Answer:
Step-by-step explanation:
3 a) 6
3 b) 12
3 c) 12
4 a) 4/5
4 b) 10/9
4 c) 17/15
In a class test, +4 marks were awarded for the correct answers and -1 mark for the wrong answers. Student scores 40 marks. If his correct answers were 11, find his wrong answers. *
4 Wrong Answers
[tex]Correct = 11*4=44[/tex]
[tex]Incorrect = Correct - 40 = 4[/tex]
what is 1 half times 2
Answer:
1
Step-by-step explanation:
1/2 x 2 = 1
2 and 2 cancel out, leaving 1/1
Hope that helps! :)
<3 Cin
Answer:
I got the answer one
Step-by-step explanation:
1/2 x 2
2 x 1 = 2 ÷ 2 = 1
Solve the following quadratic equation for all values of x in simplest form.
4(2x-3)^2 + 14 = 34
Answer:
x=3±√5/2
Step-by-step explanation:
Find the gradient of the line passing through the points (4a, -a) and (6a, 5a)
Answer:
3
Step-by-step explanation:
Gradient is also called slope .
=> m = y₂ - y₁ / x₂ - x₁
=> m = 5a + a / 6a - 4a
=> m = 6a / 2a
=> m = 3
What is the value of −9×(14) ÷(−0.75)?
(NO FILES OR LINKS I CAN'T DOWNLOAD THEM
Answer:
Im pretty sure it's 168
Step-by-step explanation:]
9 x 14 = 126
126 ÷ 0.75 = 168
PLEASE IM IN CLASS PLEASE
Answer:
71.88
Step-by-step explanation:
........................
So if 9 of the 32 are women, then everybody left would be a guy. That's 32 - 9 = 23 men. To turn that into a percentage, just divide the number of men by the total amount of people in the class: 23/32 = 71.875% which rounded is 71.88%
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Answer: 9x^2-48x+64
I was wrong originally
I am so sorry
Step-by-step explanation:
(3x-8)(3x-8)
9x^2-24x-24x+64
9x^2-48x+64
In a group of 25 boys , 8 are in the Science League team and 13 in the math League team and 6 in both the teams. How many are not in any team?
-4x + 10 = 42 what is the value of x
Answer:
x=-8
Step-by-step explanation:
Well subtract 10 on both sides
-4x=32
Div ide -4 on both sides
x=-8
Answer:
x = -8
Step-by-step explanation:
-4x + 10 = 42
-10 -10
-4x = 32
/-4 /-4
x = -8
to check work, insert x into the normal equation
-4(-8) + 10 = 42
32 + 10 = 42
Write the equation of a line that passes through the point (0,5) and has a slope of 4/5
Answer:
[tex]m = \frac{4}{5} \\ from \: \: y = mx + c \\ at \: (0,5) \: \: \\ 5 = 0 \times \frac{4}{5} + c \\ c = 5 \\ equation \: is \: \: y = \frac{4}{5} x + 5[/tex]
can someone please help? :)
Answer:
The first step is to find the volume of the two hemispheres.
Step-by-step explanation:
[tex]\boxed{volume \: of \: sphere = \frac{4}{3} \pi {r}^{3} }[/tex]
Since the 2 hemispheres have the same radius, we can simply find the volume of a sphere.
Volume of sphere
[tex] = \frac{4}{3}( \pi)( {12}^{3} )[/tex]
[tex] = 2304\pi \: in^{3} [/tex]
Volume of solid
= volume of cylinder -volume of 2 hemispheres
Let's find the volume of the cylinder.
[tex]\boxed{voume \: of \: cylinder = \pi {r}^{2}h }[/tex]
Volume of cylinder
[tex] = \pi( {12}^{2} )(24)[/tex]
[tex] = 3456\pi \: in^{3} [/tex]
Thus, volume of solid
[tex] = 3456\pi - 2304\pi[/tex]
[tex] = 1152\pi[/tex]
[tex] = 1152(3.14)[/tex]
[tex] = 3617.28 \: in^{3} [/tex]
Answer:
Solution :-Volume of solid = Volume of Sphere - Volume of cylinder
Volume = 4/3πr³ - πr²h
Volume = 4/3 • π • 12³ - π • 12² • 24
Volume = 4/3 • π • 1728 - π • 144 • 24
Volume = 4 • π • 576 - π • 3456
Volume = π(3456 - 2304)
Volume = π(1152)
Volume = 3619.11 in³
[tex] \\ [/tex]
Help brainliest
Write an equation in slope-intercept form of the line that passes through the given points
Answer:
y = - [tex]\frac{4}{3}[/tex] x - 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 3, 3) and (x₂, y₂ ) = (0, - 1) ← 2 points on the line
m = [tex]\frac{-1-3}{0+3}[/tex] = - [tex]\frac{4}{3}[/tex]
The line crosses the y- axis at (0, - 1 ) ⇒ c = - 1
y = - [tex]\frac{4}{3}[/tex] x - 1 ← equation of line
-0.3x2 + 2x + 3
What is this equation in a table ?
Answer:
Here
Step-by-step explanation:
Just pick numbers and substitute it into the equation for x
What is the range of fat grams for the five sandwiches?
A. 15
B. 16
O c. 21
D. 21.2
.
O E. 24
The graph of a system of two linear equations results in two parallel lines.
How many solutions are there for the system?
Answer:
no solutions
Step-by-step explanation:
a "solution" for a system of linear equations is defined as the point(s) of intersection for the two lines.
Parallel lines never touch, so they can never can never intersect
therefore, there are no solutions
hope this helps!
Sample 1: 64, 52, 72, 56, 80, 68, 75, 58, 48, 55
Sample 2: 72, 36, 84, 92, 54, 72, 80, 62, 44, 32
How much greater is the interquartile range in Sample 2 than in Sample 1?
4.8
19
25
28
Answer: sample of 100
:3
for what value of x does the function have an output of -7, given that g(x) = -3x + 8
Answer:
X=5
Step-by-step explanation:
-3x+8=-7
-3x=-15
X=5
The right rectangular prisms are similar.
Which statements are correct? Check all that apply.
3.2 AT
The angles in the smaller prism measure 90
degrees.
The perimeter of the rectangular bases changes by
a factor of 2.
The surface area changes by a factor of 8.
The larger prism has twice the volume of the
smaller prism.
The area of the rectangular bases changes by a
factor of 4.
1.6
-
-
-
-
-
-
10.4
V
0.8
2.2.
Answer:
A)The angles in the smaller prism measure 90 degrees.
B)The perimeter of the rectangular bases changes by a factor of 2.
E)The area of the rectangular bases changes by a factor of 4.
Step-by-step explanation:
The right rectangular prisms are similar.
Which statements are correct? Check all that apply.
A)The angles in the smaller prism measure 90 degrees.
B)The perimeter of the rectangular bases changes by a factor of 2.
C)The surface area changes by a factor of 8.
D)The larger prism has twice the volume of the smaller prism.
E)The area of the rectangular bases changes by a factor of 4.
Solution:
Two polygons are said to be similar if they have the same shape, the ratio of their sides are in the same proportion and they have the same size of angles.
A) Since the bigger prism has angles with measure of 90°, hence the angles in the smaller prism will also measure 90.
Option A is correct.
B) Perimeter of bigger prism base = 2(2.2 + 0.8) = 6
Perimeter of smaller prism base = 2(1.1 + 0.4) = 3
The perimeter of the rectangular bases changes by a factor of 2 (6 / 3).
Option B is correct.
C) Surface area of bigger prism = 2(3.2*0.8 + 2.2*0.8 + 3.2*2.2) = 22.72
Surface area of smaller prism = 2(1.6*0.4 + 1.1*0.4 + 1.6*1.1) = 5.68
The surface area does not change by a factor of 8 (22.72 / 5.68 ≠ 8)
Option C is wrong
D) Volume of bigger prism = 2.2 * 3.2 * 0.8 = 5.632
Volume of smaller prism = 1.1 * 1.6 * 0.4 = 0.704
The larger prism volume is not twice of the smaller prism
Option D is wrong
E) Area of bigger prism base = 2.2*0.8 = 1.76
Area of smaller prism base = 2.2*0.8 = 0.44
The area of the rectangular bases changes by a factor of 4 (1.76 / 0.44 = 4)
Employees at a company are given £1,200 to spend on items for the office.
They decide to buy a coffee machine and as many bean bags as possible.
Bean bags cost £40 with an offer of "Buy at least 15 get 10% off the price."
The coffee machine costs £280.
How much will they have left over from the £1,200?
Answer:
380
Step-by-step explanation:
280 coffe machine
15 bag multiple for 40= 600 - 15%= 540
540+280=820
1200-820=380
Can someone please help me with this ❤️❤️
Answer:
See below for answers
Step-by-step explanation:
y=5(2)ˣ
y=5(2)⁻²=5(1/2²)=5(1/4)=5/4
y=5(2)⁻¹=5(1/2¹)=5(1/2)=5/2
y=5(2)⁰=5(1)=5
y=5(2)¹=5(2)=10
y=5(2)²=5(4)=20
Which number is rational?
/2
10
O
16
Answer:
16
Step-by-step explanation:
Square root of 2 is irrational. This has been proven by the Pythagoreans (there is a simple proof of that).
pi is also known to be irrational although the proof is a bit more demanding.
Square root of 10 can be written as a product of square root of 5 and square root of 2, which themselves are irrational. Any product involving an irrational number is irrational
Square root of 16 = 4. 4 can be written as a fraction 4/1, or 8/2, 16/4, etc. and therefore is rational by definition.
Given g(x)=3x+5g(x)=3x+5, find g(-6)g(−6).
Answer:
Step-by-step explanation:
hello :
g(x)=3x+5
g(−6).=3(-6) +5 = -18+5 = -13
Need help, have to submit this very soon!!
Answer:
see explanation
Step-by-step explanation:
length = [tex]\frac{60}{8}[/tex] = 7.5 in
scale factor = [tex]\frac{image}{original}[/tex] = [tex]\frac{8}{60}[/tex] = [tex]\frac{2}{15}[/tex]
---------------------------------------------------
length = [tex]\frac{192}{4}[/tex] = 48 cm
scale factor = [tex]\frac{omage}{original}[/tex] = [tex]\frac{4}{192}[/tex] = [tex]\frac{1}{48}[/tex]
Mario shot 30 baskets in 6 minutes. Chris shot 48 baskets in 8 minutes. How many more baskets did Chris shoot per minute?
Answer:
6
Step-by-step explanation:
You would first divide 48/8 than you would get 8 baskets per minute.
Answer:
6
Step-by-step explanation:
Mario: 1 minute = 5 baskets and 5 x 6 = 30.
Chris: 1 minute = 6 baskets and 6 x 8 = 48.
This solid shape is made from 5 cubes.
Answer:
what is the question?
Step-by-step explanation:
Elizabeth is going to invest $480 and leave it in an account for 8 years. Assuming the interest is compounded continuously, what interest rate, to the nearest tenth of a percent, would be required in order for Elizabeth to end up with $670?
Answer:
4.2
Step-by-step explanation:
took a bullet for the team
Elizabeth would need an interest rate of 4.25% to make a profit of $670, to the closest hundredth of a percent.
What is compound interest?The interest earned on savings that are computed using both the original principal and the interest accrued over time is known as compound interest. A = P(1 + r/n)^nt, where P is the principal balance, r is the interest rate, n is the number of times interest is compounded annually, and t is the number of years, which is the formula for compound interest.
Given, Elizabeth is going to invest $480 and leave it in an account for 8 years.
from the formula of compound interest
A = P(1 + r/n) ^nt
in our case,
A =670
P = 480
t = 8
Thus,
670 = 480(1 + r)^8
r = 4.25%
Therefore, an interest rate, to the nearest tenth of a percent, would be 4.25% required in order for Elizabeth to end up with $670
Learn more about compound interest here:
https://brainly.com/question/29335425
#SPJ2
Equations
Yes
No
5a -1 = 14
true for a = 3
O ㅁ
100-b2= 80
true for b= 10
32 = 16
true for f = 2
Answer:
yes
No
yes
Step-by-step explanation:
I think it will help you
Evaluate the expression when
x= -2 and y = 4
Expression: x² - 8
у
Answer:
x= -2 , y = 4
then
R/ (-2)² - 8(4)
R/ 4-32
R/ -28
Step-by-step explanation:
Pls help I will give branlist answer on the best one
Don’t explain it just strait up give me the answer for 1,2 and 3
Answer:
Step-by-step explanation:
1. 31,656
2. 32.3%
3. $5,516 roughly per month split evenly if you live paycheck to paycheck
Show all possible arrangements of the letters in the word FRED using a tree diagram. If each of the letters is on a tile and drawn at random , what is the probability that you will draw the letters F-R-E-D in that order?
Answer:
24
Step-by-step explanation:
F R E D
F R D E
F E R D
F E D R
F D E R
F D R E
so for each letter u have 6 so 4 x 6=24