9514 1404 393
Answer:
c = 81
Step-by-step explanation:
The equation x² -c = 0 can be factored as ...
(x -√c)(x +√c) = 0
which has roots ±√c.
The roots are given as ±9, so we have ...
±9 = ±√c
c = (±9)² = 81
The value c = 81 makes the equation have ±9 as solutions.
PLEASE HELP ME IT WILL MEAN A LOT TO ME .
Answer:
19%
Step-by-step explanation:
Use a common measurement style. Generally, it is easiest to use decimal.
0.22 is given as a decimal.
19% means 19/100, in which, when changed to a decimal, you will move the decimal point to the left two place values, giving you the value of 0.19
For fractions, you will generally set it over 100 first, before finding the decimal. Remember that what you multiply to the denominator you must multiply to the numerator:
1/5 x (20/20) = 20/100
20/100 = 0.20
19% is the one that contains the least amount of calories from fat.
~
HELP IM DOING A MATH TEST PLSSSS 25 PTS
simultaneous linear equation 2x+y=4 3x-y=2
Answer:
[tex]2x + y = 4 \\ 3x - y = 2 \\ y = 4 - 2x \\ 3x - (4 - 2x) = 2 \\ 3x - 4 + 2x = 2 \\ 3x + 2x = 2 + 4 \\ 5x = 6 \\ x = \frac{6}{5} \\ x = 1.2 \\ y = 4 - 2x \\ y = 4 - 2(1.2) \\ y = 4 - 2.4 \\ y = 1.6 \\ [/tex]
Step-by-step explanation:
Hope that this is helpful.
Have a great day.
if there are 2.52 centimeters in 1 inch, how long in inches is a meter stick.
Hint: There are 100 centimeters in 1 meters. Round your answer to the nearest hundredth.
26.04 in
41.97 in
31.20 in
39.37 in
Answer:
Step-by-step explanation:
1) (0, −2) and (2, 0)
2) (0, −2) and (−2, 0)
3) (0, 2) and (2, 0)
4) (0, 2) and (−2, 0)
Answer: (2; 0) and (0 ; -2 )
Step-by-step explanation:
equation of a circle [tex]x^2+y^2=4[/tex] with a center (0;0)radius [tex]R=2[/tex] y=kx+b -equation of a straight line that has tangent points with a circle(2; 0) and (0 ; -2 ). these points are the solution to our problemProver that : [tex]\rm (2)^2+0^2=4 \ True \\\\ 0^2+(-2)=4 \ True[/tex]Two friends leave school at the same time, Sarah is heading due north and Beth is heading due east. One hour later they are 10 miles apart. If Sarah had traveled 8 miles from the school, how many miles had Beth traveled?
Answer: 6 miles
Step-by-step explanation:
If you picture this scene in your head, you will get a simple 3x4x5 right triangle. 4 times 2 is 8, 5 times 2 is 10, so Sarah should, by now, have traveled 3 times 2 miles.
Final answer: Beth has traveled 6 miles after an hour.
Hope this helped! :)
Helping tip: The reason it is not 4 is because they are not traveling west and east away from each other. They are traveling north and east, so they are moving in two directions to form a right triangle, and the hypotenuse would be 10 (miles). The side, or distance, that Beth has traveled is 8. So as this is a typical variation of a 3x4x5 triangle Beth will have traveled 6 miles.
Simplify this expression.
20.25 – 9 + 11
о
1
4
0 18.75
0
21?
0 40.75
Answer:
[tex]21\frac{3}{4}[/tex]
Step-by-step explanation:
Step 1: Add the numbers.
20.25 can also be expressed as [tex]20\frac{1}{4}[/tex], because [tex]\frac{2025}{100}[/tex] = [tex]\frac{81}{4}[/tex] = [tex]20\frac{1}{4}[/tex]. So if we add [tex]20\frac{1}{4}[/tex] and 11, we would get [tex]31\frac{1}{4}[/tex]
Step 2: Solve
[tex]31\frac{1}{4} -9\frac{1}{2}[/tex]
Subtract the whole numbers[tex]31-9=21[/tex]
Combine the fractionsThis means addition. Also, since our denominators are not the same value, we have to find the LCM (Least Common Denominator): What do 2 and 4 have in common that they can divide themselves by? 4. We know this because 2 divided by 4 is 2, and 4 divided by 4 is 1, so they can both divide themselves by 4.
[tex]\frac{5}{4}-\frac{1}{2}[/tex]
LCM
[tex]\frac{5}{4}-\frac{2}{4} =\frac{3}{4}[/tex]
Therefore, the simplified expression to this is [tex]21\frac{3}{4}[/tex].
Learn more: https://brainly.com/question/403991
45 + 15 = (3 + ) What the best answer for this question
Answer:
45+15=60 (3+?)
Step-by-step explanation:
?=57
BRAINLIEST to correct answer!
Answer:
Each circle contains shapes that all share at least one characteristic. Some shapes are contained in more than one circle because they share more than one characteristic.
The distance between any point of the circle and the centre is called the radius. All these circles have one.
Hope this helps!
If a rectangle has a length of 12 and width of 8 then its area is 96. This rectangle has an area of 96. Therefore it has a length of 12 and a width of 8. Valid or invalid
Answer: Valid
8 * 12 = 96
Answer:
The answer is invalid
Step-by-step explanation:
Choose Invalid .
You welcome
Suppose that the relation G is defined as follows.
G={(9,-3), (-9, -1), (-9,8), (0,9)}
Give the domain and range of G.
Write your answers using set notation.
domain =
range =
Answer:
Loading,please wait...
Step-by-step explanation:
Help, Fast!!! In class rn and need help!
Step-by-step explanation:
the answer is 2.........
Which pair of angles are congruent?
A. 4 and 5
B. 1 and 7
D. 6 and 8
C. 2 and 5
Estimate 17.154+5.46 by rounding each number to the nearest tenth
Answer:
Step-by-step explanation:
If you like to round 17.154 to the nearest tenth, leaving only one number after the decimal point, then you have come to the right post.
what is 2x divided by a
Answer:
By a what??
Step-by-step explanation:
Answer:
2x a =0
Step-by-step explanation:
there is nothing to explain thanks hope you'll get it
15 points and brainliest
Simplify (Combine Like Terms).
.5x3+ 3x2−8x3−9x2+ 6
.−2y2+ 4x5+ 7y2−8 + 6x2
Answer:-5y-5
Step-by-step explanation:
3y=9-12x I need the slope for this equation and the steps giving 20 points and BRAINLIST
A function is a type of
A.domain
B. range
C. relation
D. vertical line test
A circle has a radius of \blue{3}3start color #6495ed, 3, end color #6495ed. An arc in this circle has a central angle of 340^\circ340
∘
340, degrees.
What is the length of the arc?
Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.
Answer:
length of arc ≈ 17.8 (to the nearest tenth)
Step-by-step explanation:
To find the length of the arc we use the formula for finding length of an arc.
length of arc = ∅/360 × 2πr
where
∅ = central angle
r = radius
∅ = 340°
r = 3
length of arc = ∅/360 × 2πr
length of arc = 340/360 × 2 × π × 3
length of arc = 340/360 × 6π
length of arc = 2040π/360
length of arc = 204π/36
length of arc = (204 × 3.14)/36
length of arc = 640.56/36
length of arc = 17.7933333
length of arc ≈ 17.8 (to the nearest tenth)
Answer: [tex]6\pi[/tex]
Step-by-step explanation: Khan academy
suppose triangle ABC is reflected over the y-axis. if the distance between point B and the y-axis is 5, what is the distance between the y-axis and B'.
A. 5 units
B. 10 units
C. 2.5 units
D. 1.25 units
Needs to be answered quickly
Answer:
A. 5 units
Step-by-step explanation:
When you reflect any shape over the y-axis, each point's distance from the y-axis will stay the same after it's reflected. Hopefully this helps!
What is root 3 x root 7?
Answer:
[tex] \sqrt{3} \times \sqrt{7} = \sqrt{21} [/tex]
I hope I helped you^_^
Solve: 2x-5/3 + 3/5 = 0
Answer:
The value of x is 8/5.
Step-by-step explanation:
Solution :-[tex]\sf \leadsto \dfrac{2x - 5}{3} + \dfrac{3}{5} = 0[/tex]
[tex]\sf \leadsto \dfrac{10x - 25 + 9}{15} = 0[/tex]
[tex]\sf \leadsto \dfrac{10x - 16}{15} = 0[/tex]
[tex]\sf \leadsto 10x - 16 = 0[/tex]
[tex]\sf \leadsto 10x = 0 + 16[/tex]
[tex]\sf \leadsto 10x = 16[/tex]
[tex]\sf \leadsto x = \dfrac{16}{10}[/tex]
[tex]\sf \leadsto x = \dfrac{8}{5}[/tex]
Answer:
x = 1 3/5 or 8/5
Step-by-step explanation:
[tex]\frac{2x-5}{3}+\frac{3}{5} =0[/tex] [tex]\frac{2}{3}x - \frac{5}{3} + \frac{3}{5} = 0[/tex] [tex]\frac{2}{3}x-\frac{16}{5} =0[/tex] [tex]\frac{2}{3}x-\frac{16}{15} +\frac{16}{15}= 0 + \frac{16}{15}[/tex] [tex]\frac{2}{3}x=\frac{16}{15}[/tex] [tex]\frac{2}{3}x * \frac{3}{2} = \frac{16}{15} * \frac{3}{2}[/tex] [tex]x= \frac{8}{5}[/tex] [tex]x = 1\frac{3}{5}[/tex]What is the value of w in the equation
0.04w + 0.6= 2.4?
Answer: 45
Step-by-step explanation:
0.04w+0.6=2.4
Step 1: Subtract 0.6 from both sides.
0.04w+0.6−0.6=2.4−0.6
0.04w=1.8
w=45
Answer:
w = 45Step-by-step explanation:
What is the value of w in the equation
0.04w + 0.6= 2.4?
0.04w + 0.6 = 2.4
0.04w = 2.4 - 0.6
0.04w = 1.8
w = 1.8 : 0.04
w = 45-----------------------------
check
0.04 × 45 + 0.6 = 2.4
1.8 + 0.6 = 2.4
2.4 = 2.4
The answer is goodAn investment of P=1237.50 is compounded annually with a 6.75% APR . Find the value of the investment after 5 and a half years.
Answer:
1772.43Step-by-step explanation:
Given:
Principal P = 1237.50Interest rate r = 6.75% or 0.0675Number of compounds n = 1Time t = 5.5 yearsFind the total:
[tex]A = P(1 + r/n)^{nt}[/tex][tex]A = 1237.5*(1+0.0675)^{5.5} = 1772.43[/tex]Evaluate the given expression. P(9, 3)
Step-by-step explanation:
p=9
p=3
p-9=0
p-3=0
(p-9)(p-3)=0
p*2-3p-9p+27=0
p*2-12p+27=0
Write the equation of the line in fully simplified slope intercept form
Answer:
y = 6x - 5
Step-by-step explanation:
In order to determine the slope-intercept form, y = mx + b, of the given line:
You need to find the slope (m) and determine the y-intercept (b).
Given the points (1, 1) and (0, -5):
Let (x1, y1) = (1, 1)
(x2, y2) = (0, -5)
Use the following formula for slope:
m = (y2 - y1)/(x2 - x1)
m = (-5 - 1)/(0 - 1)
m = -6/-1
m = 6
The slope of the line is 6.
Next, the y-coordinate (b) of the point, (0, b ) is the y-intercept of the line where the graph of the linear equation crosses the y-axis. The y-intercept is also the value of y when x = 0.
Looking at the graph, you'll see that the line crosses at point (0, -5). We used this point earlier to solve for the slope. Hence, the y-coordinate, b = -5, is the y-intercept.
Given the slope, m = 6, and the y-intercept, b = -5:
The linear equation in slope-intercept form is: y = 6x - 5.
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ABCD is a quadriateral Work out the length of BC Give you answer to 1 decimal place
Answer:
8.1
Step-by-step explanation:
It might be wrong I'm bad at solving triangles
PLEASE ANWSER CORRECTLY!! I WILL MARK BRAINIEST!!!
Step-by-step explanation:
the midpoint is (2,-3)
that is the answer
Answer:
the midpoint formula=(x1+x2)/2,(y1+y2)/2
then,
=(7-3)/2,(1-7)/2
=4/2,-6/2
=2,-3
como buscar a una perzona a qui en brainly
Answer:
can l
Step-by-step explanation:
can l? can l? can l~
Megan is running a 1 mile lap for 3 hours how many miles did she run
Answer:
Can you elaborate on the question, like is there a given for how long each lap takes?
Step-by-step explanation: