Answer:
What are you solving for?
Step-by-step explanation:
Answer:
(7.5,4.1)
Step-by-step explanation:
Given
3x_7y =_40
3x_2y=_4
sol
3x_7y=_40..... equation 1
3x_2y=_4 ..... eq 2
here
eq 2 multi 3 eq 1 multiply 3
9x_21y=_120
9x_6y=_12
_ + = +
__________
0x+ 15y =108
y=108÷15
y=7.5
the y value putting the eq 1
3x_7y=_40
3x_7×7.5=_40
3x_52.5=_40
3x=52.5_40
3x=12.5
x=12.5÷3
x=4.1
What is the distance from -7 to 5 on a number line?
2
4
-12
12
Answer:
12 units
Step-by-step explanation:
Find the absolute value of the difference , that is
d = | - 7 - 5 | = | - 12 | = 12 or
d = | 5 - (- 7) | = | 5 + 7 | = | 12 | = 12
The distance from -7 to 5 on a number line is 12 units. This distance between two integers is calculated by using a number line and the absolute value of the difference between those two integers.
What is a Number line?A number line is a graph for the real numbers.It is used to represent the integers on it at a regular interval. It is also used for finding arithmetic operations like the addition and subtraction of integers.The positive integers lie on the right side of the number line and the negative integers lie on the left side of the line The zero lies at the center of the line which separates the positive and negative integers.How to calculate the distance between two integers on a number line?For calculating the distance between two integers, count every integer in between themA faster way of finding the distance between the two integers is by taking the absolute value of their differenceIf A and B are two integers, then the distance between them is given by |B - A|Calculating the distance from -7 to 5 on the number line:
⇒ | 5 - (-7) |
⇒ | 12 |
= 12 units
Therefore, there are 12 units in between the given two integers -7 and 5 on a number line which is shown below
Learn more about the number line here:
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4x + 8 - 9x = -17 what is x\
and the x has to be the same for each
Answer:
x = 5
Step-by-step explanation:
4x + 8 - 9x = -17
combine like terms:
-5x = -25
divide both sides of the equation by -5:
x = 5
Answer:
x=5
Step-by-step explanation:
4x-9x+8=-17
-5x+8=-17
subtract 8 from both sides and you get:
-5x=25
divide 5 from both sides, and you get x=5! :)
EXTRA CREDIT: (5 POINTS)
The 6th grade is going on a field trip to the Stennis Space Center. In order to pay for the bus cost, more than 50 children must go on the field trip. There are already 27 students signed up to go. Which inequality could be used to show many more students must sign up to go.
Use the variable s to represent the students.
A.
s + 27 > 50
B.
s - 27 > 50
C.
s+ 50 < 27
D.
s + 50 > 27
PLEASE PLEASE PLEASE HELP HELP ME
Can someone help me with this ASAP please I’m being timed
Answer:
false
Step-by-step explanation:
This is because the ones that most likely have a computer are going to play and the ones that dont arent going to play.
through: (9,-5), Slope=3/4 what is the slope equation?
This is due today PLSS help!
Answer: sorry I dont know!
Step-by-step explanation:
What is the volume of the cone? Estimate using 3.14 for pi, and round to the nearest tenth
Answer:
V=πr2h3
r Radius
h Height
Right circular cone
Answer:
its going to be 21 or 20 I think I'm not sure
Mr Maretti is making welcome bags
Answer:
Step-by-step explanation:
Instructions for a craft project say that the length of a piece of red ribbon should be 7 inches less than the length of a piece of blue ribbon.
a. How long is the red ribbon if the blue ribbon is:
10 inches?
27 inches?
X inches?
Answer:
If blue ribbon is 10 inches, red ribbon is 3 inches
If blue ribbon is 27 inches, red ribbon is 20 inches
If blue ribbon is x inches, red ribbon is x - 7 inches
Step-by-step explanation:
Given that,
The length of a piece of red ribbon should be 7 inches less than the length of a piece of blue ribbon.Need to find,
How long red ribbon is if blue ribbon is 10 inchesHow long red ribbon is if blue ribbon is 27 inchesHow long red ribbon is if blue ribbon is x inches--------------------------------------------------------------------------------------------------------------
How long is the red ribbon if the blue ribbon is 10 inches?
We know that the formula for find the length of the red ribbon is:
length of blue ribbon - 7 inches = length of red ribbon
Since we know the length of the blue ribbon (10 inches), we can apply that to the formula:
10 inches - 7 inches = length of red ribbon
So, what is 10 - 7? That gives us 3. So, the length of the red ribbon is 3 inches if the length of the blue ribbon is 10.
--------------------------------------------------------------------------------------------------------------
How long is the red ribbon if the blue ribbon is 27 inches?
We do the same as we did above to get 20 inches as the final answer because 27 inches - 7 inches gives us 20 inches as a difference.
--------------------------------------------------------------------------------------------------------------
How long is the red ribbon if the blue ribbon is x inches?
Since we do not know the value of x, we keep the length of the red ribbon to x - 7.
The length of the red ribbon is 3 inches if the blue ribbon is 10 inches.
The length of the red ribbon is 20 inches if the blue ribbon is 27 inches.
The length of the red ribbon is (X - 7) inches if the blue ribbon is X inches.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Length of blue ribbon = x
Length of red ribbon.
= x - 7
Now,
If x = 10
Length of red ribbon.
= 10 - 7
= 3 inches
If x = 27
Length of red ribbon.
= 27 - 7
= 20 inches
If x = X
Length of red ribbon.
= (X - 7) inches
Thus,
The length of the red ribbon is given above.
Learn more about expressions here:
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And the second question asks
Are the systems of equations
equivalent?
Yes
No
The Jefferson Valley Bank once had a separate customer waiting line at each teller window, but it now has a single waiting line that feeds the teller windows as vacancies occur. The standard deviation of customer waiting times with the old multiple-line configuration was 1.8 min. Listed below is a simple random sample of waiting times (minutes) with the single waiting line. Use a 0.05 significance level to test the claim that with a single waiting line, the waiting times have a standard deviation less than 1.8 min. What improvement occurred when banks changed from multiple waiting lines to a single waiting line?
Answer:
There will be sufficient evidence to conclude. A further explanation is provided below.
Step-by-step explanation:
The given values are:
[tex]\sigma=1.8[/tex]
[tex]\alpha=0.05[/tex]
[tex]n=10[/tex]
As we know,
[tex]\bar{x}=\frac{\Sigma x_i}{n}[/tex]
[tex]=\frac{71.5}{10}[/tex]
[tex]=7.15[/tex]
The standard deviation will be:
⇒ [tex]s=\sqrt{\frac{1}{n-1} \Sigma(x_i- \bar{x})^2 }[/tex]
On substituting the values, we get
⇒ [tex]=\sqrt{\frac{1}{10-1} [(6.5-7.15)^2+...(7.7-7.15)^2]}[/tex]
⇒ [tex]=\sqrt{\frac{1}{9} [(6.5-7.15)^2+...(7.7-7.15)^2]}[/tex]
⇒ [tex]=0.477[/tex]
According to the question,
Hypotheses:
[tex]H_o: \sigma=1.8[/tex]
[tex]H_a: \sigma<1.8[/tex]
The test statistic will be:
⇒ [tex]X^2=\frac{(n-1)s^2}{\sigma^2}[/tex]
⇒ [tex]=\frac{(10-1)\times 0.477^2}{1.8^2}[/tex]
⇒ [tex]=\frac{2.0477}{3.24}[/tex]
⇒ [tex]=0.632[/tex]
Thus the above is the correct response.
Mrs. Smith and her two sons spent a total of $53.50 at the movie theater. Together they spent $26.75 on snacks and Mrs. Smith's ticket was $11.25. How much did each son's ticket cost?
Answer:
$7.75
Step-by-step explanation:
$26.75 + $11.25=$38
$53.50 - $38=$15.5
$15.5/2= $7.75
The height of a triangle is 2 less than 5 times its base. If the base of the triangle is x feet, and the area of the triangle is 12 square feet, which
equation models this situation?
A. 5x^2-2x-24=0
B. 5x^2-2x-12=0
C. 5x^2-2x-6=0
D. 25x^2-10x-24 = 0
Lindsey constructs a triangle with one side 3 inches long and another side 9 inches long. Which is not a possible length for the third side?
Answer:
12
Step-by-step explanation:
The sum of any two sides of a triangle must be greater than the third side.
Answer:
hi
Step-by-step explanation:
Find the lengths of AC and BC, and find the measure of angle B.
please help :)
Answer:
I know that the angle is 57
Step-by-step explanation:
Mary bought 2 large popcorn buckets and 4 small drinks for $20. Linda bought 2 large popcorn buckets and 2 small drinks for $14. What was the cost for the large popcorn and the small drink?
Answer:
the cost for the large popcorn and the small drink is $4 and $3 respectively
Step-by-step explanation:
The computation of the cost for the large popcorn and the small drink is shown below:
Let us assume the cost of the large popcorn be x
ANd, the small drink cost be y
Now as per the question
2x + 4y = $20
2x + 2y = $14
Now subtract equation 2 from equation 1
2y = $6
y = $3
Now for x it is
2x + 12 = $20
2x = $8
x = $4
Hence, the cost for the large popcorn and the small drink is $4 and $3 respectively
Roberto has $200 in spending money. He wants to buy some video games that cost $25.50 each. Write and solve an inequality to find the number of
games, g, that Roberto can buy.
Inequality (use g as your variable):
Roberto can buy up to
video games.
Answer:
$200.00/$25.50 = g
Step-by-step explanation:
200.00 / 25.50 = 7 games
1. In a karate class there are 22 students. 15 of the students are male. What is the ratio of females to the total number of students?
22:15
7:22
7:15
Answer:
239392iq5858558586867685858484939939
e
Step-by-step explanation:
abcdefghijklmnopqrstuvwxyz
ASAP THIS NEEDS TO BE DOEN IN MY LIVE CLASS CRIES
Answer:
2
Step-by-step explanation:
its hard to type
Someone please do this for me. I would really appreciate it. I’ll make you brainliest!
Answer:
44.1 degrees
Step-by-step explanation:
In this diagram we are given the hypotenuse (39) and the side adjacent to the angle x. The cosine function relates the hypotenuse and adjacent side as follows:
cos x = 28/39
Using the inverse cosine function on a calculator, we get x = 0.7699 radian, which converts to degrees if we multiply this result by 180/π:
Angle x, in degrees, is 44.1 degrees, which is to the nearest tenth.
how do you multiply add and divide fractions?
Answer:
If the denominators are not the same: First, make them the same. Then add or subtract like fractions with the same denominators.
Step-by-step explanation:
the first step when multiplying fractions is to multiply the two numerators. the second step is to multiply the two denominators. simplify the new fractions. the fractions can also be simplified before multiplying by factoring out common factors in the numerator and denominator.
to add or subtract fractions they must have the same denominator. if the denominators are already the same then it is just a matter of either adding or subtracting the numerators if the denominators are difrent then a common denominator needs to be found.
I will reward you handsomely with a reward of Brainliest and some points and a 5 star and thanks if you answer these all correctly
1. 810
2. 89%
3. 624
4. 100
5. 960
6. 165
need the answers to this with the work show and done before 11:30!!!! pls answer fast
One angle of an isosceles triangle measures 50°. Which other angles could be in that isosceles triangle? Choose all that apply
Answer:
Step-by-step explanation:
Someone pls help me out
Plzz help I'LL GIVE BRAINLIEST AND 100 POINTS
Answer:
6th graders have more participators in extracurricular activities than 4th graders.
There are more 6th graders than 4th graders that participate in extracurricular activities.
Step-by-step explanation:
your answer for the first one. 6th graders have more than 4th gradersdoing activities.
your answer for the second one. There are more 6th graders than 4th graders that participate in extracurricular activities.
Help please!?!?!?!?!?!?!?!?!
Answer:
Your answer is D.
Step-by-step explanation:
If you need explanation ask me in comment
The weight of a bucket of fish was more than 23 pounds. Doria wants to write an inequality for the weight of the bucket of fish. She uses the variable w to represent the weight. Which inequality should Doria write? w greater-than negative 23 w greater-than 23 w less-than 23 w less-than negative 23
Answer:w is greater than 23
Step-by-step explanation:
Given
The weight of the bucket was more than 23 pounds i.e.
[tex]\Rightarrow w>23[/tex]
It is w is greater than 23
Answer:
It is w is greater than 23
Step-by-step explanation:
What is the value of x?
Enter your answer in the box.
mm
Answer:
1938
Step-by-step explanation:
help me simplify this
Answer:
Da^^ good luck that looks hard
Step-by-step explanation: