Answer:
-4.5
Step-by-step explanation:
-12-3x=x+6
-4x=18
x=-4.5
Answer:
-4.5=x
Step-by-step explanation:
First you would distribute the -3 to the 4 and x inside the parentheses
It would be -3 x 4= -12
Then -3 x X= -3x
So your equation would now be -12+ -3x = x + 6
Now you add 3x to the -3x to cancel it out and then add it to the x
So your equation now looks like -12=4x +6
Then you subtract 6 from the 6 to cancel it out and add it to the -12
Now your equation looks like -18=4x
Then you divide 4 from the 4x to cancel it out and then divide 4 from the -18
Finally you have -4.5=x
I'm unsure if this is correct but hopefully this helps :)
estimate √9.7+3.88×6.21
9514 1404 393
Answer:
a little more than 27
Step-by-step explanation:
Estimates are generally made by approximating the numbers using 1 or 2 significant digits. The idea is to do as much mental arithmetic as possible, not involving a calculator. Here, the estimate can be based on rounding the values like this:
√9.7 +3.88 × 6.21 ≈ √9 +4 × 6 = 3 +24 = 27 . . . estimated expression value
__
Another aspect of estimating is determining the approximate error involved.
We know that √9.7 will be more than √9 = 3, and less than √10 ≈ 3.16*. Its real value may be about 3.1.
3.88 is less than 4 by 0.12, or 3%. 6.21 is greater than 6 by .21, or 3.5%. So, the estimated product of 24 will be on the order of -3% +3.5% = 0.5% too low. Of course 1% of 24 is 0.24, so 1/2% will be about 0.12. Now, we are able to estimate that our estimate is about 0.2 units too low. (The actual value of the expression is an irrational number that rounds to about 27.2093.)
_____
* The value of 3.16 for √10 is not so hard to remember, because it is just slightly more than π ≈ 3.14.
__
Additional comment
Small percentages can usually be added and subtracted without introducing too much additional error. (The smaller the percentages, the less additional error is introduced.) Here, the error in our estimated product can be more accurately determined by computing ...
(1 -3%)(1 +3.5%) = 1 +0.5% -0.105% = 1 +0.395% . . . . . . (not 1 +0.5%)
That is, our product's actual value is 24.0948, not 24.12.
In Ms. Monroe's 2nd Period class, 5 students made an A
and 6 students made a B on the last quiz in math class
out of a total of 32 students.
What percent of students made an A or B combined?
(ROUND TO THE NEAREST WHOLE PERCENT)
Y
Answer:
yes
Step-by-step explanation: yes
please help!!!! its math I will give you more points if you answer correctly and brainly
The equations of four lines are given. Identify which lines are perpendicular.
Line 1: y+8x=−5
Line 2: x+1/6y=−5
Line 3: y=−6x−7
Line 4: y+3=1/8(x−1)
Lines 2 and 3 are perpendicular.
Lines 1 and 2 are perpendicular.
All four lines are perpendicular.
Lines 1 and 4 are perpendicular.
Answer:
All four lines are perpendicular
Step-by-step explanation:
Lines 1 and 2 are parallel
y+8x=−5;x+1/6y=−5
Lines 2 and 3 are parallel
x+1/6y=−5;y=−6x−7
Lines 1 and 4 are perpendicular they intercept
x+1/6y=−5;y+3=1/8(x−1)
All four lines are perpendicular
line 4 is perpendicular to all other lines
Pls help with both...........
Answer:
1000
512 is ans ...............
What is the area of the triangle?
A. 8.64 ft2
B. 10.8 ft2
C. 14.4 ft2
D. 17.28 ft2
Answer: 8.64
Step-by-step explanation:
3.6 * 4.8 = 17.28
17.82/2 = 8.64
Answer:
A. 8.64 ft²
Step-by-step explanation:
The equation for the area of a triangle is A = 1/2bh
b is base and in this case 4.8
h is height and in this case 3.6
A = 1/2 (3.6)(4.8)
A = 8.64
Hope this helped :)
WILL GIVE BRAINLIEST Bryan owes the bank $7. He gets paid $35 for
babysitting and deposits it into his account. What will
his bank balance show?
Answer:
$28
Step-by-step explanation:
pls help me with these.....pls its urgent..... the right one will get brainliest.....
Answer: 8. 1.2 × 10⁻⁶ 1.2 × 10⁻³ 1.2 × 10³ 1.2 × 10⁵ 1.2 × 10⁶
9a. 6.85 × 10⁻⁷ m 0.00000052 m 4.6 × 10⁻⁷ m
9b. BGYR shortest to greatest
10. 6 × 10⁵ 3 × 10³
11a. 10⁻⁷
11 b i. 8 × 10⁻⁷
11 b ii. 0.0000008
Step-by-step explanation: 8: the image is a bit out of focus, so it's hard to tell what all the exponents are. Just remember that for negative exponents, the larger the number, the smaller the value.
9. Following the examples given, the exponent tells how many places to count from right to left to move the decimal from standard form to wavelength and vice-versa.
9b. Just put the numbers from standard form in order and find the corresponding color.
10. For multiplication, multiply the numbers to the left of the × and add the exponents of the 10. For division, Divide the numbers on the left and subtract the exponents of 10.
11a add the powers. Just like the first part of #10
11b same procedure as #10 (The more you practice, the more likely you will remember)
The total number of decimal places in the factors will be the number of decimal places in the product. 0.002 has 3 decimal places. 0.0004 has 4 decimal places. Total of 7. SO "0" decimal . then six 0's then the multiplied number 8 in 7th place.
HELP IM BEING TIMED!!!!!
Answer:
10
Step-by-step explanation:
Rad10 times rad10 equals rad100 which is simplified to 10
Answer:
A: 10
Step-by-step explanation:
√10 × √10
= 10
Answer The Question Below:
Answer:68600m
Step-by-step explanation:98 meters to cm is 9800 then times it by 7 you get 68600
I need the answer to this question I don’t understand it
please help with questions. This is geometry btw
Answer:
I'm pretty sure it's true.
Step-by-step explanation:
Answers choices are in the picture
Answer: I believe the answer is b.
PLS HELP ASAP I DONT HAVE TIME AND IT ALSO DETECTS IF ITS RIGHT OR WRONG
What is the value of r in the equation?
-1.5(4-r)--12
-6
O4
O
4
O6
Answer:
I am going to say 6 , please let me know if I am wrong :)
If the equation of a line is y = - 5x + 3, which is true?
A) Slope is 3, Y-Intercept is -5
B) Slope is -5 , Y- Intercept is 0
C) Slope is -5, Y-Intercept is 3
D) Slope is 5, Y-Intercept is -3
PLS ANSWER 64 POINTS (64 POINTS AND ILL MARK BRAINIEST) PLS...
Answer:
A
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
So the formula for slope is y = mx + b
Here is what it looks like so far: y = -5x + 3
In that equation, -5 is m (slope)
and 3 is b (y-intercept)
So the answer is C
What is 24% of 100
PLEASEEEE HELP I WILL GIVE BRAINLY POINTS!!!!!!!!!!!!!!!!!
Answer:
24% of a hundred is 24
Step-by-step explanation:
use fractions to help you solve this.
WILL MARK BRAINLIEST
Divide an exponential and cubic function.
Answer:
where's the question
Step-by-step explanation:
Please help me asap! pleaseee
Which tool could be used to model wave motion during a scientific investigation?
A: beam balance
B: mirror
C: prism
D: slinky spring
Answer:
D: slinky spring
Step-by-step explanation:
Julio says, "If you subtract 11 from my number and multiply the difference by - 6, the result is
-78." What is Julio's number?
Julio's number is
Answer:
Julio's number is 24
Step-by-Step Explanation:
1. 24 - 11 = 13
2. 13 · -6 = -78
Answer:
26
Step-by-step explanation:
HELP!!! PLEASE TELL ME WHICH GRAPH GOES WHERE!!! DON'T IGNORE PLEASE!!!
So y=mx+b is still prevalent here even if it's an inequality. Meaning your slope AND y-intercept can help you. Even if it's in ax+by=c you can easily get the y alone into slope-intercept.
y<_3x+5 for example. For one, it is y is less than or equal to 3x+5. So the line shouldn't be dotted. So that leaves us with the two far-right graphs to look at. 5 is our y-intercept in the equation. So look at our graph and see which one has the line passing through 5. They both do. Okay, well we can still use our sign, it shows that y is LESS than 3x+5. So the shaded blue part should be on the right. If it was the other way around it would be the left. So our graph should be the far right for this equation.
Hope this helps... I know it's kind of messy. If you need any more help let me know. But I hope I outlined what to look for.
the product of the roots of a quadratic equation 2x²-5x+3=0 is 5/2 if it is correct give reason
9514 1404 393
Answer:
It is incorrect. The product is 3/2.
Step-by-step explanation:
The factored form of a quadratic with roots p and q can be ...
a(x -p)(x -q) = ax² -a(p+q) +apq
Then the product of the roots is the ratio of the constant to the leading coefficient:
pq = (apq)/a
In the given quadratic, that product is ...
pq = 3/2 . . . . . . not 5/2
The statement that the product of roots is 5/2 is incorrect. That value does not have the required relationship to the coefficients of the quadratic.
The picture above shows the question.
Answer:
angle one is 62 degrees
Step-by-step explanation:
3x+2+5x+18=180
x=20
5*20+18=118
180-118=62
1/sin30 - √3/cos10 =4 prove it?
Step-by-step explanation:
1/sin10-√3/cos10
= (cos10 - √3sin10)/cos10sin10
multiplying 1/2 in denominator and numerator
= {(cos10/2) - (√3sin10/2)}/(cos10sin10/2)
= (cos60cos10 - sin60sin10)/(cos10sin10/2)
= cos(60 + 10)/(cos10sin10/2)
= cos70/(cos10sin10/2)
= 2cos70/cos10sin10
multiplying 2 on numerator and denominator
= 4cos70/2sin10cos10
=4cos70/sin20
=4cos70/cos70
= 4 proved
Mrs. Collins made a scatterplot to show the relationship between the number of absences a
student in her class has and the student's final exam score.
Absences vs. Ecam Scores
100
90
.
.
Exam Score
80 70 50
RO
5
Number of Absences
Based on this scatterpiot, approximately what score should a student with 6 absences expect
to receive on the final exam?
A 65
B92
C 67
Given that f ( x ) = 3 x − 2 and g ( x ) = 2 x , evaluate f ( g ( − 1 ) )
g(x) = 2x
9(-1) = -2
f(x) = 3x-2
f(g(-1)) = f(-2) = 3*(-2) - 2 = -8
Answer:
-8
Step-by-step explanation:
g(-1)= 2 * -1 = -2
So f(g(-1)) will be f(-2)
F(-2) = (3 * -2) - 2
= -6 - 2
= -8
Question 15
If you have these three lengths 6cm,7cm,6cm can they make a Triangle?
O True
False
Answer:
the answer is yes
since there is there sides that's what shows in a triangle
Help me pls !!!!!!!!!’n
Answer:
x=-31/4
Step-by-step explanation:
Cross multiply and bring 3 to the opposite side.
3(3x+8) =5x-7
9x+24=5x-7
Bring all the x to one side and the numbers to the other
9x-5x=-7-24
4x=-31
x=-31/4
If Z is the centroid of triangle TUV, TZ=60, XZ=28, and WZ=25, find each missing measure
The measure of length ZV, ZY, ZU, TY, and XV are 56, 30, 50, 60, and 78.
If Z is the centroid of triangle TUV, then the following are true:
ZV = 2ZX
Given that ZX = 28,
ZV = 2(28)
ZV = 56
Similarly, TZ = 2ZY
60 = 2ZY
ZY = 60/2
ZY = 30
Also, ZU = 2WZ
ZU = 2(25)
ZU = 50
TY = 2ZY
TY = 2(30)
TY = 60
XV = XZ + ZY
XV = 28 + 50
XV = 78
Therefore the measure of length ZV, ZY, ZU, TY, and XV are 56, 30, 50, 60, and 78.
Learn more on centroid here: https://brainly.com/question/25845737
PLZ HELP IM TWO WEEKS BEHIND THE SCHOOL CALLED MY MOM
Which describes dependent events?
drawing a blue marble and a yellow marble at the same time from a bag of marbles
drawing the ace of spades from a deck of cards, putting it back into the deck, and
drawing the king of spades.
rolling a six-sided number cube and getting an even number, then rolling the same six-sided number cube and getting an even number again
flipping two coins at the same time and getting heads on one and tails on the other
Answer: Drawing a blue marble and a yellow marble at the same time from a bag of marbles is the example of dependent events.
Step-by-step explanation: When the cards are replaced, or flipping coins or rolling dice, the outcome of the first event does nor affect the probability of the next event.
Drawing two marbles at the same time is essentially the same as drawing one and Not replacing it and then drawing the second one. The number of marbles left affects the probability.
Answer:
A
Step-by-step explanation: