Answer:
x = -3
y = 8
Step-by-step explanation:
x + 2y = 13 ------------(I)
x = 13 - 2y -----------(II)
-2x - 3y = -18 ----------(III)
Substitute x = 13 - 2y in equation (III)
-2*(13 - 2y) - 3y = -18
-2*13 - 2y *(-2) -3y = -18
-26 + 4y - 3y = -18 {Combine like terms}
-26 + y = -18 {Add 26 to both sides}
y = -18 + 26
y = 8
Substitute y = 8 in equation (II)
x = 13 - 2*8
= 13 - 16
x = -3
x = -3
y = 8
What is the value of x?
x = 32
x = 36
x = 37
x = 40
Answer: 40
Step-by-step explanation:
because I just had that on my math test and got it wrong
Please help!!!
PQR=/MNR. Find X.
The sides of a triangle have lengths 3, 8, and 9. What kind of triangle is it?
acute
right
obtuse
Answer:
obtuse
Step-by-step explanation:
hope this helps dude
what are some characteristics that you can use to describe functions
Answer:
A function is a relation in which each possible input value leads to exactly one output value. We say “the output is a function of the input.” The input values make up the domain, and the output values make up the range.
Two numbers whose sum is 54 and whose difference is 4
Answer:
25 and 29
Step-by-step explanation:
One leg of an isosceles right triangle measures 5 inches. Rounded to the nearest tenth, what is the approximate length of the hypotenuse?
A: 2.5 inches
B: 5.0 inches
C: 7.1 inches
D: 9.8 inches
Select ALL of the correct ways to factor the
following expression:
-4x - 6
A. -2 (2x + 3)
B. 2 (2x + 3)
C. 2 (-2x - 3)
D. -2 (2x - 3)
E. 2 (2x - 3)
Maya and Reginald are installing hardwood flooring. Maya can install flooring in a room in 4 hours. Reginald can install flooring in a room in 3 hours. How long would it take them if they worked together?
Answer:
1 hour 42 minutes approx
Step-by-step explanation:
Given data
Mayas work rate= 1/4 room per hour
Reginald work rate= 1/3 room per hour
Let the total time taken for both of them be T
Hence their combined work rate
1/4+1/3= 1/T
3+4/12=1/T
7/12=1/T
T= 12/7
T= 1.7 hours
Hence it will take them 1 hour 42 minutes approx
The diameter of the the EPCOT Ball at Disney is 165 feet. Approximate
the volume of the EPCOT Ball. Round to the nearest foot.
Answer:
2352071 ft ^3
Step-by-step explanation:
formula for volume of a sphere is
V= 4/3 * [tex]\pi[/tex] * r ^3
V = 4/3 * [tex]\pi[/tex] * 82.5 ^3 = 2352071 ft ^3
what word does these letters make ? N I O A A R M C
Mark opens a bank account with $20. He plans to put in $5 each week.
Complete the table below to show the total amount of money Mark has in his bank account from 0 to 10 weeks.
Time
(weeks)
0
1
2
3
4
5
6
7
8
9
10
Money ($)
$20
Make sure to align the money next to the weeks
0:20
1: 25
2:30
3:35
4:40
5:45
6:50
7:65
8:70
9:75
10: 80
hope this helps
3. Write an equation for the exponential function represented in the table and graph
below. Help please
X
у
-2
1.5
-1
3
0
6
1
12
2.
24
Answer:
The exponential equation is y = -2×(1/2)^x
Answer: what he said
Step-by-step explanation:
-12 (-5/6) (-2/15) How do I solve this question I am stuck on an assignment
If a number in parenthesis is directly next to a number without, then the two numbers need multiplied.
-12(5/6)(-2/15) is an example of a double multiplication. But we'll multiply -12 and 5/6 first, then multiply the product by -2/15.
-12x5/6=14 2/5
14 2/5x-2/15=-1 23/25
---
hope it helps
sorry if it doesn't
Can you help me please? This is die soon.
In ΔPQR, the measure of ∠R=90°, the measure of ∠P=38°, and PQ = 62 feet. Find the length of RP to the nearest tenth of a foot.
Answer:
48.9 feet
Step-by-step explanation:
cos P = Adj / Hyp = X / 62
cos 38 = X / 62
X = 48.8567 = 48.9
Find the value of x please!! ASAP
Answer:
x = 10
Step-by-step explanation:
By looking at the picture, I can tell the angle of the 3x is also 30 degrees.
This means 3x = 30.
When you solve for x by dividing each side by 3, you result with the answer of x = 10.
To check you work, plug in 10 for x to recieve 30 degrees again.
Mr. Jason wants to measure his two-year old son's height. He uses a tape measure marked every half inch. What is the possible error of measurement? A. 1 in. B. 0.5 in. C. 0.1 in. D. 0.25 in.
Answer:
d
Step-by-step explanation: bc i said
The possible error of measurement is half of the smallest unit on the tape measure, which is half an inch, option B is correct.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The possible error of measurement refers to the smallest unit of measurement on the tape measure.
In this case, the tape measure is marked every half inch, so the smallest unit of measurement is 0.5 inches.
Therefore, the possible error of measurement is also 0.5 inches.
This means that any measurement taken using this tape measure may be off by up to 0.5 inches due to the limitations of the instrument used.
Hence, the possible error of measurement is half of the smallest unit on the tape measure, which is half an inch. Therefore, the answer is B. 0.5 in.
To learn more on Equation:
https://brainly.com/question/10413253
#SPJ2
Ember has $80 to spend on clothes. She wants to buy a pair of jeans that cost $35 and spend the rest on t-shirts. Each T-shirt costs $5. How many t-shirts can Ember afford to buy?
Answer:
she can buy 9 shirts
Step-by-step explanation:
80-35=45
45÷5=9
plz mark brainlyest
Someone help please!!
Please help due today!!!
In your own words, explain how natural selection can lead to a change in a population's traits over time.
Step-by-step explanation:
organisms with great adaptive ability are naturally selected to remain in the environment
Answer:
Natural selection leads to evolution because the traits of those who are able to reproduce influence future generations genetics and gradually lead to these passed on traits becoming the normal state of being, thus causing the species in question to evolve.
Step-by-step explanation:
Please help I need help
9514 1404 393
Answer:
(d) SA = 36π
Step-by-step explanation:
The surface area of a cylinder is ...
SA = 2πr(r +h)
Here, the radius is r=2 and the height is 7, so we have ...
SA = 2π(2)(2+7) = 36π . . . . matches choice D
__
Dimensions are in meters, so area is in square meters.
Help me please thank you
Solve the system.
0.2x + 0.5y = 4
-0.1x + 0.3y = -2
A)
(20,0)
B)
(-2,5)
C
(-5, 10)
D)
(50, 10)
HELP
Answer:
A
Step-by-step explanation:
when plotted this is 20,0
HELP!!!!
If the probability of a getting 4/25 out of 200 people, what about 500 people?
Answer:
123
Step-by-step explanation:
Eric runs a coffee shop and bought 5,480 cups at the beginning of the week. At the end of the
week, he had 20% of the cups left. How many cups does Eric have left? |
Answer:
1096
Step-by-step explanation:
Answer:
1096 cups i think not sure dou
Step-by-step explanation:
Mallory is on a budget and wants to determine which cereal is a better buy. A 10-ounce box of Cereal A costs $2.70 and a 13-ounce box of Cereal B costs $3.64. The store is selling each cereal in 15 ounce boxes. Which cereal is cheaper and by how much?
Answer:
Cereal A is cheaper by $0.15
Step-by-step explanation:
Cost of a 10-ounce box of Cereal A = $2.70
So,
Cost of a 1-ounce box of Cereal A = [tex]\frac{2.70}{10}=\$0.27[/tex]
Cost of a 15-ounce box of Cereal A = [tex]0.27(15)=\$4.05[/tex]
Also,
Cost of a 13-ounce box of Cereal B = $3.64
So,
Cost of a 1-ounce box of Cereal B = [tex]\frac{3.64}{13}=\$0.28[/tex]
Cost of a 15-ounce box of Cereal B = [tex]=0.28(15)=\$4.2[/tex]
Here,
Cost of a 15-ounce box of Cereal B - Cost of a 15-ounce box of Cereal A = [tex]4.2-4.05=\$0.15[/tex]
Therefore,
Cereal A is cheaper by $0.15
x - 3 + 5x = 15 what is the value of 3x + 4
Answer:
13
Step-by-step explanation:
mark brainliest
Please help meeeeeeeeeeeeeeeeeeeeeeeeeeee
The selling prices of 5 houses in one neighborhood were $114,000,
$150,000, $223,000, $198,000, and $139,000. Which conclusion is true?
A. The mean price was about 15,000 higher than the median price
B. The median price was about 15,000 higher than the mean price
C. The mean and medical prices were identical
D. The mean price was double the median price
Answer:
A. The mean price was about 15,000 higher than the median price.
Step-by-step explanation:
I really need help please