(-7,-5)
Step-by-step explanation:
3x-8y = 19
minus
3x + 5y = -46
0x - 13y = 65
- 13y = 65
÷-13
y = - 5
Substitute y = - 5 into one of the functions:
3x-8y = 19
-8 x - 5 = 40
3x + 40 =19
-40
3x. = - 21
÷3
x= - 7
Solution is (-7,-5)
Hope this helps!
I need HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
no calculator or Excel sheet ?
(4×(4 + 3)) - 3 = (4×7) - 3 = 28 - 3 = 25
((7 - 5) ÷ 1/2) × 2 = (2 ÷ 1/2) × 2 = (2 × 2) × 2 = 4×2 = 8
(5.4 + 3) × (6 - 2) = 8.4 × 4 = 33.6
(9 ÷ 3 + 6) × 3 = (3 + 6) × 3 = 9×3 = 27
(4 + 3.2) × ((9 - 2) + 2.5) = 7.2 × (7 + 2.5) = 7.2 × 9.5 = 68.4
remember 2 things :
1. first priority for the sequence of operations is defined by brackets. second priority are multiplication and division (both are on the same level, and you can do them either way). and only third priority is addition and subtraction (they come last, and if you keep the "-" signs with the numbers, you can do them also in any sequence among each other : a - b = -b + a).
2. when you divide by a fraction, then this is the same as multiplying with the upside-down version of that fraction.
a / 1/b = a × b/1 = a × b
PLEASE HELP FAST!!♡
For f(x) = -x+2 and g(x) = x + 4, find f(x) = g(x).
Answer: x=-1
Step-by-step explanation:
Can anyone solve this?
Answer:
A) 96 cm
Step-by-step explanation:
Split into three parallelograms
Shape 1: 6 by 7 6×7=42
Shape 2: 3 by 4 3×4=12
Shape 3: 6 by 7 6×7=42
42+12+42=96
Answer:
96 cm
Step-by-step explanation:
Breaking the shape up into 3 smaller rectangles then finding the area of each gives us the total area
[tex]6*7=42*2=84[/tex]
[tex]3*4=12[/tex]
[tex]84+12=96[/tex]
Which statement is NOT true?
Answer: C. is not correct because angle 2 and angle 5 are same side interior angles. Same side interior angles of parallel lines always add up to 180 degrees. Therefore, the only way angle 2 would be equal to angle 5 would be if they were both 90 degrees, which the two angles are not always right angles.
93 is 150% of what number?
Answer:
62
Step-by-step explanation:
93÷150=0.62
×100 = 62
Hope this helps!!!!
Answer:
62
Step-by-step explanation:
Divide
93/150% = 62
(100*93) / 150
9,300/150 = 62
help me pls i need help
Answer:
8
Step-by-step explanation:
5x+3=x+11
x=?
(step by step, I am very not smart)
Answer:
x=2
Step-by-step explanation:
5x+3=x+11
5(2)+3=2+11
10+3 = 2+11
13=13
Therefore, x=2
(basically you just plug in random numbers and see if it gets you the same answer on both sides)
Hope this helps!!
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
Step-by-step explanation:
½+⅛ = ⁴/8 + ⅛ = ⅝
bold one's are answer.
hope this helps you.
There are three angles on a straight line. What could they be if they are all multiples of 5⁰ ?
The multiples of 5 include 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80...
Given that its a straight line, so the sum of three angles is 180°
So possible angles:
60°, 60°, 60°75°, 35°, 70°50°, 70°, 60°35°, 95°, 50°..
A trapezoid has 19 inches base, as well as 10.8 inches height. What is the area?
please help in math!!! i need help in both (a) and (b) !! brainliest to who answers both!!
Part A
Answers:
Number of terms = 2Type = BinomialVariables = p and qNumerical coefficients = 4 and 7Degree = 3-------------------------
Explanation:
The two terms are separated by a plus sign. Since we have two terms, we have a binomial.
bi = 2nomial = names or termsThe variables are p and q, acting as placeholders for unknown numbers.
The coefficients are the numbers to the left of the variables, which are the 4 and 7.
The degree of multivariable polynomials is found by adding up the exponents for each term, then picking the largest sum. In each case, we get a sum of 3 for each monomial. The degree of the entire polynomial is therefore 3.
==============================================
Part B
Answer: t^3 - 20t + 26
-------------------------
Explanation:
We have an expression of the form
(6t^3-3t+5) - x = (5t^3 + 17t - 21)
which rearranges to
-x = (5t^3 + 17t - 21) - (6t^3-3t+5)
-x = 5t^3 + 17t - 21 - 6t^3 + 3t - 5
-x = (5t^3 - 6t^3) + (17t+3t) + (-21-5)
-x = -t^3 + 20t - 26
x = -(-t^3 + 20t - 26)
x = t^3 - 20t + 26
1. Solve the following inequality on your own paper and select the best answer below.
Answer:
C. y≥2
Step-by-step explanation:
y+5≥7
You must subtract 5 from both sides
y≥7-5
y≥2
A number cube is rolled and a coin is flipped. What is the probability that a number greater than 2 is rolled and the coin lands on heads?
Answer:
1/3
Step-by-step explanation:
The probability that a number greater than 2 is rolled is 4/6 {2, 3, 4 and 6} The probability that the coin lands on heads is 1/2
You can multiply 1/2 and 4/6 to find out the total number of possible outcomes: 1/2 × 4/6 = 4/12. This can be simplified to 1/3.
Hope this helps!
3x + 7x - 3y = 12
what is the simplifyed equation?
Answer:
10x-3y=12
Step-by-step explanation:
In algebra, we always add alike terms. Meaning, when a set has numbers with the same variable, in this case it was x, we can add/substract/divide them to simplify the equations.
Which polynomial is prime? x4 3x2 – x2 – 3 x4 – 3x2 – x2 3 3x2 x – 6x – 2 3x2 x – 6x 3.
The polynomial [tex]3x^2+x-6x+3[/tex] is a prime polynomial because it is not reducible or does not have factors.
Given polynomials are:
[tex]1)x^4+3x^2-x^2-3\\\\2)x^4-3x^2-x^2+3\\\\3)3x^2+x-6x-2\\\\4)3x^2+x-6x+3[/tex]
What are prime polynomials?A polynomial not having more than one factor is called a prime polynomial.
Factors of the first polynomial are [tex](x^2-1),(x^2+3)[/tex]
Factors of the second polynomial are [tex](x^2-1),(x^2-3)[/tex]
Factors of the third polynomial are [tex](x-2) (3x+1)[/tex]
There are no factors of the fourth polynomial so this is a prime polynomial.
Therefore, the polynomial [tex]3x^2+x-6x+3[/tex] is a prime polynomial.
To get more about the polynomial visit:
https://brainly.com/question/2833285
A boy is older than his sister by 3 years five years ago, the ratio of their ages was 4:3. Find the present age. let the age of the boy be b and the age of the sister be s
Answer:
Let brother's present age be x and sister's present be y
x=y+3
5 years ago
x-5/y-5=4/3
Putting the value of x
y+3–5/y-5=4/3
y-2/y-5=4/3
3(y-2)=4(y-5)
3y-6=4y-20
y=14
x=14+3=17
Brother's present age =17years, sister's present age=14years
What is the answer ?5(y+2/5)=-13
Answer:
y=-3
Step-by-step explanation:
5(y+2/5)=-13
5y+2=-13
5y=-15
y=-3
Find x in APQR.
R
х
5 P
12
a.
13
b. 15
d. 160
C.
16
Answer:
the answer is 16 okay it simple ok
The sum of three consecutive odd integers is 17 less than four times the smallest integer. Find the integers.
Please help, thank you!
Answer:
23, 25, 27
Step-by-step explanation:
n + (n+2) + (n+4) = 4n - 17
3n + 6 = 4n - 17
3n - 4n = -17 - 6
-n = -23
n = 23
therefore,
23, 25, 27 are the 3 consecutive odd integers
The edges of the bases of the frustum of a regular square pyramid have lengths 5 and 9, and the slant height of the frustum is 6.
What is the volume of the frustrum
I will give 100 points
We know that,
[tex]V = \frac{1}{3} (a{}^{2} + ab + b{}^{2})h \\ [/tex]
Also,
[tex]l {}^{2} = h {}^{2} + (b - a) {}^{2} [/tex]
[tex]6{}^{2} = h {}^{2} + (9 - 5) {}^{2} [/tex]
[tex]36 = h {}^{2} +16[/tex]
[tex]h {}^{2} = 36 - 16[/tex]
[tex]h = \sqrt{20} [/tex]
[tex]h = 4.47[/tex]
Now , putting the value in the formula of volume
we get,
[tex]V = \frac{1}{3} (5{}^{2}+ 5 \times 9 + 9{}^{2})4.47 \\ [/tex]
[tex]V = \frac{1}{3} (25 + 5 \times 9 + 81)4.47 \\ [/tex]
[tex]V = \frac{1}{3} (25 + 45 + 81)4.47 \\ [/tex]
[tex]V = \frac{1}{3} \times 151 \times 4.47 \\ [/tex]
[tex]V = 224.99[/tex]
Hence, the volume of the given frustum is 224.99 cubic unit
Explain how to find the mean of a data set.
Answer:
to find the mean you must add all of the numbers in a data set together and then divide by how many numbers there are.
Answer:
give brainliest?
Step-by-step explanation:
the mean or average of a data set is found by adding all numbers in the data and then dividing by the number of values in the set.
For example, if you have 10 numbers, you add them up and divide by 10. This would give you the mean of the data.
Here's another example with the numbers: 9,8,22,7,7,8,17
First add the numbers up: 9+6+20+7+7+8+20+2+2 = 81 Then divide 81 by the total number of data points, 9, and you get 9.
Theerefore the mean is 9.
What is the rule that describes the following number pattern
0,25;2,5;25;250
Answer:
aₙ=0.25*10ⁿ.
Step-by-step explanation:
0.25*10=2.5; 2.5*10=25; 25*10=250.., then it can be written as aₙ=0.25*10ⁿ
What is the closest whole number approximation of √50?
Answer:
7
Step-by-step explanation:
√50 is close to √49
49 is a perfect square, 50 is close to 49.
√49 = 7
√50 ≈ 7.071068
Answer:
7
Step-by-step explanation:
[tex]\sqrt{50} =7.07[/tex]
Hope this helps
....................
Answer:
sub to juice_fox. ?....
Please help me do to night
Answer:
1.) -4x+30y 2.) distributive property 3.) -4x+30y, (-0.4(3)+3(2)), 10(-1,2)+10(6), -12+60, =48
Step-by-step explanation:
10(-0.4x+3y)= 10(-0.4x)+10(3y)= -4x+30y
10(-0.4(3)+3(2))
10(-0.4(3))+10(3(2))
10(-1.2)+10(6)
-12+60
= 48
Macy's department store just had a huge sale and now needs to increase the price of all retail by 13%. What will be the price of the shirt after the markup?
(the shirt costs $42.00)
Answer:
47.46 dollars
Step-by-step explanation:
If the store Macy has to increase the retail by 13%, then Macy store must increase the shirt. So you must increase 42 dollar by 13%.
2-1/2x=y what is this in slope intercept form
Answer:
y=-1/2x+2
Step-by-step explanation:
2-1/2x=y
y=2-1/2x
y=-1/2x+2
Select all expressions that are equal to
5
8
.
A.
1
8
+
1
8
+
1
8
+
1
8
+
1
8
B.
2
4
+
3
4
C.
1
8
+
2
8
+
3
8
D.
4
8
+
1
8
E.
4
7
+
1
1
Select all expressions that are equal to 5/8.
A. 1/8 + 1/8 + 1/8 + 1/8 + 1/8B. 2/4 + 3/4C. 1/8 + 2/8 + 3/8D. 4/8 + 1/8E. 4/7 + 1/1Solution:Let's review each option one by one.
Option A
1/8 + 1/8 + 1/8 + 1/8 + 1/8 = 5/8=> (1 + 1 + 1 + 1 + 1)/8 = 5/8=> (5)/8 = 5/8 (True)Thus, Option A is correct.
Option B
2/4 + 3/4 = 5/8=> (2 + 3)/4 = 5/8=> 5/4 = 5/8 (False)Thus, Option B is incorrect.
Option C
1/8 + 2/8 + 3/8 = 5/8=> (1 + 2 + 3)/8 = 5/8=> 6/8 = 5/8 (False)Thus, Option C is incorrect.
Option D
4/8 + 1/8 = 5/8=> (4 + 1)/8 = 5/8=> 5/8 = 5/8 (True)Thus, Option D is correct.
Option E
4/7 + 1/1 = 5/8=> 4/7 + 7/7 = 5/8=> (4 + 7)/7 = 5/8=> 11/7 = 5/8 (False)Thus, Option E is incorrect.
Final Answer(s):Option A and D are correct.What does it mean for lines to be parallel?
What does it mean for lines to be perpendicular?
Answer:
for lines to be Parallel it means they will never touch. Think of train tracks. The two rails will never touch each other. For lines to be perpendicular they have to meet each other to form a corner. think the edge of a desk.
The local shelfer
d of their dogs and cats in
preparation for the holidays. The sale
was $ 100 for a dog and $15 for a
cat. If the shelter earned $1,390 for
seling dl 19 of their animds, how many
dogs and cats were adopted?
d + c = 19
100d + 15c = 1390
we can simplify the second equation
20d + 3c = 278
now d + c = 19
c = 19 - d
3c = 57 - 3d
now plug into second equation
20d + 57 - 3d = 278
17d = 278 - 57
17d = 221
d = 221 / 17
d = 13
now we can plug this into the first equation
13 + c = 19
c = 19 - 13
c = 6
13 dogs were sold and 6 cats were sold