Grace earns $7 for each car she washes. She always saves $21 of her weekly earnings. This week, she
wants to have at least $66 in spending money. How many cars must she wash?
Answer: 13
Step-by-step explanation:
[tex]66\geq 7x-21[/tex]
add 21 both sides
[tex]87\geq 7x[/tex]
divide both sides by 7
[tex]12.4\geq x[/tex]
So more than 13 cars
solve (8.5) . (-3) =a
Answer:
The answer is a = -25.5
Step-by-step explanation:
(8.5) . (-3) =a
-25.5 = a
a = -25.5 is your answer
Answer:
a = -25.5
Step-by-step explanation:
A box contains 2 plain pencil and 2 pens A box contains 3 color pencils and crayons . One item from each box is chosen random What is the probability that a plain pencil from the first box and a color pencil from the second box are selected ? write your answer as a fraction in simplest form
make a probability tree it will really help so much
Since 2005, the amount of money spent at restaurants in a certain country has increased at a rate of 5% each year. In 2005, about $290 billion was spent at restaurants. If the trend continues, about how much will be spent at restaurants in 2020? PLEASE HELP ME
Answer:
About $603
Step-by-step explanation:
Given data
The time interval 2005-2020= 15 years
The principal amount spent= $290 billion
The rate= 5%
Let us apply the compound interest formula
A=P(1+r)^t
substitute
A=290(1+0.05)^15
A= 290(1.05)^15
A= 290*2.0789
A= $602.881
Hence about $603 will be spent in 2020
What makes a mathematical statement an equation.
Answer:
Step-by-step explanation:
In mathematics, an equation is a statement that asserts the equality of two expressions, which are connected by the equals sign "=".
solve the equation 3x_2=7
Answer:
x = 3
Step-by-step explanation:
3x = 2 + 7
3x = 9
x = 3
Model With Mathematics A photographer is
placing photos in a mat for a gallery show.
Each mat she uses is x in, wide on each side.
The total area of each photo and mat is
shown
Answer:
a. The possible dimensions of the total area are;
The width of the total area is (2·x + 8) inches
The length of the total area is (2·x + 10) inches
b. The dimensions of the photos are as follows;
The length of the photos are 10 inches
The width of the photos are 8 inches
Step-by-step explanation:
a. Given that the area, A = 4·x² + 36·x + 80
We get;
A = 4 × (x² + 9·x + 20) = 4 × (x + 4) × (x + 5) = (2·x + 8)·(2·x + 10)
Therefore, the possible dimensions of the total area (photo + mat) are;
The width of the total area (photo + mat) = (2·x + 8) in.
The length of the total area (photo + mat) = (2·x + 10) in.
b. The dimensions of the photos alone are shorter than the dimensions of the photo and mat combined by 2·x each
Therefore, we have the dimensions of the photos are as follows;
The length of the photo = (2·x + 10) in. - 2·x in. = 10 in.
The width of the photos = (2·x + 8) in. - 2·x in. = 8 in.
A student said that 3 raised to power 5 / 9raised to power 5 is the same as1/3. What mistake has the student made?Write the correct answer.
I need help please
Answer:
distance = 10.6
Step-by-step explanation:
A's coords are (5, 6)
D's coords are (-2, -2)
So the total horizontal distance between A and D is:
5 + 2 = 7
...and the total vertical distance is:
6 + 2 = 8
Now use Pythagorean Theorem:
7^2 + 8^2 = distance^2
distance^2 = 49 + 64 = 113
distance = squareroot of 113
distance = 10.6
Answer:
Thing that I do is email the teacher and he or she will give me the answers try it yourself ok
Step-by-step explanation:
ABC is dilated using a scale factor of 2.5. Which property does not change?
A. side lengths
B.angle measures
C.area
D.perimeter
Macy’s is having a one-day 35% off special. If Sarah bought an item for $124, how much was the discount?
Answer: Mark me Brainliest :)
$80.92
Step-by-step explanation:
Given:
discount : 35%
Original cost : $124.50
Discount:
$124.50 x 35% = 43.575 ⇒ $43.58
Discounted price
$124.50 - 43.58 = $80.92
Answer:
$80.93
Step-by-step explanation:
ILL GIVE BRAINLEIST
Options:
1. 40
2. 50
3. 80
4. 100
Answer: I would probably say c 80
Step-by-step explanation:
Round the following to the nearest hundreds. 23457,45289,2458
I think it's 23500, 45300, 2500
Jennifer deposits $1,000 into an account that is compounded monthly for 4 years. The account earns 7% interest. What is the ending balance in the account at the end of the 4 years (assuming no new deposits or withdrawals)? SHOW THE WORK PLEASE
9514 1404 393
Answer:
$1,322.05
Step-by-step explanation:
The compound interest formula is appropriate.
A = P(1 +r/n)^(nt) . . . principal P earning annual rate r for t years, compounded n times per year
You have P=1000, r=.07, n=12, t=4, so the balance is ...
A = $1000(1+.07/12)^(12·4) ≈ $1000(1.322054)
A = $1,322.05
Jennifer's ending balance is $1,322.05.
If the black square rotates at a rate of 2 inches per second, how long would it take for one full rotation?
Answer:
The answer is below
Step-by-step explanation:
The question is not complete.
Let us assume that the black square rotates in a circular part of radius 1 inch.
Therefore, in one full rotation the distance covered (θ) is the same as the perimeter of the circular part. Therefore:
θ = 2πr = 2π(1) = 6.28 inch
The time taken to complete one full rotation (t) is:
t = θ / v
t = 6.28 / 2
t = 3.14 seconds
What is 2x+5=25? I would like to know it step by step please.
Step-by-step explanation:
subtract 5 from 25 and it should look like this
2x=20
divide 2 and your is 10
Answer:
No problem! Well first off, x is 10.
Step-by-step explanation:
So you know that 2 times a certain number, plus 5, is 25. The first step to solving this problem is subtracting 5 from the total (25) to give you 20. This just makes it easier to find x, so you technically don't have to do it. So now, you know that 2 times a certain number equals 20 (because we got rid of the 5). Now, just divide your number (20) by 2, to get that x is 10. Let's check our answer.
2(10) + 5= 2520 + 5= 25
25= 25.
Works out!
Please like and mark brainliest!
Hope it helps!
Compare -3 and 9. Which of the following is true?
What is the solution y=5(x/10-2)
Answer:
you weren't clear if we have to solve for x or y so I did both of them. hope this helps!
Step-by-step explanation:
Erin needs to make at least a 75 on her semester exam to maintain a B in the class. Which number line correctly represents this situation?
3.7 x 10 to the power of 2
Answer:
1369
Step-by-step explanation:
3.7 x 10 = 37 x 37 = 1369
What is the value of y in the equation y = 3x – 13, when x = 6
Answer:
5
Step-by-step explanation:
How many faces does a solid with 12 vertices and 18 edges have?
28, 18, 6, or 8?
Answer:
8 faces
Step-by-step explanation:
In geometry, the hexagonal prism is a prism with a hexagonal base. This polyhedron has 8 faces, 18 edges, and 12 vertices.
Hope this helps!
Solve the equation: 3√3x + 4 = -2
Answer:
2√3/3
Step-by-step explanation:
3√3x=-6 divide both sides by 3√3 x=-2/√3 rationalize the denominator
math please help <<--- aaaa
Answer:
Step-by-step explanation:
[tex]H(t) = 14000(0.8)^{t +3}\\\\ = 14000*(0.8)^{t}*(0.8)^{3}\\\\=14000*(0.8)^{t}*0.512\\\\=7168(0.8)^{t}[/tex]
Answer:
it is 7168(0.8)t
Step-by-step explanation:
hope this helped
What is the perimeter of the larger triangles
classify as a acute, right, obtuse or not a triangle : 9in, 40in, 44in
Answer:
Acute.
Step-by-step explanation:
your welcome:)))))))
(-8) + 2 + (-11) - (-9) + (6) cuanto es plis?
Answer:
=−2
Step-by-step explanation:
Answer:
36
Step-by-step explanation:
if there are these () around a negative number then it makes it even.
Is (1,7) a solution to the inequality y < 3x + 3?
Answer:
yes
Step-by-step explanation:
because 7 is equal to 3 so the answer is correct
can yall help thank you in advance
Answer:
Step-by-step explanation:
Perimeter of the deck = (d + 5) + (d + 5) + (d + 5) + (d + 5)
1). By grouping method,
Perimeter = (d + d + d + d) + (5 + 5 + 5 + 5)
2). Perimeter = Number of sides × Length of a side
= 4(d + 5)
3). Expression from problem 1,
Perimeter = (d + d + d + d) + (5 + 5 + 5 + 5)
= 4d + 20
= 4(d + 5)
Expression from problem 2,
Perimeter = 4(d + 5)
Bot the expressions are same.
Landon, Wes, and Tim attempted 25 basketball shots each.HELP ASAP
• Landon made 36/100 of his shots.
• Wes made 2/5 of his shots.
• Tim made 32% of his shots.
Which statement it true
Wes made the most shots.
Landon made more shots than Wes.
Tim made more shots than Landon.
Landon, Wes, and Tim made the same number of shots.
Answer: Wes made more shots
Step-by-step explanation: