Answer:
x = 20% acid = 60 ml
y = 45% acid = 40 ml
Step-by-step explanation:
Let
x = 20% acid
y = 45% acid
x + y = 100 (1)
.20x + .45y = .3 ×100
.20x + .45y = 30 (2)
From (1)
x + y = 100 (1)
x = 100 - y
Substitute x = 100 - y into (2)
.20x + .45y = 30
.20(100 - y) + .45y = 30
20 - .20y + .45y = 30
- .20y + .45y = 30 - 20
.25y = 10
y = 10/.25
y = 40 ml
Substitute y = 40 into (1)
x + y = 100
x + 40 = 100
x = 100 - 40
x = 60 ml
x = 20% acid = 60 ml
y = 45% acid = 40 ml
If f(x) = 2x - 1, then f(-2) =
Answer:
-5
Step-by-step explanation:
for x=-2
f(x)=2(-2)-1
f(x)=-5
Marisol ears $5 more than Twice what Diego earns babysitting. Let d represent the amount Diego earns, and m represent the amount Marisol earns. Which equation shows how much Marisol earns?
Step-by-step explanation:
this is equation......................
PLEASE ANSWER FOR BRAINLIST!!!!!!!!
Answer:
blue=2
green=1
orange=2
red=5
The line plot below shows data on the total number of hours that each volunteer
spent at a nature center one week. Which question cannot be answered using
the data in the graph?
Volunteer Nours
ht
>
& more
How many volunteers worked a total of 4 hours?
3
How many volunteers worked at the center that week?
Did any volunteers work at least 6 hours but no more than 7 hours?
pid most of the volunteers more or less than hours
Answer:
How many volunteers worked a total of 4 hours?
Step by Step Explanation: Its the right answer i just took the test yesterday and i made a 100%
help asap please!!
Darryl and Ashley are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of holiday wrapping paper. Darryl sold 12 rolls of plain wrapping paper and two rolls of holiday wrapping paper for a total of $94. Ashley sold 13 rolls of plain wrapping paper and one roll of holiday wrapping paper for a total of $89. What is the cost each of one roll of plain wrapping paper and one roll of holiday wrapping paper?
Answer:
Screenshot of work is uploaded.
Step-by-step explanation:
6.
a rectangular room measuring 5.75m by 6.5 in to be covered by whole square tiles,
Calculate the size of each tile and the number of tiles required.
(3mks)
Answer:
Below.
Step-by-step explanation:
The dimensions are 5.75m * 6.5 m
= 575cm * 650 cm.
Finding the GCF:
575 = 5 * 5 * 23
650 = 5 * 5 * 26
- so t he Greatest Common Factor of these 2 is 25cm.
575 / 25 = 23
650 / 25 = 26.
So we need 23 tiles along the width of the room and the length will have 26 tiles.
Each tile with be 25cm * 25 cm. in size and the number of tiles = 23*26
= 598.
#1 Which of the following equations is equivalent to y=3(x-2)+7
A) y=3x+1
B) y=3x-13
C) y=3x-1
D) y=3x+5
Bob order 151/2 pound of cherrys fron the farm,this year they want to order 1 1/4 more pound but then 2/5 of the order they want blue berrys what is the percent
Answer:
Percentage of cherries = 60 %
Percentage of berries = 40 %
Step-by-step explanation:
He orders 15 1/2 pounds every year.
He wants more= 1 1/4 pounds
So the total pounds = 15 1/2 + 1 1/4
= 15 + 1 + 1/2 + 1/4
= 16 + (2+1)/4
= 16 + 3/4
= 16 3/4 pounds
Out of 16 3/4 pounds they want 2/5 part to be of blue berries.
So blue berries = 16 3/4 * ( 2/5)
= 67/4 * ( 2/5)
= 67/10 = 6 7/10 pounds
Amount of cherries= 16 3/4- 6 7/10
= 10 3/4- 7/10
= 10 (15- 14)/20
= 10 1/20 pounds
Percentage of cherries = Amount of cherries/ Total amount * 100
= 201/20 / 67/4 *100
= 201/20 * 4/67 *100
= 201/335 *100
= 60 %
Percentage of berries = 100- 60 = 40 %
. Complete each equation with a number so that the equation has the stated solution(s). a) x^2+7=x^2+_____; no solution
Answer: other than 7
Step-by-step explanation:
Given
Equation is [tex]x^2+7=x^2+?[/tex]
For an equation to have no solution, the missing number can be any number other than 7
because if we put 7 then it justifies the equation i.e. [tex]7=7[/tex] while on the other hand for a number other than 7, it does not justify the equation.
Anika is hiking on a rectengular trail at the nation park there are four resting spots along the corners of the trail on the map they are marked with coordinates of -2,2) 1,2) 1,-2) and -2,-2 if rach unit represents 1 mile find the perimiter of the trail in miles using the coordinates
Answer:
The perimeter is 14 units
Step-by-step explanation:
Given
[tex]A = (-2,2)[/tex]
[tex]B = (1,2)[/tex]
[tex]C = (1,-2)[/tex]
[tex]D = (-2,-2)[/tex]
Required
Determine the perimeter
To do this, we simply calculate the distance between the sides of the rectangle i.e. AB, BC, CD and DA.
Distance (d) is calculated using:
[tex]d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}[/tex]
For AB
[tex]A = (-2,2)[/tex] --- [tex](x_1,y_1)[/tex]
[tex]B = (1,2)[/tex] --- [tex](x_2,y_2)[/tex]
[tex]AB = \sqrt{(-2 - 1)^2 + (2 - 2)^2} = \sqrt{9} = 3[/tex]
For BC
[tex]B = (1,2)[/tex] --- [tex](x_1,y_1)[/tex]
[tex]C = (1,-2)[/tex] --- [tex](x_2,y_2)[/tex]
[tex]BC = \sqrt{(1-1)^2 + (2--2)^2} = \sqrt{16} = 4[/tex]
For CD
[tex]C = (1,-2)[/tex] --- [tex](x_1,y_1)[/tex]
[tex]D = (-2,-2)[/tex] --- [tex](x_2,y_2)[/tex]
[tex]CD = \sqrt{(1 - -2)^2 + (-2 -- 2)^2} = \sqrt{9} = 3[/tex]
For DA
[tex]D = (-2,-2)[/tex] --- [tex](x_1,y_1)[/tex]
[tex]A = (-2,2)[/tex] --- [tex](x_2,y_2)[/tex]
[tex]DA = \sqrt{(-2--2)^2 + (-2-2)^2} = \sqrt{16} = 4[/tex]
So, the perimeter (P) is:
[tex]P = AB + BC + CD + DA[/tex]
[tex]P = 3 +4 + 3 + 4[/tex]
[tex]P = 14[/tex]
The perimeter is 14 units
A.45
B.30
C.90
D.180
E.40
F.55
G.130
H.50
Answer:
m<4=40
Step-by-step explanation:
Supplementary angles form 180 degrees
m<3 is vertical to the 50 degree angle which is equal.
so. m<3=50
m<5=90
90+50=140
180-140=40
m<4=40
Helppp again please ,!,!!
Answer:
The answer's are down below.
Step-by-step explanation:
4 sandwiches and 2 cupcakes are $15.00
5 juices and 4 bagels are $12.50
4 bagels and 5 juices are $11.60
2 bagels and 4 cupcakes are $10.00
Pls help I need this now
Central and inscribed angle practice
Answer:
sorry
Step-by-step explanation:
I don't know what you want , do you want to know how to construct an inscribed angle or what
Please answer this question with explantion.
-35 × -98
Duran is making party favors by placing a circular disk in the bottom of a plastic bag. Each disk has diameter of 6 centimeters. What is the area of the disk to nearest hundredth. ** Use 3.14
A. 18.84
B. 28.26
C. 91.06
D. 113.04
Answer:
B. 28.26
Step-by-step explanation:
Sports Bottle
Original Price
$2.98
SSRO
CICERE
Now 30% off the original price.
Find the sale price.
.
$2.89
Oь
$3.87
$0.89
Od
$2.09
Answer:
Original = $2.98
Sales Price= $2.98* 0.70= $ 2.086
Ans = 2.09 (1dp)
If x + sin^2 theta + cos^2 theta = 4, then what is the value of x?
Answer:
x = 3
Step-by-step explanation:
[tex]x + sin^2 \theta + cos^2 \theta = 4 \\ x + 1 = 4 \\ ( \because \: sin^2 \theta + cos^2 \theta = 1) \\ x = 4 - 1 \\ x = 3[/tex]
a) Expand and simplify the following expression.
x(4x – 5) – 2(x² - 4x + 6)
Answer:
[tex]2x^{2} - 12x -12[/tex]
Step-by-step explanation:
[tex]4x^{2} - 5x - 2x^{2} - 8x -12[/tex]
[tex]2x^{2} - 12x -12[/tex]
Answer:
I love algebra anyways
the ans is in the picture with the steps
(hope it helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Marking brainliest! :p A TV is priced at $798.50. There is a 6% sales
tax rate. What is the sales tax for the
refrigerator in dollars and cents?
Answer:
1277.6
Step-by-step explanation:
798.50 x 0.6 = 479.1
798.50 + 479.1 = 1277.6
Mark Me Brainliest Please! ⭐
please help !! And I'll give brainlist
Answer:
106.6 [tex]cm^{2}[/tex]
Step-by-step explanation:
A = 1/2bh
Is [tex]\frac{x^{2}}{2}[/tex] an equation that can be simplified? If so, what is its simplified form?
Which set of values makes the inequality n > -5 true?
А
{-5, -5.5,-6)
B
{-5, -4.5, -3)
Ć
(-6,0,5)
D
{-6, -7,-8}
Answer:
the answer is c :)
Step-by-step explanation:
A tangent to a circle is a line that cuts it in exactly 1 point.
true or false
Answer:
true
Step-by-step explanation:
because it touches the end of the circle it doesn't intersect in more than one
Please Help
Me solve this question
Answer:
2410.26
Step-by-step explanation:
This is a bit complicated but, you have to take 3.5% of 2,250 (2,250*0.035=78.75). Then add 78.75 to the total (2,250) (2328.75 new total). Next take 3.5% of the new total and repeat that process and you end up with 241.26.
3. What kind of angle is this?
Right Angle
Straight Angle
Obtuse Angle
Accute Anglw
Answer:
That's acute angle
Right angle is exactly 90 degrees
straight Angle is exactly 180
obtuse angle is greater than 90 degrees and less than 180 degrees
acute angle is less than 90 degrees
Tameka is seeking a loan with a simple interest rate of 8% per year. If she borrows $5,000, how much interest will she be charged after 24 months?
Answer:
$800
Step-by-step explanation:
5000 × 8% = $400(interest in a year)
400 × 2 = $800(24 months=2years)
hey i just need an answer and possibly a step by step thanks !!!
Answer: 1517.54
Step-by-step explanation:
So we can divide solving this question into two parts: the 2% compound interest and the 5% compound interest.
We know that the compound interest equations is A = P(1+r/n)^nt where:
A is final amount
P is principal (initial) amount
r is interest rate
n is number times interest compounded
t is number of time periods
Given this, in the 2% compound we know:
A = ?
P = 1200
r = 2%
n = 1 (because it didn't say how many times compounded so we assume 1)
t = 2
This becomes:
A = 1200 (1 + (0.02/1))^ 1 * 2
A = 1248.48
Because we switching to 5% from 2%, we can assume that the final amount from the 2% will be the initial amount in the 5%. Thus:
A = ?
P = 1248.48
r = 5%
n = 1
t = 4 (because there were 6 years in total and we used 2 years for 2%)
This becomes:
A = 1248.48 (1 + (0.05/1))^ 1 * 4
A = 1517.54
What is the probability of the spinner landing on a vowel?
Answer:
What is the probability of getting a vowel (a success) for the spinner shown?
1/3
Suppose you spin the spinner 5 times. means “the probability of getting a vowel on exactly 3 of the spins.”
P(3 successes)
Compute P(3 successes) for 5 spins of the spinner
0.165
Step-by-step explanation:
edge 2022
Your goal is to fill a right circular cylinder shaped bucket with water. The bucket has a radius of 6 inches and a height of 12 inches. If you use a right circular cone with a 3 inch radius and a 4 inch height, how many scoops of water will it take to fill the bucket ?
Answer:
36
Step-by-step explanation:
to answer this question :
determine the volume of the cylinder and the cone. Divide the volume of the cylinder by the volume of the coneVolume of a cylinder = nr^2h
n = 22/7
r = radius = 6
h = height = 12
(22/7) x (6^2) x (12) = 1357.71 in^3
Volume of a cone 1/3(nr^2h)
n = 22/7
r = radius = 3
h = height =
4
(1/3) x (22/7) x (3^2) x (4) = 37.71
1357.71 / 37.71 = 36 times