Answer:
The negative sign is put before numbers to make them negative, or make their signs the opposite of what the are.
You have a 20.
+ 20
You don't need to put the + there if there is nothing before it, but that is a positive 20.
If you put a negative in front of it;
- (+ 20) = - 20
If you have a negative in front of parenthesis;
50 - (2x - 20)
50 - 2x + 20
70 - 2x
The ratio of boys who play soccer, hockey and
rugby at a high school is 6:4:5 respectively.
If there are 72 boys playing hockey, how many
boys are there altogether at this high school?
Answer:
270
Step-by-step explanation:
72 ÷ 4 = 18
6 + 5 = 11
18 × 11 = 198
198 + 72 = 270
While unpacking a box of canned vegetables, you notice 7 out of 40 cans
are dented. Write 7 out of 40 as a fraction, decimal and percent.
Step-by-step explanation:
7/40, 17.5%, 0.175
Hope this helps!!
Which equation represents the graphed function? O y = -3x + 3 O y = 3x - 3 O y = 3x - 2 / 2 O y=-*x+3
Answer:
y=1/3x+3
Step-by-step explanation:
the general equation for a straight line is y=mx+c.where c is the y cut therefore the y cut on our graph is at (0,3)therefore c is 3
we then find the gradient which is "m" on our equation using the formula m=y2-y1/x2-x1
then we substitute the m and c then tha is the equation.
Answer:
Step-by-step explanation:
Solve for a. 2.4a + 8 = 27.2
Answer:
Hello! answer: a = 8
Step-by-step explanation:
2.4 × 8 = 19.2
19.2 + 8 = 27.2 therefore a = 8 hope that helps!
Answer:
a = 8
Step-by-step explanation:
2.4a + 8 = 27.2
2.4a + 8 - 8 = 27.2 - 8
2.4a = 19.2
2.4a ÷ 2.4 = 19.2 ÷ 2.4
a = 8
Mark, Jessica, and Nate each downloaded music from the same website. Mark downloaded 10 songs in total consisting of pop, rock, and hip hop. Jessica
downloaded five times as many pop songs, twice as many rock schgs, and three times as many hip hop songs as Mark. She downloaded 28 songs total.
Nate downloaded 20 songs total with three times as many pop songs, three times as many rock songs, and the same number of hip hop songs as Mark.
Which system of equations represents their music choices?
Answer:
Mark:
x + y + z = 10
Jessica:
5x + 2y + 3z = 28
Nate:
3x + 3y + z = 20
Step-by-step explanation:
Let
x = number of pop song downloaded by Mike
y = number of rock song downloaded by Mike
z = number of hip song downloaded by Mike
Mark downloaded 10 songs in total consisting of pop, rock, and hip hop
Mark:
x + y + z = 10
Jessica downloaded five times as many pop songs, twice as many rock schgs, and three times as many hip hop songs as Mark. She downloaded 28 songs total.
Jessica:
5x + 2y + 3z = 28
Nate downloaded 20 songs total with three times as many pop songs, three times as many rock songs, and the same number of hip hop songs as Mark.
Nate:
3x + 3y + z = 20
The following system of equations represents their music choices
Mark:
x + y + z = 10
Jessica:
5x + 2y + 3z = 28
Nate:
3x + 3y + z = 20
Answer:
Mark:
x + y + z = 10
Jessica:
5x + 2y + 3z = 28
Nate:
3x + 3y + z = 20
Step-by-step explanation:
Let
x = number of pop song downloaded by Mike
y = number of rock song downloaded by Mike
z = number of hip song downloaded by Mike
Mark downloaded 10 songs in total consisting of pop, rock, and hip hop
Mark:
x + y + z = 10
Jessica downloaded five times as many pop songs, twice as many rock schgs, and three times as many hip hop songs as Mark. She downloaded 28 songs total.
Jessica:
5x + 2y + 3z = 28
Nate downloaded 20 songs total with three times as many pop songs, three times as many rock songs, and the same number of hip hop songs as Mark.
Nate:
3x + 3y + z = 20
The following system of equations represents their music choices
Mark:
x + y + z = 10
Jessica:
5x + 2y + 3z = 28
Nate:
3x + 3y + z = 20
Step-by-step explanation:
Which fraction is equivalent to 16%?
16/25
4/25
16/16
4/16 here are the answers tell soon plss
Answer:
4/25
Step-by-step explanation:
i am pretty sure this is correct:)
Answer:
4/25
I think it's the correct answer
here it is help!!!!!!!!!!!!!!
Answer:
Step-by-step explanation:
1.6/x=3/8
do cross multiplication
x*3=6*8
x=48/3
x=16
2.b/8=3/4
do cross multiplication
b*4=8*3
b=24/4
b=6
4.n/8=35/7
do cross multiplication
35*8=7*n
280=7n
280/7=n
40=n
find the distance between each pair of points
(7 1/2, 3 1/4) and (7 1/2, 9 1/2)
Answer:
d=13
Step-by-step explanation:
D = √(x2 - x1)2 + (y2 - y1)2
D = √(-6 - (-8))2 + (1 - 4)2
D = √(-6 + 8)2 + (-3)2
D = √(2)2 + (-3)2
D = √4 + 9
D = √13
Help
Math
Will
Give
Brainlist
:))
In a store 3% of eggs are cracked. If you buy one dozen eggs what is the probability that
a) exactly 2 eggs are cracked?
b) exactly 4 eggs are cracked?
Answer:
0.36
Step-by-step explanation:
what is the value of 1 in 915,342,760
the 1 is in the 10 million place
please somebody else help me to do . I will mark the correct answer as a brainiest
there is your answer follow and mark me as brainliest
If side x has a length of 15 cm and side y has a length of 4 cm, then which value below could be the length of sides? A.20cm B.16cm C.22cm D.23cm
Complete question:
If side x has a length of 15 cm and side y has a length of 4 cm, then which value below could be the length of the third sides? A.20cm B.16cm C.22cm D.23cm
Answer:
B. 16 cm
Step-by-step explanation:
Given;
two lengths of the triangle as 15 cm and 4 cm
The length of the third side of the triangle must be less than the sum of the two given sides.
Length of third side < 15 cm + 4 cm
Length of third side < 19 cm
The only option less than 19 cm is B. 16 cm
Therefore, the correct option is B. 16 cm
find the value of x and y
Step-by-step explanation:
(18x-44) is x and the answer is: -792
and (13 y -38) you would have to Remove the parentheses.
Someone please help ASAP!
Solve using the quadratic formula. Approximate answers to the nearest tenth.
Help
Answer:
x = 2.4 or x = 0.3
Step-by-step explanation:
3x² - 8x + 2 = 0
Quadratic formula
x = {-b ±√b² - 4ac} / 2a
a = 3
b = -8
c = 2
x = {-b ±√b² - 4ac} / 2a
= {-(-8) ±√(-8)² - 4*3*2} / 2*3
= (8 ± √64 - 24) / 6
= (8 ± √40) / 6
= (8 ± 2√10) / 6
= 8/6 ± 2√10/6
= 4/3 ± √10 / 6
x = 4/3 + √10 / 6 or 4/3 - √10 / 6
x = 2.4 or x = 0.3
pls answer correct or i will ban you
And I will mark brainlist whoanewers correct
Since segment AC bisects (aka cuts in half) angle A, this means the two angles CAB and CAD are the same measure. I'll refer to this later as "fact 1".
Triangles ABC and ADC have the shared segment AC between them. By the reflexive property AC = AC. Any segment is equal in length to itself. I'll call this "fact 2" later on.
Similar to fact 1, we have angle ACB = angle ACD. This is because AC bisects angle BCD into two smaller equal halves. I'll call this fact 3
----------------------
To summarize so far, we have these three facts
angle CAB = angle CADAC = ACangle ACB = angle ACDin this exact order, we can use the ASA (angle side angle) congruence property to prove the two triangles are congruent. Facts 1 and 3 refer to the "A" parts of "ASA", while fact 2 refers to the "S" of "ASA". The order matters. Notice how the side is between the angles in question.
------------------------
Once we prove the triangles are congruent, we use CPCTC (corresponding parts of congruent triangles are congruent) to conclude that AB = AD and BC = BD. These pair of sides correspond, so they must be congruent in order for the entire triangles to be congruent overall.
It's like saying you had 2 identical houses, so the front doors must be the same. The houses are the triangles (the larger structure) and the door is an analogy to the sides (which are pieces of the larger structure).
Given that a = two and b = 3, what is the value of (ab)?
Answer:
(ab) = 6
Step-by-step explanation:
a = 2 and b = 3
So, (2(3)) or 2 x 3 = 6
You download 15 music files on your computer and plan to save 7 of them to an MP3 player. In how many ways can u arrange the songs
Answer:
32,432,400
Step-by-step explanation:
This you can use a permutation.
P(15,7)15x14x13x12x11x10x9
There are 32,432,400 ways to arrange it.
Can some one help explain this
Answer:
[tex]4( {x}^{2} - 1) - ( {x}^{2} - 8x - 5)[/tex]
[tex]4 {x}^{2} - 4 - {x}^{2} + 8x + 5[/tex]
[tex]3 {x}^{2} + 8x + 1[/tex]
Can someone pleaseeee help and if you’re correct i’ll give brainliest
Answer:
A = 20
Step-by-step explanation:
1) Find the distance between -49.75 and 31.5 on a number line.
Answer:
81.25
Step-by-step explanation:
Because you want to know the total distance, calculate how many digits -49.75 is away from 0. It is 49.75 digits away from 0.
Now calculate how many digits 31.5 is away from 0. It is 31.5 digits away from 0.
Finally, add those two distances together so that you know the total distance:
49.75+31.5 = 81.25
Answer:
in the picture
HOPE ITS HELP
Whats -606-(-778+20)+2n?
Find the measure of angle 3 if the measure of angle 8 is 40
degrees.
Answer:
3=140°
Step-by-step explanation:
Each small square on the tile table is the same size. The length of a side of a small square is 2 inches . What is the area of the tile table ? Explain. please no link
Standard fom: 4x20x² 24x
what is the Leading coefficient
Explain the behavior base on the
degree and leading coefficient?
Answer:
that is behavior that coefficient
Calculate the distance between the points K=(-5, 1) and C = (3, -2) in the coordinate plane.
Answer:
the square root of 5=2.2361
Find the value or values of X in the quadratic equation x2=6x-9.
Answer:
x = 3
Step-by-step explanation:
I'm assuming x2 = x^2
x^2=6x−9
x^2−6x=−9
The school events committee is planning to buy a banner and some helium balloons for graduation night. A store charges them $35 for the banner and $3 for each helium balloon. If the committee has at most $125 to spend, how many helium balloons can they buy?
What is the volume of this sphere?
Use ≈ 3.14 and round your answer to the nearest hundredth.
radius is 4 meters long.
Answer:
Step-by-step explanation:
