Answer:
positive 42
Step-by-step explanation:
because to negatives make a positive and then you would multiply the two by eachother because they are directly beside eachother and then you do 7*6 which equals to 42 I really hoped this helped you
(8-4i)(5i-2)
I need the steps
Answer:
[tex]\huge{\boxed{\sf{ -20i^{2} + 48i - 16}}}[/tex]
Step-by-step explanation:
( 8 - 4i ) ( 5i - 2 )
Use the distributive property to multiply each term of the first binomial by each term of the second binomial.
⇒[tex]8 ( 5i - 2 ) - 4i ( 5i - 2 )[/tex]
⇒[tex]40i - 16 - 20i^{2} + 8i[/tex]
Combine like terms.
Like terms are those which have the same base.
⇒[tex]- 20i^{2} +40i+ 8i - 16[/tex]
⇒[tex]-20i^{2} + 48i - 16[/tex]
Hope I helped!
Best regards!
~TheAnimeGirl
can someone help me out on this please?
Answer:
Alexis: 2.5x
Gary: x
James: x + 18
Total: (2.5x) + (x) + (x + 18)
= 4.5x + 18
Bonus:
4.5x + 18 = 1206
4.5x = 1188
x = 264
Alexis: 2.5(264) = 660
Gary: 264
James: 264 + 18 = 282
solve for x in geometry
Answer:
x = 3
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
28x - 2 is an exterior angle of the triangle, thus
28x - 2 = 15x - 3 + 40 = 15x + 37 ( subtract 15x from both sides )
13x - 2 = 37 ( add 2 to both sides )
13x = 39 ( divide both sides by 13 )
x = 3
Which of the following is the solution set of the
problem?
(-infinity, -3)
(-infinity, -3]
[-3, infinity)
(-3, infinity)
Answer:B
Step-by-step explanation:
Got it correct
Assume that y varies inversely with x. If y=1/3 when x=1/2, find y when x=1/4.
Answer:
y = [tex]\frac{2}{3}[/tex]
Step-by-step explanation:
Given that y varies inversely with x then the equation relating them is
y = [tex]\frac{k}{x}[/tex] ← k is the constant of variation
To find k use the condition y = [tex]\frac{1}{3}[/tex] when x = [tex]\frac{1}{2}[/tex] , thus
[tex]\frac{1}{3}[/tex] = [tex]\frac{k}{\frac{1}{2} }[/tex] = 2k ( divide both sides by 2 )
k = [tex]\frac{1}{6}[/tex]
y = [tex]\frac{1}{6x}[/tex] ← equation of variation
When x = [tex]\frac{1}{4}[/tex] , then
y = [tex]\frac{1}{6(\frac{1}{4}) }[/tex] = [tex]\frac{1}{\frac{3}{2} }[/tex] = [tex]\frac{2}{3}[/tex]
What is the value of k
Answer:
k = 5
Step-by-step explanation:
3x + k
im going to replace the x with the numbers that go there
3 x 1 + k = 8
3 x 1 = 3
8 - 3 = 5
k = 5
3 x 3 + k = 14
3 x 3 = 9
14 - 9 = 5
k = 5
3 x 5 + k = 20
3 x 5 = 15
20 - 15 = 5
k = 5
what types of function do you see in the following graph?
constant and absolute value
9 - 3 divided by 1/3 + 1 = ?
Answer:
1
Step-by-step explanation:
A bag of potato chips contains 0.96 grams of sodium. If the bag is split into 8 equal servings, how many grams of sodium will each serving contain? Extension: What other ways can the bag be divided into equal servings so that the amount of sodium in each serving has two digits to the right of the decimal and the digits are greater than zero in the tenths and hundredths place?
Answer:
.12g of Na
Step-by-step explanation:
What is the coordinate of M?
Answer:
(3, 2)
Step-by-step explanation:
no explanations; just use the graph on the picture.
A rental car agency charges a flat fee of $111.00 plus $29.00 per day to rent a certain car. Another agency charges a fee of
$86.00 plus $34.00 per day to rent the same car.
Find the number of days for which the costs are the same. Round your answer to the nearest whole number of days.
Answer:4
Step-by-step explanation:
110 + $29= 139
86 + 34= 120
bascially 34 - 29 = 5
how many times will we have to plus 5 on the bottom numbers to make 139
Its 4
Hope this helps
Please mark brainliest i need :)
Bobby has a sister named Abbey. Bobby’s sister Abbey is 4 years older than 1/3 of Bobby’s age. a) Write an expression for Abbey’s age in terms of Bobby’s age, b. b) How old is Bobby if Abbey is 7 years old?
Answer:
Step-by-step explanation:
a=1/3b + 4
7=1/3b+4
3=1/3b
b=9
-3 2/5 - 5/6
how to do it
Answer:
- 4 7/30Step-by-step explanation:
-3 2/5 - 5/6 =- 17/5 - 5/6 = ⇒ converting the mixed fraction to standard- 17*6/5*6 - 5*5/6*5 = ⇒ bringing fractions to common denominator- 102/30 - 25/30 = - (102 + 25)/30 =- 127/30 = ⇒ answer as standard fraction- 4 7/30 ⇒ converting to mixed fractionAnswer:
- 4 ⁷/₃₀Step-by-step explanation:
= -3 2/5 - 5/6
= - 17/5 - 5/6 ---- LCM of 5 & 6 is 30
= _ 17 * 6 _ 5 * 5
5 * 6 6 * 5
= _ 102 - 25
30
= _ 127
30
= 4 ⁷/₃₀This isnt urgent but i need an answer, i will give the person who answers correctly brainliest, please try
Use the divisibility rules to determine which of the following numbers 315 is divisible by.(Check all that apply.)
-2
-3
-5
-7
-11
Answer: 3, 5, 7
Step-by-step explanation:
There is a "trick" to determine divisibility by 3: if the sum of the digits is divisible by 3, the number is divisible by 3.
3 + 1 + 5 = 9 which is a multiple of 3, so 315 is divisible by 3.
It works for 9 also. since the sum of the digits is 9, 315 is divisible by 9.
Divisibility by 5: any number that has the units digit 5 or 0 is divisible by 5.
For 7, I just tried it 315÷7= 45
Only even numbers are divisible by 2.
If a 3-digit number is divisible by 11, the middle digit will be the sum of the first and last digits. (That is not the case for 315) But 385 is divisible by 11, also 495, 253, and many others you can try for fun.
Santa Claus has been experiencing some recent back pain and is unable to carry large bags of toys over his shoulders. As a result he uses redex to deliver many of his gifts this year. Fedex charges a flat rate of $2.50 plus $0.85 per pound. If the cost of sending gifts to the Jones is $28.85, how much did their gifts weigh?
Answer: 31 pounds
Step-by-step explanation:
From the question, we are informed that Fedex charges a flat rate of $2.50 plus $0.85 per pound and that the total cost of sending gifts to the Jones is $28.85. This can be mathematically expressed as:
2.50 + 0.85p = 28.85
where p = weight of the gift
So we have to solve the equation
2.50 + 0.85p = 28.85
0.85p = 28.85 - 2.50
0.85p = 26.35
p = 26.35/0.85
p = 31
Therefore the weight of the gift is 31 pounds
please help
thank you again
Answer:
True
Step-by-step explanation:
So, again, from the most right column, we can add 5, -6, and -2 to get -3. We now know that every row or column must be equal to -3.
The question is asking if the number square below is -3. We found out from above that is -3 so it's true.
For a beverage, Lisa mixes cups of lemonade to cups of iced tea in a ratio of 3:7. Which of the following best describes the amount of lemonade to iced tea?
Answer:
Just add 4 to first and second number
Step-by-step explanation:
3:7 add four to both which becomes 7:11
Hi can sombody pleasee answer these and say what r, n, and y on all the equations are
85 - 7.2r = 25.24
6r - 3 = 10
170 - 4n = 130
4(2+3y) + 10 = 12
Answer:
r= 8.3
r=2.17
n=10
Step-by-step explanation:
The imani one thank you :)
Answer:
Equation is (b+7)/2=14
Solve, b=21
Solution: Imani started with 21 boxes
Step-by-step explanation:
Jon Kent's parents subtracted $3,500 from their adjusted gross income when they listed him as an exemption on their tax return . Jon's taxable income was $148. He paid $277 in withholding taxes. What amount should he expect as a tax refund?
Jon is single and can be claimed as a dependent by his parents. Jon has special rules. Look in your notes.
Answer: 3,917
Step-by-step explanation:
Solve for the value of w. (8w-7) (7w+8)°
Answer:
W1=0.875.
W2= -1.14
Step-by-step explanation:
(8w-7)(7w+8)
8w(7w+8)-7(7w+8)
56w^2+64w-49w-56
56w^2+15w-56
Solve it by quadratic equation
a=-b+-√(b^2-4ac)/2a
Substitute the values
And you will get 2 answers
a=-56
b=15
c=56
The system of equations graphed below has how many solutions?
A. 0
B. 1
C. Infinitely many
D.2
Answer:
A. 0
General Formulas and Concepts:
Perpendicular Lines always have 1 solution.
Parallel Lines always have no solution.
Same Lines always have infinite amount of solutions.
Step-by-step explanation:
We see from the graph given that the 2 lines are parallel. Since they are parallel, they will never intersect.
Therefore, we would have no solution, or 0 solutions, as our answer.
-18 = z -7 plz help me with this equation
Answer: z = -11
isolate the variable to solve
Answer:
z= -11
Step-by-step explanation:
add 7 to both sides: -18+7 = z
simplify: -11 = z
Lines r and 8 are parallel lines cut by transversal t. Which of the following can be used to prove that
when a transversal crosses parallel lines, alternate interior angles are congruent?
24 23 and 2326; therefore 2426.
24/2 and 26: therefore 46.
2
4 3
5
241 and 126; therefore 4. 6.
ş
5 6
8 7
245 and/5 6: therefore4 6.
DORE
My Progress
Answer:
43
Step-by-step explanation:
Please help on these 6 “?’s”
Elena wants to prove that the measures of the 3 angles in a triangle always
sum to 180 degrees. She starts by using rigid motions to rotate triangle ABC
180° around 2 midpoints. Explain how Elena labeled her diagram and finish
her proof.
E
D
o
6
С
В
B
My best explanation to this question is:
Elena has summed the total of all three angles in the straight angle to get 180°; <DAB, <BAC , and <CAE. But this does not mean a total of three angles will ALWAYS equal 180°. If one angle is greater than the other two, then there is a possible chance the angle will not be 180°. If the angles are scalene, then there is a greater chance the angle may not be 180°.
This may be wrong, so you don’t have to come up with my response exactly, just modify it to what you need. Wish you luck.
The measures of the 3 angles in a triangle always sum to 180 degrees.
What are congruent triangles?Two triangles are said to be congruent if their corresponding sides and angles are equal.
We have to determine the prove that the measures of the 3 angles in a triangle always sum to 180 degrees.
We have been given that angles as
∠ DAB, ∠ BAC, and ∠ CAE.
Each 180-degree rotation takes line BC to a parallel line. So line DA is parallel to BC and line AE is also parallel to BC.
There is only one line parallel to BC that goes through point A, so lines DA and AE are the same lines.
Since line DE is parallel to line BC,
∵ alternate interior angles are congruent.
This represents that angle BAD also measures b" and angle CAE also measures c'. D
Since DE is a line, the 3 angle measures at point A would sum to 180 degrees.
So a + b + c = 180.
The fact that this explanation is dependent on the triangle we started with indicates that any triangle's sum of its three angles is always 180 degrees.
Therefore, the measures of the 3 angles in a triangle always sum to 180 degrees.
Learn more about the congruent triangles here:
brainly.com/question/4364353
#SPJ2
23.749 in expanded form using decimals
Answer: twenty-three . seven hundred fourty-nine
twenty-three = 23
seven hundred = .7
fourty = 4
nine = 9
5-4x=6+2x what is the awnser
Answer:
−0.166667
Step-by-step explanation:
thats the answer
Solve for x step by step 8b + 2b = 10
Answer:
b = 1
Step-by-step explanation:
Move all terms that don't contain b to the right side and solve.
Answer:
Add
8 b and 2 b =10 b
Step-by-step explanation:
because 8+2 = 10
and the are alike terms
they both have b so that means they are alike terms
hope this helped
I really need help with this question. Please answer ASAP.
9(-5)=
Answer:
-45
Step-by-step explanation:
9 multiplied by -5 is -45 because when multiplied a positive number to a negative number stay negative