Answer:
a) (+) × (?) = (+)
(?) = (+)
b) (-) × (+) = ?
? = (-)
c) (?) × (-) = ?
? is undefined
Step-by-step explanation:
a) (+) × (?) = (+)
From the given equation in the question, by dividing both side of the equation by (+), we have;
((+) × (?))/(+) = (+)/(+)
(?) = (+)/(+) = (+)
Therefore, we have;
(+) × (+) = (+)
(?) = (+)
b) (-) × (+) = ?
From the given equation in the question we apply the operation rules as follows;
(-) × (-) = (+)
(-) × (+) = (-)
Therefore;
(-) × (+) = ? = (-)
? = (-)
c) (?) × (-) = ?
From the rules of multiplication, we have;
(-) × (-) = (+)
(+) × (-) = (-)
Therefore, when (?) = (-), ? = +, from which we have;
(?) ≠ ?, which is an error
Similarly, when (?) = (+), ? = -, therefore, (?) and ?, always changes sign
Therefore, the equation, (?) × (-) = ?, is undefined.
There are 1,240 skittles in a bag, 25% are blue, .22 are red, 1/3 yellow and 1/5 are purple. Which color is least likely to be picked?
Step-by-step explanation:
[tex] \frac{1}{3} = 0.3333...[/tex]
[tex] \frac{1}{ 5} = 0.2[/tex]
[tex]25\% = 0.25[/tex]
0.22=0.22
[tex]0.2 < 0.22 < 0.25 < 0.33...[/tex]
0.2 (1/5)/ purple is the least likely.
What inverse operation should be used to isolate the variable in the equation j ÷ 12 = 50?
Answer:
multiplication...
Step-by-step explanation:
50 x 12 = 600
SO...
j = 600
SOO...
600 / 12 = 50
there u go
can i be brainiest...
Lin runs 5 laps a track in six minutes how many minutes per lap is that
Answer:
1.2 minutes
Step-by-step explanation:
6 divided by 5 = 1.2
To do this, you take the total number of minutes, which is 6, and divide by the number of laps that Lin ran, which was 5.
Answer:
1.2 minutes
Step-by-step explanation:
5 laps/6 minutes = 1 lap/x minutes
To convert the ratio from 5 laps to one laps, 5 was divided by 5. Therefore, to keep the same ratio, 6 must also be divided by 5, making the answer:
1 lap/1.2 minutes
If Mia has brings 14 donuts to the party and Lizzy brings 14 also then how many cookie's is there all together
Which linear equation is represented by the table? Please help me, I really don’t understand, thank you so much!!
Answer:
C) y=x+3
Step-by-step explanation:
I did it and got it right
Please help whats the error
Answer:
x=20°
Step-by-step explanation:
5x°=100° ----because they are vertically opposite angles
x=100/5
x=20°
How many degrees is -6.2 rotations clockwise
PLEASEEEEEE HELPP ME EEEE :)
Find the volume of the cylinder. Use 3.14 for pi. Round your answer to the nearest tenth.
Answer:
The formula for the volume of a cylinder is V=Bh (where B is the base) or V=πr2h . The radius of the cylinder is 9 ft and the height is 6 ft. Substitute 9 for r and 6 for h in the formula V=πr2h = (3.14) (9) (2) (6) =339.12
Step-by-step explanation:
Now C=339.12 round to the nearest tenth is 339.1
Can someone help me with this question pls and thank you
Answer:
x>2
Step-by-step explanation:
Longer than two hours is >.
Jeannie got a new pair of eye glasses. She was able to pay $15 at the
time she received her glasses. She will pay $12 each month on the
balance. The original cost of the glasses was $87.
a. Write an equation to determine how many months it will take
Jeannie to pay for her glasses?
Answer:
Equation A. 12x=87
A function is shown
f(x)=2/3x+3 what is the value of f(12)
Answer:
11
Step-by-step explanation:
f(12) = 2/3x+3
So, replace x with 12.
2/3(12) + 3
2/3 x 12 = 8
8 + 3 = 11
Question 4
Solve the system of equations and choose the correct answer from the list of options.
x+y=-3
y = 2x + 2
A) ( 5/3,4/3)
B) (-5/3,-4/3)
C) (-2/5,-3/4)
D) ( 3/4,3/5)
Solve equation by using the quadratic formula.
2 x squared minus 5 x = 7
a.
x = StartFraction 2 Over 7 EndFraction, negative 1
c.
x = StartFraction 7 Over 2 EndFraction, negative 1
b.
x = StartFraction 2 Over 7 EndFraction, 0
d.
x = StartFraction 2 Over 7 EndFraction, 1
Answer:
Do you need all of them?
Step-by-step explanation:
Answer:
C) x=7/2,-1
Step-by-step explanation:
just took the pretest got this right
Is (4, 2) is the solution to the system below?
Explain how you know by recording an audio response or by showing your work.
y=2x-6
x+y=8
I need help solving
Step-by-step explanation:
Divide a percentage by 100% to convert it.
=> (1/20%) / 100% = 0.0005 or 1/2000.
mr. Kido purchased 5
footballs for his
physicd education
class. If he paid
$41.25. how much was
each football?
Help!!
Answer:
8.25
Step-by-step explanation:
Answer:
$8.25
Step-by-step explanation:
Divide: 41.25 divided by 5
41.25 divided by 5=8.25
$8.25
Hope this helped!! :)
Brainliest?!?!
Stay safe and have a wonderful day/afternoon/night!!!
Find the area of the composite figure?
Answer:
128
Step-by-step explanation:
Let's start by figuring out the last side of the triangle
we can use the pathagoryous theroem and get
11.9²+x²=16.9²
Solve this and get x=12
Let's now compute the area of the triangle
b*h*.5
12*11.9*.5=71.4
So 71.4 is the area of the triangle
we now need to find the area of the semi circle.
to do this we are going to find the area and then divide it by 2
We know that the length is equal to 12 which means that the radius is 6
so we have
π6²/2
which is 56.55
We add the 71.4+56.55= 127.94 which rounds to 128
Answer:
212.758
Step-by-step explanation:
Find the semi-circle first, the diameter is 16.9 ft.
To find area:
Formula:
pi x radius x radius x 1/2
16.9 ÷ 2 = 8.45 (radius)
22/7 x 8.45 x 8.45 = 224.407 (Circle)
224.407 ÷ 2 = 112.203 (Semi circle)
Find the triangle:
1/2 x base x height or length x base x height
But for now, we will use the first one.
1/2 x 16.9 x 11.9 = 100.555
Now add them up.
100.555 + 112.203 = 212.758
(I don't know what units you to put for your answer since I don't learn American mathematics, so it's up to you)
A bus going 45km/h travels nonstop from the northern end of town to the southern end of town in 15 minutes. How far does the bus travel?
Step-by-step explanation:
15 minutes = 0.25 hours.
Distance the bus travels
= (0.25h)(45km/h)
= 11.25km.
7th grade math please helpp i have alot of questions due in 10mins
Answer:
V=247.8
Step-by-step explanation:
V=whl
V = (4.2)(5)(11.8)
Write the equation of the line passing through the point (3, 5) that is
PEREPENDICULAR to y = -3/4x + 5 in slope-intercept form.
Answer:
Step-by-step explanation:
perp. 4/3
y - 5 = 4/3(x - 3)
y - 5 = 4/3x - 4
y = 4/3x + 1
- 1 greater than or equal to x, and - 9 is less than x
Answer:
−1⩾x>9
Step-by-step explanation:
9 less than x simply means x is greater than 9
[tex] - 1 \geqslant x > 9[/tex]
Write as a fraction with a whole number divisor: 35.7 ÷ 0.07
Answer:
510
that the whole number
If you combine 4x and -2x how many x's will we have left?
Answer:
Step-by-step explanation:
4x+(-2x)=2x
just answer with the scale factor pleaseee
1.5 :)
Step-by-step explanation:
you would divide the 2 numbers, then youre left with the sf
Ricardo ran 160 minutes last week at the park. If he runs 15% more this week,
how many total minutes will Ricardo run this week?
Answer:
Im pretty sure its 184 minutes
which equation matches the graph of the greatest integer fiction giving below? a p e x
Answer:
A P E X < CS
Step-by-step explanation:
simple
(3g - 8) - (2g - 1) ...........
Answer:
g-7
Step-by-step explanation:
At a hot dog stand they serve regular hot dogs and footling hot dogs at a ratio of 5 to 3. Based on this ratio how many footlong hot dogs will be served if there is a total of 120 hot dogs served.
Find the value of x.
A
28
20
B
9x – 8
С
Answer:
The question is incorrect. please provide a diagram.
