Answer:
72 dentists
Step-by-step explanation:
In this case, we can multiply 80 by 9/10 or .9 to get our answer.
If we were to multiply by 9/10 it would look like this:
[tex]80 * \frac{9}{10} \\\frac{720}{10} = 72[/tex]
But, if we were to multiply by .90 (remember that 9/10 = .9) it would look like this:
[tex]80(.90) = 72[/tex]
Therefore, if 9 out of 10 dentists recommended PurWhite toothpaste and 80 were surveyed then 72 out of the 80 would have recommended it.
I hope this helps!!
If you have any questions feel free to ask!
- Kay :)
Find the slope of a line parallel to each given line. y = − 1 4 x − 2
Let $r$ and $s$ be the roots of $3x^2 + 4x + 12 = 0.$ Find $r^2 + s^2.$
Use a similar strategy as in your other question, [19925664].
3x² + 4x + 12 = 3 (x - r ) (x - s)
3x² + 4x + 12 = 3 (x² - (r + s) x + rs)
3x² + 4x + 12 = 3x² - 3 (r + s) x + 3rs
so that
r + s = -4/3
rs = 12/3 = 4
Recall that
(r + s)² = r² + 2rs + s²
so that
r² + s² = -2rs = -2(4) = -8
simplify this Problem 1.5 x 1.5
Answer:
2.25
Step-by-step explanation:
1.5 times 1.5 is 2.25
"simplify" just means to solve in ur case..
Hope this helps!!
1.5 multiplied by 1.5 equals 2.25.
To simplify the problem 1.5 x 1.5, you can multiply the two numbers together.
To calculate this, you can follow these steps:
Multiply the first digit of the first number (1) by the first digit of the second number (also 1): 1 x 1 = 1.
Multiply the decimal parts of both numbers: 0.5 x 0.5 = 0.25.
Add the results from step 1 and step 2 together: 1 + 0.25 = 1.25.
The final answer is 1.25, but we need to consider the decimal places. Since both numbers have one decimal place, the final answer will have two decimal places: 2.25.
Therefore, 1.5 x 1.5 simplifies to 2.25.
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Which table shows a proportional relationship between x and y?
Its the first answer because 7 divided by 1 = 7, 14 divided 2= 7, 28 divded 4 = 7
35 divided by 5 equals to 7
Its constant the number stays the same
Eric goes to the store to buy ingredients for dinner. He needs ground beef, shredded cheese, salsa, and tortillas. The ground beef costs $3.79, the shredded cheese costs $2.69, the salsa costs $3.77, and the tortillas cost $1.50. He has the following coupons: off ground beef, $0.50 off shredded cheese, and $1.00 off salsa.
Part A: What is the total cost of the items before Eric uses the coupons?
Part B: What is the total of all of the coupons?
Part C: How much will Eric pay after he uses the coupons?`
Answer:
part.a 11.75
part.b 1.50
part.c 10.25
Step-by-step explanation
first you do is add your original prices first
then you go back to your percentages and sense the ground beef doesn't have a coupon off its the original price for that
and your coupons added up deduct from the price and 10.25 is your new answer
Use the figure to find the measure of <6. Explain your reasoning.
2 points
152
2
4
5
6
8
S
Your answer
Answer:
∠ 6 = 28°
Step-by-step explanation:
152° and ∠ 5 are corresponding angles and are congruent, then
∠ = 152°
∠ 5 and ∠ 6 are adjacent angles and are supplementary, thus
∠ 6 = 180° - 152° = 28°
N is an interger what are the possible values of n A-, -2 ,-1, 0, 1, 2 ,3 ,4 ,5 ,6 B-, -1 ,1 ,2 ,3, 4, 5 ,6 C-, -2, -1 ,0 ,1, 2, 3 ,4, 5 D- ,-2 ,-1 ,0, 1 ,2, 3, 4, 5, 6, 7 E-, -1 ,0 ,1 ,2, 3 ,4 ,5 ,6
Answer:
All options have possible values of an integer
Explanation:
From the above options given all options are integers. An integer is a whole number, that is a number that is not a fraction or a decimal number. An integer can be negative, positive or zero such as the above given numbers. Here there are no fractions such as 1/4 or improper fractions as 1 3/4 or decimal numbers as 2.543, therefore all options are correct.
Simplify the expression.
–9 – 6(w + 5)
A. –15w + 5
B. –15w + 30
C. –6w – 39
D. –6w + 21
Answer:
C. -6w-39
Step-by-step explanation:
Answer:
the correct solution is C.-6w-39
Explain the differences between a slope of 4 and a slope of 1/3
Answer:
Slope of 4 is way steeper that 1/3 but they are both positive slopes.
Step-by-step explanation:
Hope this helps. Pls give brainliest.
A suitcase marked at $40 was sold at $32. What was the percentage of discount for the suitcase?
Answer:
Step-by-step explanation:
32/40
=0.8
so it's 20% off since it's a decay.
Most intruments produce notes across ranges called octaves which are made up of 8 notes how many octaves do 51 notes span?
Answer: 51 notes span 6 octaves.
Step-by-step explanation:
The word "octave" is a Latin word that means "eight".
In an instrument, Each octave is made up of 8 musical notes.
If we have 51 notes , the number of octaves can be made in it = [tex]\dfrac{51}{8}[/tex]
[tex]=6.375\approx6\ \ \ \ \ \text{[Rounded to the nearest whole number]}[/tex]
Hence, 51 notes span 6 octaves.
Plzzzz helppp!! Determine the type of triangle that is drawn below
isosceles Acute
Step-by-step explanation:
I think I'm pretty sure that right sorry if I'm wrong
30 divided by 2313. Please work out the answer for me. Thanks You!
Answer: it’s 77.1 plz mark me brainliest
thos was super hard to do
Step-by-step explanation:
Encuentra la ecuacion de la parabola con vertice en el origen y foco en las cordenadas 0,1en su forma ordinaria y general
Answer:
[tex]x^{2}=4y[/tex]
[tex]y=\frac{1}{4}x^{2}[/tex]
Step-by-step explanation:
Forma ordinaria
La ecuación de la parabola de manera ordinaria está dada por:
[tex](x-h)^{2}=4p(y-k)[/tex] (1)
Donde:
(h,k) es la coordenda del vértice, en nuestro caso (0,0) ya que está en el origen.(h,k+p) es la coordenda del foco, en nuestro caso (0,1).Por lo tanto h = 0, k = 0 y p = 1.
Remplazando estos valores en la ecuación de la parábola, tenemos:
[tex](x-0)^{2}=4*1(y-0)[/tex]
[tex]x^{2}=4y[/tex] (2)
Forma general
La forma general de una parábola esta dada por la siquiente ecuación
[tex]y=ax^{2}+bx+c[/tex]
Reordenando la ecuación (2) tenemos:
[tex]y=\frac{1}{4}x^{2}[/tex]
Espero esto te haya ayudado!
8x - 3 = 16x - 33 find x
Answer:
The answer is x=15/4
Step-by-step explanation:
8x - 3 = 16x - 33
8x−3−16x=16x−33−16x
−8x−3=−33
−8x−3+3=−33+3
−8x=−30
−8x/-8=−30/-8
x=15/4
The value of the x for the equation 8x-3=16x-33 is 3.75.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
The given equation is,
8x-3=16x-33
Simplify the equation,
⇒33-3 = 16x-8x
⇒30 = 8x
⇒8x = 30
⇒x = 3.75
The value of x is 3.75.
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find the slope of the line graphed below
Answer:
-3/2
Rise over run!
Can any kind soul help me
9514 1404 393
Answer:
18
Step-by-step explanation:
There are two areas where the circles P and C overlap. One is labeled "4" and the other is labeled "3x". The sum of these two values is the number of people who like Pop and Classical music, 13.
4 + 3x = 13
3x = 9 . . . . . subtract 4
x = 3 . . . . . . divide by 3
__
We are asked to find the number of people who like two types only. The three regions where only two circles overlap are labeled x, 3x, and 6. The answer to the question is the sum of these values.
like 2 types only: x +3x +6 = 4x +6 = 4(3) +6 = 18
18 students like two types of music only.
Is this correct please some one
Answer:
Yes this is right (Hope this helps)
Step-by-step explanation:
(Brainliest)
18 Which expression uses the greatest common factor and distributive property to write 18 1 24 as a product? Circle the letter of the correct answer.
Answer:
[tex]18 + 24 = 6 * 7[/tex]
Step-by-step explanation:
Given
[tex]18 + 24[/tex]
Required
Write as a product
Start by expanding the expression with a common factor
[tex]6 * 3 + 6 * 4[/tex]
Factorize:
[tex]6 ( 3 + 4)[/tex]
Express 3 + 4 as 7
[tex]6 (7)[/tex]
Convert () to multiplication
[tex]6 * 7[/tex]
Hence:
[tex]18 + 24 = 6 * 7[/tex]
Factorise y² + 5y-84
Answer:
(y-7) (y+12)
Step-by-step explanation:
Factor y2+5y−84y2+5y-84 using the AC method.
Express 25 as power with base 5
Answer: express a number in base 5 notation you need to write it in powers of 5. ... 52 = 25 53 = 125 54 = 625. 625 is larger than 613 so I only need a 53 digit, a 52
Step-by-step explanation:
Answer:
POWERS OF 5:
.52 = 25
53 = 125
54 = 625
So 625 is larger than 613
so you will only need 53
but then you also will have 52 so you have 52 as your answer i hope this helps :)
Samantha Villegas is making pupusas to raise funds for the 9th grade academy. She goes to numero uno market with $12 to buy some ingredients. Samantha gets flour that cost 7.45. She also needs cabbage to make the curtido the cabbage cost 85 cent per pound. How many pounds of cabbage, for curtido could Samantha buy ?
Answer:
Money she has = 12$ = 12*100 = 1200 Cent
cost of flour = 7.45 $ = 745 Cent
Remaining money = 1200-745 = 455 Cent
cost per pound of cabbage = 85 Cent
Total pound of cabbage that can buy = 455/85 = 5.35 pound
The following is a list of heights for 6 six-year-olds.
50 inches, 47 inches, 36 inches, 42 inches, 47 inches, 45 inches
The median height for these children is 46 inches.
What would happen to the median height if the 50-inch measurement was changed to 47 inches?
A. The median would increase.
B. The median would decrease.
C. The median would stay the same.
D. The median would decrease, then increase.
Answer:
option b the median would decrease
Find the perimeter of a square garden if it’s area is 1369m2?
Answer:
Step-by-step explanation:
The area formula for a square is
[tex]A=s^2[/tex] where A is the area and s is a side measure. In a square, this side measure is the same (because all 4 sides in a square are the same). Therefore, our formula becomes:
[tex]1369=s^2[/tex]
Take the square root of both sides to find that a side measures 37 m.
The perimeter of a square is to add all 4 sides together (or to multiply the one side by 4):
4 * 37 = 148 m
A restaurant has 44 waiters on permanent staff. It hires some temporary waiters during busy times of the year. Let t represent the number of temporary waiters and w represent the total number of waiters. Find the value of w when t=5.
Step-by-step explanation:
Since Total workers = Permanent + Temporary workers,
w = 44 + t.
Hence when t = 5, w = 44 + 5 = 49.
A like with a positive slope is parallel to one of the lines shown. What is its slope? Use the graph shown below. The slope is:
Answer:
The first line (blue) has a slope of 2/3x The slope of the second line is decreasing and hence has a slope of -3xRate positively and give brainlistUsing mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be _____.. a. $8.20 b. $10.30 c. $12.30 d. $16.40 Please select the best answer from the choices provided A B C D
Step-by-step explanation:
The approximate tip is - 12.30$
Because bill is 81.79$
and tip - 15%
therefore bill amount divided by 15/100
==> 81.79* 15% is 12.30$
Peter leaves work and drives 10miles due south he then heads east for 11 miles to reach his home how far is Peter home from where he works round answer to nearest tenths place
Answer:
14.9 miles
Step-by-step explanation:
In the image below, the side of the triangle a, represents; "Peter leaves work and drives 10miles due south".
The side of the triangle b represents; "he then heads east for 11 miles to reach his home"
The distance between his work and home is represented by side c of the triangle.
This is a tight angle triangle, hence pythagoras theorem would be applied in solving it.
This theorem states that the square of the hypotenuse of a right angle triangle is equal to the sum of the squares of the other two sides;
This means we have;
c² = a² + b²
c² = 10² + 11²
c = √(100+121)
c = 14.87
Rounding off to the nearest tenths = 14.9
Sally paid $2.40 for 4 ounces of cinnamon. If there are 16 ounces in 1 pound, how much does cinnamon cost per pound
Answer:
$12.80 per pound
Step-by-step explanation:
Since there are 16 ounces in 1 pound, we multiply $0.80 by 16 ounces to find how much cinnamon costs per pound. The answer is $12.80.
Hope this helped, Have a Wonderful Day!!
Answer:
$9.60 per pound
Step-by-step explanation:
- 4 ounces = 2.40 each
- 2.40 x 4 (4 because 4x4 is 16 and there are 16 ounces in a pound)
= $9.60
A collector has 100 movie posters and 80 band posters. She wants to sell 30 movie posters but still have her poster collection maintain the same ratio of 100:80. If she sells 30 movie posters, how many band posters should she sell? Complete the explanation to find out how many band posters she should sell.
Answer: 24 band posters should be sold
Step-by-step explanation:
First take the expression down to its simplest form;
= 5:4
Assume she sells 30 movie posters, her movies posters drop to;
= 100 - 30
= 70 movie posters
We need a number of band posters remaining that will give a ratio of 5:4 with movie posters.
In fraction form, the number of movie posters is;
= 5/9 because 9 would be the total number of both movie posters and band posters.
Create an expression to find the total number of posters if 70 are movie posters;
5/9x = 70
x = 70 ÷ 5/9
x = 126 posters
Number of band posters that should be left are;
= 126 - 70
= 56
Number of band posters that should be sold;
= 80 - 56
= 24 posters
The new ratio would be 70:56.
