Answer:
x = 7
y = 2
Step-by-step explanation:
x² - y² = 45
(x+y) (x-y) = 45
x + y = 9 (known)
9 x (x-y) = 45
x - y = 5
y = x-5
x + (x - 5) = 9 (substitute)
2x = 14
x = 7
y = 2
Alina, Robert, and Makayla are on the student council at their high school.
They all want to go to a dinner where student council representatives from
other schools will participate. However, only one student per school can go.
How can a fair decision be made about who goes to the dinner?
Select all that apply.
I A. Roll a number cube. If the number is even, Alina wins. If the
number is 1 or 3, Robert wins. If it's any other number, Makayla
wins.
B. Write each student's name on a slip of paper and put the slips in a
bag. Randomly draw a slip of paper. The student whose name is
on the paper wins.
C. Roll a number cube. If it lands on 1 or 3, Alina wins. If it lands on 2
or 4, Robert wins. If it lands on 5 or 6, Makayla wins.
D. Flip a coin twice. If both tosses are heads, Alina wins. If both are
tails. Makavla wins. If one is heads and one is tails, Robert wins.
Answer:
B. Write each student's name on a slip of paper and put the slips in a
bag. Randomly draw a slip of paper. The student whose name is
on the paper wins.
C. Roll a number cube. If it lands on 1 or 3, Alina wins. If it lands on 2
or 4, Robert wins. If it lands on 5 or 6, Makayla wins.
Step-by-step explanation:
The ways a fair decision can be made about who goes to the dinner from the list of available options is as follows:
B. Write each student's name on a slip of paper and put the slips in a bag. Randomly draw a slip of paper. The student whose name is on the paper wins.C. Roll a number cube. If it lands on 1 or 3, Alina wins. If it lands on 2 or 4, Robert wins. If it lands on 5 or 6, Makayla wins.What is probability?Probability is simply how likely something is to happen. This is used whenever one is not sure about the outcome of an event.
Therefore the correct answers are option B and option C.
Read more about probability here:
https://brainly.com/question/24756209
Use the ruler to find 1 / 1/10 and 4 1/10
Answer:
the first answer is 10 and the second is 40
Step-by-step explanation:
there actually asking how many meters would make 1 centimeter
On the ruler 1 whole centimeter is 10 meter. (The longer line behind the number is the 10th meter )
Dividing fractions
1 ÷ 1/10
Steps
Change the whole number which is 1 into a fraction.
1/1 ÷1/10
Flip the second fraction in the equation.
1/1 ÷ 10/1
Then change the division sign to a multiplication sign. So were multiply instead.
1/1 × 10/1
Multiply the fractions and your answer should be 10/1 .
This fraction is also changed to a whole number.
10/1 = 10
please help , giving brainliest .. and a thanks !!
Answer:
B, D, E
Step-by-step explanation:
yes
please...look a the image I would appreciate it... and explain it..to
Answer:
1) 0.9 = 9/10
2) 2 x (4² - 5) = 2 x (16-5) = 2 x 11= 22
3) t/4=16 16*4=t 64=t t=64
4) 2.4p=7.56 p=7.56/2.4 p=3.15
5) 8*5=40m² 40*4=160m³ v=160m³
6) 3x=27 x=27/3 x=9
$1800 at 6.5% for 30 months
Thank you
Answer:
$351,000
Step-by-step explanation:
Your welcome
1800x6.5x30
Answer:
$351,000
Step-by-step explanation:
1800 • 6.5 = 11,700
11,700 • 30 = 351,000
Which linear equation corresponds to the line graph.
y=3x
y=x-2
y=1/3x
y=2x
(x - 1) (x - 2) (0 - 3) = 0
Answer:
1 or 2
Step-by-step explanation:
one of the parentaziz has to equal 0 because anything multiplies by 0 is 0
Answer:
(−1)(−2)(0−3)=0
(−1)(−2)(−3)=0
−3(−1)(−2)=0
−32+6+3(−2)=0
−32+6+3−6=0
−32+9−6=0
= −9+3/−6 = 1
= −9−3/−6 = 2
Step-by-step explanation:
Two students that are on the same longitudinal line are approximately 5400 miles apart. The used an inclinometer,
a little geometry, and a tangent line to determine the that mABM = 86.17º and
mBAM =92.54º. The two students form a central angle of 85.9° with the center of the
earth Given this information determine how far each student is away from the from the moon? (i just need help finding the radius!!!!)
Answer:
3963 miles
Step-by-step explanation:
Write the numbers in order from least to greatest. -8, 20/2, 2, -13, -5, 6/2
Answer:
The correct order is: -13,-8,-5,-2,6/2,20/2
Step-by-step explanation:
When in the negatives the lower number is the highest. And the fractions you can divide so 6 divided by 2 is 3, and 20 divide by 2 is 10
is y=6x+7 proportional or not proportional
Answer:
it is proportional
read each problem carefully and solve as required then answer the questions that follow.
Answer:
Step-by-step explanation:
1) Number of jeans = x
Number of blouses = y
Total items = 6
x + y = 6 -------------------(I)
y = 6 - x
Cost of 'x' jeans = 300 *x = 300x
Cost of y blouses = 100 * y = 100y
Total amount = Php. 1000
300x + 100y = 1000 ------------(II)
2) Substitute y = 6 - x in equation (II)
300x + 100(6-x) = 1000
300x + 6*100 - x *100 = 1000
300x + 600 - 100x = 1000
200x + 600=1000
200x = 1000 - 600
200x = 400
x = 400/200
x = 2
Plugin x = 2 in equation (I)
2 + y = 6
y = 6 - 2
y = 4
Number of jeans = 2
Number of blouses = 4
3) This equations have only one solution. So, they are consistent and independent
2. 1 million African American students enroll in college every year. 10% of these students decide to go to a Historically Black College or University (HBCU). Given a graduation rate of 37%, how many African American students graduate from HBCUs a year? *Umm Help*
Answer:
77,700 students graduate on (HBCU)
Step-by-step explanation:
2,100,000*.10=210,000
210,000*.37=77,700
(I am not really sure about this )
I NEED HELP IN MATH, I DONt KNOW HOW TO DO THIS
Answer:
−a³b²c² − a²b³c² + a²b²c³
Explanation:
( ((−a²)(b²))(c²)) (a + b − c)
= ( ((−²2)(b²))(c²)) (a + b + −c)
= ( ((−a²)(b²))(c²)) (a) + ( ((−a²)(b²)) (c²)) (b) +( ((−a²)(b²)) (c²))(−c)
= −a³b²c² − a²b³c² + a²b²c³
- PNW
Divide using synthetic division.
(4x^2 – 13x - 5) / (x - 2) =
Answer:
The answer is on the photo below. Sorry, brainly wouldn't let me type the fraction here for some reason.
Step-by-step explanation:
Select Proportional or Not Proportional to correctly classify each pair of ratios.
Proportional or Not Proportional
12 over 30 and 18 over 45
Step-by-step explanation:
Given that,
12 over 30 and 18 over 45
We need to tell whether the ratios are Proportional or Not Proportional.
[tex]\dfrac{12}{30}=\dfrac{2}{5}[/tex]
And
[tex]\dfrac{18}{45}=\dfrac{2}{5}[/tex]
The ratio for both fraction is same i.e. 2/5 Hence, each ratios are Proportional.
Pls help if your good at math I’ll mark brainliest and a thank you:)
A. -1/2
B. 2
c. 1 / 2
D. -2
Answer:
C. 1/2
Plzzzzz give me Brainliest!!!!!
evaluate the expression (3 • 2) to the second power
Answer:
6
Step-by-step explanation:
Answer:
36
Step-by-step explanation:
3x2 =6
Then 6 to the 2and power and its 36
A college surveys local businesses about the importance of students as customers. The college chooses 150 businesses at random from telephone listings. Of these 68 return the questionnaire as a percent what is the proportion of businesses who did not respond
Answer: The proportion of businesses who did not respond = 54.67%
Step-by-step explanation:
Given : Total businesses = 150
Businesses responded = 68
Businesses did not respond = 150- 68 = 82
The proportion of businesses who did not respond =
[tex]\dfrac{\text{Businesses did not respond}}{\text{Total businesses}}\times100[/tex]
[tex]=\dfrac{82}{150}\times100=54.67\%[/tex]
Hence, the proportion of businesses who did not respond = 54.67%
Solve for p. i = prt
Answer:
p=i/rt
Step-by-step explanation:
its p= i over rt
2nd term in expansion of (3y + x)3
Answer:
9y+3x
Step-by-step explanation:
BRAINLIEST FOR THE CORRECT ANSWER What is the slope-intercept equation for the line below?
Answer:
y=-2x-1
Step-by-step explanation:
Answer: y = -2x - 1
Step-by-step explanation:
b = -1m = - 2A. 35
B. 130
C. 70
D. 65
Answer:
the answer is A
Step-by-step explanation:
What is the value of x?
-7x + 12 = 5
Answer:
-7x=-7
x=1
...........
Answer:
1
Step-by-step explanation:
-7x + 12 = 5
-7x = 5 - 12
-7x = -7
x = 1
Write an equation for a line that is parallel to y = -3x – 5 that goes through the point (-1, 8)
Answer:
y = -3x +5
Step-by-step explanation:
Parallel means that both slopes are the same.
This gives us y = -3x + C so far.
To find the y-intercept, we need to get x to 0.
Since we know the point (-1, 8), we can plug the number in into our equation
y = -3x + C.
8 = -3(-1) + C
8 = 3 + C
8 - 3 = C
5 = C or C = 5.
Now plug in C into our unsolved equation to get y = -3x +5.
Please help, will reward brainliest.
Answer:
$9-11
Step-by-step explanation:
Pllllllzzzzzzzzz help me
Answer:
for the first one he will get $51
the second one is £2.70
Step-by-step explanation:
Malachi hikes for 2.5 miles and stops for lunch. Then he hikes for 1.5 more miles. How many miles did he hike altogether?
The number of miles did he hike altogether is 4 miles.
Given that,
Malachi hikes for 2.5 miles.And, he hikes for 1.5 more miles.Based on the above information, the calculation is as follows:
= 2.5 miles + 1.5 miles
= 4 miles
Therefore we can conclude that the number of miles did he hike altogether is 4 miles.
Learn more: brainly.com/question/3530056
Just part a I’ve done b.
Photo provided.
Answer:
x=-5Step-by-step explanation:
[tex] {2}^{x} = \frac{1}{32} [/tex]
[tex] {2}^{x} = \frac{1}{ {2}^{5} } [/tex]
[tex] {2}^{x} = {2}^{ - 5} [/tex]
[tex]x = - 5[/tex]
7 1/2 divided by 3/4 please explain
Answer:
10 please mark brainliest if satisfied
Step-by-step explanation:
When Dividing fractions, use the reciprocal of 3/4
7 1/2 times 4/3 equals
10
Answer:
10
Step-by-step explanation:
You would do something called KCF Keep, Change, and Flip.
You would keep the 7 1/2 and change the divided sign to multiplying sign and flip the 3/4 so its a 4/3 and then multiply it.
15/6 times 4/3. 15 x 4 = 60
2x3= 6
so I can be 60/6 but you would simplify and 6 goes into 60 10 times. so 10 is you answer
Solve for x..........................
Answer:
3
Step-by-step explanation:
If your talking about the x where it says 3x in, then
3x = 9
x = 3