angle S R T
Step-by-step explanation:
There are ten kids in a class. When any two meet, they shake their hands.Before the class starts, how many handshakes are there?
Answer: 45 handshakes.
Step-by-step explanation:
We have 10 kids.
Let's count.
Kid 1, can meet other 9 kids, so here we have 9 handshakes.
Kid 2, he can meet other 9 kids, but he already handshaked kid 1, so here we only count 8 handshakes.
Kid 3, he can meet other 9 kids, but we already counted the handshake with kid 1 and kid 2, so from here we only count 7 handshakes.
You can see the pattern, the total number of handshakes will be:
H = 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 45
Answer:
45 handshakes
Step-by-step explanation:
plsss help me ASAP !!! you get to win brainlist
Answer:
122 employees
Step-by-step explanation:
So, first you have to find 22% OF 100 WHICH IS 22. (100x0.22= 22) Then, since they have to lay off 22% more people you add the 22% of 100 (22) to the 100. (100+22=122) This means that they have laid off 122 employees this year. I hope this helps!
Use conversions to solve the problem. Jane wants to edge her garden with stone. All sides are equal. The stone costs $6 per yard. What is the perimeter of the garden? How much will it cost to buy the edging she needs?
Answer:
Perimeter: [tex]p = 4\cdot l[/tex], Total costs: [tex]C = 24\cdot l[/tex]
Step-by-step explanation:
The garden has a square form. Let be [tex]l[/tex] the length of any of the sides, measured in yards. The perimeter of the garden, measured in yards, is:
[tex]p = 4\cdot l[/tex]
Now, perimeter has a length unit and total costs of edging the garden, measured in US dollar, is:
[tex]C = \left(6\,\frac{USD}{yard} \right)\cdot 4\cdot l[/tex]
[tex]C = 24\cdot l[/tex]
splitting the middle term 2x^2-9x+4
Which expression is the best estimate of Four-fifths times 22.01?
One-fifth times 20
Four-fifths times 20
4 × 20
5 × 20
Please awnserill give brainliest
Answer:
four fifth times 20
Step-by-step explanation:
17.60=16
OMG, I'm so confused. Help me pls!
1.) -9u( -4)(-w)
2.) -b(-12)(11)
3.) -h(-jk)
4.) (-1)(-a)(-bc)
Answer:
-36uw
132b
hjk
-abc
Step-by-step explanation:
When you multiply a negative by another negative, the negative is cancelled out. When you multiply a negative by a positive, the negative is kept.
1.) -9u(-4)(-w)
36u(-w)
-36uw
2.) -b(-12)(11)
12b(11)
132b
3.) -h(-jk)
hjk
4.) -1(-a)(-bc)
1a(-bc)
-1abc
-abc
Hope this helps! :)
You flip a coin and then roll a fair six-sided die. The coin lands heads-up and the die shows an even number.
please show work thanks!
Answer:
1/4 = 25%
Step-by-step explanation:
The probability of heads is 1/2.
The probability of an even number on a die is 3/6 = 1/2.
The probability of both is (1/2) (1/2) = 1/4, or 25%.
Answer:
make me brainlist pls pls pls pls
Step-by-step explanation:
A "fair" coin lands heads-up half of the time and "tails-up" half of the time.
For one flip, the probability of landing heads-up is 1/2.
Of those successes, we now consider the probability of the "fair" die landing with an even number on top. This probability is (number of successes) / (total number of possibilities) = 3/6, or 1/2.
So, the probability of both events happening ("and") is 1/2 of 1/2, or (1/2)*(1/2) = 1/4.
11.) What was the average heart rate after exercise for trial 3? *
A. 148 b/m
B. 146 b/m
C. 140 b/m
D. 144 b/m
#12.) Explain the general relationship between exercise and heart rates in humans. *
A. as exercise levels increase, heart rate decreases
B. as exercise levels increase, heart rate increases
C. as exercise levels increase, heart rate remains the same
#13.) All of the following are important functions of blood in the human body except: *
A. supplying oxygen to cells/tissues
B. making the body immune by circulating white blood cells
C. sending signals to the brain in response to internal/external stimuli
D. transporting wastes away from cells
#14.) Where does the exchange of food, oxygen, and wastes occur? *
A. arteries
B. capillaries
C. veins
D. lymph vessels
Base your answer to question fifteen on the diagram below and your knowledge of science. The diagram represents a human organ system. The arrows show the directions of blood flow. Letters A and B represent locations in the system.
#15.) State one reason why blood at location B contains more oxygen than blood located at location A. *
Answer:
11) D. 144 b/m
12) B. As exercise levels increase, heart rate increases
13) D. Transporting wastes away from cells
14) B. Capillaries
15) This is because during excercise you increase the skin blood flow in order to enable ¨heat dissipation¨. Then after the increase in blood flow to the muscles decides to have an increase which causes it to have a cardiac output which is in direct proportion to the increase in oxygen consumption.
Step-by-step explanation:
Determine which consecutive integers do not have a real zero of f(x) = x3 + 5x2 - x - 6 between them.
a.(-6,-5)
c. (-2, -1)
b. (-5, 4)
d. (1,2)
Answer:
A
Step-by-step explanation:
I took the test, the answer is A, not c
1.
2.
3.
Sarah earns €8 per hour working in the local shop. How much does she get paid for working 2 3 hours?
Answer:
If it says working for 23hrs then the answer is €204
Step-by-step explanation:
8×23=204
An object is launched at 9.8 meters per second from a 73.5 meter tall platform. The object’s
height s (in meters) after t seconds is given by the equation s(t) = −4. 9t2 − 9. 8t + 73. 5. When
does the object strike the ground?
a. How can you solve this using a Table of Values?
b. How can you solve this using a graph?
c. How can you solve this algebraically?
Answer:
b
Step-by-step explanation:
-6 + m = -23
I need work and answer
Will give the bainliest
Answer:
The answer for [tex]m[/tex] :
[tex]m = -17[/tex]
Step-by-step explanation:
Solve for [tex]m[/tex] :
[tex]-6 + m = -23[/tex]
Add both sides by 6:
[tex]-6 + 6 + m = -23 + 6[/tex]
[tex]m = -17[/tex]
So, the answer is [tex]x = -17[/tex]
Wendy was asked to write an equation and solve this problem. Dylan bought a box of markers. He used 14 markers and had 18 that he didn’t use. How many markers were in the box? Wendy’s work is shown below. Steps Wendy’s Work Step 1 m minus 14 = 18 Step 2 m minus 14 minus 14 = 18 minus 14 Step 3 m = 4 In which step, if any, did Wendy first make a mistake in her work? step 1 step 2 step 3 no mistake
Answer: STEP 2
Step-by-step explanation: I took the quiz i am pretty positive
plz mark me as the brainliest
Answer:
step 2 or b
Step-by-step explanation:
An angle measuring 32 degrees has a complement that measures ( 2x-16 ) degrees. What is the value
Answer:
x=37
Step-by-step explanation:
Complementary angles add up to 90 degrees.
Let's first find the measure of the complement.
90-32=58
Now we can set the numerical value of it equal to the expression it gave us.
2x-16=58
We have to isolate x.
Lets add 16 to both sides
2x=74
Divide both sides by 2.
x=37
A 48-inch board is cut into two pieces. One piece is three times the length of the other. Find the length of the shorter piece. The shorter piece is ______
inches long.
Answer:
12 inches long
Step-by-step explanation:
So you have the ratio x : 3x
4x = 48
x = 12
Plug in:
12 * 1 = 12
The length of the shorter piece is 12 inches if the 48-inch board is cut into two pieces. One piece is three times the length of the other.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have:
A 48-inch board is cut into two pieces. One piece is three times the length of the other.
Let x and y be the length.
x = 3y
x + y = 48
3y + y = 48
y = 12 inches
x = 36 inches
Thus, the length of the shorter piece is 12 inches if the 48-inch board is cut into two pieces. One piece is three times the length of the other.
Learn more about the linear equation here:
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Which of the points shown below are on the line given by the equation y = 3x? Check all that apply.
Answer:
Step-by-step explanation:
Only A and D. Draw a line through A and D and you will see that this is a proportional relationship; the line goes through the origin.