Answer:
45 litres
Step-by-step explanation:
Let the whole tank contains x litres of water.
Therefore,
[tex] \frac{2}{3} x = 80 \\ \\ x = 80 \times \frac{3}{2} \\ \\ x = 40 \times 3 \\ \\ x = 120 \\ \\ \frac{3}{8} x = \frac{3}{8} \times 120 \\ \\ = 3 \times 15 \\ \\ = 45 \: liters[/tex]
The area of a rectangle is 258.6 m2. If the length is 15 m, what is the perimeter of the rectangle?
258.6÷15=17.24
2·15+2·17.24=30+34.48=64.48.
I’m having trouble with this plz help.
Answer:
The answer is 56. Here's why:
Step-by-step explanation:
Pythagorean Therom works for any right triangle, and it states (a)²+(b)²=(c)². A and B are the height and base, and C is the hyptoanuse. We don't know the height, but we know the rest of the information:
(a)²+(33)²=(65)². This simplifies to (a)²+1089=4225. If we subtract 1089 from each side, we get (a)²=3136. The √3136 (Sqaure root of 3136) is 56.
Find all zeros f(x) =x^4-x
Answer:
0 and 1
Step-by-step explanation:
Answer:x=−4,x=0,x=5
Step-by-step explanation:
take out a common factor of
x
2
f
(
x
)
=
x
2
(
x
2
−
x
−
20
)
the factors of - 20 which sum to - 1 are - 5 and + 4
⇒
f
(
x
)
=
x
2
(
x
−
5
)
(
x
+
4
)
to find zeros set
f
(
x
)
=
0
⇒
x
2
(
x
−
5
)
(
x
+
4
)
=
0
equate each factor to zero and solve for x
x
2
=
0
⇒
x
=
0
with multiplicity 2
x
−
5
=
0
⇒
x
=
5
x
+
4
=
0
⇒
x
=
−
4take out a common factor of
x
2
f
(
x
)
=
x
2
(
x
2
−
x
−
20
)
the factors of - 20 which sum to - 1 are - 5 and + 4
⇒
f
(
x
)
=
x
2
(
x
−
5
)
(
x
+
4
)
to find zeros set
f
(
x
)
=
0
⇒
x
2
(
x
−
5
)
(
x
+
4
)
=
0
equate each factor to zero and solve for x
x
2
=
0
⇒
x
=
0
with multiplicity 2
x
−
5
=
0
⇒
x
=
5
x
+
4
=
0
⇒
x
=
−
4
2 - 2 help pls ill give you brainliest
Answer:
0..........
Step-by-step explanation:
helpp me thx show work
Answer:
x= 25°
Step-by-step explanation:
3x-10 = 25 + x + 15 (ext ∠ of triangle equals to the sum of interior opposite ∠'s)
3x - x = 40 +10
2x= 50
x= 50/2
x= 25°
Beth used 1 1/4 tubes of glue on her science project. Each Tube holds 1/3 ounce of paint. Write an equation to represent the situation. How many ounces of glue did Beth use?
Answer:
5/12 ounces
Step-by-step explanation:
If each tube holds 1/3 oz of paint, the you multiply 1/3 by the number of tubes that she used. 1/3oz/tube(1.25 tubes)= 5/12 ounces
a=960 rounded to the nearest 10
b=89.0 rounded to 1 DP
Find the minimum (to 2 DP) of a÷b
Step-by-step explanation:
a÷b=960÷89=10.78651685=10.79 or 17.8
Barbara wants to buy some glittery heart-shaped beads to make friendship bracelets. The beads she wants come in a small pack with 90 beads or a large pack with 300 beads. The small pack costs $3.60, while the large pack costs $9.00. Which pack is the better value? small pack ll large pack
Answer:
The large pack is a better deal!
Step-by-step explanation:
so first we need to figure out how much the individual beads cost.
Small pack: $ 3.60÷90 = 0.04 cents per bead
Large pack: $9.00 ÷ 300 = 0.03 cents per bead
Hope this helps!!
Have a great day!!
Is this correct and if not what am I missing?
Answer:
Yes you are correct
The peak is at 5
Step-by-step explanation:
The difference between the roots of the quadratic equation x^2-14x+q=0 is 6. Find q.
Answer:
The value of q is 40
Step-by-step explanation:
In the quadratic equation ax² - bx + c = 0, where
a = 1
b is the sum of its two roots
c is the product of its two roots
Assume that the roots of the quadratic equations are x and y
∵ The quadratic equation is x² - 14x + q = 0
∴ a = 1 , b = 14 and c = q
∵ b is the sum of its two roots
∵ Its roots are x and y
∴ x + y = 14 ⇒ (1)
∵ The difference between the roots is 6
∴ x - y = 6 ⇒ (2)
Now we have a system of equation to solve it
Add equations (1) and (2)
∴ 2x = 20
- Divide both sides by 2
∴ x = 10
Substitute the value of x in equation (1) or (2) to find y
∵ 10 + y = 14
- Subtract 10 from both sides
∴ y = 4
∵ c is the product of the two roots
∴ c = 10 × 4 = 40
∵ c = q
∴ q = 40
The value of q is 40
A right square prism has a volume of 220 cubic meters. The prism is enlarged so its height is increased by a factor of 10, but the other dimensions do not change. What is the new volume?
A. 2200m³
B. 1450m³
C. 1200m³
D. 1580m³
Answer:
B.
Step-by-step explanation:
your welcome
Can someone please help me????
Help hurry !!!!! I need this
Answer:21
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
PLEASE HELP I HAVE ANOTHER ONE NEEDED DONE if you answered last time lol.
A: Positive Correlation
B: Negative Correlation
C: No Correlation
What type of correlation is show in the scatter plot?
Answer:
B
Step-by-step explanation:
Can someone help me pls?
I will mark you brainliest
I need help with this one please
Answer:
plot $30 on the line above one and plot $50 on the line above two and keep doing the same thing
Step-by-step explanation:
Plot the data first using the results above, so u can draw the line,
Then u can answer the questions, if the line goes through all the points its proportional, vice versa
what is 100x100 because im having real trouble
Answer:
10000
here you gooooooooo
Answer:
100x100=10000
Janelle made ordered lists of the heights, in inches, of the students in Ms. Carver’s and Mr. Wright’s homerooms. She found the two lists had the same median value, but the list from Ms. Carver’s class showed greater variability. If the shortest student in Mr. Wright’s homeroom is 48 inches tall and the tallest student is 64 inches tall, what could be the heights of the shortest and tallest students in Ms. Carver’s homeroom?
46 inches and 61 inches
47 inches and 66 inches
52 inches and 63 inches
53 inches and 68 inches
Answer:
47 inches and 66 inches
Step-by-step explanation:
took test
What percent is 72 out of 120?
WILL MARK BRAINLIEST!!!
Answer:
The last one.
Step-by-step explanation:
If you can't see or there's something you don't understand you can ask:) Good luck and I hope it helps.
Please help me solve this :((
Answer:
Step-by-step explanation:
hello :
cosθ = 72.90/125.00
cosθ = 0.58
θ= cos-1(0.58)
θ = 54.55°
does anyone know equivalent expressions for these: y+4t+5y+3(3t+9y) and 9(y+4y+5)
Answer:
y + 4t + 5y + 3 (3t + 9y) = 13t + 33y
9 (y + 4y + 5) = 45y + 45
Suppose you want to put trim around the floor of a rectangular room.
The room is 7 by 11 feet. If a foot of trim costs $6, how much will the
trim cost altogether?
PLSSS HELPPP ASPPPPPPPPPP
Answer:
question 2: exponential, question 3 is linear, also there is a site called desmos and that has a scientific calculatior and graphing calculator, the graphing calculator can help you with questions like these, all you have to do is put the points
-6= b/18 does any one no this
Answer:
The correct answer is b = -108
Solve for b by simplifying both sides of the equation, then isolating the variable.
~Hoped this helped~
~Brainiliest, please?~
Answer:
[tex]b = - 108[/tex]
Step-by-step explanation:
[tex] \frac{b}{18} = - 6[/tex]
Lets multiply both the sides by 18.
[tex] = > \frac{b}{18} \times 18 = - 6 \times 18[/tex]
[tex] = > b = - 10 8[/tex]
PLEASE PLEASE HELP NOWWW NOWW
Answer:
14
Step-by-step explanation:
8x-1 = 7x+13
type it into desmos next time
help me please! Eddie and Lisa go on a road trip. When they start driving, the time is 2:02 pm. When the drive ends, the time is 4:15 pm.
How long is the drive?
Enter your answer by filling in the boxes
The product of x and 6 is less than or equal to 24.
Answer:
x= 4 or <
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
help me and explain it
Answer:
0.5
Step-by-step explanation:
how you would solve this is 5 plus 3 plus 2 which will equal 10 (this ten will be your denominator) after that you look at how many blue sections there are (5). so 5 out of 10 of them are blue so your fraction would be 5/10. then you will reduce the fraction to 1/2. the question wants you to put this in decimal form so you will divide the 1 by 2 so in decimal form this is 0.5.
Eh so im confused on this question ill give brainliest.
Answer:
the perimeter is 28 and the area is 49
Step-by-step explanation:
a square has equals sides and i counted seven on each side for the perimeter. you multiply seven by seven to find the area
Answer: this is a square with 7 units on each side
Area = 7^2 = 49 units^2
Perimeter = 7 x 4 = 28 units
Step-by-step explanation:
Brainliest plz