Please help me with this maths question

Please Help Me With This Maths Question

Answers

Answer 1
3a + 3b / 2

3(5) + 3(-7) / 2

15 - 21 / 2

-6 / 2

-3
Answer 2

Answer:

-3

Step-by-step explanation:

3*5 + 3*-7/2

-6/2

=-3


Related Questions

The distance between the elementary school and the middle school is 4 miles. On the map, the two locations are One-half inch apart. What is the scale of the map?
1 inch = 8 miles
1 inch = StartFraction 1 over 8 EndFraction mile
One-half inch = 1 mile
4 inches = 1 mile

Answers

1 inch = 8 miles

1/2in + 1/2in = 1in

4 + 4 = 8

1 Inch = 8 miles

I know this because half of 8 is 4 and that is the distance between the locations

Write the coordinates of the vertices after a rotation 180° counterclockwise around the origin.

Write the coordinates of the vertices after a rotation 180 counterclockwise around the origin.

Answers

Answer: swap u and v I don't think w will change

Step-by-step explanation:

-

Well if it’s going 180 degrees, then it’s gonna be in Q1. Therefore the numbers would be in the positive, positive section. So U -8 = U’ +8, V = V’ +6 and W = W’ +6. That goes to show that 180 degrees will have the same coordinates.

A recent conference had 650 people in attendance. In one exhibit room of 70 people, there were 18 teachers and 52 principals. What prediction can you make about the number of principals in attendance at the conference?

There were about 167 principals in attendance.
There were about 316 principals in attendance.
There were about 483 principals in attendance.
There were about 1,878 principals in attendance.

Answers

So first you divide 650 by 70 so that you know how many rooms there are. The answer is about 9. Then you multiply 9 by the number of principals, so that you know how many principals there are in total. 52x9= about 483. This means the answer is that there were about 483 principals.

There were about 483 principals in attendance.

The correct option is (3).

What is Arithmetic?

The mathematical branch known as arithmetic deals with the study and application of numbers, their relationships, and mathematical observations.

As per the given data:

The total number of people in the recent conference = 650

The total number of people in one exhibit room = 70

Number of teachers in one exhibit room = 18

Number of principals in one exhibit room = 52

To find out the total number of exhibit rooms:

= Total number of people in the conference / total people in one room

= 650 / 70

= 9.28 = 9 {rounding off to the nearest integer}

Number of principals in one exhibit room = 52

Total number of principals in the conference:

= Number of rooms × Principals in one room

= 9 × 52 = 468 which is equal to 483 {approximate answer}

There were about 483 principals in attendance.

Hence, There were about 483 principals in attendance.

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Dr. McGee saw 1,007 patients this year, which is 90% higher than the number he saw
last year. How many patients did Dr. McGee see last year?


Please help! Will put Brainiest!

Answers

Answer:

107 patients

Step-by-step explanation:

This year Dr. McGee had 1007 patients act like this is 100%. 10% of 1007 is 107 and since there was a 90% increase 107 is the answer

whats the difference between mars' highest mountain and its deepest ocean canyon?

Answers

Answer:

Hope dis helps :)

whats the difference between mars' highest mountain and its deepest ocean canyon?
ocean is actually bigger than the moutains

What is the image of the point (24, 6), when rotated through 90 degrees clockwise? *
(-24, -6)
(24, 6)
(6, -24)
(-24, 6)

Answers

Answer:

6,-24 is our NEW IMAGE.

Step-by-step explanation:

OUR PRE-IMAGE is currently in QUADRANT 1

moving 90 degrees clockwise moves it into the QUADRANT 4.

In a 90 DEGREE rotation, we have to SWITCH THE x, and Y.

6,24 is our new values after switching the x and y.

Now we can use the quadrant rules,

+x,-y

6,-24

Answer is : (6,-24)

What are the like terms in 3r + 2u + 7 + 5 + 4u + r

Answers

(3r+r)+(2u+4u)+(7+5)
4r + 6u + 12

What type of function is this?

What type of function is this?

Answers

Quadratic function because it’s a u shape
Quadratic function because of the U shape that took form on the graph

The average high temperatures in degrees for a city are listed.

58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57

If a value of 80.4° is added to the data, how does the range change?

The range decreases to 46°.
The range stays 48°.
The range stays 49°.
The range increases to 50°.

Answers

Answer:

The Range Stays 48°.

Step-by-step explanation:\

Since the value 80.4° is not the highest and not the lowest value on the list, it does not change the range.

Hope this helps!

Answer:  B.  The range stays 48

Step-by-step explanation:

The largest answer is 105 and the smallest answer is 57.  The range is the range of numbers from smallest to largest so to find the range you subtract the largest and the smallest

Range = 105 - 57

Range = 48

The range will not change because if you put 80.4 in there, it's not the largest or smallest so it does not affect the range.

So answer is B. The range stays 48

Let x = any negative rational number. Choose all statements that are true.
A. x is a positive number.
B. x is the opposite of x.
C. x is equal to x.
D. x is greater than x.
E. x is greater than the distance from 0 to x on the number line.

Answers

Answer:b c

Step-by-step explanation:

the answer is c! hope this helps

Solve this system of linear equations. Separate
the x- and y-values with a comma.
5x + 2y = 13
-9x + 7y = 19

Answers

Answer:

A) 5x + 2y = 13

B) -9x + 7y = 19 We'll multiply equation A) by -(7/2)

A) -35/2 x -7y = -(91/2) then we'll add equation B)

B) -9x + 7y = 19

-53/2x = -53/2

x = 1

2y = 13 -5

y = 4

Step-by-step explanation:

Sofia needs 8 inches of ribbon to make 1 party favor. Which of the following lengths would be enough ribbon for Sofia to make from 15 to 20 party favors? 1 inch 5 2.54 centimeters, 1 centimeter < 0.39 inch
A 61 centimeters
B 390 centimeters
C 405 centimeters
D 411 centimeters
E 490 centimeters

Answers

First, we need to determine how much ribbon Sofia needs for each party favor. Since she needs 8 inches of ribbon for one party favor, we can convert that to centimeters (since the answer choices are given in centimeters):

8 inches x 2.54 cm/inch = 20.32 cm

So Sofia needs 20.32 cm of ribbon for each party favor.

To find out how much ribbon she needs for 15 to 20 party favors, we can multiply the amount needed for one party favor (20.32 cm) by the number of party favors:

15 party favors x 20.32 cm/party favor = 304.8 cm
20 party favors x 20.32 cm/party favor = 406.4 cm

The closest answer choice to this range is C, 405 centimeters. Therefore, C is the correct answer.

Answer:

D: 411 centimeters

Step-by-step explanation:

Multiply 8 by 15 you'll get 120 inches from thisMultiply that by 2.54 to find how many centimeters it is. It would be 304.8 centimeters.Then repeat steps 1-2 but replace 15 inches with 20 inches. When you multiply it by 8 it becomes 160 and it becomes 406.4 centimeters when it's multiplied by 2.54 which is why the correct answer is D

A prepaid cell phone charges a preset number of minutes to use text messaging. The graph represents y, the number of minutes used for x, the number of text messages sent and received. Is there a direct variation? Which equation represents the relationship?

-Yes, y = 2x.
-Yes, y = 20x.
-No, y = x + 10.
-No, y = x + 20.

A prepaid cell phone charges a preset number of minutes to use text messaging. The graph represents y,

Answers

Answer:

yes

Step-by-step explanation:

Answer:

Yes y=20x

Step-by-step explanation:

Because each time the number on the y axis goes up 20.

Determine if the lines are parallel, perpendicular or neither.

17) -2x + y = -4 and -19 - y = 1/2x

Answers

this is perpendicular
They are perpendicular no doubt

The ratio of boys to girls in the schools' math team is five to six. Which combination of boys to girls could the team have?



ten boys to twelve girls


thirty boys to twenty five girls


twenty five boys to thirty girls


eighteen boys to fifteen girls


twelve boys to ten girls


fifteen boys to eighteen girls

Answers

Answer:10 boys to 12 girls or 15 boys to 18 girls

Answer:

It is ten boys to twelve girls

Step-by-step explanation:

Take the number of boys to the number of girls. There is only two teams so multiply both teams by two and you'll get your answer. ( hope this made since)

Write an equation to answer the question. Show work/solution. NOTE: The variable should not be isolated on your first line of the equation.

The high temperature was 87°Fahrenheit. This was 29ºFahrenheit higher than last year's temperature. What was last year's temperature?

Answers

Answer:

87 - 29 = 58

Step-by-step explanation:

You want to buy some beans. 7​-ounce package costs ​$2.66. A 15​-ounce package costs ​$5.85. A 20​-ounce package costs ​$7.20. Which package is the best​ buy?

Answers

Ignore this comment sorry
ANSWER: 20-ounce package for $7.20

EXPLANATION: Divide each cost by its corresponding ounce to find the cost per ounce for each package. Whichever is lowest is the best deal

2.66/7 = .38
5.85/18 = .39
7.20/20 = .36

−0.8x−8.3=12.7

Enter your answer as a decimal or as a mixed number in simplest form in the box.

x = ??

Answers

-0.8x-8.3=12.6

+8.3 +8.3
-0.8x=21
Divide by -0.8x on both sides

X=-26.25

evaluate 8 - 4.7 y - x ,when y = -1 and x = 2.

evaluate 8 - 4.7 y - x ,when y = -1 and x = 2.

Answers

Answer:

10.7 = 0

Step-by-step explanation:

8 - 4.7*y - x

8 - 4.7*y - x = 0

8 - 4.7*(-1) - 2 = 0

8 + 4.7 - 2 = 0

10.7 = 0

The answer is D (10.7)

8-4.7y-x write the original equation

8-4.7(-1)-2 plug in the numbers

10.7 use a calculator to find the answer

can u guys give me the answer?

can u guys give me the answer?

Answers

Answer:

B

Step-by-step explanation:

blue: 30+46+28=108

green 26+40+30=96

The answer to this problem would be B

Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?

Answers

To determine whether Keira's statement is correct, we need to analyze the information provided.

According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.

If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.

However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.

Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
in order to know if Keira has two tickets left, we need to know the first number of tickets without that number there is no way to find the remainder

The sum of three times a number and three less than the number is thirteen.
(As an equation)

Answers

Answer:

3+5x5-3=13

Step-by-step explanation:

What is the solution to the equation 1/4x - 1/8 = 7/8 + 1/2x?

Answers

Answer:

x = -4

Step-by-step explanation:

I simplified both sides, then, isolated the variable

1) A container with 2 5⁄6gallons of weed killer can spray 3 5⁄6lawns.How many gallons would it take to spray 3 lawns?

2)It takes 3 2⁄6spoons of chocolate syrup to make 2 3⁄5gallons ofchocolate milk. How many spoons of syrup would it take to make 4gallons of chocolate milk?

Answers

Answer:

51/23 or 2  5/23

Step-by-step explanation:

2 5/6= 17/6                                  

3 5/6= 23/6

17/6÷23/6

17/6×6/23=

17/23=1 lawn

17/23×3=51/23

A container with  gallons of weed killer can spray =  lawans

∵ in  lawn the week killer can spray =  gallons

∴ in 1 lawn the weed killer is  used =  ×  gallon

∴ in 3 lawns the weed killer can spray =  ×  × 3 =  gallon =  gallons

Answer:

1. 2 5/23 gallons

2. 5 5/39 spoons of syrup

Step-by-step explanation:

1. A container with 17/6 gallons of weed killer can spray 23/6 lawns. We need to figure out how much weed killer it would take to spray 3 lawns. Divide 17/6 by 23/6.

17/6 / 23/6

17/6 * 6/23

The two 6's cancel out.

17/23 * 3/1

51/23

It would take 2 5/23 gallons to spray 3 lawns.

2. It takes 20/6 spoons of chocolate syrup to make 13/5 gallons of chocolate mink. We need to know how many spoons of syrup it would take to make 4 gallons of chocolate milk.

20/6 / 13/5

20/6 * 5/13

10/3 * 5/13

50/39

(50 * 4)/39

200/39

It would take 5 5/39 spoons of syrup to make 4 gallons of chocolate milk.

Petra is making a batch of extra large donuts by stamping circles in dough using a pastry stamp with a diameter of 5 inches. For the donut hole, she stamps out a circle using a pastry stamp that has a diameter of 2 inches.

How many square inches of dough are left in the donut after the hole has been removed?

Step 1 - Find the radius of each circle

Step 2 - Find the area of the large circle

Step 3 - Find the area of the small circle

Step 4 - Area of large circle minus area of small circle

Area = \(\pi\)²


Describe how you solved this problem using complete sentences and include all relevant formulas and calculations. Use 3.14 for \(\pi\)

Petra is making a batch of extra large donuts by stamping circles in dough using a pastry stamp with

Answers

Answer:

16.49

Step-by-step explanation:

First we are going to find the area of the larger circle. You don't need to find the radius, you can just use the diameter(the radius is 2.5). 3.14 times 2.5 squared=19.63. Next, the radius of the smaller circle is 1. So, 3.14 ^1 squared=3.14 19.63 - 3.14= 16.49

HELP PLEASE I REALLY NEED HELP

HELP PLEASE I REALLY NEED HELP

Answers

-3.121875

First step is take it out of fractions and into decimals, they are easier to work with.

(0.5x1.125)x(2.66x3.33)x7.5

Then PEMDAS

Parentheses
0.625x-0.66x7.5

Then multiply

-0.41625x7.5

Answer
-3.121875
Hi how has your day been

The area of a rectangle can be represented by x^2−8x+12 . If the width is x − 6, what would be the length?

Answers

ANSWER: Let length be L = x+6 and width be W.
Given:
(x+6)W = x2 +8x +12
W = (x2 +8x +12)/(x+6)
W= (x+6)(x+2)/x+6)
W= x+2
Short Answer: x+2 because W is the width

Kylie has 27 gumballs. Jared has g fewer gumballs than Kylie. Choose the expression that shows how many gumballs Jared has.
Help me correct my answer is the answer

27-g or g-27, HELP ME HELP A FRIEND I have my answers But I wanna make sure there correct

Answers

Answer:

27-g

Step-by-step explanation:

Amount of gumballs Jared has  = 27 - g

Jared has few gumballs therefore the variable comes after 27 and not before it.

HELP ASAP BRAINLIEST AND THX! I NEED U!

HELP ASAP BRAINLIEST AND THX! I NEED U!

Answers

Answer:

y=(x+12) 2 - 162 =a

Step-by-step explanatio

please write a function for the points (1/3,0) (-2 3/4,0) and (0,-5) and explain the steps.
thank you!

Answers

The function for the points are  y = -15x - 5

How to determine the function

From the information given, we have that;

The points are;

(1/3,0) (-2 3/4,0) and (0,-5)

Using the point-slope form of a linear equation, we have;

y - y₁ = m(x - x₁)

Such that;

m is the slope of the liney - y₁ and (x - x₁) are the points

Using (1/3, 0) and (0, -5), we have that the slope is;

m = (0 - (-5))/0 -1/3)

expand the bracket

= 5 / (-1/3)

= -15

Now, take any of the given points and substitute the values

Using (1/3, 0), we get;

y - 0 = -15(x - 1/3).

y = -15x - 5.

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The function for the points solved by  (1/3,0) (-2 3/4,0) and (0,-5) solved by point slope form is \(a=-15b-5\)

We have given the points:

(1/3,0) (-2 3/4,0) and (0,-5)

Using the formula of linear equation

\(a-\)\(a_{1}\)\(=x[b-b_{1}]\)                                                          

Where we will consider (1/3,0) = \(a-a_{1}\) and (0,-5) = \(b-b_{1}\)

that is 1/3 = \(a\), 0 = \(a_{1}\) and

0 = \(b\), -5 = \(b_{1}\)

\(x\) refers to the slope of line (take any variable)

Now for finding the value of \(x\),

\(x=a-a_{1}/b-b_{1}\)

inserting the values,

\(x=[0-[-5]]/[0-1/3]\\x= -15\)

Substitute the value of \(x\) in the equation

\(a-0=-15[b-1/3]\)

By simplifying the equation, we get

\(a=-15b-5\)

To know more about functions and points:

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