Answer:
David is 30
Jacob is 9
Step-by-step explanation:
The sum of David and Jacobs age is 39
d + j = 39
d = 39 - j
----------------------
Two years ago David was four times Jacobs age
(d - 2) = 4(j - 2)
d - 2 = 4j - 8
d = 4j - 6
---------------------
Set the equations equal
4j - 6 = 39 - j
5j = 45
j = 9
d = 4(9) - 6
d = 30
1. You go to the local Sport Grill for quarter wings day.
All chicken wings are $0.25. Your waiter also announces
that for your stay there will be an additional 20%
discount on wings. Your table of friends stays there for
2 hours and eats a total of 78 wings. How much do you
expect the bill to be for your wings?
na
Answer:
If the 20% discount is by the hour then the answer would be $11.70 I think.
0.25x78= 19.50
19.50x0.20(20%)= 3.90
19.50-3.90-3.90= 11.70
Hope this helps!
Step-by-step explanation:
In ΔSTU, t = 3.4 cm, u = 6.9 cm and ∠S=21°. Find the area of ΔSTU, to the nearest 10th of a square centimeter.
Answer:
4.2
Step-by-step explanation
Delta
The area of the triangle STU to the nearest of a square centimeter is 4.2 cm².
Area of a trianglearea of the triangle = 1 / 2 tu sin S
where
height = u sin STherefore,
t = 3.4 cm
u = 6.9 cm
∠S = 21°
Hence,
area of the triangle = 1 / 2 × 3.4 × 6.9 sin 21°
area of the triangle = 23.46 sin 21 / 2
area of the triangle = 23.46 × 0.35836794954 / 2
area of the triangle = 8.40731209633 / 2
area of the triangle = 4.20365604817
area of the triangle = 4.2 cm²
learn more on triangle here: https://brainly.com/question/22252675
Anyone wanna help me
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{4(3 + 5) - 3\times9^2}[/tex]
[tex]\mathsf{3 + 5 = \bf 8}[/tex]
[tex]\mathsf{4(8) - 3\times 9^2}[/tex]
[tex]\mathsf{4(8) = \bf 32}[/tex]
[tex]\mathsf{32 - 3\times9^2}[/tex]
[tex]\mathsf{9^2 = 9\times9 = \bf 81}[/tex]
[tex]\mathsf{32 - 3\times 81 }[/tex]
[tex]\mathsf{-3\times81 =\bf -243}[/tex]
[tex]\mathsf{32 - 243}[/tex]
[tex]\mathsf{= \bf -211}[/tex]
[tex]\boxed{\huge\text{= \bf -211}}[/tex]
[tex]\boxed{\boxed{\mathsf{OVERALL\ ANSWER: \bf 4(8) - 3 \times 81 \rightarrow }\huge\text{\bf Option C}}}\huge\checkmark[/tex]
[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
A line that is very close to most of the data points?
a.
line of best fit
b.
bivariate data
c.
scatter plots
Option A: line of best fit
A medical device company knows that the percentage of patients experiencing injection-site reactions with the current needle is 11%. What is the mean of X, the number of patients seen until an injection-site reaction occurs?
3.1289
8.5763
9.0909
11
Answer:
The answer is 9.0909
Step-by-step explanation:
n=1 p=.11
mean = 1/0.11 = 9.0909
The mean of X, the number of patients seen until an injection-site reaction occurs is 9.0909.
What is mean?The mean refers to "the average set of values".
According to the question,
The percentage of patients experiencing injection- site reactions with the current needle is 11%.
Mean = [tex]\frac{sum of the all values}{Total number of values}[/tex]
Total number of values = 11% = 0.11 and n = 1.
Mean = [tex]\frac{1}{0.11}[/tex]
=9.0909.
Hence, the mean of X, the number of patients seen until an injection-site reaction occurs is 9.0909.
Learn more about mean here
https://brainly.com/question/13191507
#SPJ2
Luis needs 3 1/8 cups of blueberries for his pie. A store sells containers of blueberries that each hold 3/4 cups.
How many containers will Luis use to make his pie? Move numbers and a symbol to the lines to create an equation that shows the answer.
Answer:
3 1/8 divided by 3/4 = 4 1/6. basically 5 containers.
10 (27 – 4 4) = 100.0
Answer:
What is your question???
Step-by-step explanation:
In Olympic platform diving, the athletes dive from a platform that is 42 feet above
the water. A diver leaves the platform with an initial vertical velocity of 4 feet per
second. How many seconds does it take for the diver to enters the water?
Answer:
10.5 I think
Step-by-step explanation:
the platform is 42ft so if you divide 42 by 4 you get 10.5
Write the equivalent expression for 3a + 12 using the greatest common factor (for example: for expression 4a + 16, the equivalent expression using the greatest common factor would be 4(a + 4) ).
Answer:
3(a+4)
Step-by-step explanation:
f(x)=4x^2-17x+3 how many distinct real number zeros does f have?
Answer:
2
Step-by-step explanation:
2 distinct real number zeros
Step-by-step explanation:
The discriminant b^2 - 4ac
= (-17)^2 - 4*4*3
= 241
So it has 2 distinct roots.
Need help with school work
Answer:
the answer is 38
Step-by-step explanation:
c=a2+b2=362+152=39
PLEASE HELP IM BEGGINGG
What is the probability that a person whose name starts with the letter "J" will win the
presidency and the vice presidency? Write your answer as a simplified fraction.
Answer:
theres a 66.67%
Step-by-step explanation:
can anyone help????? quick!!
Answer:
C 35 hours
Explanion
5.25+4.75=10 every two days
10/2=5 hours a day
5x7=35 hours a week
Please mark brainliest
Identify the equation of the circle B that passes through (4, -6) and has center (3, -2).
Answer:
solution given :
centre (h,k)=(3,-2)
another point (a,b)=(4,-6)
now
radius =[tex] \sqrt{(3-4)²+(-2+6)²} [/tex]=√17
We have
equation of a circle is:
(x-h)²+(y-k)²=r²
(x-4)²+(y+6)²=17 is a required equation.
I need help ASAP . Brainlist will be given !!
Answer:
5,4 and 4,4
Step-by-step explanation:
Judy and 2 friends won $145.00 at a fundraising raffle! They agreed to share the winnings equally. They received one $100 bill, four $10 bills, and five $1 bills
Answer:
There are 3 friends (Judy + 2 friends) who won $145.00
They want to share the winnings equally, but they got:
one $100 bill
four $10 bills
five $1 bills.
Assuming that they can share only those bills, the only way to share the winnings equally is:
Each friend gets one $10 bill
Each friend gets one $1 bill
Then each one gets $11.
And there is a surplus of:
one $100 bill (that can't be divided)
one $10 bill (that can't be divided)
two $1 bill (that can't be divided)
Then:
There is a common pool of $100 + $10 + 2*$1 = $112
And each one of the 3 friends gets $10 + $1 = $11
In the case where they can change the bills, each friend will get:
$145/3 = $48.33
Find the zeros of the function. Enter the solutions from least to greatest. f(x)=-3x^2+75
Answer:
Step-by-step explanation:
-5
5
Answer:
-5 and 5
Step-by-step explanation:
I used a graphing program to graph the function.
The x-intercepts of the graph are (-5, 0) and (5,0).
The zeros of the function are -5 and 5.
Hope this helps.
5^2+5^2=c^2 solve pythagorean theorem
Answer:
[tex]\sqrt 50[/tex]
Step-by-step explanation:
another easy math no scam links
Answer:
Step-by-step explanation:
x = 8
surface area of prisms. please help with the work shown because i can't figure out how to solve these :(
here: :)
I did the work, and basically i solved for the area of the faces and then multiplied that by two to get the total surface area of the faces. Then I added in the areas of the sides connecting the two faces:
just as a referral: the formulas to find the faces are as follows:
rectangle: length times width
circle: pi x r^2
trapezoid: h(base1 + base2)
and triangle: (b x h)/2
Doug has $800 in his checking account. He spends
$40 each day out of the account
Which inequality can be used to find d,
the number of days it will take until his account has
less than $200 dollars in it?
A) 400-800 < 200
B) 400-800 < 200
C) 800+400 < 200
D) 800+40ds 200
E) 800-40d < 200
F) 800-40d s 200
Students, draw anywhere on this slide!
Determine a series of transformations that would map figure F onto figure G.
PLEASE ASAP
Answer:
reflection, translation
Step-by-step explanation:
I can explain it if you want if you reply to this but since you are in a hurry that'll take too long to type right now haha
Peter has a coupon for 15% off the price of any item in a sporting goods store. He wants to buy a pair of shoes that are priced at $36.99. About how much will the shoes cost after the discount.
Answer:
$31.43
Step-by-step explanation:
If you take 15% of 36.99 you get around 5.56. So all you have to do is subtract that from the original amount.
Use substitution method to solve for x and y.
y = -8x -23 ...........(i)
y = 4x + 1 ............(ii)
Answer:
X=-2, y=-7
Step-by-step explanation:
A train travels 120 mi in 1 hour and 20 minutes. How many miles will the train go in 6 hours traveling at the same rate?
Answer: 541.32 miles
Step-by-step explanation:
First find the speed of the train in miles per hour.
1 hour 20 minutes needs to be converted to decimal:
= 1 20/60
= 80/60
= 1.33 hours
Speed is:
= Distance / Time
= 120/ 1.33
= 90.22 miles an hour
If the train is traveling 6 hours at the above speed, it will travel:
= Speed * time
= 90.22 * 6
= 541.32 miles
What is the value of x if 4x - 2 < 26?
Answer:
4x<28
x<7
x;(-infinite,7)
which equation represents the parabola?
What is the inverse function of f(x)=x^3+8
Answer:
[tex]\sqrt[3]{x-8}[/tex]
Step-by-step explanation:
y-8 = x^3
// -8 on both sides
[tex]\sqrt[3]{y-8}[/tex] = x
// cube root both sides
// then just switch x and y
Answer:
Step-by-step explanation:
[tex]f^{-1}(x)=\sqrt[3]{x-8}}[/tex]
find the surface area, and please show me steps so i can understand this myself !
Answer:
The surface area of the triangular prism is approximately 401.582 square feet.
Step-by-step explanation:
The figure represents a triangular prism, the procedure for calculating the surface area of the entire figure consists in adding the areas of each face (3 rectangles and 2 triangles):
[tex]A = 2\cdot \left[\frac{1}{2}\cdot (9\,ft)\cdot (4\,ft)\right] + (16\,ft)\cdot (4\,ft) + (9\,ft)\cdot (16\,ft) + (16\,ft)\cdot \sqrt{(9\,ft)^{2}+(4\,ft)^{2}}[/tex][tex]A \approx 401.582\,ft^{2}[/tex]
The surface area of the triangular prism is approximately 401.582 square feet.
Solve for p.
2p + 1=1
5p + 6=7
Answer:
-1/9
Step-by-step explanation:
We need to solve out and find out the value of p . The given equations is.
=> 2p + 1/ 5p + 6 = 1/7
=> 7 ( 2p + 1) = 5p + 6
=> 14p + 7 = 5p + 6
=> 14p - 5p = 6-7
=> 9p = -1
=> p = -1/9
• Hence the value of p is -1/9