Answer:
The top is positive and the bottom is negative put it like this 0.2 and the rest to get an idea
the person above this is correct
Which of these expressions is equal to 2 + √-36?
a. 2 - 36i
b. 2 + 36i
c. 2 - 6i
d. 2 + 6i
Answer:
D
Step-by-step explanation:
i = √-1 , as number inside a √ cannot be a negative number, i is an imaginary number
2 + √-36
= 2 + √(36×-1)
= 2 + 6i, d
Erica wanted to conduct a survey to find the most popular ice cream flavor sold at the local ice cream shop. She decided to survey all the girls present in the shop. Is this sample representative of the population?
A. Yes, it asks all the girls present in the shop
B. Yes, the sample is restricted within the shop
C. No, the sample is only about ice cream flavors
D. No, it asks only the girls in the shop
Answer:
D
Step-by-step explanation:
Answer: D. No, it asks only the girls in the shop
Erica's survey leaves out the boys which means the boys are completely under-represented while the girls are over-represented. The population consists of boys and girls. This means the sample needs to have the same proportional mix of those genders (ie around 50% for each) if you want the sample to be representative of the population.
A Rectangular has area 12a^2 and perimeter 14a what are the dimensions of this Rectangular?
9514 1404 393
Answer:
3a by 4a
Step-by-step explanation:
For dimensions L and W, the area and perimeter are ...
A = LW = 12a^2
P = 2(L+W) = 14a
Using the second equation, we can find L:
L +W = 7a . . . . . divide by 2
L = 7a -W
Substituting into the area formula gives the quadratic ...
(7a -W)(W) = 12a^2
W^2 -7aW +12a^2 = 0 . . . . arrange in standard form
(W -3a)(W -4a) = 0 . . . . . . . factor (find factors of 12 that total 7)
Then we have the two solutions ...
W = 3a, L = 4a
W = 4a, L = 3a
The rectangle dimensions are 3a by 4a.
5% of the aliens are green. If there are
40 aliens, how many are green?
Answer:
2 aliens are green.
Step-by-step explanation:
0.05 * 40 = 2
I need 7/5 renamed to a fraction
Answer:
Step-by-step explanation:
the simpliest form is [tex]1\frac{2}{5}[/tex]
It already is a fraction. If you need it simplified, it would be 1 2/5.
---
hope it helps
A model railroad set was originally priced at $60, but Oliver waited to buy it until the model railroad set was on sale for 50% off. If he paid 10% sales tax on the sale price, how much did he pay in total?
$
Answer:
$33
Step-by-step explanation:
60 * 50% = 30
30 *10% = 3
30 + 3 = $33
Answer:
Step-by-step explanation:
$33
Step-by-step explanation:
60 * 50% = 30
30 *10% = 3
30 + 3 = $3
Solve the equation.
Show your steps.
3x + 265 = 4
Answer:
x = -87
Step-by-step explanation:
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
PEMDAS is the order of operation and stands for:
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
~
First, subtract 265 from both sides of the equation:
3x + 265 (-265) = 4 (-265)
3x = 4 - 265
3x = -261
Next, divide 3 from both sides:
(3x)/3 = (-261)/3
x = -261/3
x = -87
x = -87 is your answer.
~
Answer:
If you're looking for the value of x, it's -87.
Step-by-step explanation:
1. Subtract 265 from both sides
3x+265-265 = 4-265 = 3x = -261
2. Divide by 3 to get the variable by itself
3x/3 = -261/3. = -87
x = -87
Hope this helps
tell whether x and y are proportional
Answer:
Yes b/c y = 12x
Step-by-step explanation:
y = 12x
Find each value.
p(4,4)
p(6,3)
p(9,5)
Answer:
the probability: (4,4) it is certain to happen. (6,3) it is not likely nor unlikely
because it is half. (9,5) it is likely to happen.
Step-by-step explanation:
The geometry graph above is a (—)
Answer:
square
Step-by-step explanation:
Why are 4(5) and 20 equivalent expressions?
Answer:
because 4 to the power of 5 is 5 x 5 x 5 x 5 and that equals 20
and the next number is 20
Step-by-step explanation:
PLEASE HELP!! I'll give the correct answer brainliest and 5 stars
Answer:
C 150/30 (Your answer)
Step-by-step explanation:
bc 150 BLUE marbles and 30 RED marbles so ur right
Answer:
The answer is C
Step-by-step explanation:
Its asking for the ration of BLUE to RED. In ratio you always do the first unit/object so its asking for blue then red so its 150(blue/30(RED)
The value of a bank account, B, after x years is represented by the equation B = 1000(1+.014)x. To the nearest penny, how much is the account worth after 15 years?
Answer:
1232 penny
Step-by-step explanation:
Given the value of a bank account, B, after x years is represented by the equation B = 1000(1+.014)^x.
To determine the account worth after 15 years, we will substitute x = 15 into the expression as shown;
B = 1000(1+.014)^x.
B = 1000(1+.014)^15
B = 1000(1.014)^15
B = 1000(1.2319)
B = 1231.9penny
Hence the value after 15years is 1232 penny (to the nearest penny)
Find the inequality represented by the graph
Answer:
y > -2/3 x + 3
Step-by-step explanation:
First we find the equation of the dashed line.
y = mx + b
We see b = 3.
The slope is -2/3.
The equation of the line is
y = -2/3 x + 3
The line is dashed, not solid, and the shading is above the line, so the inequality is
y > -2/3 x + 3
On Anti-Bullying day, 378 Chenery Middle School (CMS) students wore Orange. If this represents 45% of the student population, how many students are enrolled at CMS?
I need help finding the slope of the graph?
Answer: y=4x
Step-by-step explanation:
Find 2 random points
here I chose 0,0 and 2,8
8-0/2-0 = 4 slope is 4
no y intercept since its zero
y = 4x
11 = 7 – 5x
Please help!
Answer:
the answer is x=-4/5
Step-by-step explanation:
hoped I helped:)
Answer:
-4/5
Step-by-step explanation:
11=7+-5x
11=-5x+7
-5x+7=11
-5x+7-7=11-7
-5x=4
-5x/-5=4/-5
Cherlyn moves houses her old house is 3 kilometers from her new house how many meters is it from the old house to the new house?
Answer:
3,000 meters
Step-by-step explanation:
1 Kilometer = 1,000 meters
1,000 meters x 3 Kilometers = 3,000 meters
Hopefully this helps :3 Sorry if wrong :( plz mark brainiest if correct :D Your bootiful/handsome! Have a great day luv <3
-Bee~
the measures of the side of a triangle are 4√2 cm, 4√2 cm qnd 8√2 cm. what is the perimeter of the triangle?
Answer:
[tex]16\sqrt{2}[/tex]
Step-by-step explanation:
Add up all the sides to get the perimeter:
[tex]4\sqrt{2} + 4\sqrt{2} +8\sqrt{2} = 16\sqrt{2}[/tex]
solution for the inequality 6x +9 ≤ 27
Answer:
6x + 9 = 27
-9 -9
6x = 18 Now divide both sides by 6
/6 /6 so the answer is 3
Step-by-step explanation:
Help please
Brainiest answer to whoever is correct
Answer:
Required amount of aluminium foil = 522.80 [tex]in^{2}[/tex]
Step-by-step explanation:
The shape of the large Hershey kisses can be compared to that of a cone. So that;
the surface area of the kisses = [tex]\pi[/tex][tex]r^{2}[/tex] + [tex]\pi[/tex]rl
Let the slant height be represented by l. Applying the Pythagoras theorem;
[tex]l^{2}[/tex] = [tex]10^{2}[/tex] + [tex]8^{2}[/tex]
= 100 + 64
= 164
l = [tex]\sqrt{164}[/tex]
l = 12.81 in
Thus,
surface area of the kisses = (3.14 x [tex]8^{2}[/tex]) + (3.14 x 8 x 12.81)
= 200.96 + 321.7872
= 522.7472
surface area of the kisses = 522.75 [tex]in^{2}[/tex]
Thus, the amount of aluminium foil required to wrap the kisses is 522.80 [tex]in^{2}[/tex].
Write the following decimal number in it’s equivalent fraction form show all work for full credit. 0.8
Answer:
0.8=8/10=4/5
Step-by-step explanation:
I don't know if this is what you wanted.
Which one of the following equations represents a circle with its center of origin?
A) x^2 + y^2 = 5
B) x^2 + y = 25
C) x + y = 5
D) x/2 + y/2 = 25
Answer:
A) x² + y² = 5Step-by-step explanation:
The equation of the circle:
(x - h)² + (y - k)² = r²The center is (h, k)
Wen the center is the origin we have, h = 0, k = 0:
x² + y² = r²The only equation in same format is the first one
hi, i need help with Solve 18>12+x. Graph the solution.
Answer:
x < 6
Step-by-step explanation:
18 > 12 + x
Switch sides:
12 + x < 18
Subtract 12 from both sides:
12 + x - 12 < 18 - 12
x < 6
The solution of the inequality is,
⇒ x < 6
And, Graph is shown in image.
What is mean by Inequality?A relation by which we can compare two or more mathematical expression is called an inequality.
Given that;
The inequality is,
⇒ 18 > 12 + x
Now, We can solve the inequality as;
⇒ 18 > 12 + x
Switch sides:
⇒ 12 + x < 18
Subtract 12 from both sides:
⇒ 12 + x - 12 < 18 - 12
⇒ x < 6
Thus, The solution of the inequality is,
⇒ x < 6
Learn more about the inequality visit:
https://brainly.com/question/25944814
#SPJ3
Need to pass this semester so please help
Х
1
2
3
4
Y
5
9
13
17
st is tangent to q find the value of r
Answer:
r = 7
Step-by-step explanation:
The angle between the tangent ST and the radius QS at the point of contact is 90° , then
Δ QST is right
Using Pythagoras' identity in the right triangle
(r + 18)² = r² + 24² , that is
r² + 36r + 324 = r² + 576 ( subtract r² from both sides )
36r + 324 = 576 ( subtract 324 from both sides )
36r = 252 ( divide both sides by 36 )
r = 7
6. Given that g(x) is the inverse of f(x)...
a. f(x) = 3x + square root x + 3; find g(2)
b. f(x) = e^x; find g'(e3)
Answer:
sub 2 lazarbeam... yeet yeet yeet
5200 people attend a football match. It takes 10 minutes for all of them to leave the stadium. At what rate do they leave? Include the correct units in your answer.
can you plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz help me plz
Answer: the top one is 20cm
The bottom one is 25
Step-by-step explanation:
The formula for a triangle is 1/2 (base) x (height) so in this case 1/2x8x5=20 and 1/2x5x10=25
Answer:
1. 20 2. 25
Step-by-step explanation:
Formula for triangle: Length times width divided by 2.
1. 8 x 5 / 2 = 20
2. 5 x 10 / 2 = 25
Hope this helped! If it did, please mark it brainliest! It would help a lot! Thanks! :D