Answer:
36-54i
Step-by-step explanation:
(9+9i)(-1-5i)
v
-9-9×5i-9i-9i×5i
v
-9-45i-9i-45i^2
v
-9-45i-9i-45×(-1)
v
(-9)-45i-9i+(45)
v
36(-45i)(-9i)
v
36-54i
Can someone pls help me pls
Answer:
your fractions will go in order of 1/4, 2/5, 5/8, 4/6
Step-by-step explanation:
a. 2/5 < 1/2 and 4/6 > 1/2 so 2/5 < 4/6
b. 5/8 > 1/2 and 1/4 < 1/2 so 5/8 > 1/4
c. 4/6 > 1/2 and 4/6 < 2/2 and 5/8 > 1/2 and 5/8 < 2/2 and 5/8 ?? cannot see this
Find ef if e (1,-2) and f (7,6)
Combine Like Terms
4. Which expression is equivalent to -9 + 8y + 12 - (-2y) + 1 ?
14y
10y
4+6y
10y+4
Answer:
10y + 4
Step-by-step explanation:
-9 + 8y + 12 - (-2y) + 1
-9 + 8y + 12 + 2y + 1
8y + 2y - 9 + 12 + 1
10y + 4
The radius of a circle is 4.6 millimeters. Find the diameter.
Hi :)
Radius is half the diameter
4.6 mm (2) = 9.2 mm
The diameter of the circle is 9.2 mm.
How do you determine if the numbers are positive or negative?
Answer:
Positive integers have values greater than zero.
Negative integers have values less than zero.
Zero is neither positive nor negative.
Step-by-step explanation:
Answer: if they have got - before them or if the say negative
Step-by-step explanation:
Nora has a flower arrangement with 7 pink flowers, 9 purple
flowers, and 5 white flowers. Which sentence is not true?
The ratio of total flowers to pink flowers is 21: 7
The ratio of white
flowers to purple flowers is 5:9.
The ratio of purple flowers to total flowers is 16 to 21.
Answer:
The ratio of purple flowers to total flowers is 16 to 21 is NOT TRUE because your total is already 21 so it would make no sense for 16 to be in the ratio
Help pls i’ll also rate brainliest
Answer:b
Step-by-step explanation:
It took Emma 3/4 hour to rake the leaves. It took her 1/5 hour more to
weed the garden than it took to rake the leaves. It took her 0.2 hour
more to mow the lawn than it took to weed the garden. Discuss a
strategy you can use to find the answer. Then determine how long it
took her to do all three chores.
9514 1404 393
Answer:
total: 2.85 hours = 2 17/20 hours
Step-by-step explanation:
Strategy: convert all fractions to decimals, determine weeding and mowing times, and add the three times to find the total.
3/4 = 0.75
1/5 = 0.2
Solution:
raking time: 0.75 hours
weeding time: 0.75 +0.2 = 0.95 hours
mowing time: 0.95 +0.2 = 1.15 hours
__
Total time: 0.75 +0.95 +1.15 = 2.85 hours = 2 17/20 hours
_____
Additional comment
You may recognize that 0.95 is the middle of three equally-spaced values. Then the total will be 3×0.95 = 2.85 hours.
Three times the sum of d and r square.
Answer:
3*(d + r^2)
Step-by-step explanation:
Sometimes you read what is needed from front to back and other times it goes from back to front. This is one of those things that goes from back to front.
d and r^2 = d + r^2 In this case and means plus.
Now you deal with the three.
3(d + r^2) which creates the distributive property.
Answer:
3*(d + r^2) is correct answer
Step-by-step explanation:
[tex] {x}^{4} - 16 = [/tex]
What is the answer and steps
Answer:
[tex](x - 2) \times (x + 2) \times ( {x}^{2} + 4)[/tex]
Step-by-step explanation:
[tex] {x}^{4} - 16[/tex]
➡️ [tex] {x}^{2 \times 2} - 16[/tex]
➡️ [tex] {x}^{2 \times 2} - {4}^{2} [/tex]
➡️ [tex]( {x}^{2} {)}^{2} - {4}^{2} [/tex]
➡️ [tex]( {x}^{2} - 4) \times ( {x}^{2} + 4)[/tex]
➡️ [tex](x - 2) \times (x + 2) \times ( {x}^{2} + 4)[/tex]
Find the lower quartile for the data. {66, 70, 75, 72, 67, 68, 65, 69, 68}
A. 66.5
B. 69
C. 69.5
D. 70
Answer:
66.5 is the answer thanks
Please help
Solve the equation.
Give your simplified answer as an improper fraction.
7(x + 1) = 1 – 2(5 – x)
? ]
W
Answer:
-16/5
Step-by-step explanation:
7(x+1)=1-2(5-x)
7x+7=1-10+2x
7x-2x=1-10-7
5x = -16
x = -16/5
Answer: [tex]\huge {x = -\frac{16}{5} }[/tex]
Step-by-step explanation:
Given equation
7 (x + 1) = 1 - 2 (5 - x)
Expand parentheses and apply the distributive property
7x + 7 = 1 - 10 + 2x
Combine like terms
7x + 7 = -9 + 2x
Subtract 2x on both sides
7x + 7 - 2x = -9 + 2x - 2x
5x + 7 = -9
Subtract 7 on both sides
5x + 7 - 7 = -9 - 7
5x = -16
Divide 5 on both sides
5x / 5 = -16 / 5
[tex]\boxed{x=-\frac{16}{5} }[/tex]
Hope this helps!! :)
Please let me know if you have any questions
5.6 write each decimal as a fraction or a mixed number
Answer:
28/5
plsss mark me brainliestt
Step-by-step explanation:
5.6=56/10
28/5
Solve for x and find the value of the unknown angle measures.
1. x=
2. m=
3. n=
4. p=
Answer:
x=20°
m=50°
n=68°
p=50°
Step-by-step explanation:
Here,we know that,
i)n=68°[being vertically opposite angle]
ii)p+62°+n=180°[being straight angle]
or, p+62°+68°=180°
or, p+130°=180°
or, p=180°-130°
thus, p=50°
iii) m=p[being vertically opposite angle]
thus, m=50°
iv)(2+3x)°=62°[being vertically opposite angle]
or, 3x°=62°-2°
or, 3x°=60°
or, x=60°÷3°
thus, x=20°
Hence, the value of x=20°, m=50°, n=68° and p=50°.
Solve 4.5 divided by 0.9
Answer:
4.5 / 9 = 1/2
1. In some music, a whole note equals one measure, a quarter note
equals , of one measure, and an eighth note equals of one
measure. If one measure has two quarter notes and an eighth note,
what notes can make up the rest of the measure? Write and solve an
equation.
Answer:
3 eighths are needes to make up the rest of the measure.
Step-by-step explanation:
1/4 + 1/4 + 1/ 8 + x = 1
2/4 + 1/8+x=1
4/8 + 1/8+x=1
5/8 + x=1
x=1 - 5/8
x=3/8
We need three eights.(Because 3/8=1/8+1/8+1/8 and 1/8 represents an eights)
5 1/6•(-2/5)=
Answer as a fraction
could someone pleaseeeeee help
whyyyyyyyyyyyyyyyyyy
whyyyyyyy
This cube and cuboid have the same volume. The length, width and height of the cuboid are all different whole numbers. Suggest what they might be. 4 cm 4 cm width 4 cm height length
Answer:
4hdunzkzmfindudjdkzmd
Which of the following functions is odd?
PLZ HELP URGENT
Answer: Choice D
Explanation:
This is because all of the exponents are odd for this polynomial. It might help to think of that 4x as 4x^1.
The perimeter of a triangle is 143cm, The sides are x-6, x-6, and 25. Find the length of each side of the triangle
Answer:
12
Step-by-step explanation:
SOLUTION:
In a right triangle, the sum of the squares of the
lengths of the legs is equal to the square of the length
of the hypotenuse. The length of the hypotenuse is 13
and the lengths of the legs are 5 and x.
Reading - Word - Level 1
Vocabulary
Page 21
*
Safety is the number one priority at our trampoline parks.
That's why every session is supervised by our trained staff.
However, we cannot do it alone. We ask that parents and
guardians make sure their children follow our rules.
Informative
Persuasive
Answer:
crisp, clean, formal, readable
Step-by-step explanation:
You’re help Is greatly appreciated!! I will mark BRAINLIEST as well
Answer:
1. -4/7
2. 4/3
3. x^2 + 16x + 63
4. x^2 + 19x + 90
Step-by-step explanation:
1. (1, 8) and (8, 4)
slope = m = (8 - 4)/(1 - 8) = -4/7
2. (2, 4) and (5, 8)
slope = m = (8 - 4)/(5 - 2) = 4/3
3. (x + 9)(x + 7) =
= x^2 + 7x + 9x + 63
= x^2 + 16x + 63
4. (x + 10)(x + 9) =
= x^2 + 9x + 10x + 90
= x^2 + 19x + 90
Write the complete answer on each line
1. If a is a subset to B and B is the subset of A, what Else is true about sets A and B
2. List all of the the subsets of {a,b,c}
3. How many subsets are there of {a,b,c,d,e,f}
Answer:
Step-by-step explanation:
1. If A is a subset of B and B is a subset of A then A and B must be equal.
2. The subsets of {a,b,c} are
{ } (emptyset}, {a}, {b}, {c}, {a,b}, {a,c}, {b,c}, {a,b,c}
3} Since {a,b,c,d,e,f} has 6 elements then there are [tex]2^6[/tex] subsets.
which expressionis equivalentto 83,100 in expand formusing power of 10?
Answer:
8.3100 x [tex]10^{4}[/tex]
Explanation:
83100 in this form would be 8.3100 x [tex]10^{4}[/tex] because you can see 4 digits after the decimal point which would be raised to the 4th power of 10.
Thajus earned $19 babysitting on Saturday and $8 babysitting on Sunday. By how much did his earnings on
Saturday exceed his earnings on Sunday?
O $1
O $11
O $27
O $30
Answer:
11
Step-by-step explanation:
exceed mean how much and the question is asking how much did he get more so yust 19 -8=11
Which of the following correctly uses exponents to write "6 factors of 2"?
26
6.2
12
62
Answer:
A. 26
Step-by-step explanation:
The base number (the first number) is what will be multiplied and the exponent is how many times you're multiplying the number, so for this it would be
2 x 2 x 2 x 2 x 2 x 2
A student's cost for last semester at her community college was $2800. She spent $308 of that on books. What percent of last semester's college costs was spent on
books?
% of last semester's college costs was spent on books.
Translate into a variable expression. y decreased by 30
Answer:
y-30
Step-by-step explanation:
If y is decreased by 30, then you are saying y-30.
For what values of k will the equation 4x² + 8x + k = 0 have two real solutions?
Answer:
k < 4
Step-by-step explanation:
Given a quadratic equation in standard form
ax² + bx + c = 0 ( a ≠ 0 )
Then the discriminant Δ = b² - 4ac informs us about the nature of the solutions.
• If b² - 4ac > 0 then 2 real and distinct solutions
• If b² - 4ac = 0 then 1 real and repeated solution
• If b² - 4ac < 0 then no real solutions
4x² + 8x + k = 0 ← is in standard form
with a = 4, b = 8 , c = k , then
b² - 4ac = 8² - (4 × 4 × k) = 64 - 16k
For two real solutions
64 - 16k > 0 ( subtract 64 from both sides )
- 16k > - 64
Divide both sides by - 16, reversing the symbol as a result of dividing by a negative quantity.
k < 4
Then any value less than 4 will ensure the equation has two real solutions