(QUICK!)Please answer this question, explain and show your work for brainliest! (systems of equations, either using elimination or substitution method!)
Answer:
Step-by-step explanation:
y = - 7x ......... (1)
- 14x - 2y = 0 ....... (2)
- 14x - 2y = 0 ⇒ y = - 7x
(1) and (2) are equivalent ⇒ system has infinitely many solutions
Question 11
1 pts
A baby was 6 lb 8 oz at birth. At one month old, she weighed 9 lb 2 oz. How much weight did the
baby gain in the first month?
Answer:
2 lb and 4oz
Step-by-step explanation:
because if you do 9lb 2oz minus 6lb 8oz you get 2 lb 4oz
time as 3 meters of yarn. How many centimeters of yarn does Tim have?
What is the answer?
[tex]\text{Given that,}\\\\\tan x = \dfrac 3{10}\\\\\text{Now,}\\\\\sin 2x = \dfrac{2\tan x}{1+ \tan^2 x}\\\\\\~~~~~~~~=\dfrac{2 \cdot \tfrac 3{10}}{1+ \left(\tfrac 3{10} \right)^2}\\\\\\~~~~~~~~=\dfrac{\tfrac 35}{1+ \tfrac 9{100}}\\\\\\~~~~~~~~=\dfrac{ \tfrac 35}{\tfrac{109}{100}}\\\\\\~~~~~~~~=\dfrac 35 \times \dfrac{100}{109}\\\\\\~~~~~~~~=\dfrac{60}{109}\\\\\\~~~~~~~~=0.5505[/tex]
how do i do this? im confused
Answer:
θ ≈ 64.62°
Step-by-step explanation:
In this problem we will use trig: SOH CAH TOA. Since we are given hypotenuse (line AB) and adjacent (line ) to the missing angle θ, we will use cosine.
cosθ = adjacent/hypotenuse
cosθ = 3/7
Now take inverse cosine of both sides to cancel out cosine and find the missing angle:
cos⁻¹(cosθ) = cos⁻¹(3/7)
θ = cos⁻¹(3/7) ----> Plug into calculator
θ ≈ 1.128 radians · 180°/π rad ------>. Convert from radians to degrees
θ ≈ 64.62°
Hope this helps!
Answer: The measure of angle ? is approximately 64.62 degrees.
Step-by-step explanation:
The given value 3 is adjacent to angle ? and 7 is the hypotenuse. Remembering SOH CAH TOA, that means 3/7 = cos(?). To solve, use a calculator to find the inverse cosine of 3/7, which is about 64.62. Look at https://www.khanacademy.org/math/trigonometry/trigonometry-right-triangles/trig-solve-for-an-angle/a/inverse-trig-functions-intro to get a better understanding if needed.
What is answer of D rounded to the nearest tenth
If l=5,b=3cm,c=2cm, find its volume
Answer:
30 cm³
Step-by-step explanation:
Volume = lbc
V = l x b x cV = 5 cm x 3 cm x 2 cmV = 30 cm³Answer:
The volume is 30 cm³
Step-by-step explanation:
Volume = l×b×c
=> 5×3×2
=> 30 cm³
calculate the social security and Medicare deductions for the following employee (assume a tax rate of 6.2% on $128,400 for social security and 1.45% for Medicare)
cumulative earnings before this pay period: $409,100
pay amount this period: $8,800
Answer:
Several interpretations:
1. If you're simply looking for the math involved in the employee's portion of the $8,800: 6.2% +1.45% = 7.65%. So 7.65% of $8,800 = $673.20.
2. If you are trying to calculate total FICA for this pay period, it would be 12.4% + 2.9% since these amounts are split between the employer and employee (15.3% = $1,346.40).
3. If you are trying to calculate the total for this pay period given that their YTD earnings are $417,900 (lucky employee!), they do not owe anything (see explanation below).
Step-by-step explanation:
The OASDI program limits the amount of earnings that are subject to taxation in a given year. For 2022, the contribution and benefit base, otherwise known as the taxable maximum, is $147,000. The taxable max for 2018 was $128,400).
Assuming this employee has exceeded that amount as their current YTD income is $417,900 (409,100 + 8,800), they don't owe anything.
Quick Edit:
My apologies! An additional 0.9% Medicare tax is added for taxable income exceeding $200,000 depending on their filing status. Table is available at https://fitsmallbusiness.com/
In a triangle ABC, a = 13. b = 11 and c = 15. Solve the triangle.
Answer:
169 + 121 = 225
Step-by-step explanation:
It is not a right triangle
A squared + b square should equal c squared.
169 + 121 = 290
Solve: 2^3x-5*a^x-2=2^x-2*a^1-x
Answer:
The value of "a" is 1/2.
You can also check the answer by putting the value of a in the given equation...
if u need it let me know
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar.
A complex number, (a + bi), multiplied by (2 + 3i) and added to -i gives the product of (-11 + 5i) and (1 – i).
a = and b =
The value of a is equal to 3 and the value of b is equal to 4.
Complex Number
A Complex Number is represented by z=a+bi, where:
a= real part
bi= imaginary number
b= imaginary part
i= [tex]\sqrt{-1}[/tex], therefore i²= -1
For solving this question, you should solve the product (-11 + 5i) * (1 – i). After that, you should compare the previous results with the result for expression ( (a + bi)* (2 + 3i) )-i. From this comparison, using the linear system you will find the variables a and b.
Step 1 - Solve the product (-11 + 5i) * (1 – i)(-11 + 5i) * (1 – i)=
-11 +11i +5i -5i²
-11 +16i -5i², as i²= -1 you can rewrite
-11 +16i -5(-1)
-11 +16i +5
-6+16i
Then,
(-11 + 5i) * (1 – i)= -6+16i
Step 2 - Simplify the expression ( (a + bi)* (2 + 3i) )-i( (a + bi)* (2 + 3i) )-i
(2a+3ai +2bi +3bi²) -i, as i²= -1 you can rewrite
(2a+3ai +2bi +3b(-1)) -i
(2a+3ai +2bi -3b) -i
( (2a-3b) + i(3a +2b) ) -i ,
For adding complex numbers, you must add or subtract the corresponding real and imaginary parts. Thus, you will have:
(2a-3b) + i(3a +2b-1)
Then,
( (a + bi)* (2 + 3i) )-i= (2a-3b) + i(3a +2b-1)
Step 3 - Identify real and imaginary parts for previous results
For (-11 + 5i) * (1 – i)= -6+16i
real part = -6
imaginary part = 16
For ( (a + bi)* (2 + 3i) )-i= (2a-3b) + i(3a +2b-1)
real part = 2a-3b
imaginary part = 3a +2b-1
Step 4 - Construct a linear system from real and imaginary parts2a-3b= -6
3a +2b-1=16, you can rewrite as 3a +2b=17.
Thus the system will be:
[tex]\begin{bmatrix}2a-3b=-6\\ 3a+2b=17\end{bmatrix}[/tex]
Step 5 - Solving the linear system
2a-3b=-6 (1)
3a+2b=17 (2)
Multiplying equation 1 by 2 and equation 2 by 3, you can rewrite as:
4a-6b= -12
9a+6b=51
Sum the equations
4a-6b+9a+6b= -12 +51
13a= 39
a=39/13=3
Replacing the value of a=3 in equation 1, you can find b.
2a-3b=-6 (1)
2*3-3b= -6
6 -3b = -6
-3b = -6 -6
-3b= -12
b= -12/-3 = 4
Read more about complex numbers here:
https://brainly.com/question/5564133
Find the volume of the rectangular prism below. A cube that is sixteen cm in length, twenty two centimeters in width, and twelve centimeters in height.
4,224 cm3
424 cm3
42.42 cm3
42,224 cm3
Answer:
4224 cm3
Step-by-step explanation:
V= w•h•l
4224 = 22•12•16
at a certain wedding, 14/25 of the guests were over 25 years old.
Rewrite the fraction in the sentence below as a percentage.
Answer:
56% of the guests were over 25 years old.
Step-by-step explanation:
To convert a fraction to a percentage, multiply the fraction by 100. So, 14/25 can be multiplied by 4 to get 56/100, which is the same as 56%.
FIND THE VALUES OF X AND Z FOR BRAINLIEST! :)))
Answer:
x = 20
z = 87
Step-by-step explanation:
Suplementary angles:
9x - 87 + 87 = 180
9x = 180
x = 20
Vertical angles:
z = 87
Answer:
z=87 x=20
Step-by-step explanation:
z=87 because vertical angles are congruent
87x2=174
360-84 =186
186/2=93 (the other 2 vertical angles are 93 each)
9x-87 =93
9x=180
x=20
Help, this is my math hw and I don't get it!
Pictures are attached below...
I need to show my work too, so i need a file to your work!
I'll mark brainliest if you can answer it.
30x³ + 10x²
Help me please
*basically you write the function in its simplest term where you cannot
simplify it further
So:
[tex]30x^3+10x^2 = 10(3x^3+x^2) = 10x^2(3x+1)[/tex]
Answer: [tex]30x^3+10x^2[/tex] when factorized ⇒ [tex]10x^2(3x+1)[/tex]
Hope that helps!
c. A detergent contains a mixture of chemicals: A, B and C in the ratio 4: 10:10. A bottle of detergent contains 1.8 litres of Chemical C. How much of chemical A and B does the bottle contain? 161
Answer:
A = 0.72l B = 1.8l C = 1.8l
Step-by-step explanation:
A:B:C = 4:10:10
It means that B and C are equal
It is told that C contains 1.8 liters
B have to contain 1.8 liters too
1.8l*4/10 = 0.72l
You can also write it like this (this version is easier for me):
1.8l:10 = 0.18l
4*0.18l = 0.72l
Hope that I helped :)
Calculating the Surface Area of Prisms
4 yd
2 yd
5 yd.
3 yd
3 yd.
Find the surface area of the prism above.
I need help please someone!!
360 yd
Multiply all numbers to get 360 yd
distance between these points
X (-3, -4 ) Y (5, 5)
Answer:
12.0
Step-by-step explanation:
The distance betwen the two points is the slope/gradient of that line.Slope/gradient = c (pythagoras theorem) : [tex]c^{2} = a^{2} + b^{2}[/tex]x = a, y = bx = 5 - (-4) = 5 + 4 = 9y = 5 - (-3) = 5 + 3 = 8[tex]c^{2} = 8^{2} + 9^{2}[/tex]
= 64 + 81
= 145
[tex]\sqrt{c^{2} } = \sqrt{145}[/tex]
Therefore,
c = 12.0 (3 s.f.)
Find the surface area of the rectangular prism using the net
Answer:
170 in²
Step-by-step explanation:
Surface Area
⇒ (2 x Length x Height) + (2 x Width x Height) + (2 x Length x Width)
⇒ (2 x 6 x 5) + (2 x 5 x 5) + (2 x 6 x 5)
⇒ 60 + 50 + 60
⇒ 170 in²
TSA:-
2(LB+BH+LH)2(6×5+5×5+5×6)2(30+25+30)2(85)170in^2Which of the following is true the
longer the term of the loan and the
longer it takes to pay it back?
A. The less you will pay in interest costs.
B. The more you will pay in interest costs.
C. The less it changes the amount you pay.
D. The quicker you will pay back the money you owe.
Answer:
the more you will pay in interest cost
help help help got math math
Answer:
>
Step-by-step explanation:
This is the greater than symbol. Think of it like an alligator mouth that wants to eat the larger number. 3.2 is larger than -99.
Answer:
3.2 > -99
Step-by-step explanation:
3.2 ? -99
3.2 (positive number)
-99 (negative number)
Positive numbers are always bigger than negative numbers
3.2 ? -99
3.2 > -99
Hope this helps!
Find the product or expression:
(a+16)2
Answer:
[tex]\boxed{\sf{2a+32}}[/tex]Step-by-step explanation:
You have to use a distributive property.
Distributive property:
→ A(B+C)=AB+AC
⇒ (a+16)2
→ 2(a+16)
Multiply.
⇒ 2*a=2a
→ 2*16=32
Rewrite the problem down.
⇒ 2a+32
Therefore, the correct answer is 2a+32.I hope this helps you! Let me know if my answer is wrong or not.
Hi!
Given:
[tex](a+16)2[/tex]
See the 2 out in front of the parentheses? Using the distributive property, we need to multiply that 2 by each of the terms inside of the parentheses. See the attached image below for more information.
So:
[tex]2*a+16*2[/tex]
[tex]2a+32[/tex]
Therefore, your answer is 2a + 32
Corey deposits $3500 a bank which pays 3%
interest per year. How much money will John have in
his account after 10 years?
Answer:
35,000
Step-by-step explanation:
Answer:
Corey will have $4550.00 in is account after 10 years.
Step-by-step explanation:
This is simple interest. Here is the formula for simple interest.
[tex]A=P(1+r*t)[/tex]
A = Final Amount
P = Principal Amount
R = Interest Rate
T = Time
We are given values for P, r, and t. Lets solve for A.
To get 3 percent as a decimal divide it by 100. We get 0.03.
[tex]P=3500[/tex]
[tex]r=0.03[/tex]
[tex]t=10[/tex]
[tex]A=3500(1+0.03*10)[/tex]
[tex]A=3500(1+0.30)[/tex]
[tex]A=3500(1.30)[/tex]
[tex]A=4550[/tex]
PLEASE HELP
Type the correct answer in the box. Use numerals instead of words.
What is the value of this expression?
log, 8 + log; (3)
Answer:
[tex]\log(24)[/tex]
Step-by-step explanation:
[tex]\log(8)+\log(3)=\log(8*3)=\log(24)[/tex]
10.A water tank has strps inside it. A monkeyis sitting on topmost floor(i.e.,the first step).The water level is at ninth step. (ii)After drinking water,he wants to go back 2 steps down in every move.In how many jumps will he reach back the tops step?
Answer:
11 id.k i think
Step-by-step explanation:
i think that it
Please help me asap I’ll mark brainly
Answer: 36
Step-by-step explanation:
Answer:
Step-by-step explanation:
first box (far left) should be 1/6
second box should be 24
third box (far right on first equation) should be 10
p = 24
WORTH 1 POINT
GIVING 15 POINTS AWAY
HELP PLS!!!!
Answer:
y = 29
Step-by-step explanation:
Since it is a vertical angle, both angles represented by the equations are equal. Meaning we can set them equal to each other and find y by simplifying.
4y-8 = 79+y
-79 -79
4y-87 = y
-4y -4y
-87 = -3y
Divided by -3
29 = y
Help picture below problem 4
Answer:
The answer is A
Step-by-step explanation:
A pentagon is a polygon that has 5 sides and 5 vertices.
At a concession stand, five hot dog(s) and four hamburger(s) cost $15.25, four hot dog(s) and five hamburger(s) cost $16.25. Find the cost of one hot dog and the cost of one hamburger
Answer:
0.45
3.25
Step-by-step explanation:
16.25 ÷ 5 = 3.25
15.25 - 3.25 × 4 = 2.25
2.25 ÷ 5 = 0.45
Check Answer:
3.25 × 5 = 16.25
0.45 × 4 = 2.25
3.25 - 2.25 = 1
16.25 - 1 = 15.25
~lenvy~
