Answer:
80%
Step-by-step explanation:
Evaluate the expression for k = -2
46 + -2k
Enter only the simplified numerical value after substituting the
value for the variable and doing the math.
15. A rectangle has a length of 2x - 1 and a width of 3x + 7. Find the perimeter of this rectangle.
Then find the area of the rectangle.
Answer:
10x + 12 and 6x² + 11x - 7
Step-by-step explanation:
The perimeter (P) of a rectangle is calculated as
P = 2l + 2w ( l is length and w is width )
= 2(2x - 1) + 2(3x + 7) ← distribute parenthesis
= 4x - 2 + 6x + 14 ← collect like terms
= 10x + 12
--------------------------------------------------
The area (A) of a rectangle is calculated as
A = lw
= (2x - 1)(3x + 7) ← expand using FOIL
= 6x² + 14x - 3x - 7 ← collect like terms
= 6x² + 11x - 7
Henrietta decided to learn 768 new magic spells before her final exam. She plans to learn the same number each day. In the first five days, she learns exactly the number of spells she planned to learn. In the remaining days before her exam, Henrietta learns 6 more magic spells each day than planned. When she still had 1 day left before the exam, Henrietta calculated that she learned 844 new magic spells. How many spells did Henrietta plan to learn each day?
Answer:
32
Step-by-step explanation:
x+y=-3
X+Y=7
no solution?
Answer:
no solution
Step-by-step explanation:
x + y cannot be equal to both -3 and 7, so there is no solution.
The width of a rectangle is 4cm less than the length. If each dimension were increased by 3cm, the width of the new rectangle formed would be 2/3 the length of the new rectangle. Find the dimensions of the original rectangle.
Answer:
The original length is 9 cm and the original width 5 cm
Step-by-step explanation:
The area of a rectangle A is given as the product of its' length L and width W.
Given that the width of a rectangle is 4cm less than the length then
W = L - 4
If each dimension were increased by 3cm, then the new
Length
= L + 3
Width
= W + 3
the width of the new rectangle formed would be 2/3 the length of the new rectangle
W + 3 = 2/3(L + 3)
3W + 9 = 2L + 6
3W = 2L +6 - 9
3W = 2L - 3
Recall that W = L - 4
3(L - 4) = 2L - 3
3L - 12 = 2L - 3
3L - 2L = 12 - 3
L = 9 cm
W = 9 - 4
= 5 cm
The distance, y, in miles, traveled by a car in a certain amount of time, x, in hours, is shown in the graph below:
Which of the following best describes the motion of the car shown?
It travels for 1 hour, then stops for 1 hour, and finally travels again for 3 hours.
It travels for 2 hours, then stops for 1 hour, and finally travels again for 2 hours.
It travels for 1 hour, then stops for 2 hours, and finally travels again for 5 hours.
It travels for 2 hours, then stops for 3 hours, and finally travels again for 5 hours.
Answer:
It travels for 1 hour, then stops for 1 hour, and finally travels again for 3 hours.
Answer:
It travels for 1 hour, then stops for 1 hour, and finally travels again for 3 hours
Step-by-step explanation:
From 0 to 1 that's 1 hr then
From 2 to 1 that's 1 hr but no motion so that means that the car stopped
And then ,from 2 to 5 that's means 3 hr travelling
The options are
36
54
72
108
SOMEONE PLSSS HELPP ME
Answer:
Step-by-step explanation:
Each internal angle in a regular pentagon = 180(n - 2) / 5 where n = 5
so < BAE = 540/5 = 108 degrees.
Triangle BAE is isosceles so
m < ABE =( 180 - 108 )/ 2
= 36 degrees.
For the function y = 4x – 1, what is the output when the input is 10?
Answer:
39
Step-by-step explanation:
so the input is x and the out put is y
using this we know that x=10
let plug that into the function
y=4(10)-1
y=40-1
y=39
since y is the output, the output is 39.
Help in 2 minutes I need an answer!!
Answer:
D
Step-by-step explanation:
A and D are the only ones that make sense but, A is incorrect because ice is an example of a solid, a solid isn't an example of ice.
find the solution of given expression
[tex] \sqrt{32 \times 32 \times 4} [/tex]
Answer:
√{32×32×4}=√{32²×2²}=±(32×2)=±64
Answer:
64 will be your answer
Step-by-step explanation:
......
I NEED HELP WITH THIS QUESTION PLZ IF YOUR NICE I WILL THANK YOU ALOT
Answer:
Step-by-step explanation:
Answer:
A = 8,160 ft²
Step-by-step explanation:
A = 1/2h(sum of bases)
h = 102
bases = 75 and 85
A = 1/2(102)(75+85)
= 51(160)
= 8,160 ft²
PLZzzzzzzzxxxxxxxxxxxxxxxxxx
I NEED AN ANSWER ASAP PLS PLS TYSM
The side links of a triangle are 3 m, 4 m common 5 m. Suppose the side links are multiplied by four. Describe the change in perimeter
Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
Side links are : 3m, 4m, 5m
The perimeter of a triangle = (a + b + c)
Perimeter 1= (3 + 4 + 5) = 12m
If the side links are multiplied by 4 :
3*4 = 12 m
4*4 = 16m
5*4 = 20m
Perimeter2 = (12 + 16 + 20) = 48 m
Comparing the perimeters:
Perimeter 1 = perimeter 2
12 = 48
Hence, perimeter also increases by 4 folds
HELLLLPP MEEEE FIND THE AREA
Answer:
12 square feet
Step-by-step explanation:
2*6=12
An adult ticket costs twice as much as a child's ticket. You purchased 5 child tickets and 2 adult tickets and paid $36. Find the price of an adult ticket. Find the price of a child's ticket.
Answer:
adult ticket =$8 child ticket = $4
Step-by-step explanation:
2x =y
2y + 5x =36
4y + X=36
y =8 so X=4
Use the area of the rectangle to find the area of the triangle.
5 ft
10 ft
A. The area of the triangle is 25 square feet, because the area of the
rectangle is 25 square feet.
B. The area of the triangle is 25 square feet, because the area of the
rectangle is 50 square feet.
O C. The area of the triangle is 50 square feet, because the area of the
rectangle is 50 square feet
O D. The area of the triangle is 50 square feet, because the area of the
rectangle is 100 square feet
Answer:
C is the answer
Step-by-step explanation:
sorry if wrong that is the answer i got.
(2x-50)
(x+40)
150°
80°
(x+20)
That 80 is not the correct x
Answer: x=120
Step-by-step explanation:
(2x-50)+(x+40)+150+80+(x+20)+90= 720
4x+330= 720
4x=390
x=97.5
Two students created a tape diagram to represent the following problem: The distance between Rosa's house and her school is 3/4 miles. She ran 1/3 of the way to school.
How many miles did she run Which tape diagram best represents the problem?
1. Tape Diagram A
2. Tape Diagram B
Answer:
Tape diagram b
Step-by-step explanation:
It shows 1/3 out of 3/3 instead of 1/3 of 1/3
The maximum or minimum point of a parabola is called the __________.
a
solution
b
vertex
c
independent variable
d
output
Answer:
B. Vertex
Step-by-step explanation:
The vertex of a parabola is the highest or lowest point, also known as the maximum or minimum of a parabola.
Perry deposits $175 into a simple interest account. The interest rate for the account is 4.25%. What would his final balance be in his account after 3 years?
Answer:
$197.31
Step-by-step explanation:
Given data
Principal= $175
Rate= 4.25%
TIme= 3 years
The expression for the simple interest is given as
A=P(1+rt)
substitute
A= 175(1+0.0425*3)
A= 175(1+0.1275)
A= 175(1.1275)
A= $197.31
Hence the balance will be $197.31
Calculate the value of p and the value of q
Answer:
q= 20 p= 56
Step-by-step explanation:
A angle is also 62°
Answer:
q = 20 degrees
p = 59 degrees
Step-by-step explanation:
to find q, find all the other interior angles within that shape and subtract it from 360
angle E = 180 - 62 = 118
angle b = 90
angle c = 132
360 - (118 + 90 + 132) = 20
angle q = 20 degrees
to find p, add all the other interior angles within that shape and subtract it from 180
angle e = 62 degrees
angle a and b are the same so, take 62 and subtract it from 180 then divide the answer by 2
180 - 62 = 118
118 / 2 = 59
angle a = 59 degrees
angle p = 59 degrees
CAN SOMEONE HELP ME!! DUE IN 5 MINS!! 10 POINTS!!
Answer:
X= 29.5, Y=5
Step-by-step explanation:
If im reading the question correctly it tells you Y is 5, and that X is multiplied by two so half of 59 since we already know that Y is 5 is 29.5
At a birthday party, Vivian counts 15 vanilla ice cream cups and 25 chocolate ice cream cups. Which properties can be used to determine the percent, p, of the ice cream that is chocolate?
Answer:
62.5 %
Step-by-step explanation:
The percentage, p of the ice cream that is chocolate is p = total number of chocolate ice cream cups/total number of ice cream cups × 100%
Given that there are 25 chocolate ice cream cups and 15 vanilla ice cream cups, total number of ice cream cups = 25 + 15 = 40
So, p = total number of chocolate ice cream cups/total number of ice cream cups × 100%
p = 25/40 × 100%
p = 25/4 × 10 %
p = 6.25 × 10 %
p = 62.5 %
PLEASE HELP ASAP!
:(
Abel says (62)3 = 65. Is he correct? Choose the correct response.
Answer:
no
Step-by-step explanation:
P = 2L + 2W, solve for L
Answer:
L = -W + P/2
Step-by-step explanation:
2L + 2W = P (subtract 2W)
2L = -2W + P (divide by 2)
L = -W + P/2
Which statement is true?
y = 12(3)*
Growth Factor is 3
Decay factor is 3
growth factor is 12
decay factor is 12
An angle measures 3.2° less than the measure of its complementary angle. What is the measure of each angle?
Answer:
43.4° and 46.6°Step-by-step explanation:
x - measure of angle
x + 3.2° - measure of its complementary angle
Complementary angles adds to 90°
x + x + 3.2° = 90°
2x = 90° - 3.2°
2x = 86.8°
x = 86.8°÷2
x = 43.4°
x+3.2° = 43.4° + 3.2° = 46.6°
16k³+24k² in factorization
Answer:
8k² (2k + 3)
Step-by-step explanation:
16k³ + 24k²
=8k²(2k + 3)
