X=y-8 and -x-y=0 solve by substitution
Answer:
y=4
Step-by-step explanation:
x=y-8
-x-y=0
-(y-8)-y=0
Distribute the negative
-y+8-y=0
Combine the like terms
-2y+8=0
-8 (to both sides)
-2y=-8
Divide by -2
y=4
pls help I hate math rectangular prism
Answer:
[tex]352.5cm^{2}[/tex]
Step-by-step explanation:
[tex]A=3Rectangles+2Triangles\\=3*7.5*13.5+2*.5*6.5*7.5=352.5cm^{2}[/tex]
Debbie bought x pens. She paid $0.75, including tax, per pen. She gave the cashier $20 and received $8.75 in change. How many pens did Debbie purchase?
Answer:
15
Step-by-step explanation:
if she gave 20$ and got 8.75$ in change, she payed 11.25$
11.25$ (total) / 0.75 (per pen)= 15 (pens she bought)
How? (2x^2 - 3x - 4)(x + 7)
Answer:
[tex]2 {x}^{3} + 11{x}^{2} - 25x - 28[/tex]
Step-by-step explanation:
Using foil method, Multiply the first term
[tex]2 {x}^{2} \times x = 2 {x}^{3} [/tex]
Next, Multiply the Outer term in each parenthesis. (2x^2 and 7
[tex] 2 {x}^{2} \times 7 = 14 {x}^{2} [/tex]
[tex] 2 {x}^{2} \times 7 = 14 {x}^{2} \: \: \: 3x \times - x = - 3x[/tex]
Then, Multiply the Inner Terms (-3x,-4,7) in each parenthesis
[tex] - 3x \times 7 = - 21x[/tex]
[tex] - 4 \times x = - 4x[/tex]
Then multiply the last term (-4 and 7).
[tex] - 4 \times 7 = - 28[/tex]
Combine it you have
[tex]2 {x}^{3} + 14 {x}^{2} - 3 {x}^{2} - 21x - 4x - 28[/tex]
which simplify to
[tex]2 {x}^{3} + 11 {x}^{2} - 25x - 28[/tex]
Does anyone know this?
Answer:
B
Step-by-step explanation:
(2*5) - 2 = 8
May Nilbin Be With You
please help me
The measure of an exterior angle of a triangle is x. The measure of the adjacent interior angle is at least twice x. List three possible solutions for x.
Answer:
x=exterior
y=interior
x+y=180
y is greater than or = to 2x.
So one value could be x+2x=180
3x=180
x=60
or you could do 2x+1+x=180
3x=179
x=179/3
or 2x+2+x=180
3x=178
x=178/3
Step-by-step explanation:
The product of 16 and the variable p
Answer:
16p
Step-by-step explanation:
Answer:
16p
Step-by-step explanation:
Have a great day
What is the solution for xsquared= 64
A. Positive or r 4
B. 4
C. Positive or negative 8
D. 8
Answer:
64 rooted is D. 8
Charlotte needs to order some new supplies for the restaurant where she works. The restaurant needs at least 535 glasses. There are currently 321 glasses. If each set on sale contains 20 glasses, write and solve an inequality which can be used to determine s, the number of sets of glasses Charlotte could buy for the restaurant to have enough glasses.
Answer:
sadafsa a a a a a aa. a heehehwhwhwh hehehheeheheh im going to bed ehehebbebeeb for al jfdjskalsm or worse expelled harry potter
Mallorie has $15 in her wallet. If this is 25% of her monthly allowance, what is her monthly allowance
Sarawong invests $4,537 in a retirement account with a fixed annual interest rate of 4.55% compounded quarterly. What will the account balance be after 17 years?
Answer:
$8,046.37
Step-by-step explanation:
4,537*0.0455= 206.4335
206.4335*17=3509.3695
4537+3509.3695=8046.3695
8046.3695 rounded = $8,046.37
A car moving on a highway covers the first 400.0 m in 18.0s and then covers the next 250.0 m in 24.0 s.
What is the average speed of the car?
Answer: 15.48 m/s
Step-by-step explanation:
The following information can be gotten from the question:
Total distance covered by the car will be:
= 400m + 250m
= 650m
Total time taken = 18.0s + 24.0s = 42s
Average speed = Distance/Time
= 650/42
= 15.48 m/s
7 + x/5 = - 4 x=___ help
Answer:
x = -55
Step-by-step explanation:
7 + x/5 = -4
Combine the constants.
x/5 = -11
Multiply both sides by 5 to simplify the denominator.
x = -55
Check.
7 + (-55)/5 = -4
7 + (-11) = -4
7 - 11 = -4
-4 = -4
Your answer is correct.
Hope this helps!
Answer:
[tex]7 + \frac{x}{5} = - 4 \\ \frac{x}{5} = - 4 - 7 \\ = - 11 \\ x = - 11 \times 5 \\ = - 55[/tex]
In a sale normall prices are reduced by 10% Natalie brought a pair of shoes from the sale and they cost £54 what was the original price
Answer: £60
Step-by-step explanation:
Natalie bought a pair of shoes for £54 which had been reduced by 10%.
To find the original cost, assume the original cost is x.
The discount would be: 10% * x
The expression would therefore be:
x - (10% * x) = 54
x - 0.1x = 54
0.9x = 54
x = 54 / 0.9
x = £60
There are 3 cats for every 5 dogs at the shelter. If there are more than 20 animals at the shelter, what is the minimum number of cats?
Answer:
9 cats
Step-by-step explanation:
Plz help me!! Giving brainliest
Answer:
16.8
Step-by-step explanation:
just look at the length to the side of it (the "28") and look at the given answers. 4 seems way too small and because the line is shorter than 28 it cant be 43, so 16.8 is the most reasonable option.
what does 3(y + 4) = 3y + 12 equal?
Answer:
15y
Step-by-step explanation:
If you add 3 and 12 together you get 15 and when you get 15 you add in the y
Answer:
Y= - 4/3x + 4
Hope this helps :))
i need someone to help me understand this and questions like this
Answer:
a >= -3
Step-by-step explanation:
So A
Solve the equation 16x^3+16x^2-x-1=0 given that -1/4 is a zero of f(x)= 16x^3+16x^2-x-1. Solution set is ___
Answer:
I love algebra anyways
The ans is in the picture with the steps how i got it
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Which of the values of m and b will create a system of equations will infinitely many solutions y=mx+b ,y=-2x+4
I hope and useful for your help
Triangle A is the pre-image in a translation, and triangle B is the image, as shown below.
On a coordinate plane, triangle A is shifted 6 units to the right to form triangle B.
How was triangle A translated?
four units left
four units right
six units left
six units right
Answer: D is correct
Step-by-step explanation: Got a 100% on my test
The translation of triangle A is (d) six units right
The translation from triangle A to BTranslation involves changing the position of a shape
From the question, we understand that:
Triangle A represents the pre-imageTriangle A is shifted to the right by 6 unitsThis means that, triangle A was translated by 6 units to the right
Hence, the true statement is (d)
Read more about translation at:
https://brainly.com/question/4289712
the coordinates of ABC are A( 2,3), B(6,6) , and C(7,2) . After a translation , the image of vertex A is (-6,1). a). give the coordinates of B and C after the same translation.
Answer:
B (-2, 4)
C (-1, 0)
Step-by-step explanation:
(x,y) -> (x - 8, y - 2)
A (2, 3) -> (2 - 8, 3 - 2) = A (-6, 1)
B (6, 6) -> (6 - 8, 6 - 2) = B (-2, 4)
C (7, 2) -> (7 - 8, 2 - 2) = C (-1, 0)
Hope this helped and made sense!
Simplify the expression using the distributive property:
-4 (5x – 10)
To use the distributive property, we will multiply each term inside the parenthesis by the term outside of the parenthesis.
-4 * 5x + -10 * -4
-20x + 40
Hope this helps!! :)
Answer:
the result using the distributibe is: -20x +40
canz someone help me this is very confusing
Answer:
$48
75 minutes
Step-by-step explanation:
36/75=0.48 so %1 of her money is 0.48 but if you multiply that by 100 then you get $48, im pretty sure there's an easier way to do that but thats how i got it
18/24=0.75
0.75x100=75
I’m stuck with this question plz help
Answer:
40 in i think if i am wrong sorry
Step-by-step explanation:
5in + 5in = 10 10 * 4 = 40
246.49
All you have to do to find the Circumference is use this formula
pi (3.14) R (radius) squared.
-Ɽ3₮Ɽ0 Ⱬ3Ɽ0
I need some help I've been doing this for thirty minutes and no luck
Answer:
(27x2)1/3 1/3±27×2
Step-by-step explanation:
es la cantidad que me dio al resolverlo
Answer:
its 3x square root i think
Step-by-step explanation:EZ
consider the system composed of the functions f(x), which is graphed below, and g(x)=cube root of x-2. what is the solution of this system? answer is an ordered pair
The sum of 67,42 and (6x-1) is 180 what is the value of x?
Answer:
180 - 109 = 6x-1
6x - 1 = 71
6x = 72
x = 12
Step-by-step explanation:
Simplify the expression using the distributive property:
5 (2x – 3y + 4)
Apply the distributive property. 5 (2x) +5 (−3y) + 5 ⋅ 4
Multiply 2 by 5
10x + 5 ( − 3y ) + 5 ⋅ 4
Multiply −3 by 5 10x − 15y + 5 ⋅ 4
Multiply 5 by 4
Answer: 10x −15y + 20
Tip: The sign "⋅" means multiply
Translations, reflections, and rotations produce a figure that is ______ to the original figure.
Answer:
Congruent.
Step-by-step explanation: