Answer:
[tex]x = 26 \frac{1}{3} \\ [/tex]
[tex]y = 13 \frac{2}{3} \\ [/tex]
Step-by-step explanation:
x = 2y - 1
x - 2y = -1 ________(1)
x + y = 40________(2)
(2) - (1)
[tex]x + y - (x - 2y) = 40 - ( - 1) \\ x + y - x + 2y = 40 + 1 \\ 3y = 41 \\ y = \frac{41}{3} \\ y = 13 \frac{2}{3} \\ [/tex]
y = 13 2/3
[tex]x + y = 40 \\ x + 13 \frac{2}{3} = 40 \\ x = 40 - 13 \frac{2}{3} \\ x = 40 - \frac{41}{3} \\ x = \frac{3(40) - 41}{3} \\ x = \frac{120 - 41}{3} \\ x = \frac{79}{3} \\ x = 26 \frac{1}{3} \\ [/tex]
Simplify the expression -3 devided by -2/5. A. -7 1/2 B. -1 1/5 C. 1 1/5 D. 7 1/2
Answer:
D. 7 1/2
Step-by-step explanation:
-3 divided by -2/5
-(-3(-5/2)
-(-3 x 5/2)
-15/2
7 1/2
Hope it helps
Determine whether the series -3 + 9 - 27+ .... is convergent or divergent.
Answer:
divergent
Step-by-step explanation:
just took it
Charlie took a test with two parts; Reading with 60 questions and Math with 40 questions. He scored 55% on the Reading part and 90% on the Math part. What is his overall percentage score, assuming each of the 100 questions has equal weight?
Answer:
10
Step-by-step explanation:
Solve the system: 10x-9y=8 21y+15x=0.5
PLEASE HELP NEED ASAP
Answer:
x = 1/2
y = -1/3
Step-by-step explanation:
10x - 9y = 8 (Multiply by 3)
15x + 21y = 0.5 (Multiply by -2)
30x - 27y = 24
-30x - 42y = -1
-69y = 23
y = -1/3
10x - 9y = 8
10x - 9(-1/3) = 8
10x + 3 = 8
10x = 5
x = 1/2
What is the volume of the square pyramid, in cubic inches?
How many lines of symmetry does this shape appear to have?
Answer:
There are 6 lines of symmetry.
What is the sum of 52.07+8.43
Answer:
60.5
Step-by-step explanation:
Ehhh 52.07+8.43=60.5?
Pls Help Me find the Area T-T
Answer:
the answer is 55m^2 I think
Answer:
55 is the Area
Step-by-step explanation:
4 x 10 = 40
5 x 3 = 15
15 ÷ 2 = 7.5
5 x 3 = 15
15 ÷ 2 = 7.5
7.5 + 7.5 = 15
40 + 15 = 55
Give Me Brainllest
Will give brainliest for correct answer
Answer:
Step-by-step explanation:
1. Not a function
2. Not a Function
3. Function
A map has a scale of 1 inch: 3 kilometers. Use the given distance to find the distance on the
map
a) 18 km
b) 76 km
c) 0.5 km
What is the value of x
[tex]x {}^{2} \times 5x = 625[/tex]
Answer:
x = 5
Step-by-step explanation:
x^2 * 5x = 5x^3
5x^3 = 625 Divide by 5
x^3 = 625/5
x^3 = 125 Take the cube root of 125
x = 5
If 2^2x = 2^3, what is the value of x?
Answer:
X = 2 If the exponent 2 in the 2 does not have the x
Step-by-step explanation:
ANSWER THE QUESTION FOR BRAINLIEST
Answer:
c -1 and 2
Step-by-step explanation:
can i have BRAINLIEST?
Question is down in the image|||
Answer:
A
Step-by-step explanation:
ANSWER THE QUESTION FOR BRAINLIEST
which experimental probability from coach nelson's experiment equals the theorectical probability? what is this probability?
Answer:
QUESTION:
which experimental probability from coach nelson's experiment equals the theorectical probability? what is this probability?
ANSWER:
This will explain everything to you.
https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-theoretical-and-experimental-probability/v/comparing-theoretical-to-experimental-probabilites
Step-by-step explanation:
Hope that this helps you out! :)
If you have any questions please put them in the comment section below this answer.
Have a great rest of your day/night!
Please thank me on my profile if this answer has helped you.
Algebra 2 Help, Correct Answers only please!
A farmer is trying to decide how many acres of land he has planted by
finding the area, A, of his plot. x represents a measuring chain he is
using. If the plot has length (5x – 3) and width (2x + 7), which of the
following is the area in terms of x?
F 10x2 + 41x-21
H 10x2 + 29x - 21
G. 7X2 + 7x + 4
J. x2 - 6x +4
Answer:
H
Step-by-step explanation:
(5x-3) x (2x+7)
10x^2 + 35x - 6x - 21
10x^2 + 29x - 21
1. Name the side lengths of a 30 degree triangle. Hint adjacent, opposite, and hypotenuse.
What is m∠G to the nearest tenth?
Answer:
Step-by-step explanation:
tan(G) = 28.2/45.8
G = arctan(28.2/45.8) = 31.6°
Can someone find the error ??
And solve it
Please this geometry
Specials right triangle
In a 30-60-90 triangle the hypotenuse is 2 times the shortest leg.
In the problem, they multiplied the shortest leg by sqrt(3)
Hypotenuse = shortest leg x 2
Hypotenuse = 7 x 2 = 14 units
If the measure lf 2 is 83, what is the measure of 3?
Answer: 97
Step-by-step explanation:
2 and 3 form a supplementary angel, so the sum of the angles should equal 180
Find tan 0.
(Lots of points if correct)
Answer:
Your answer is 15/8
Please help I need to do this for homework but I have zero clue what to do.
The quarterback should have thrown the ball when the receiver was open about 16 yards down the field. Can you find how far the quarterback would have to throw the ball?
Answer:
[tex]20[/tex]
Step-by-step explanation:
[tex]12[/tex]²[tex]+16[/tex]²[tex]=400.[/tex]
[tex]\sqrt{400}[/tex][tex]=20[/tex]
please sove this
I will mark you as brainleist like and give five stars
Answer:
Negative
Step-by-step explanation:
A negative times a negative equals positive
A positive times a negative equals a negative
A positive times a positive equals a positive
Can somebody help me please!!
Answer:
Its A
Step-by-step explanation:
12) What type of triangles will always be similar to one another?
Answer:
Right
Step-by-step explanation:
Answer: Two equilateral triangles are always similar.
Step-by-step explanation:
.
In each row, decide whether the expression in column A is equivalent to the expression in column B. If they are not
equivalent, show how to change one expression to make them equivalent.
A
B
A.
3x-2x +0.5x
1.
1.5x
B.
3(x + 4)-2(x + 4)
2. x + 3
C.
6(x+4)-2(x + 5)
3. 2(2x + 7)
D.
3(x + 4)-2(x + 4) + 0.5(x + 4)
4. 1.5
For each situation write an eynression for the new balance using as few terms as possible
A. [tex]3x-2x+0.5x=1.5x[/tex], so the expressions are equivalent.
B. [tex]3(x+4)-2(x+4)=x+4[/tex], so the expressions are not equivalent. To make the expressions equivalent, add 1 to expression B.
C. [tex]6(x+4)-2(x+5)=6x+24-2x-10=4x+14=2(2x+7)[/tex], so the expressions are equivalent.
D. [tex]3(x+4)-2(x+4)+0.5(x+4)=1.5(x+4)[/tex], so the expressions are not equivalent. To make the expressions equivalent, multiply expression B by (x+4).
Use the distributive property to rewrite each expression in its equivalent form
Answer:
picture?
Step-by-step explanation:
Name 2 decimals that round to 8.64.
I need help plzzzzz
Answer:
8.643, 8.639
Step-by-step explanation:
Step-by-step explanation:
What is the number 8.64 rounded to the nearest tenth? -
What is 2.098 rounded to two decimal places? ... You could also use round-to-odd, which is like round-to-even in its ability to remove bias, ...