Answer:
Answer:
a. 16
b. 80
c. Blood type AB
Step-by-step explanation:
Given:
O = 45%
A = 40%
B = 11%
AB = 4%
Total number of donors = 145
a. No. of donors that had type B blood =
Type B blood donors ≈ 16
b. No. of blood donors without blood type O =
Those without blood type O ≈ 80
c. Find the number of people that had type AB:
Type AB = ≈ 6. This is less than 10 donors.
Therefore, blood type AB had less than 10 donors.
Find the value of a.
3x3x3x3x3 x 3 x 3 x 3 = 3a
At one store, a 2-liter bottle of soda costs $2.12. At another store, a 3-liter bottle costs $3.15. Which bottle is a better deal? Write a division equation for each 2-liter bottle, and then decide which is the better deal.
Answer:
The 3 liter bottle has a better deal
Step-by-step explanation:
Which bottle is a better deal?
For the 2 liter bottle
At one store, a 2-liter bottle of soda costs $2.12.
2 liter bottle = $2.12
1 liter bottle = x
Cross Multiply
2x = $2.12
x = $2.12/2
x = $1.06
Hence, this is $1.06 per liter
For the 3 liter bottle
At another store, a 3-liter bottle costs $3.15.
3 liter bottle = $3.15
1 liter bottle = x
Cross Multiply
3x = $3.15
x = $3.15/3
x = $1.05
Hence, this is $1.05 per liter
Therefore, the bottle which is a better deal is the 3 liter bottle because, 1 liter goes for $1.05
If the legs of a right triangle are x, (2x - 1) and its hypotenuse is (2x + 1), what is the value of x?
Answer:
x=8
Step-by-step explanation:
(2x + 1)² = x² + (2x - 1)² = x² + (2x - 1)(2x - 1)
(2x + 1)(2x + 1) = x² + 4x²-2x-2x+1
4x²+2x+2x+1 = 5x²-4x+1
4x²+4x+1 = 5x²-4x+1
0= 5x²-4x²-4x-4x+1-1
0= x²-8x
x²-8x=0
x²=8x
x=8
a restaurant customer left $1.80 as a tip. The tax was 8% and the tip was 20% of the after tax cost
Divide tip by portion of bill:
1.80/0.20 = 9.00
The total bill before the tip was $9.00
Divide total bill by 1+ sales tax rate:
9.00 / 1.08 = 8.33
The bill before tax was $8.33
Find the sum of -10x^2 - x + 6 and 10x^2 - 5
Answer:
-x+1
Step-by-step explanation:
-145.035 ÷ 75 I’ll give you brainliest :p
Answer:
[tex]-1.9338[/tex]
Step-by-step explanation:
Add.
(2x4+x3−4x2+3)+(4x4−2x3−x2+10x+2)
Express the answer in standard form.
Enter your answer in the box.
Answer: 6x^4-x^3-5x^2+10x+5.
Step-by-step explanation:
Answer:
See screenshot
Step-by-step explanation:
19 3/7 - 12 6/7
Plz show how u got your answer
Answer:
16 4/7
Step-by-step explanation:
First, you cant subtract 3/7 from 6/7 so take 1 from 19, which turns it to 18. And add that one to 3/7 to get 10/7, or just add 7 to your numerator. So now you have 18 10/7 - 12 6/7. so subtract 18 - 12 to get 6, and the subtract 10/7 - 6/7 to get 4/7. You dont actually have to subtract the denominator just the numerators, because the denominatos are the same so you leave them just the way they are. I hope this helps :)
The ratio of lemons to lime in a punch is 6:4. If there are 35 fruit in the punch, how many of them are lemons?
Answer:
21 lemons
Step-by-step explanation:
If the ratio is 6:4, the ratio is also equal to 3:2. This means, for every 3 lemons, there are two limes.
So, if there are 35 lemons and limes in total, we would have 21 lemons and 14 limes.
Let me know if this helps!
HELP FOLKS PLEASE ( i don't have much time)
Answer:
tan(Y) = 7/4
tan(Z) = 4/7
Step-by-step explanation:
Tangent ratios are the TOA of SOHCAHTOA.
tan( angle ) = opposite / adjacent
Mrs. Ross, a seventh-grade teacher, has to choose a class representative. There are three girls and five boys who want to be the representative. She decides to roll a six-sided die to select the class representative. In this simulation, the odd numbers on the die represent girls and the even numbers represent boys. The simulation selected is
______, because the result of the experiment and the probability of the simulation ______.
Answer:
the answer is unfair and are not the same
Step-by-step explanation:
I got this right on my test
Given f(x) = x ^ 2 - (3x + 8) Find f(1)
Answer:this problem requires one to plug in the value given to the equation given. to find f(-1) the x in one side of the equation is replaced by a -1 therefore the x in the other side of the equation must also be replaced by (-1) so the answer is -3(-1) -8 = f(-1) = -5. -5 is the correct answer.
Qué número es irracional
V9
V8
0.3333
2/3
Answer:
v8
Step-by-step explanation:
V8 is irrational because its decimal expansion does not end in Os or in repeating decimal digits.
What is the name for a percent that is given or paid in addition to a service?
A. Sales tax
B. Tip
C. Markup
D. Discount
Answer:
its B
Step-by-step explanation:
A laundry basket has 24-shirts in it. Four are navy, 12 are red, and the remaining are white. What is the probability of not selecting a white t-shirt. simplified fraction.
Answer:
The fraction white is one third.
Step-by-step explanation:
Answer:
2/3
Step-by-step explanation:
With 12 of them red and 4 of them navy, it's 12 + 4 = 16 leaving 8, 24 - 16 = 8 and 8 goes into 24 three times so it'd be 1/3 simplified
A-line includes the points (8,9) and (9,1). What is its equation in point-slope form?
Answer:
[tex]y-(9)=(-8)(x-8)\\[/tex]
Step-by-step explanation:
[tex](x_1, y_1) = (8, 9)\\(x_2, y_2) = (9,1)\\[/tex]
Step one: Find the slope (m)
[tex]slope=m=\frac{rise}{run} =\frac{y_2-y_1}{x_2-x_1} = \frac{1-9}{9-8} =\frac{-8}{1} =-8[/tex]
Step two: Plug your known values into the point-slope equation
[tex]m=-8\\y_1=9\\x_1=8\\[/tex]
Point-slope form is [tex]y-y_1=m(x-x_1)[/tex]
[tex]y-(9)=(-8)(x-8)\\[/tex]
If you want to convert point-slope form to general form, isolate for y.
[tex]y-9=-8x+64\\y=-8x+73[/tex]
Please help its due 12:00 Am
Answer:
440h is the expression. When 3 1/4 is evaluated you get 1,430 calories burned.
Step-by-step explanation:
440 represents the number of calories she burns per hour. To represent the hour, we place a variable which is h. After we write the expression, we substitute 3 1/4 for h. When I did this, I turned 3 1/4 into an improper fraction, which was 13/4, and then divided 13 by 4 to get 3.25
Multiple 3.25 by 440 to get an answer of 1,430 calories burned.
Hope this helps :)
help me please ill give brainly
Answer:
y = − 2 x + 3
Step-by-step explanation:
Hope this Helps
Answer:
[tex]y=-2x+3[/tex]
Step-by-step explanation:
[tex]8x+4y=12[/tex]
subtract [tex]8x[/tex] from both sides
[tex]4y=-8x+12[/tex]
divide both sides by [tex]4[/tex]
[tex]y=-2x+3[/tex]
May someone please help me with this :)
Answer:
If 3 parts blue and 2 parts grey make 1 Liter of Paint, then 6 parts blue and 4p parts grey make 2 Liters of Paint
Step-by-step explanation:
Write an equivalent expression by distributing the "_" sign outside the parentheses-(6p-7.2)
HELP ASAP 40 POINTS
What is the equation for the nth term or the sequence
And what is the 74th term of the sequence.
Answer:
530
Step-by-step explanation:
19 + (n-1)26-19 = an
19 + 7n - 7 = an
12 + 7n = an
given n = 74
12 + 7(74) = an
530.
A package of face mask was on sale for 1200 . This was 3/4 of the original price. What was the original price
Answer:
900
Step-by-step explanation:
Assume segments that appear to be tangent are tangent. Find the mZTUV = *
T
S
U
95
V
Your answer
Answer:
I think it would be 190 let me know if im correct((:
Step-by-step explanation:
Construct the bisector of the following figures
Answer:
In these lessons, we will learn
how to construct an angle bisector of a given angle.
how to use an angle bisector to construct some angles for example, 90 degrees, 45 degrees, 60 degrees, 30 degrees, 120 degrees, 135 degrees, 15 degrees.
An angle bisector is a straight line that divides the angle into two equal parts.
Example: Construct an angle bisector for the following angle:
Solution:
Step 1 : Put the sharp end of your compasses at point B and make one arc on the line BC (point S) and another arc on line AB (point T).
Step 2 : Put the sharp end of the compasses at S and make an arc within the lines AB and BC. Do the same at T and make sure that the second arc intersects the first arc.
construct angle bisector
Step 3 : Draw a line from point B to the points of intersection of the 2 arcs. This line bisects ∠ABC.
construct angle bisector
The steps to construct an angle bisector can be summarized as follows:
1. From the vertex, draw an arc across both rays of the angle.
2. From each arc intersection draw another pair of arcs that intersect each other.
3. Draw a line from the vertex to the intersection point to form the angle bisector.
Step-by-step explanation:
What is 105354.00085 x 17
A dance club had 160 members. There was a membership increase of 5%. How many new person's joined the club.
Jason bought a shirt at Target for $45. He has a coupon for 30% off. How much did he pay in total after using the coupon?
Answer:
31.5 dollars !
Step-by-step explanation:
45 times 0.3 = 13.5 (the total amount of discount!)
15-13.5 = 31.5
Hope this helps!
Suppose that a phone that originally sold for $800 and is worth 3/5 of its value each year after it is released. Write an equation for the value of the phone, y years after it is released.
Answer:
v = 800 - 3/5y
Step-by-step explanation:
v = value
y = years
The original cost/value was 800 dollars which means you would have to subtract the 3/5 decrease in value each year.
v = 800 - 3/5y
Answer:
800/(y*3/5)
Step-by-step explanation:
What is the acceleration of Romeo's 900 kg horse if it moves with a force of 9000N?
Question 1 of 10
Which of the following best describes the slope of the line below?
O A. Negative
O B. Zero
O C. Undefined
O D. Positive
Answer:
C underfined
Step-by-step explanation:
I just took the test