Answer:
-6x - 19y - 56Step-by-step explanation:
Simplify:
-8(2x) + 5(2x - 12) + -2(5y - 2) + (-3) (3y) =-16x + 10x - 60 - 10y + 4 - 9y = x(-16 + 10) + y(-10 - 9) + (-60 + 4) = x(-6) + y(-19) + (-56) =-6x - 19y - 56Answer:
−6x−19y−56
Step-by-step explanation:
−8(2x)+5(2x−12)+−2(5y−2)+(−3)(3y)
Multiply −8 and 2 to get −16. Multiply −3 and 3 to get −9.
−16x+5(2x−12)−2(5y−2)−9y
Use the distributive property to multiply 5 by 2x−12.
−16x+10x−60−2(5y−2)−9y
Combine −16x and 10x to get −6x.
−6x−60−2(5y−2)−9y
Use the distributive property to multiply −2 by 5y−2.
−6x−60−10y+4−9y
Add −60 and 4 to get −56.
−6x−56−10y−9y
Combine −10y and −9y to get −19y.
−6x−56−19y
Evaluate (98 x 102) by using suitable identities.
Answer:
The answer is 9996
Step-by-step explanation:
Using the identity (x+a)(x+b) = x ^2 +(a+b)x+ab
Writing 102 as 100+2 and 98 as 100−2
Hence (100+2)(100−2) = 100 ^2 +[2+(−2)]100+(2)(−2)
= 10000+(0)100−4
= 9996
The answer is 9996
Answer:
9996
Step-by-step explanation:
by using suitable identities ;
(98) × (102)(100 - 2) × (100 + 2)10000 - 49996identity used here is :
[tex](a + b) \times (a - b) = (a {}^{2} - b {}^{2} )[/tex]
..........................
find sin A
a 4/5
b 5/4
c 3/5
d 5/3
e 3/4
f 4/3
Answer: 4/5 (first choice)
=========================================
Work Shown:
sin(angle) = opposite/hypotenuse
sin(A) = BC/AC
sin(A) = 24/30
sin(A) = (6*4)/(6*5)
sin(A) = 4/5
1/4 of the sum 18 and 6
Answer:
18+6=24 then 24/4=6
Step-by-step explanation:
Graph the equation using the slope and y-intercept
y = 2x - 4
angle sum theory
PLS HELP!!
A)74°
B)92°
C)83°
D)82°
Answer:
the answer must be 74 or 82
Answer:
It's 58
Step-by-step explanation:
That's the answer
Can someone help
Please
Answer:
length× breadth = 20× 5 =100
At the football game, 3 hamburgers and 6 soft drinks cost $27, and 3 hamburgers and 3 soft drinks cost $18. Which two equations can be used to determine the price of a hamburger and the price of a soft drink?
Let x represent the cost of a hamburger and y represent the cost of a soft drink.
Answer:
Let be "x" the cost in dollars of a hamburger and "y" the cost in dollars of a soft drink.
The cost of 4 hamburguers can be represented with this expression:
4x4x
And the cost of 6 soft drinks can be represented with this expression:
6y6y
Since the total cost for 4 hamburgers and 6 soft drinks is $34, you can write the following equation:
4x+6y=344x+6y=34 [Equation 1]
The following expression represents the the cost of 3 soft drinks:
3y3y
According to the information given in the exercise, the total cost for 4 hamburgers and 3 soft drinks is $25. Then, the equation that represents this is:
4x+3y=254x+3y=25 [Equation 2]
Therefore, the Equation 1 and the Equation 2 can be used to determine the price of a hamburger and the price of a soft drink
Answer:
3x + 6y = 27
3x + 3y = 18
x = $3, y = $3
Step-by-step explanation:
I will solve by using the elimination method.
3x + 6y = 27
3x + 3y = 18
Subtract top equation by bottom.
3x + 6y = 27
- (3x + 3y = 18)
_____________
0 + 3y = 9
3y = 9
y = 3
Plug y in for three
3x + 6*3 = 27
3x + 18 = 27
3x = 9
x = 3
So, your solution is x = $3, y = $3
Noah ran 54 miles in 9 days.The graph relating Greta’s total distance to the number of days passes through the points (0,0) and (5,45).Who ran more miles per day?
Answer: Noah ran more miles
Step-by-step explanation:
the breadth of a rectangular handkerchief is 10 cm shorter than its length .if the perimeter of the handkerchief is 100cm. find its length and breadth..
plz help me
Step-by-step explanation:
Perimeter = 2(l+b)
2(x+x-10)=100cm
(x+x-10)= 100 divided by 2
(x+x-10)=50
2x-10=50
2x=50+10,60
x=60 divided by 2
X =30
Length = 30cm
Breadth= 30-10= 20cm
PLEASE MARK MY ANSWER AS THE BRAINILIEST!
Answer:
solution given:
length[l]=xcm(let)
breadth [b]=(x-10)cm
perimeter of rectangle [P]=100cm
we have
P=2[l+b]
100cm=2[x+x-10]
2x-10=[tex] \frac{100}{2} [/tex]
2x=50+10
x=[tex] \frac{60}{2} [/tex]
:.x=30cm
So
length[l]=x=30cm
breadth [b]=(x-10)=30-10=20cm
(b) A private club grew by 7 members each week for 42 weeks. What was the total change in the
club's size?
members please help
Answer:
294
Step-by-step explanation:
42×7=294
The total change was the capacity.
The heights of Russian dolls are in the ratio 6 : 8 : 9. In a set of dolls, the height of the middle doll is 12 cm. What is the height of the smallest doll
Answer:
Step-by-step explanation:
As 6 is 2 less than 8 so height of smallest doll would be 10cm
Ignore my 1st one!
Find the value of x.
Answer:
x=9
Step-by-step explanation:
Use Pythagorean Theorem -> a^2 + b^2 = c^2
a^2 + b^2 = c^2
(12^2) + b^2 = (15^2)
144 + b^2 = 225
225 - 144 = 81
√81 = 9
x = 9
Find the unknow measures of y and x.
9514 1404 393
Answer:
x = 2 m
y = 30°
Step-by-step explanation:
The side lengths of ΔDEF are 3/9 = 1/3 of those of ΔABC.
x = DF = 1/3(AB) = (1/3)(6 m)
x = 2 m
__
Angle measures of ΔDEF are the same as those of the corresponding angles of ΔABC.
y = ∠B = ∠E = 30°
y = 30°
Solve:
5x-2y = 6
5x-2y = -4
Please show your work or explain what method you used to solve it (substitution, graphing, or elimination)
Mike has $72 and he needs to buy some apples. Which of these equations would represent mike's situation of the apples cost $0.60 per apple and he wanted to find out how many apples he could buy
Answer:
120 apples
Step-by-step explanation:
Given data
Total amount= $72
Cost per apple = $0.60
The number of apples = Total amount/Cost per apple
substitute
The number of apples= 72/0.6
The number of apples= 120 apples
Hence he will buy 120 apples
PLSPSPSLS HELP MATHHH GRADE 5-6
Mr. Greene
purchased 6 movie
tickets for $57.30.
How much does
one movie ticket
cost?
Answer:
Each ticket costs $9.55
Step-by-step explanation:
You divide 57.30 by the number of tickets(6).
57.30/6 = 9.55
Answer:
6 movie = $57.30
1 movie = $x
57.30 ÷ 6
= $9.55 for one movie ticet
Step-by-step explanation:
PLEASE HELP ASAP!!!!!!
Answer:
No
Step-by-step explanation:
Because after u substitute the 15 for the x u get 38>42 which is incorrect
what does a square pluse be square
Answer:
a squared + b squared = c square
Step-by-step explanation:
In this formula c represents the length of the hypotenuse a and b are the legnths of the other two sides. if two sides of a right triangle are known you can subsitute these values in the formula to find the missing side
The ratio of the perimeter of a square A and square B is 4:3. The side of square B is 3 m less than the side
of square A. What is the length of the side of square A?
please answer
Answer:
x = 12
Step-by-step explanation:
x = length of side of square A
'x-3' represents length of side of square B
Perimeter of square A = 4x
Perimeter of square A = 4x - 12
we can set up the following proportion based on ratio of 4:3
4x / 4 = 4x - 12 / 3
cross-multiply:
4(3x) = 4(4x-12)
12x = 16x - 48
-4x = -48
x = 12
Solve these simultaneous equations: 3x = y and x = y - 16
Answer:
x=8
y=24
Step-by-step explanation:
3x=y
x=y-16
Substitute y for 3x
x=3x-16
Add 16 to each side
x+16=3x
Subtract x
16=2x
Divide each side by 2
8=x
y=3x=3×8=24
y=24
Here we have been given with two equations and we have to calculate the values of x and y. So we would be using substitution method for it.
3x = y (Equation No 1)x = y - 16 (Equation No 2)Here we can clearly see that value of y is 3x. So we would substitute it in Equation No 2.
>> x = y - 16
>> x = 3x - 16
>> x - 3x = -16
>> -2x = -16
>> 2x = 16
>> x = 16 / 2
>> x = 8
★ Finding out value of y:-
>> y = 3x
>> y = 3 (8)
>> y = 3 × 8
>> y = 24 [tex] \: [/tex]
What is the gcf of 10m^3 +45m
Answer:
ITS 1
10 = 2 • 5
3 = 3
45 = 32 • 5
Answer:
GCF of 40 and 60
Step-by-step explanation:
Solution We first express 20 and 60 as the product of prime numbers 40 = 2 × 2 × 2 × 5 60 = 2 × 2 × 3 × 5. The common factors are 2 × 2 and 5.
Gary is building a new L-shaped desk for his room. He wants to make sure it
is large enough to hold all his supplies. The dimensions of the desk, in feet,
are shown in the diagram. What is the area of the desk?
9 ft
2 ft
6 ft
6 ft
4 ft
3 ft
A. 24 square feet
B. 36 square feet
C. 30 square feet
D. 54 square feet
Answer:
30ft2. so its c
Step-by-step explanation:
its 30
quiz verified
If 12 cups of pineapple juice are used with 20 cups of orange juice, will the recipe taste the same?
Explain your reasoning,
Answer:
No, It will not taste the same
Step-by-step explanation:
12 cups of pineapple juice should be mixed with 15 cups of Orange juice
Okay I don't know this one either so uh help please
9514 1404 393
Answer:
(a) A'(-2, 1), B'(-4, -3), C'(-7, 0)
Step-by-step explanation:
If X is the center of rotation, the coordinates of point P are transformed like this:
P' = -(P -X) +X
P' = 2X -P
(x, y) ⇒ (2(-5) -x, 2(3) -y)
(x, y) ⇒ (-10-x, 6-y)
__
Your points are transformed to ...
A(-8, 5) ⇒ (-10-(-8), 6-5) = A'(-2, 1)
B(-6, 9) ⇒ (-10-(-6), 6-9) = B'(-4, -3)
C(-3, 6) ⇒ (-10-(-3), 6-6) = C'(-7, 0)
These coordinates match the first choice.
what is the circumference if the radious is 20
Answer:
125.6
Step-by-step explanation:
Circumference = 2 x pi x r (radius)
= 2 x 3.14 x 20
= 125.6
Answer: 120
Step-by-step explanation: 20x3x2
20x3=60
60x2=120
the price of a new car is $48,000. If the sales tax rate is 1/3 then how much sales tax is being charged? What is the total cost for the car including tax?
which number is halfway between 318970 and 719070
Answer:
it is 519020
Step-by-step explanation:
Which point is on the graph of f(x)=2x5^x
Pleaseee helppp answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!
Answer:
perimeter of any figure can be define the sum of all sides.
perimeter of the figure=33.4ft + 6.5ft + 9ft + 9ft + 9ft + 6.5ft + 7.7ft + 16.7ft
perimeter of the figure=97.8 ft.