Answer:
1/24
Step-by-step explanation:
Pls mark me the brainiest thx.
Hope this helps!
What is the ratio of boys to girls in Mrs. Carlton's class, which has a total of 31 students, 14 of whom are girls?
Answer:
17:14 or 17 to 14
Step-by-step explanation:
since you know there are 14 girls, subtract 14 from 31 and then you'll get 17. since its asking for a ratio of boys to girls not girls to boys, you put boys first, then girls. so your answer will be 17:14
What is the length of the the midsegment of a trapezoid with bases of length 14 and 22?
The length of the midsegment of a trapezoid with the given bases is
Answer:
it would be about 138 for the hole thing
Step-by-step explanation:
PLZ NEED HELP NOW TAKING TEST 40 POINTS
Two trains are traveling between city A and city B a distance of 4000 kilometers (km). The regular train travels at a speed of 80 kilometers per hour (km/h). The express train leaves at the same time on a parallel track and travels at 100 km/h. The formula for speed (S) is S=D/T where S is speed, D is distance and T is time. How much earlier will the express train arrive at city B?
10 HOURS
40 HOURS
50 HOURS
90 HOURS
Answer:
40 hours
Step-by-step explanation:
first i want to know the answer i think it is 40 hours or 10 hours or 50 or maybe 90 hours
y= 1/6x - 1
Find the slope
Answer:
m=1/6
Step-by-step explanation:
Solve for X
9x + 2 = 3
Give your answer as a fraction in its simplest form.
Answer:x=1/9
Step-by-step explanation:
1. subtract 2 from both sides
9x+2-2=3-2
2.simplify
9x=1
3.Divide both sides by 9
9x/9=1/9
4.simplify
x=1/9
Distance between (-9,-6) and (-6,-8)
Answer:
The distance is....
5
Step-by-step explanation:
Find mZKJL.
K
7x
(3x +
16)0M
mZKJL =
Answer:
The answer is 28.
Step-by-step explanation:
Ok.
☆7x and 3x + 16 are congruent, meaning they equal the same.
☆Since they are equal, we can make an equation out of then.
7x = 3x + 16
☆Then we just solve.
[tex] \: \: \: \: \: \: \: \: \: 7x = 3x + 16 \\ \frac{- 3x = - 3x}{4x = 16} \\ \\ \frac{4x}{4} = \frac{16}{4} \\ \\ x = 4[/tex]
☆Therefore, x equals 4.
☆We are solving for m<KJL so all we need to do is plug in.
[tex]7x \\ 7(4) \\ 28[/tex]
☆You answer is 28.
The required angle is 28°
What is congruence in triangles?Two triangles are said to be congruent if all three corresponding sides are equal and all three corresponding angles are equal in measure. These triangles can be slid, rotated, flipped, and turned to be looked identical. If repositioned, they coincide with each other.
Given here ∠KJL=7x and ∠LJM=3x+16
now in ΔKJL & ΔLJM, JL is common and KL=LM, and by Pythagoras theorem JL²=KL²+JK² & JL²=JM²+LM²
Thus KL²+JK² = JM²+LM²
⇒ JK=JM
Thus by the SSS criterion, we can conclude that the triangles are congruent.
therefore by CPCT 7x=3x+16
4x=16
x=4
so the required angle is 7×4 =28°
Hence, ∠KJL=28°
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A teenager’s heart pumps an average of 7200 L of blood every 24 hours. What is the rate of change of volume of blood?
Answer:
300L per hour
Step-by-step explanation:
The rate of change of volume of blood pumped by the teenager's heart expresses the volume of blood pumped with respect to hour.
Rate of change of volume of blood = [tex]\frac{volume of blood}{time}[/tex]
= [tex]\frac{7200L}{24}[/tex]
= 300L/hour
The rate of change of volume of blood by the teenager's heart is 300 litres per hour. This implies that his/ her heart pumps 300 litres of blood every hour.
Simplify. Write in Standard Form. r²(r+1)-r(2r²-1)
PLEASE EXPLAIN HOW YOU GOT IT!!!!
Answer:
−r^3+r^2+r
Step-by-step explanation:
Let's simplify step-by-step.
r^2(r+1)−r(2r^2−1)
Distribute:
=(r^2)(r)+(r^2)(1)+−2r^3+r
=r^3+r^2+−2r^3+r
Combine Like Terms:
=r^3+r^2+−2r^3+r
=(r^3+−2r^3)+(r^2)+(r)
=−r^3+r^2+r
Sorry i could'nt help
37.
An express train travelled at a certain average speed from Town X to Town Y which was
150 km away. It then continued its journey to Town Z at an average speed 20 km/h faster than
its initial average speed. Town Ywas 200 km from Town Z. If it took the same time to travel for
both parts of the journey, what was the train's average speed for the first part of the journey?
Answer:
60 km/hr
Step-by-step explanation:
Let the speed at the initial average speed from Town X to Town Y be a.
We are told that it journeyed to Town Z at an average speed 20 km/h faster than its initial average speed. Thus, its average speed here is (a + 20) km/hr.
Town Y was 200 km from Town Z.
Thus, time spent here is;
t_2 = 200/(a + 20)
Time from X to Y is; t_1 = 150/a
We are told that it took the same time to travel for both parts of the journey.
Thus; t_1 = t_2
150/a = 200/(a + 20)
Cross multiply to get;
150(a + 20) = 200a
150a + 3000 = 200a
200a - 150a = 3000
50a = 3000
a = 3000/50
a = 60 km/hr
Is the following a function?
{-1,5), (2, 5), (3,5) (8,5)}
Answer:
Yes
Step-by-step explanation:
A function is where each x value maps to one y-value -> and that is true here.
Even though the 5 is repeated, different x-values are used, so that is okay.
It would just be a straight line.
Please help 0.8t+0.6t-t
Answer:
0.4t
Step-by-step explanation:
1.4t-t=0.4t
Hope this helps :)
Answer:
0.4t
Step-by-step explanation:
0.8t + 0.6t = 1.4t
1.4t-1t=0.4t
Please help!!! I need help asap!!!
Answer:
-5
Step-by-step explanation:
A negative times a negative always equals a positive. 5 x 9 = 45
Expand.
Your answer should be a polynomial in standard form.
(9+ m)(-m +9)=
Answer: -1m²+81
Step-by-step explanation:
correct standard form means that the terms are ordered from biggest exponent to lowest exponent.The leading coefficient is the coefficient
of the first term in a polynomial in standard form.
FoR example, (9+ m) (-m+9) = *(m+9) (-m+9) *m(-m+9) +9 (-m+9)* -1.mm+9m +9(-m+9) * -1m² +9m +9(-m+9) *-1m²+9m- 9m +81
answer -1m²+81
PLEASE HELP ASAP!!
When retested on the WAIS, people's second scores generally match their first scores
quite closely. This indicates that the test has a high degree of:
A. Heritability
B. Content validity
C. Predictive validity
D. Reliability
Answer:
D. Reliability
Step-by-step explanation:
Answer:
the answer is b because the same score means more validity
If y = 5, simplify 13y - 10
Answer:
55
Step-by-step explanation:
13(5)=65-10=55
distributive property -8(1+5m)
Answer:
im pretty sure that it is -48 there is a chance im wrong
Step-by-step explanation:
.
I really need help please!
A rectangular book measures 8 X 10. What is the length of its
diagonal?
Answer:
Length of the diagonals is[tex] \sqrt{ {8}^{2} +{10}^{2} } = \sqrt{64 + 100} = \sqrt{164} =2\sqrt{41}\\ =\boxed{12.8\: units} [/tex]
12.8 units is the right answer.The diagonal length of the rectangular book is 12.8 units.
What is rectangular?A rectangle is "four sided polygon, having all the internal angles is equal to 90 degree. The two sides of each corner is right angles".
According to the question,
The length of rectangle is 8 units and the breadth of rectangle is 10 cm.
To find diagonal of the rectangle: Using Pythagoras theorem a² + b² = c².
c = [tex]\sqrt{a^2 + b^2}[/tex]
= [tex]\sqrt{8^2 + 10^2}[/tex]
= [tex]\sqrt{64 + 100}[/tex]
= [tex]\sqrt{164}[/tex]
= 2[tex]\sqrt{41}[/tex]
= 12.8 units
Hence, the diagonal length of the rectangular book is 12.8 units.
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What is the range of the cluster in the scatter plot?
A: Between 4 and 8 years of experience
B: Between 6 and 12 years of experience
C: Between $10,000 and $60,000
D: Between $40,000 and $60,000
Answer:
b
Step-by-step explanation:
Josh is 6 years older than 4 times Kim's age. the sum of their ages is less than 31.
what is the oldest Kim could be?
Answer:
4
Step-by-step explanation:
31 - 6 = 25
25/4 = 5
because its LESS than that, it has to be lower than 5, therefore its 4.
Kim should be 12 years old.
What is inequality?A relationship between two expressions or values that are not equal to each other is called inequality.
Given that, Josh is 6 years older than 4 times Kim's age and the sum of their ages is less than 31.
From the information, let's consider Josh's age be J and that age Kim's be K
As given,
J = 6 + K ..............(i)
And,
J+K < 31
Substituting in eq(i)
6+K+K < 31
2K < 25
K < 25/2
K < 12.5
Since, Kim's age should be less than 12.5
Hence, Kim's age is 12 years.
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help quicklyy pleasee
Answer:
b
Step-by-step explanation:
Answer:
It is B.
Step-by-step explanation:
Hope this helped have an amazing day/month/year!
A: x/8=3/4
B: 2/5=x/40
C: 1/8=x/40
D:x/10=12/15
An object has a mass of 235 g and a volume of 655 cm? What is its density?
Answer:
the answer is 235/655= 0.358778
help please i’ll give brainliest.
ΔABC is similar to ΔFED. Answer the questions to find the length of DF .
1. Which side in ΔFED does AB in ΔABC correspond to?
Write your answer in the space below.
2. Which side in ΔFED does CB in ΔABC correspond to?
Step-by-step explanation:
ΔABC is similar to ΔFED.
AB are the first 2 letters in ΔABC. Similarly, FE are the first 2 letters in ΔFED.
Hence side AB corresponds to side FE.
CB are the last 2 letters in ΔABC. Similarly, DE are the last 2 letters in ΔFED.
Hence side CB corresponds to side DE.
Answer:
1. EF in ΔFED corresponds to AB in ΔABC.
2. DE in ΔFED corresponds to CB in ΔABC.
3. The length of DF is 10.
Step-by-step explanation:
Given: ΔABC is similar to ΔFED. Find the length of DF.
To Find: The length of side DF in ΔFED
Since, ΔFED is a right-angled triangle and also similar to ΔABC,
Applying similarity of triangles principle,
AB = 4 , EF = 8
BC = 3 , DE = 6
Now, applying Pythagorean theorem on ΔFED,
Hypotenuse² = Length² + Base²
⇒ DF² = DE² + EF²
⇒ DF² = 6² + 8²
⇒ DF² = 100
⇒ DF = √100
⇒ DF = 10
Final Answer: Hence the length of side DF is 10.
how do yo do this question I have to
Solve the System by Substitution:
y = x-2
x + y = 4
Answer:
x=3
y=1
Step-by-step explanation:
We know that y is basically two less than x, so we can plug that into the second equation:
x+ (x-2) = 4
We can now simplify:
2x-2=4
2x=6
x=3
After finding x we can now find y with any equation (both work):
y= 3-2
y=1
Hope this helped!
Answer:
x = 3, y = 1Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:
( 3 , 1 )
Hoped this helped :}Which statement explains how the lines x − y = 2 and y = x + 1 are related?
1. They are parallel.
2. They are perpendicular.
3. They are the same line.
4. They are not related.
Answer:
4, they are not related
Step-by-step explanation:
x - y = 2 and y = x + 1
x - y = 2
subtract x
-y = 2 - x
divide by the negative
y = -2 + x or y = x - 2
they are not related
Answer:
The Answer Is A) they are parallel
Step-by-step explanation: i took the test and it was right i hope i helped!
n-17 = 24
Step to step
Answer: 41
Step-by-step explanation: Add 24 plus 17
1) Positive, negative, zero or undefined?
Answer:
I would say zero or undefined
Step-by-step explanation:
Answer:
c, zero slope
200 points down the drain lets see how fast I can get rid of the rest of my 126 points.
How bout a 100 point question? Hehe
Answer:
lezgoooooooooooooooooo
Answer:
THANK U AHHAH
Step-by-step explanation:
