Answer:
32
Step-by-step explanation:
f(x)= 3(x-2)² + 5
Let x = -1
f(-1)= 3(-1-2)² + 5
Parentheses first
f(-1) = 3(-3)^2 +5
Exponents
f(-1)= 3*9 + 5
Multiply
f(-1) = 27+5
Add
f(-1) = 32
The mass of a piece of aluminum is 250 grams. The density of aluminum is 2.7 g/mL. What is the volume of the piece of aluminum? A. 92.59 mL, B. 247.3 mL, C. 95 mL, D. 0.01
Answer:
LETTER A
Step-by-step explanation:
BECAUSE IF YOU DIVIDE THE 250 GRAMS TO 2.7 G/ML THE ANSWER IS 92.59ml
Answer:
A. 92.59 mL
Step-by-step explanation:
Determine whether the triangles are congruent. Explain your reasoning .
SAS (Side, Angle, Side) or ASA (Angle, Side, Angle)
Answer:
Yes, SAS Theorem
Step-by-step explanation:
The triangles are congruent because of SAS Theorem that states that if two triangles have two sides and the angel in between them congruent the triangles are congruent.
JK≅NM (Side) because the sides have the same measure 74in. they are ≅
∡J≅∡M (Angle) because the angles have same measure 37° they are ≅
JL≅PM (Side) because the sides have the same measures 46in. they are ≅
Which correlation coefficient would indicate a strong negative correlation? a. r = -0.93 b. r = -0.23 c. r = 0.75 d. r = 1.0
Answer:
A. r = -0.93
Step-by-step explanation:
First, if there is a negative correlation, the correlation coefficient will be negative.
This eliminates answer choices C and D, which are positive.
If there is a strong correlation, the correlation coefficient will be closer to 1, or -1 (since the correlation is negative).
Since -0.93 is closer than -0.23 to 1, it has a stronger correlation.
So, the correct answer is A. r = -0.93
What are the integer solutions to the inequality below?
4x+1<5x≤3(x+2)
Answer:
1<x≤3
Step-by-step explanation:
The equation y 55x represents the
relationship between x, the time that a train
travels in hours, and y, the distance the train
travels in miles for Train A. The table
represents the relationship for Train B.
Determine which train is traveling at a faster
rate of speed.
1
2
4
Time (h)
Distance (mi)
45
90
135
180
Answer:
Train A is travelling faster.
Step-by-step explanation:
Train A is going 55mph, and train B is going 45mph according to the table.
I've been stuck on this one for a while. Help pls?
Answer: 1080 cm2
Step-by-step explanation: 9x10= 90| 90x12= 1080 cm2
help pls i beg youuu
Answer:
height = 10 m
Step-by-step explanation:
base area of rectangular pyramid =180 m^2
volume of rectangular pyramid = lwh/3
600 = 180*h/3
600*3 = 180*h
1800/180 =h
10 = h
Answer:
I think the answer to the question is 10
Can someone please give me the answer to this
Answer:
The answer is (4, -6)
Step-by-step explanation:
Point C starts at (2, -5). The triangle moves 2 units right, so 2 + 2 = 4 and 1 unit down, so -5 - 1 = -6
Karen exchanged BDS$2000 and received EC$2700. How much is the value of one BDS$ in EC$
Answer:
Bds$ 1 EC$ 1.34
Step-by-step explanation:
a=8 and b=2.25 but what is k
Answer:
a = 8, b = 2.25, k = 27Step-by-step explanation:
y = abˣPoints on the graph:
(0, 8), (1, 18), (1.5, k)Substitute coordinates into equation and solve for and and b:
8 = ab⁰ ⇒ 8 = a*1 ⇒ a = 818 = 8b ⇒ b = 18/8 ⇒ b = 2.25Find k:
k = 8*[tex]2.25^{1.5}[/tex] = 27Answer:
a=8
b=9/4
k = 27
Step-by-step explanation:
y = ab^x
We know that a is the initial value or when x = 0
We know the point (0,8) so a = 8
y = 8 b^x
Using the point (1,18) for x and y we can find b
18 = 8 * b^1
18/8 = b
9/4 = b
Now
y = 8 * ( 9/4) ^ x
Letting x = 1.5
k = 8 *(9/4)^1.5
k = 27
Exercise 4
Use the pi button on a calculator and give answers to 3's.f.
1. A circle has an area of 15 cm². Find its radius.
2
a
->
2. A circle has a circumference of 190 m. Find its radius.
3. Find the radius of a circle of area 22 km².
4. Find the radius of a circle of circumference 58.6 cm.
5. A circle has an area of 16 mm². Find its circumference.
6. A circle has a circumference of 2500 km. Find its area.
Answer:
1. 2.19 cm
2. 30.2m
3. 2.65 cm
4. 9.33cm
5. 14.2 mm
6.497000km²
Step-by-step explanation:
Use the pi button on a calculator and give answers to 3's.f.
1. A circle has an area of 15 cm². Find its radius.
Area of a circle = πr²
15cm² = π × r²
r² = 15cm²/π
r² = 4.7746482927568605
r = √(4.7746482927568605)
r = 2.1850968612 cm
Approximately to 3 s.f ≈ 2.19 cm
2. A circle has a circumference of 190 m. Find its radius.
The circumference of a circle = 2πr
C = 190m
Hence:
190m = 2πr
r = 190m/2π
r = 30.239439187m
Approximately to 3 s.f = 30.2m
3. Find the radius of a circle of area 22 km².
Area of a circle = πr²
22km² = π × r²
r² = 22km²/π
r² = 7.002817496
r = √(7.002817496)
r = 2.6462837142 cm
Approximately to 3 s.f ≈ 2.65 cm
4. Find the radius of a circle of circumference 58.6 cm.
The circumference of a circle = 2πr
C = 58.6cm
Hence:
58.6cm = 2πr
r = 58.6cm/2π
r = 9.3264796652cm
Approximately to 3 s.f = 9.33cm
5. A circle has an area of 16 mm². Find its circumference.
Step 1
Find the radius
Area of a circle = πr²
16 mm² = π × r²
r² = 16 mm²/π
r² = 5.092958178940651
r = √(5.092958178940651)
r = 2.2567583342mm
Circumference of a circle = 2πr
Circumference = 2 × π × 2.2567583342
= 14.179630807mm
Approximately to 3 s.f ≈ 14.2 mm
6. A circle has a circumference of 2500 km. Find its area.
Step 1
Find the radius
The circumference of a circle = 2πr
C = 2500km
Hence:
2500km = 2πr
r = 2500km/2π
r = 397.88735773km
Area of a circle = πr²
Area of the circle = π ×(397.88735773km)²
Area of the circle = 497359.19716km²
Approximately to 3 s.f = 497000km²
convert 5.764764764 to a rational expression
Answer: 5 and 764 over 999
5764 over 9999
5 and 764 over 99
5 and 999 over 764
Step-by-step explanation:
There are 24 girls in a class.The ratio of girls to boys is 3:8. How many boys are in the class?
A)8
B)9
C)64
D)88
Answer:
the answer is 9.
Step-by-step explanation:
3/8=24
3×3
9
hope it helps
what is the slope of the line graphed below
Answer:
-1/5
Step-by-step explanation:
use the two points and plug into the slope formula:
(y₁-y) divided by (x₁-x)
(2-1) / (-2-3) = 1/-5
slope is -1/5
Volume & surface! May I please have help
Answer:
D
Step-by-step explanation:
surface area of cylinder
=(area of base)×2 + (area of curved surface)
[tex]=(\frac{20}{2} )^{2} \pi[/tex]× 2 + [tex]20\pi[/tex] × 25
=2 × [tex]\pi[/tex] × [tex]10^{2}[/tex] + 2 × [tex]\pi[/tex] × 10 × 25
Awnser this for brainliest.
Answer:
1 is the number that goes in the blank
Step-by-step explanation:
3(2x+1)
Distribute
3*2x+3*1
6x+3
Answer:
3*2x+3*1
6x+3
hope it help
Which is the solution to the inequality?
3
8
15
o b< 2 1
15
Ob>27
o b<3 77
O b>37
Answer:
D (last answer)
Step-by-step explanation:
solve and simply
Finding angles June 23 , 2020
Answer:
angle B = 46 degree
Step-by-step explanation:
since AB and BC are equal in length it means that the given triangle is an isosceles triangle as it's two sides are equal.
since base angle of an isosceles triangle are equal angle A = angle C
angle ACB + 113 = 180 degree
angle ACB = 180 - 113
angle ACB = 67 degree
since angle C is 67 degree angle A is also 67 degree
angle B + angle A = 113 degree (sum of two interior opposite angle is equal to the exterior angle formed)
angle B + 67 = 113
angle B = 113 - 67
angle B = 46 degree
Please last one I promise I need help figuring this out I have been stuck on it for a while I will mark the person that gets the correct answer a brainliest person
Answer:
c
Step-by-step explanation:
how do I solve this?
Answer:
Step-by-step explanation:
Base = 25 ft
height = 8 ft
Area of triangle = [tex]\frac{1}{2}*base * height\\\\[/tex]
[tex]= \frac{1}{2}*25 *8\\\\= 25 * 4\\\\= 100 ft^{2}[/tex]
Answer:
100 ft²
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )
Here b = 25 ( parallel to the base of the rectangle ) and h = 8, then
A = [tex]\frac{1}{2}[/tex] × 25 × 8 = 12.5 × 8 = 100 ft²
Solve the formula d = rt for r.
Please solve both with explanation, I’ll give brainliest
1st and 2nd pictures are for finding area and 3rd picture is for finding perimeter
hope you understood well and if not and you can ask again
please answer and explain the link below
Thanks for the points hope you'll understand
Can someone help me? It's urgent and thank you!
Step-by-step explanation:
the first option is the answer
it can be gotten by multiplying 2/6 by 100%
since there are 2 o's in school
write a statement that indicates that the triangles in each pair are congruent
Answer:
ans:
option Boption Aoption Boption AStep-by-step explanation:
for two triangle to be congruent corresponding sides and angle must be equal
What term must go in the space to complete the statement
Answer:
5v+35 = 5(v+7)
Step-by-step explanation:
5(v+7) = 5v+35
Answer:
5
Step-by-step explanation:
Because
5(v+7)
5v+35..
hope it helps
Does anyone know? Sorry I forgot.
Answer:
Choice D: 6 - r - 6 = - 24 - 6
Step-by-step explanation:
Equation is that sum of 6 and r is -24.
Thus;
6 + (-r) = - 24
6 - r = - 24
To isolate r in this equation, we will subtract 6 from both sides to get;
6 - r - 6 = - 24 - 6
Thus,option D is correct
Adams Stationary sells cards in packs of 6 and envelops in packs of 9. If HyunSik wants the same number of each, what is the minimum number of cards that he will have to buy?
Answer:
54
Step-by-step explanation:
Adam sells stationary cards in pack of 6
And also envelops in pack of 9
Therefore the minimum number of cards he have to buy can be calculated as follows
= 9×6
= 54
Robert is selling his bulldozer at a heavy equipment auction. The auction company receives a commission of 5% of the selling price. If Robert owes $124,850 on the bulldozer, then what must the bulldozer sell for in order for him to be able to pay it off?
Answer:
$131422
Step-by-step explanation:
Given :
Amount owed = $124,850
Commison on sale = 5%
Let :
Sale price of bulldozer = x
Sale price = amount owed + 5% of sale price
x = 124850 + 0.05*x
x = 124850 + 0.05x
x - 0.05x = 124850
0.95x = 124850
x = 124850 / 0.95
x = 131421.05263
To the nearest dollar = $131422
4 1/2 ounces per 3/4 miles
_____ ounces per 1 mile
Answer: 6
Step-by-step explanation:
To get 3/4 miles to 1 mile we must take the reciprocal of the number and multiply it.
[tex]\frac{3}{4}[/tex]×[tex]\frac{4}{3} =1[/tex]
We need to multiply the 4 1/2 ounces by 4/3 too
[tex]4\frac{1}{2}[/tex]×[tex]\frac{4}{3} =6[/tex]
4 1/2 ounces per 3/4 miles
6 ounces per 1 mile
Answer:
6 ouncesStep-by-step explanation:
Let the unknown number be x
[tex]4 \frac{1}{2} \: \: ounces = \frac{3}{4} \: \: miles \\ x = 1 \: \: mile[/tex]
Now simply use cross multiplication to solve it
[tex]4 \frac{1}{2} \times 1 = \frac{3}{4} x \\ \frac{9}{2} \times 1 = \frac{3}{4} x \\ \frac{9}{2} = \frac{3x}{4} \\ [/tex]
Now make x as the Subject
[tex] \frac{9}{2} = \frac{3x}{4} \\ \frac{9 \times 4}{2 \times 3} = x \\ \frac{36}{6} = x \\ 6 = x[/tex]
So the answer is
6 ounces