Answer:
If x and y are the hours she drove at the different rates, then:
x+y=5
80x+100y=440
-------
80x+100y=440
80x+80y=400
20y=40
y=2
x=3
She drove 3 hours at 80 kmh and 2 hours at 100kmh!!!!!!!
Step-by-step explanation:
Find the area of this figure around your answer to the nearest 100. use 3.14 to approximate 3.14 as pi
Answer:
Area = 49.12 ft²
Step-by-step explanation:
The area of the figure = area of triangle + area of half of a circle
= ½*bh + ½(πr²)
b = 6 ft
h = 8 ft
r = ½ of 8 ft = 4 ft
π = 3.14
Plug in the values
Area of the figure = ½*6*8 + ½(3.14*4²)
Area = 24 + 25.12
Area = 49.12 ft²
Answer:
49.12
Step-by-step explanation:
40 - 10 + 20
Don’t answer until when it’s one min later....there is a timer on my math probs so ya
Answer:
The answer is 50
Step-by-step explanation:
40-10=30
30+20=50
9) A car dealer offers a discount of 20% off the normal price of a car, for cash. Peter intends to buy a car which usually cost £6800. He intends to pay by cash. Work out how much he will pay.
10) A month ago, John weighed 97.5 kg. He now weighs 4.5% more. Work out how much John now weighs. Give your answer to 1 decimal place.
Answer:
1360
Step-by-step explanation:
Which polynomial represents the difference below? 10x^8 + 11x^6 - 2x + 5 - (8x8 + 6x7 - 5)
Answer:
[tex]2x^8-6x^7+11x^6-2x+10[/tex]
Step-by-step explanation:
To find: [tex]10x^8+11x^6-2x+5-(8x^8+6x^7-5)[/tex]
Solution:
Like terms refer to terms with same variables and same powers.
Two like terms can be added or subtracted.
Consider the following expression:
[tex]10x^8+11x^6-2x+5-(8x^8+6x^7-5)=10x^8+11x^6-2x+5-8x^8-6x^7+5\\=(10-8)x^8-6x^7+11x^6-2x+(5+5)\\=2x^8-6x^7+11x^6-2x+10[/tex]
(Here, like terms are added or subtracted)
What three dimensional shape is made when you rotate a triangle horizontally?
Answer:
When you rotate a triangle horizontally, a cone is formed.
Ellie shares 24 cupcakes with x friends, how many cupcakes does each friend get?
Answer:
24/ 1 + x
you would have to divide the cupcakes upon the friends.
Every morning, Jim goes for a morning walk. His normal walking speed is 3 1/2 km per hour, and he walks a total distance of 10 km every day. How much time does he take to cover one km?
Hint 1 Notice the unit of Speed.
Hint 2 Can you figure out the distance covered in one hour
Answer:
Jim's walking speed = 312kmph
covered distance = 10km
time taken for one hour = ?
we know that: Distance =speed × time
=>Time = Distance/speed
=> Time = 10/312=5/156 hours
= Time = (5×60)/156=300/156=75/39=1.9 minutes
Step-by-step explanation:
If lines r and s are parallel, what would be the measurement of angle 6 if angle 1 was 2x+4 and angle 2 was 6x+8?
Answer: 134
Step-by-step explanation:
Angle 1 and 2 are supplementary and Angle 2 is congruent to Angle 6
Thus, first solve for x
8x+12=180
x = 21
Then solve for angle 2 which is congruent to angle 6
6(21) + 8 = 134
PLEASE HELP ME WITH THIS ONE
the answer is B. 2
Both are close to 2 but a little under or a little over
Answer:
I want to say 2
Step-by-step explanation:
if you try to solve them you get 1.22.... and 2.82.... so 2 is in-between
Need the answer been stuck on this
Answer:
19 cm³
Step-by-step explanation:
The figure cam be decomposed into two cuboid.
✔️Dimension of cuboid 1:
L = 2 cm
W = 1 cm
H = 8 - 3 = 5 cm
Volume = L * W * H
Volume = 2*1*5 = 10 cm³
✔️Dimension of cuboid 2:
L = 3 cm
W = 1 cm
H = 3 cm
Volume = L*W*H = 3*1*3
Volume = 9 cm³
✅Volume of the irregular figure = 10 + 9 = 19 cm³
WILL MARK BRAINLYIST
Answer:
12
Step-by-step explanation:
You solve for x in 2 methods 7x+10=94 Or 4x-6=42
7x=84
x=12
Help please please!!!!!
Answer:
x=28
Step-by-step explanation:
Look at attached image.
There are 8 red, 5 blue, and 2 green marbles in a hat. Without looking, you picked a blue marble. Without putting the blue
marble back, what is the probability of picking a green marble?
Answer:
1/3
Step-by-step explanation:
A bag of sugar contains 420g. A
special offer packet contains an extra
15%. Work out how much extra sugar
is in the special offer packet.
Answer:
63g extra
Step-by-step explanation:
420 x 0.15 =63 g
PLEASE HELP WITH THIS BEST ANSWER GETS BRAINLIEST
This is an example of a random sample: The Student Council wants to survey 7th grade students about their favorite lunch food. They write down the names of all 7th grade students and put their names in a hat, then draw names to collect the sample of students to be asked.
True
False
GIVING BRAINLIST. 6 dimes if what percent of a dollar
Answer:
60%
Step-by-step explanation:
6 dimes is 10x6 and a dollar would have 10 dimes so 60%
The population of a city has been increasing by 2% annually. In 2000, the population was 315,000. Predict the population of the city in 2020. Round your answer to the nearest thousand.
Answer:
In 2020 there will be 468,073 people.
Step-by-step explanation:
Giving the following information:
Growth rate (g)= 2% = 0.02
Population 2,000= 315,000
Number of periods (n)= 20 years
To calculate the population in 2020, we need to use the following formula:
FV= PV*(1+g)^n
FV= 315,000*(1.02^20)
FV= 468,073
In 2020 there will be 468,073 people.
What is the domain?
(-∞,∞)
[0,∞)
(-∞,0]
-2, 2
Answer:
(-∞,∞)
Step-by-step explanation:
The domain is the possible x values, so for this function x^2 , the possible x values are all the values
(-infinity , infinity)
Please tell me if these questions are like or unlike!! (Math)
Answer:
1. like
2.unlike
3.unlike
4.like
5. ......
6. ......
Step-by-step explanation:
Answer:
The number 5 and 6 is both unlike
I hope i it help's you
For every hour that Jill worked, she made $10
Write an equation to model how much money she can make.?\
HELP
Answer how many hours did she work?
Step-by-step explanation:
please could i have help with this i get 336m and its not one of the choices
¿cuál. es el. valor. nutricional total de la naranja ?
Answer:
Las naranjas aportan cantidades importantes de vitamina C y folatos. Tienen un contenido apreciable de tiamina, vitamina A, calcio, potasio yfibra y destacable contenido de carotenoides y flavonoides.
Step-by-step explanation:
Answer:
Las naranjas aportan cantidades importantes de vitamina C y folatos. Tienen un contenido apreciable de tiamina, vitamina A, calcio, potasio yfibra y destacable contenido de carotenoides y flavonoides.
Step-by-step explanation:
A circle that has a center at the origin and a diameter of 12
Answer:
A≈113.1
Step-by-step explanation:
A=πr2
A=π·62
A≈113.09734
5x10 but showing your work
Answer: 50
Step-by-step explanation: 5 times 10 means that there is going to be 5 10’s added together, so 10+10 = 20 + 10 + 10 = 40 + 10 = 50 so 5 times 10 is 50
Help with Trig and special right triangles (PIC INCLUDED)
Answer:
sin a = cos C
sin C = AB/AC
tan a = BC/AB
Find the slope of BG, and HL using the coordinates; B(-4, 3), G(-2, 4), H(1, -2), L(-1, -3). then determine if the lines are parallel.
Answer:
0.5 or [tex]\frac{1}{2}[/tex]
Step-by-step explanation:
BG = [tex]\frac{4-3}{-2--4}[/tex] = 0.5
HL = [tex]\frac{-3--2}{-1-1}[/tex] = 0.5
This mean that the lines are parallel ..
In ΔMNO, m = 55 inches, n = 48 inches and o=59 inches. Find the measure of ∠O to the nearest 10th of a degree.
Answer: 69.5 degree
A traveling circus with thrill rides Charge 7$ For admission $1.50 For each ride you take. If you pay $29.50 total, how many rides did you take?
Answer:
15 rides
Step-by-step explanation:
29.50 - 7 = 22.50
22.50 / 1.50 = 15
Evaluate the expression: 8 ⋅ (1/2)^2
Answer:
2
Step-by-step explanation:
8 ⋅ (1/2)^2 = 8 * (1/2) * (1/2)
=4/2
=2
4 ^-3 rewrite without an exponent
Answer:
(1/4)³
Step-by-step explanation:
Hope it helps you
Answer:
[tex]\frac{1}{64}[/tex]
Step-by-step explanation:
Negative exponents means you bring the base to the denominator, which becomes a fraction.
[tex]4^{-3} \\=\frac{1}{4^{3}}[/tex]
The question wants us to write without an exponent.
The [tex]4^{3} = 4 * 4* 4=64[/tex]
So, it becomes:
[tex]\frac{1}{64}[/tex]