Please help! This is algebra work and it’s due tmr TT
(Please explain how you did the problem)
subject: solve the system of linear equations by graphing
x + y = 5
y - 2x = -4
Graph:
Answers
Answer:
The solution is (3,2).
Step-by-step explanation:
When you are solving simultaneous equation using graphs, you have to look at their intersection point.
In this graph, both equations intersect at (3,2) so the solution will be (3,2).
Test,
x + y = 5
3 + 2 = 5
y - 2x = -4
2 - 2(3) = 4
2 - 6 = 4
Related Questions
HELP PLEASE The 20% tip on a $8 sandwich
Answers
Answer:
$1.60
Step-by-step explanation:
So, to find the persent of a number, we need to make the percent a decimal.
So, 20% is equal to 0.2
Then, we need to multiply 0.2*8
8.0
* 0.2
________
1.6
So, our answer is 1 dollar and 60 cents!
Answer:
$1.60 (shorter answer)
what is the complement of rolling a 3 on a die
Answers
Answer:
Part of a train timetable is shown.
Aberystwyth
Shrewsbury
Birmingham
08 30
10 17
12 30
14 19
13 55
16 05
17 20
a)
Bob catches the 12 30 train from Aberystwyth. He arrives in Shrewsbury 8 minutes late. What time does he arrive in Shrewsbury?
b) How long is Bob's journey from Aberystwyth to Shrewsbury? Give your answer in minutes.
minutes
11 30
15 30
Judy catches the 12 30 train from Aberystwyth.
She arrives in Shrewsbury on time.
She attends a job interview.
She gets back to Shrewsbury station 1 hour and 50 minutes later. Is she back in time to catch the 16 05 train to Birmingham?
You must show your working.
If the equation of a line is 4x + 4y = 1 and equation of a second line is x + y = -8 which of the following is true
Answers
Answer:
Step-by-step explanation:
Two lines are perpendicular. The equation of the first line is y = 4x + 1. Which of the following cannot be the equation of the second line? A. y = -1/4x -2 B. x - 4y = -2 C. x + 4y = 2 D. 8y = -2x - 5
please please please help PLEASEEEE!!!! 121OKCJE
A runner can run 3/5 of a mile in 4 minutes. If he runs at the same rate, how far will he run in an hour?
Answers
Answer:
9 miles
Step-by-step explanation:
Builder’s Warehouse has a clearance on overstocked merchandise. A picnic table that usually sells for $167 is on sale for $149. What is the markdown?
Answers
167-149= The answer is 18
Pi rational see pdf document attached
Answers
Answer:
[tex]\pi \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]
HELP The perimeter of a rectangle is 150 inches the lengh is 3 inches longer than 5times the width find the length
Answers
12 inches
if the length = x,
P = 150 inches
=2 { ( 5x + 3 ) + x }
=10x + 6 + 2x
=12x + 6
Therefore 12x + 6 = 150
12x = 150 - 6
12x = 144
x = 12
What percent of 9 is 1
Whole number,fraction,or mixed number
Answers
9514 1404 393
Answer:
11 1/9%
Step-by-step explanation:
1/9 × 100% = (100/9)% = (11 1/9)%
Mrs. Smith has a total of 25 kids in her class. There are 3 more boys than there are girls. Write a system of equations to model this. Use b to represents the boys and g to represent the girls.
Answers
Answer:
b + g = 25
b = g + 3
Step-by-step explanation:
Let b = number of boys.
Let g = number of girls.
"Mrs. Smith has a total of 25 kids in her class."
b + g = 25
"There are 3 more boys than there are girls."
b = g + 3
The system of equations is:
b + g = 25
b = g + 3
Locate and classify all the critical points of the function. (If an answer does not exist, enter DNE.)
f(x, y) = 2x² + 3y² + 4
Answers
Answer:
Step-by-step explanation:
f(x,y)=2x2+3y2−4x−1 ⇒ ∇f =⟨4x−4,6y⟩=⟨0,0⟩ ⇒ x=1, y = 0. Thus (1,0) is the only critical point of f, and it lies in the region x2+y2<16.Ontheboundary,g(x,y)=x2+y2=16 ⇒ λ∇g=⟨2λx,2λy⟩,so6y=2λy ⇒ eithery=0orλ=3. Ify=0,then x=±4;ifλ=3,then4x−4=2λx ⇒ x=−2andy=±2√3. Now f(1,0) = −3, f(4,0) = 15, f(−4,0) = 47, and f−2,±2√3 = 51. Thus the maximum value of f(x,y) on the disk x2+y2 ≤ 16 is f−2,±2√3 = 51, and the minimum value is f (1, 0) = −3.
Pythagorean’s theorem
Answers
Step-by-step explanation:
Given
Hypotenuse (h) = 7
base (b) = 4
perpendicular (p) =?
Using Pythagoras theorem we get,
p = √h² - b²
= √7² - 4²
= √33
= 5.74
Hope it will help :)❤
p = a
a = 5.74 or u can write
a = √33
Answer:
5.74
Step-by-step explanation:
a=?
b=4
c=7
a^2=c^2-b^2
=7^2-4^2
=49-16
=33
a=√33
a=5.74
HELP ASAP-The girls’ soccer team won 80% of its games this season. They won 12 games. -The boys’ soccer team won 70% of its games this season. They won 14 games. How many games did each soccer team play this season?
Answers
Answer:
12 and 14
Step-by-step explanation:
15 - 20% = 12
20 - 30% = 14
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4. Brett is fencing in a circular patio. The radius of the patio is 70 feet. How many linear feet of
fencing does he need to enclose the patio?
Answers
Answer:
The number of feet of fencing that he needs will be equal to the perimeter of the circular patio.
We know that the perimeter of a circle of radius R is equal to:
P = 2*pi*R
where pi = 3.14
Then if the radius of the patio is 70ft, the perimeter of the patio will be:
P = 2*3.14*70ft = 439.6 ft
Then he needs 439.6 ft of fencing to enclose the patio.
A shirt is originally priced at $24.50 a shirt goes on sale for 30% off the original price how much money to the nearest cent does the shirt cost including 7% tax on the sale price
Answers
Answer:
7.86 is the answer
Step-by-step explanation:
30% of 24.50 is 7.35.
7.35+ 7% is 7.86
7.86 to the nearest cent is 7.86
I will mark you brainliest
Answers
Answer:
[tex](15s)^6[/tex] is the same as [tex]15^6[/tex] × [tex]s^6[/tex]
The above statement can be proven by a rule related to exponents that states: [tex](ab)^c = a^c[/tex] × [tex]b^c[/tex][tex]3s^4[/tex] × [tex]5s^2[/tex] = [tex]15s^6[/tex]
(Work for the equation above ---> You would multiply the 3 and 5 together (3 x 5 = 15) and then multiply the s terms together [tex]s^4[/tex] x [tex]s^2[/tex] , and this can be done using the exponent rule --> [tex]a^b[/tex] x [tex]a^c[/tex] = [tex]a^{b+c}[/tex]. This means that [tex]s^4[/tex] x [tex]s^2 = s^{4+2} = s^6[/tex]) This results in [tex]15s^6[/tex][tex]15s^6 \neq 15^6[/tex] x [tex]s^6[/tex]
Hope this helps in any way!! :D
6 in
4 in
4 in.
What is the surface area of the right square pyramid?
Answers
Answer:
48in
Step-by-step explanation:
6 x 4 x 4
96
divide it by 2
48
Answer:
48
Step-by-step explanation:
grhgbfjsbrvgjxbwifbcozbwicovbsnw
Mrs. Smith bought 4 dozen doughnuts and paid a total of $13.92. What was the cost of 1 doughout
. A. $0.29
B. $3.48
C. $0.35
D. $1.16
Answers
Answer:
A $0.29
Step-by-step explanation:
4 dozen donuts is 48 donuts. (A dozen is 12 so 4 times 12 is 48). $13.92 divided by 48 is $0.29.
20 POINTS AND BRAINLIEST FOR CORRECT!!!!
3 1/3 OF 10
Answers
Answer:
33.333333333
Step-by-step explanation:
simply turn 3 1/3 into an improper fraction by multiplying the denominator by the coefficient and adding the numerator to get 10/3, which simplifies to 3.3333 and multiply it by 10 and you get 33.3333.
12. Quadrilateral ABCD is located at A(-4,-2), B(0, -2), C(1, 2), and D(-3,2). What is
the most specific classification of ABCD?
PLEASE HELP ???
Answers
Answer:parallelogram
Step-by-step explanation:
reference angle for 39π/31
Answers
Answer:
i hoped i helped if i didnt sry
Step-by-step explanation:
Find two ratios equivalent to the ratio in Exercise 1.
Answers
Answer:
12:26, 24:52 :D
A cow can be milked in 5 minutes, but it must be milked twice a day. If 6 cows can be milked at a time, how many cows can be milked in 10 minutes?
Answers
answer: 12
explanation:
you can milk 6 in five minutes so you multiple 6 by to because 10 is 5 two times
When is it appropriate to use the paired t test (involving the mean of the differences)? A. When two independent samples are compared. B. When two dependent samples are compared. C. When four samples are compared at once. D. When any two samples are compared.
Answers
Answer:
B. Two dependent samples are compared
Step-by-step explanation:
We use it when we are comparing Two dependent samples. The paired t-test can be likened to the repeated measures ANOVA test. Both of these two test are useful when comparing how a static group does in different test conditions.
But the difference between these two are:
We use the paired t-test if the explanatory variable has two levels.
While the Repeated measures ANOVA is used when the explanatory variable has greater than two levels.
PLEASE HELP !! Select all the correct answers.
Janine needs to calculate the value of log12 81
Which expressions could she input into her calculator to find this value?
Answers
Answer: In 81/ In 12 AND log 81/log 12
Step-by-step explanation: PLATO ANSWER I got 100%
To solve the problem we must know about the change of base rule for Logarithm.
What is the change of base rule for Logarithm?The change of base rule for Logarithm helps us to change the base of any logarithmic expression to any other logarithmic expression.
[tex]log_ab = \dfrac{log_x b}{log_x a}[/tex]
where x is any base.
The expression can be expressed as [tex]\dfrac{log\ 81}{log\ 12}[/tex].
Given to us
[tex]log_{12}81[/tex]Change of base rule[tex]log_{12}81\\[/tex]
use the change of base rule, [tex]log_ab = \dfrac{log\ b}{log\ a}[/tex],
[tex]log_{12}81=\dfrac{log\ 81}{log\ 12}[/tex]
Hence, the expression can be expressed as [tex]\dfrac{log\ 81}{log\ 12}[/tex].
Learn more about Logarithm:
https://brainly.com/question/7302008
Given the figure below, which of the following points name a line segment, a line, or a ray?
point B and point C
point A and point C
point D and point A
point E and point A
Answers
Answer:
Point a and point c
i dont know anything else
Answer:
a and c
Step-by-step explanation:
plz give me brainliest
Do not round your answer. Type in just the number. 0.48 is what % of 1 .6
Answers
Answer:
0.00768
Step-by-step explanation:
Answer:
30%
Step-by-step explanation:
1.6÷100=0.016
1% - 0.016
0.48÷0.016=30
-b-2>8
Pls help me! I’m really confused
Answers
Answer:
b<−10
Step-by-step explanation:
Answer:
b<-10
Step-by-step explanation:
Inequality: -b-2>8
Step 1: Add 2 to both sides
-b-2+2>8+2
-b>10
Step 2: Divide both sides by -1
-b > 10
_ _
-1 -1
b<-10
Hope this helps you!!!!
What is the area of the figure below?
43 in
3 in
48 in 2
5 in.
68 in 2
1
88 in 2
5 in
3 in
3 in
7 in,
Answers
Answer:
68in
Step-by-step explanation:
I ready test
Answer: 68
Step-by-step explanation:
‘Multiply all of them and boom
multiply (-18)(-13) its for usatestprep
Answers
Answer:
Step-by-step explanation:
Here you go mate
Step 1
(-18)(-13) Equation/Question
Step 2
(-18)(-13) Multiply
234
Answer
234
3. If A = 6x^2 - x^2 + 4x + 8 and B = 2x^3 + x - 5 then A - B equals
(1) 4x3 - x2 + 3x – 13
(2) 8x3 - x2 + 5x + 3
(3) 4x3 – x2 + 3x + 13
(4) 8x3 + 3x + 3
Answers
Hi there!
[tex]\large\boxed{(3) \text{ } 4x^{3} - x^{2} + 3x + 13}[/tex]
Given:
A = 6x³ - x² + 4x + 8
B = 2x³ + x - 5
Find A - B by subtracting the two equations. Subtract like-terms:
6x³ - x² + 4x + 8 - (2x³ + x - 5)
Simplify:
6x³ - x² + 4x + 8 - 2x³ - x + 5 =
4x³ - x² + 3x + 13. The correct choice is 3.