Answer:
-3i
Step-by-step explanation:
6(3+2i)
3(6+5i)
18+12i
-
18+15i
=-3i
If 4x + 7 = 23, find the value of 12 + 2x
Answer:
2x+12
Step-by-step explanation:
i hope this helps
please help this is due in an hour
Answer:
Not proportional
Step-by-step explanation:
22/20 does not equal 18/15.
Answer:
B: Not proportional
Step-by-step explanation:
This wouldn't be proportional because for you, you are making 22 heartbeats in 20 seconds and 22-20 is 2. But if you look at your friend, he/she is doing 18 heartbeats in 15 seconds so add 5 so that 23 heartbeats is happening in 20 seconds and 23-20 is 3. If we compare, 3 is not the same as 2 making it not proportional.
You are at the store, and are trying to remember how much bread, meat, and cheese you were supposed to buy. The bread costs $1 per loaf, the meat costs $4 per pound, and the cheese costs $3 per pound. You know that you are to buy eight items, that the total cost will be $17, and that you are supposed to purchase three times as much cheese as meat. How many of each do you need to purchase?
Answer:
4 bread loafs, 1 pound of meat, 3 pounds of cheeseStep-by-step explanation:
Let loaf of bread be b, meat be m and cheese be c
Based on the given, we have following equations:
b + m + c = 8c = 3mb + 4m + 3c = 17Subtract the first equation from the third and substitute c with m:
b + 4m + 3c - (b + m + c) = 17 - 83m + 2c = 93m + 2(3m) = 99m = 9m = 1Then
c = 3*1 = 3b = 8 - (1 + 3) = 4which value of x makes the equation 8(x - 8.5) = 4 true
Answer:
x=9
Step-by-step explanation:
Jordan can ride his bike 24 miles in 2 hours. How many miles can he ride his bike in 5 hours?
Answer:
60 miles
Step-by-step explanation:
24 miles ÷ 2= 12
2 hours ÷ 2 =1
12 miles in 1 hour
1 hour × 5 = 5 hours
12 miles × 5 = 60 miles
60 miles in 5 hours
I need help pls !!!!!!
Answer:
45
Step-by-step explanation:
Help me please... the picture is down below:)
Answer:
x=35
Step-by-step explanation:
x+110+35=180
x+145=180
x=180-145
x=35
If ABC=DEC, C=55, D=65, and B=2x. x=?
Answer:
X = 30
Step-by-step explanation:
B = E
DEC = 180 degrees/ 65 + E + 55 = 180
E = 60
B = 2x
2x = 60
x = 30
The value of x in the given figure is 32.5.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
∠C = 55
∠D = 65
∠B = 2x
∠D and ∠B are alternate angles.
Alternate angles are equal.
65 = 2x
x = 65/2
x = 32.5
Thus,
The value of x is 32.5
Learn more about triangles here:
https://brainly.com/question/25950519
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Lindsey invests $1500 in one account and $900 in an account paying 4 % higher interest. At the end of one year she had earned $204 in interest. At what rates did she invest?
Answer: She invest 41500 at 7% interest and 900 at 11% interest.
Step-by-step explanation:
Formula for simple interest = [tex]\dfrac{\text{Principal x rate x Time}}{100}[/tex]
Let [tex]P_1=\$1500,\ P_2=\$900\ \ \ \ , r_1=r, \ \ r_2=r+4,\ \ \ t_1=t_2=1[/tex]
Simple interest by first investment = [tex]\dfrac{P_1r_1t_1}{100}=\dfrac{1500(r)(1)}{100}=15r[/tex]
Simple interest by second investment = [tex]\dfrac{P_2r_2t_2}{100}=\dfrac{900(r+4)(1)}{100}=9(r+4)[/tex]
As per given,
Total interest = $204
[tex]\Rightarrow 15r+9(r+4)=204\\\\\Rightarrow\ 15r+9r+36=204\\\\\Rightarrow\ 24r=204-36\\\\\Rightarrow\ 24r=168\\\\\Rightarrow\ r=\dfrac{168}{24}\\\\\Rightarrow\ r=7\%[/tex]
Hence, she invest 41500 at 7% interest and 900 at 11% interest.
Solve the system of linear equations by graphing. Round the solution to the nearest tenth as needed. y + 2.3 = 0.45x
Answer:
(0,-2.3) or (5.111,0)
Step-by-step explanation:
A metric ruler can be used to measure what type of object?? Please help me!!
Answer:
A pencil
Step-by-step explanation:
Answer: a water bottle
Step-by-step explanation:
I got x = 45
And I was wondering if anyone one could tell me if im correct
Answer:
x = 45°
Step-by-step explanation:
Congruence of Angles:
Linear angles are those consecutive angles formed when two lines cross. Their sum of linear angles is 180°.
Corresponding angles are those which occupy the same relative position at each intersection where a straight line crosses two others. If the two lines are parallel, the corresponding angles are congruent.
From the provided figure, angles y and 3x-60 are linear, thus:
y + 3x - 60 = 180
y = 180 - 3x + 60
y = 240 - 3x
Also, being p and q parallel lines, angles y and 2x+15 are corresponding, thus:
240 - 3x = 2x + 15
Adding 3x:
240 = 2x + 3x + 15 = 5x + 15
Subtracting 15:
240 - 15 =5x = 225
Dividing by 5:
x = 225 / 5 = 45
x = 45°
Which expression represents the positive solution of x ^ 2 = 8?
Answer:
x ^ 2 = 8
x = √8
Tanvir graphed the relationship between the number of rotations of the screwdriver and the height of a screw head above a piece of wood.
What does the slope represent in this context?
Choose 1 answer:
A. The height of the screw head above the wood before Tanvir rotated the screwdriver
B. The number of rotations it takes to change the screw head height by 1 millimeter
C. The number of millimeters per rotation that the screw height changes
D. None of the above
Please answer ASAP!
Answer:
C
Step-by-step explanation:
I did it
Answer: B
Step-by-step explanation:
A red-tailed hawk dives at a constant rate in which its altitude changes by -7 ½ meters in 0.15 seconds. How long will it take the hawk to dive -70 meters?
Answer:
1.4 seconds
Step-by-step explanation:
If the red-tailed hawk dives at a constant rate in which its altitude changes by -7 ½ meters in 0.15 seconds, the rate at which it changes its altitude is thus -7 ½ meters ÷ 0.15 seconds = -7.5 meters ÷ 0.15 seconds = -50 meters per second = -50 m/s.
Now, If the red-tailed hawk dives to a depth of -70 meters, the time it will take to cover that distance is t = distance/rate = -70 m/-50 m/s = 7/5 s = 1.4 s
So, it will take the red-tailed hawk 1.4 seconds to dive to a distance of -70 meters.
answer this question: what is 9+10
Answer:
nineteen
Step-by-step explanation:
ty for the points luv
find the value of y that makes the equation y = 1/2 x -2 true when x = 4 choose one
A) -4 B) 0 C) 1 D) 4
Answer:
B) 0
Step-by-step explanation:
Marty's class collected $11.40 in a school-wide penny collection contest. If Tommy's class subtracted $4.70 from the amount they collected, x, and then multiplied the difference by 2, they would have the same amount of money as Marty's class.
Answer:
braiiiiiiiiinlllllllyyyyyyyyest
Step-by-step explanation:
anybody know how to do dis one?
Answer:
k=8
Step-by-step explanation:
-11-k=-3
+11 +11
-k=8
divide -1 on both sides
k=8
(7th gradish answer please)
Define coordinate in your own words
Answer:
A specific instead of general place where you can find something
Rocio poured a square patio outside her back door. Each side measured 8.5 feet. Which equation represents the perimeter, in feet, of Rocio's patio? A. 8.5 + 8.5 = 17 B. 4 × 8.5 = 34 C. 2 × 8.5 = 17 D. 8.5 × 8.5 = 72.25
Answer:
B. 4 × 8.5 = 34Step-by-step explanation:
The formula for calculating the perimeter of the square patio is expressed as;
P = 4L
L is the length of each side of the square patio
Given
L = 8.5 feet
Required
Perimeter in feet of Rocio's patio
Substitute the given parameter into the formula;
Perimeter = 4 * 8.5
Perimeter = 34ft²
Option B is correct.
Answer:
Step-by-step explanation:
72.25 the answer
what's the range???
Answer:
Step-by-step explanation:
range is the y values where the graph goes through
since there are closed circles, we’ll use brackets
range is [-9, -4]
**the smaller value goes first, then the bigger value
A movie theater has a seating capacity of 249. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults. There are half as many adults as there are children. If the total ticket sales was $ 1806, How many children, students, and adults attended?
9514 1404 393
Answer:
126 children63 adults60 studentsStep-by-step explanation:
Let a represent the number of adults that attended. Then 2a is the number of children, and (249 -a -2a) is the number of students. The total revenue is ...
5(2a) +7(249 -3a) +12a = 1806
a +1743 = 1806 . . . . simplify; next, subtract 1743
a = 63 . . . . . . . . adults
2a = 126 . . . . . . children
249 -3a = 60 . . students
126 children, 63 adults, and 60 students attended.
Which of the following is not a congruence theorem or postulate?
Answer:
where are the following???
Step-by-step explanation:
Point F' is the image when point F is reflected over the line x= -2 and then over the line y = 3.
The location of F' is (3,7).
Which of the following is the location of point F?
A (-7,-1)
B (1,5)
C (1,7)
D (-7,7)
Answer:
Step-by-step explanation:
1. Graph the points
2. Connect the point 3,7
3. Reflect it over line x=-2 and y=3
THE ANSWER IS A (-7,-1)
The location of the point F should be considered as the option A. (-7,-1).
Calculation of the location:Since Point F' is the image when point F is reflected over the line x= -2 and then over the line y = 3. The location of F' is (3,7).
So here we have to do graph the points, then connected the points i.e. 3 and 7. And, then reflect it over the line i.e. x = -2, and y = 3
So here the answer should be (-7,-1)
Learn more about point here: https://brainly.com/question/14424200
Camilla and Claudette offer hourly gymnastics classes. Together they can teach 14 students
at a time. They offer classes at 4pm, 5 pm, and 6 pm Monday through Thursday and 9:30 am
and 10:30 am on Saturdays. A one hour class costs $50. Their gymnastics arena costs them
$3,200 a month in rent and utilities. How much profit do they make in one month? Assume a
4 week month.
Answer:
so its 37377 im doing this for points
Step-by-step explanation:
i dont know if its wrong but add 1+h3
Pleasee help me :)))
Answer:
Ok Ill help you :)
Step-by-step explanation:
a) -125
b) +27
c) -9
d) +9/8
I hope this helps!!! ❤️
yo i need help on this.... i don’t know math sorry guys
Answer:
4/10=40%
Step-by-step explanation:
Answer:
the answer is 40%
Step-by-step explanation: You can find this value by dividing the numerator by the denominator and multiplying to get you the result of 100%, so:
4/10 in percent = 4 / 10 × 100% = 0.4 x 100% = 40%
~Hope this helped you~
Payton uses 1 1/2 cups of vinegar in her salad dressing recipe. How much vinegar would Payton use to make 4 2/3 recipes? Plsssssssssssssssss hurryyyyyyyyyy
Answer: 3 1/9 cups of vinegar
Step-by-step explanation:
From the question, we are informed that Payton uses 1 1/2 cups of vinegar in her salad dressing recipe.
To know how much vinegar Payton would use to make 4 2/3 recipes, we divide 4 2/3 by 1 1/2. This will be:
= 4 2/3 ÷ 1 1/2
= 14/3 ÷ 3/2
= 14/3 × 2/3
= 28/9
= 3 1/9 cups of vinegar
Penelope has $1,459.75 in her bank account. To pay her bills, she writes 4 checks in the amounts of $200.25, $359.45, $125, and $299.35. Then she deposits $375 into her account. Penelope’s account balance after she pays her bills and makes the deposit is $ .
Answer:
$850.70
Step-by-step explanation:
Subtract all her check amounts and add the deposit. You come up with $850.70