answer. mark is eleven years old
Answer:
11
Step-by-step explanation:
If Mark is seven years OLDER than Mark and the combined age adds up to 18 all you have to do is 18-7=11
solve for brainliest please
5x-19+9x+3=180
14x-16=180
14x=196
x=14
Hope this helped :)
Answer:
I TAKE BACK WHAT I SAID I READ THE QUESTION WRONG MY BAD
Step-by-step explanation:
how to put 2x+3y=12 into y=mxtb form
Answer:
[tex]y=-\frac{2}{3}x+4[/tex]
Step-by-step explanation:
First you divide every number in the equation by 3:
2x+3y=12
÷3 ÷3 ÷3
Rewrite equation:
[tex]y=-\frac{2}{3}x+4[/tex]
Hence the correct answer is [tex]y=-\frac{2}{3}x+4[/tex]
You bought a car for $5,000. Each year it appreciates in value by 8.5%. Which equation can be used to find the value, v, of the car, x years after it was purchased?\
The equation that represents the value of the car is v = $5000(1.085)^x.
What equation represents the value of the car?Appreciation means when the value of a car increases with the passage of time. The formula that can be used to represent appreciation is:
FV = P (1 + r)^n
Where:
FV = Future value P = Present value R = interest rate N = number of years
V = 5000(1.085)^X
To learn more about future value, please check: https://brainly.com/question/18760477
(Giving LOTS OF POINTS!!!) What is the discriminant of the following equation: x^2 − 2x + 2 = 0 Options: -8 -4 -12 12
Answer:
12
Step-by-step explanation:
1. What does the mark of the angles and sides of the triangle indicate?
2. Are there angles and sides that have the same measure length? Explain your answer.
2. You see them in your face:
[tex]\displaystyle m∠F ≅ m∠C;[/tex][tex]$\overline{FD}$[/tex] ≅ [tex]$\overline{CA}$[/tex]
[tex]m∠E ≅ m∠B;[/tex][tex]$\overline{FE}$[/tex] ≅ [tex]$\overline{CB}$[/tex]
[tex]m∠D ≅ m∠A;[/tex][tex]$\overline{ED}$[/tex] ≅ [tex]$\overline{BA}$[/tex]
To sum up, corresponding parts of congruent triangles are always congruent [CPCTC].
1. The edge and angle markings of both triangles represent all corresponding parts. Each angle and edge corresponds with another angle and edge.
I am joyous to assist you at any time.
PLEASE HELP
Which expression is equivalent to (3a)^-2?
1/9a^2
1/3a^2
3/a^2
9/a^2
.
Sophia is designing the seating arrangement for a concert and
outdoor theater. To give everyone a good view, each row must have 8
more seats than the row before it, and the 1st row can only have 13
seats. Help Sophia plan the rest of the seating by solving for how many seats are in row 20. Then explain to Sophia how to create an equation to predict the number of seats in any row.
Answer:
the answer for the first part is 260
the equation is n+8
Step-by-step explanation:
all you need to do is take the starting number witch is 13 then you add 8 and then take that number and add 8 so thats why the equation is n+8 n equaling the starting number and 8 equaling to the reoccurring number.
Please help thanks!!!! Will give brainliest when i have time
Answer:
see below
Step-by-step explanation:
A. reflection across the Y-axis (all the points are the same distance from their corresponding point)
B. BC and KL, CD, and LM; when the points are reflected those are the line segments they create.
C. BCD and KLM; same as above
Please simplify this with explanation
-10+4(2b+2)=
Answer:
2(4b-1)
Step-by-step explanation:
1. You would have to distribute first. So basically you just multiply 4 · 2b which gives you 8b and then 4 · 2
Answer to first step: -10+8b+8
2. Add the numbers. It should be -10 + 8 which would give you -2
Answer to second step: -2 + 8b
3. Rearranging the terms. So, instead of doing -2 + 8b you would have to do 8b - 2
Answer to third step: 8b - 2
4. 2(4b - 1) Find what times what gives you 8 (not 1 times 8) and the same for -2
Hope this helped!
one more! i have so much trouble finding x and y please help!!! (step by step preferably).
Answer:
x=90 y=33
Step-by-step explanation:
similar, so you can reflect x and y across, and x is altitude so x=90
90+y+47=180
90+y=123
y=33
PLEASE HELP SOON
What is the value of x?
Enter your answer in the box.
x =
Answer:
x =39°
the total interior angles of a triangle is 180°
let the unknown angle be x,
solve:
x + 39 + 102 = 180°
x = 180° - 39° - 102°
x = 39°
Therefore the unknown angle is 39°
This shape is made of three identical semicircles.
The perimeter of the shape is 36 centimetres.
Another shape is made up using the same semicircles as above.
Answer:
48cm
Step-by-step explanation:
The perimeter of first shape is 36cm. There are 3 semi circle (curves).
Therefore,
3 curves of semicircle (arc length) = 36
1 curve of semicircle (arc length) = 36/3
= 12cm
In picture 2,
4 semicircles (They've mentioned that they used the same semicircle for the 2nd shape also)
So,
4×12 = 48cm
The measures of the angles of a triangle are shown in the figure below. Solve for x
Answer:
X = 12
Step-by-step explanation:
25 + 114 = 139
180 - 139 = 41
41 + 19 = 60
60 / 5 = 12
Convert the mixed number 1 2/3
to an improper fraction.
Answer:
5/3
Step-by-step explanation:
An improper fraction is a fraction, not in mixed form, where the numerator (top half) is greater than the denominator (bottom half). Since this fraction is 1 2/3, we already have 1 full and 2/3 full. So, since the 1 is full, it means that in fraction form it equals 3/3.
We can finally add the fractions. [tex]2/3+3/3=5/3[/tex].
For the function h(x) = 4x2 - 3x, what is the value of h(-3)?
Answer:
I think it is 10 is the answer
Pleas help, I’ll mark as brainliest.
Answer:
When f(x) is 0, then x is -1.8.
Step-by-step explanation:
To find this, you simply have to look for the place where the line crosses the x axis. This is where y (or f(x)) is equal to 0. Since this graph only crosses that axis at x = -1.8, that is the number we are looking for.
A first class return fare costs £723 The exchange rate is £1 = 1.30 euros. How much is £723 in euros?
thanks <3
Answer:
its 939.9 i think i multiplied 1.30 by 723 to get 939.9 so i believe its 939.9
Step-by-step explanation:
What signal word lets the reader know when Erica called Megan?
and
next
then
with
Answer:
next
Step-by-step explanation:
pls mark as brainliest
Answer:
Step-by-step explanation:B
Please help!! Thank you!
Answer:
A. $209.53
Step-by-step explanation:
First, we have to take away 15% from the 850 dollar total so we can divide the remaining amount between the friends.
15% can also be written as the fraction 0.15
850 x 0.15 = 127.5
Now, we subtract the money they put away from the total amount.
850 - 127.5 = 722.5
So, the three friends have $722.50 to split between each other.
To figure out what amount everyone gets, we will first at together the total hours they worked.
17.25 + 18.25 + 14.5 = 50
Since the total hours is 50, we can divide the number of hours Shawn worked by 50 to find out what fraction of the total time he worked.
14 ÷ 50 = 0.29
0.29 is the same as the percentage 29%. This means Shawn worked for 29% of the total time out of his friends.
So, he gets 29% of the 722.50 dollars.
0.29 x 722.5 = 209.525
Round it up to 209.53
Shawn gets $209.53
if you answer you will get points and if it's right :D
1/5=2/10=5/25
To get 2/10, since, in the denominators, to go from 5 to 10, you multiply 5 by 2, I multiplied 1 and 2 to get the answer.
For 5/25, to go from 1 to 5 you multiply 1 by 5, so you multiply 5 by 5, and that's 25, so the denominator for that fraction is 25.
I don’t know this question and it’s really bugging me
A mini laptop computer is on sale for 40% off the regular price of $450. How much is the discount? a. $18 b. $27 c. $180 d. $270 Please select the best answer from the choices provided A B C D.
Answer:
C
Step-by-step explanation:
Since the laptop is on sale for 40% off, the discount is 40% of the regular price. Note that they are asking for the discount and not the discounted price.
Discount
= 40% ×$450
= ⅖ ×$450
= $180
Thus, option c is correct.
i need help on this
Answer:
(rectangular prism); opposite sides are equal
Area of bottom base;
3 feet x 3 feet = 9 feet,
Area of above base, (9 x 2) = 18
Area of front;
6 feet x 3 feet = 18 feet
Area of back, (18 x 2) = 36
Area of right side;
6 feet x 3 feet = 18 feet
Area of left side, (18 x 2) = 36
Find the sum of all the areas added;
18 + 36 + 36 = 90 square feet
Write two numbers that multiply to the value on top and add to the value on bottom -6 x -5
ATypically this is something done for factoring. To do that, I use trail and error. Do you need to do it by a system of equations?
Brainliest, Use the area model to multiply:
A) 2g - 3
B) -g
C) -99g - 54
D) 45g
Answer:
-99g-54
Step-by-step explanation:
11g*-9=-99x
-9*6=-54
How many ounces in half gallon??
Answer:
64 ounces
Step-by-step explanation:
In a whole gallon there are 128 ounces. So if you want to figure out a half gallon then 128/2=64oz
The circle at the right represents a planet. The radius of the planet is about 4700 km. Find the distance d to the horizon that a person can see
on a clear day from the following height h above the planet
h=2 km
A person can see a distance of approximately km on a clear day from a height of 2 km above the given planet.
Answer:
137.13km
Step-by-step explanation:
A right triangle is formed, where h + r = 2+ 4700= 4702 km is the hypotenuse, r = 4700km is one leg and d is the other leg. By Pythagorean theorem:
4702² = 4700² + d²
d² = 4702² - 4700²
d = √18,804
d = 137.13 km
Maria is building a circular pool. The radius of the pool will be 7 feet. She will put a cover on the pool and build a fence around the pool. How much material will she need to cover the top of the pool?
Answer:
about 154 square feet
Step-by-step explanation:
The area of the pool is given by the formula for the area of a circle:
A = πr²
A = π(7 ft)² = 49π ft² ≈ 153.94 ft²
About 154 square feet of material will be needed to cover the top of the pool.
__
Additional comment
The circumference of the pool is 2πr, or 14π feet -- about 44 feet.
At a pizza place, a large pizza cost $7. 50 and toppings cost $0. 50 each. Write an equation the can be used to represent the cost of a pizza, y, which x toppings.
Answer:
7.50 a pizza 0.50 for peporonies
Step-by-step explanation:
*PLEASE HELP ME ANSWER THIS, ILL GIVE BRAINLIEST!!!*
[ ATTACHMENTS ARE BELOW ]
Answer:
a) [tex]y + 3 = 2(x+2)[/tex] b) [tex]\sf y - 2 = -\frac{3}{8} ( x + 4)[/tex]
part A:
two points: [tex](-2,-3),(2,5)[/tex]
slope:
[tex]\sf \frac{y2-y1}{x2-x1}[/tex]
[tex]\sf \frac{5--3}{2--2}[/tex]
[tex]\sf \frac{4}{2}[/tex]
[tex]\sf 2[/tex]
equation:
[tex]\sf y - y1 = m ( x - x1 )[/tex]
[tex]\sf y - - 3 = 2 ( x - - 2)[/tex]
y + 3 = 2 (x+2)
part B:
two points: [tex](4,-1),(-4,2)[/tex]
slope:
[tex]\sf \frac{y2-y1}{x2-x1}[/tex]
[tex]\sf \frac{2--1}{-4-4}[/tex]
[tex]\sf -\frac{3}{8}[/tex]
equation:
[tex]\sf y - y1 = m ( x - x1 )[/tex]
[tex]\sf y - 2 = -\frac{3}{8} ( x - - 4)[/tex]
[tex]\sf y - 2 = -\frac{3}{8} ( x + 4)[/tex]
