Answer:
1. 12+0.65(12)
2. 19.80
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.
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
which value of x makes the equation 8(x - 8.5) = 4 true
Answer:
x=9
Step-by-step explanation:
Which expression represents the positive solution of x ^ 2 = 8?
Answer:
x ^ 2 = 8
x = √8
can u please help me
Answer:
first one
Step-by-step explanation:
bcz it is
If 4x + 7 = 23, find the value of 12 + 2x
Answer:
2x+12
Step-by-step explanation:
i hope this helps
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:
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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:
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) = 4A 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.
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.
hi i need help in math pls i am really bad plssssssss
Answer:
The answer is a= [tex]\frac{8x^2+11x+1}{2}[/tex]
Step-by-step explanation:
Combine like terms and we get,
[tex]24x^2+83x+3=6ax[/tex]
[tex]\frac{24x^2+33x+3}{6x} =a[/tex] divide both sides of the equation by ax, and simplify further,
[tex]\frac{x(8x^2+11x+1)}{2}[/tex] notice that we can reduce the 24 over 6 1/2,
[tex]\frac{8x^2+11x+1}{2} =a[/tex] distribute and simplify further
And a=[tex]\frac{8x^2+11x+1}{2}[/tex]
I need help pls !!!!!!
Answer:
45
Step-by-step explanation:
FUNDRAISERS The Band Boosters had custom T-shirts made for homecoming that they plan to sell for $10 each. They
paid a $25.90 setup fee and $8.15 per shirt to have the shirts made. How many shirts do they need to sell to break even?
If x represents the number of shirts, write an equation to represent the situation.
Write an equation
Answer:2 I think?
Step-by-step explanation:
The required expression for the shirts they need to sell to break even is y = 25.90 + 8.15x.
Given that,
T-shirts made for homecoming that they plan to sell for $10 each.
They paid a $25.90 setup fee and $8.15 per shirt to have the shirts made.
How many shirts do they need to sell to break even is to be determined?
The equation is the relationship between variables and represented as y =ax +b is an example of a polynomial equation.
Let, x represents the number of shirts and y be the total cost for the number of x shirts,
They paid a $25.90 setup fee and $8.15 per shirt to have the shirts made.
Implies,
The total cost of x shirts = $8.15x
Total spend on the manufacturing of x shirts,
y = $25.90 + 8.15x
Thus, the required expression for the shirts they need to sell to break even is y = 25.90 + 8.15x.
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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
(7th gradish answer please)
Define coordinate in your own words
Answer:
A specific instead of general place where you can find something
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 music player was marked down by 1/4 of the original price. If the sales price is $128, what is the original price? If the music player was marked up by ½ before it was placed on the sales floor, what was the price that the store paid for the player? What is the difference between the discount price and the price that the store paid for the music player?
Answer:
Step-by-step explanation:
Let the original price be represented by x.
1. [tex]\frac{1}{4}[/tex] of x = x - 128
[tex]\frac{x}{4}[/tex] = x - 128
x - [tex]\frac{x}{4}[/tex] = 128
4x - x = 4 x 128
3x = 512
x = [tex]\frac{512}{3}[/tex]
= 170.67
x = 170.67
The original price is $170.67.
2. If the price of the music player was marked up by ½ of its original price, its new price would be;
170.67 + (170.67 x ½) = 170.67 +85.335
= 256.005
≅ $ 256.0
The price paid by the store for the music player is still the original price i.e $170.67.
3. The difference between the discounted price and the price paid by the store can be determined by;
price paid by the store - the discounted price of the music player
= $170.67 - $128
= $42.67
A pet store has 8 dogs, 12 turtle, and 3 cats. Write a ratio for each of the following situations.
Turtles to dogs:
Dogs to turtles:
Answer: 12 Turtles to 8 dogs
8 dogs to 12 turtles
Step-by-step explanation:
Hope this helps and have a marvelous rest of your day!
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:
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
Hannah is at the supermarket to buy carrots and potatoes. If she buys 2 pounds of carrots and 3 pounds of potatoes, it will cost her a total of $8, and if she buys 4 pounds of carrots and 4 pounds of potatoes, it will cost her a total of $13. Which of these statements is correct?
Answer:
How much money per pound of each?
Step-by-step explanation:
choose 2 hellllpppppp plzzzxxxxzz
Answer:
Choices C and D
Step-by-step explanation:
The most simplest way is just to solve each one and see which two have the same answer as the first expression.
But you could also see that both of the [tex]\frac{4}{7}[/tex] are going to cancel each other out so you are left with [tex]-\frac{8}{9} +\frac{9}{8}[/tex] which is also choice C.
For choice D I distributed the negative one to the insides of the parenthesis that left me with [tex]-\frac{4}{7}-\frac{8}{9}+\frac{4}{7} +\frac{9}{8}[/tex] which is the same expression as the first one.
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
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~
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°
Just answers. No explanation needed. ASAP. WILL GIVE BRAINLIEST!!!
YEETTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT I FEEL BAD BUT
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
help please ! ill give brainliest if correct
9514 1404 393
Answer:
a) (-5±√10)/3 ≈ {-2.721, -0.613}
b) (6±√21)/5 ≈ {0.283, 2.117}
Step-by-step explanation:
a) The relevant coefficients are ...
a = 3, b = 10, c = 5
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\dfrac{-10\pm\sqrt{10^2-4\cdot3\cdot5}}{2\cdot3}=\dfrac{-10\pm\sqrt{40}}{6}\\\\\boxed{x=\dfrac{-5\pm\sqrt{10}}{3}\approx\{-2.721, -0.613\}}[/tex]
__
b) The relevant coefficients are ...
a = 5, b = -12, c = 3
[tex]x=\dfrac{-(-12)\pm\sqrt{(-12)^2-4\cdot5\cdot3}}{2\cdot5}=\dfrac{12\pm\sqrt{84}}{10}\\\\\boxed{x=\dfrac{6\pm\sqrt{21}}{5}\approx\{0.283, 2.117\}}[/tex]